Equity Residential (EQR) 10-K 15 Feb 24 2023 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Feb. 08, 2024	Jun. 30, 2023
Document Information [Line Items]
Entity Registrant Name	EQUITY RESIDENTIAL
Entity Central Index Key	0000906107
Document Type	10-K
Document Period End Date	Dec. 31, 2023
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Trading Symbol	EQR
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 25
Entity Common Stock, Shares Outstanding		379,553,591
Entity File Number	1-12252
Entity Tax Identification Number	13-3675988
Entity Address, Address Line One	Two North Riverside Plaza
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	312
Local Phone Number	474-1300
Entity Incorporation, State or Country Code	MD
Title of 12(b) Security	Common Shares of Beneficial Interest,$0.01 Par Value (Equity Residential)
Security Exchange Name	NYSE
Document Annual Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Auditor Name	Ernst and Young LLP
Auditor Location	Chicago, Illinois, USA
Auditor Firm ID	42
Documents Incorporated by Reference	Part III incorporates by reference certain information that will be contained in Equity Residential’s Proxy Statement relating to its 2024 Annual Meeting of Shareholders, which Equity Residential intends to file no later than 120 days after the end of its fiscal year ended December 31, 2023, and thus these items have been omitted in accordance with General Instruction G(3) to Form 10-K. Equity Residential is the general partner and 97.0% o wner of ERP Operating Limited Partnership.
ERPOP [Member]
Document Information [Line Items]
Entity Registrant Name	ERP OPERATING LIMITED PARTNERSHIP
Entity Central Index Key	0000931182
Document Type	10-K
Document Period End Date	Dec. 31, 2023
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
No Trading Symbol Flag	true
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	0-24920
Entity Tax Identification Number	36-3894853
Entity Address, Address Line One	Two North Riverside Plaza
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	312
Local Phone Number	474-1300
Entity Incorporation, State or Country Code	IL
Title of 12(b) Security	7.57% Notes due August 15, 2026(ERP Operating Limited Partnership)
Security Exchange Name	NYSE
Document Annual Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Auditor Name	Ernst and Young LLP
Auditor Location	Chicago, Illinois, USA
Auditor Firm ID	42

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Land	$ 5,581,876	$ 5,580,878
Depreciable property	22,938,426	22,334,369
Projects under development	78,036	112,940
Land held for development	114,300	60,567
Investment in real estate	28,712,638	28,088,754
Accumulated depreciation	(9,810,337)	(9,027,850)
Investment in real estate, net	18,902,301	19,060,904
Investments in unconsolidated entities	282,049	279,024
Cash and cash equivalents	50,743	53,869
Restricted deposits	89,252	83,303
Right-of-use assets	457,266	462,956
Other assets	252,953	278,206
Total assets	20,034,564	20,218,262
Liabilities:
Mortgage notes payable, net	1,632,902	1,953,438
Notes, net	5,348,417	5,342,329
Line of credit and commercial paper	409,131	129,955
Accounts payable and accrued expenses	104,430	96,028
Accrued interest payable	65,716	66,310
Lease liabilities	311,640	308,748
Other liabilities	255,543	306,941
Security deposits	69,178	68,940
Distributions payable	259,231	244,621
Total liabilities	8,456,188	8,517,310
Commitments and contingencies
Redeemable Noncontrolling Interests – Operating Partnership	289,248	318,273
Shareholders' equity:
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 745,600 shares issued and outstanding as of December 31, 2023 and December 31, 2022	37,280	37,280
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 379,291,417 shares issued and outstanding as of December 31, 2023 and 378,429,708 shares issued and outstanding as of December 31, 2022	3,793	3,784
Paid in capital	9,601,866	9,476,085
Retained earnings	1,437,185	1,658,837
Accumulated other comprehensive income (loss)	5,704	(2,547)
Total shareholders’ equity	11,085,828	11,173,439
Noncontrolling Interests:
Operating Partnership	202,306	209,961
Partially Owned Properties	994	(721)
Total Noncontrolling Interests	203,300	209,240
Total equity	11,289,128	11,382,679
Total liabilities and equity/capital	$ 20,034,564	$ 20,218,262

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock, Shares Issued	745,600	745,600
Preferred Stock, Shares Outstanding	745,600	745,600
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued	379,291,417	378,429,708
Common Stock, Shares, Outstanding	379,291,417	378,429,708

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUES
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
EXPENSES
Property and maintenance	514,575	483,865	453,532
Real estate taxes and insurance	412,114	388,412	397,105
Property management	119,804	110,304	98,155
General and administrative	60,716	58,710	56,506
Depreciation	888,709	882,168	838,272
Total expenses	1,995,918	1,923,459	1,843,570
Net gain (loss) on sales of real estate properties	282,539	304,325	1,072,183
Impairment			(16,769)
Operating income	1,160,585	1,116,046	1,675,841
Interest and other income	22,345	2,193	25,666
Other expenses	(29,419)	(13,664)	(19,275)
Interest:
Expense incurred, net	(269,556)	(282,920)	(272,473)
Amortization of deferred financing costs	(8,941)	(8,729)	(8,737)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	875,014	812,926	1,401,022
Income and other tax (expense) benefit	(1,148)	(900)	(915)
Income (loss) from investments in unconsolidated entities	(5,378)	(5,031)	(3,398)
Net gain (loss) on sales of land parcels			5
Net income	868,488	806,995	1,396,714
Net (income) loss attributable to Noncontrolling Interests:
Operating Partnership	(26,710)	(26,310)	(45,900)
Partially Owned Properties	(6,340)	(3,774)	(17,964)
Net income attributable to controlling interests	835,438	776,911	1,332,850
Preferred distributions	(3,090)	(3,090)	(3,090)
Net income available to Common Shares	$ 832,348	$ 773,821	$ 1,329,760
Earnings per share – basic:
Net income available to Common Shares	$ 2.2	$ 2.06	$ 3.56
Weighted average Common Shares outstanding	378,773	376,209	373,833
Earnings per share – diluted:
Net income available to Common Shares	$ 2.2	$ 2.05	$ 3.54
Weighted average Common Shares outstanding	390,897	389,450	388,089

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Comprehensive income:
Net income	$ 868,488	$ 806,995	$ 1,396,714
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the year	4,514	20,654
Losses reclassified into earnings from other comprehensive income	3,737	11,071	9,394
Other comprehensive income (loss)	8,251	31,725	9,394
Comprehensive income	876,739	838,720	1,406,108
Comprehensive (income) attributable to Noncontrolling Interests	(33,307)	(31,132)	(64,183)
Comprehensive income attributable to controlling interests	$ 843,432	$ 807,588	$ 1,341,925

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 868,488
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	888,709
Amortization of deferred financing costs	8,941
Amortization of discounts and premiums on debt	4,091
Amortization of deferred settlements on derivative instruments	3,725
Amortization of right-of-use assets	12,795
Write-off of pursuit costs	3,647
(Income) loss from investments in unconsolidated entities	5,378
Distributions from unconsolidated entities – return on capital	559
Net (gain) loss on sales of real estate properties	(282,539)
Realized (gain) loss on investment securities	(1,504)
Unrealized (gain) loss on investment securities	(13,466)
Compensation paid with Company Common Shares	31,815
Changes in assets and liabilities:
(Increase) decrease in other assets	(10,203)
Increase (decrease) in accounts payable and accrued expenses	8,911
Increase (decrease) in accrued interest payable	(594)
Increase (decrease) in lease liabilities	(1,551)
Increase (decrease) in other liabilities	5,358
Increase (decrease) in security deposits	238
Net cash provided by operating activities	1,532,798
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – acquisitions	(324,497)
Investment in real estate – development/other	(78,197)
Capital expenditures to real estate	(319,342)
Non-real estate capital additions	(1,851)
Interest capitalized for real estate and unconsolidated entities under development	(12,347)
Proceeds from disposition of real estate, net	374,018
Investments in unconsolidated entities – acquisitions	(2,800)
Investments in unconsolidated entities - development/other	(47,180)
Distributions from unconsolidated entities – return of capital	42
Purchase of investment securities and other investments	(2,500)
Proceeds from sale of investment securities	3,042
Consolidation of previously unconsolidated entities	2,108
Net cash provided by (used for) investing activities	(409,504)
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(4,106)
Mortgage notes payable, net:
Proceeds	572,896
Lump sum payoffs	(932,598)
Scheduled principal repayments	(3,354)
Line of credit and commercial paper:
Commercial paper proceeds	6,124,068
Commercial paper repayments	(5,844,892)
Proceeds from (payments on) settlement of derivative instruments	25,169
Finance ground lease principal payments	(2,662)
Proceeds from Employee Share Purchase Plan (ESPP)	3,517
Proceeds from exercise of options	23,632
Common Shares repurchased and retired	(49,105)
Other financing activities, net	(75)
Acquisition of Noncontrolling Interests - Partially Owned Properties	(3,737)
Contributions – Noncontrolling Interests – Partially Owned Properties	9
Contributions – Noncontrolling Interests – Operating Partnership	1
Distributions:
Common Shares	(990,148)
Preferred Shares	(3,090)
Noncontrolling Interests – Operating Partnership	(30,253)
Noncontrolling Interests – Partially Owned Properties	(5,743)
Net cash provided by (used for) financing activities	(1,120,471)
Net increase (decrease) in cash and cash equivalents and restricted deposits	2,823
Cash and cash equivalents and restricted deposits, beginning of year	137,172
Cash and cash equivalents and restricted deposits, end of year	139,995
Cash and cash equivalents	50,743
Restricted deposits	89,252
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	248,990
Net cash paid (received) for income and other taxes	1,091
Real estate acquisitions/dispositions/other:
Mortgage loans assumed	42,256
Amortization of deferred financing costs:
Investment in real estate, net	(211)
Other assets	2,785
Mortgage notes payable, net	2,527
Notes, net	3,840
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	1,843
Notes, net	2,248
Amortization of deferred settlements on derivative instruments:
Other liabilities	(12)
Accumulated other comprehensive income	3,737
Write-off of pursuit costs:
Investment in real estate, net	527
Investments in unconsolidated entities	2,186
Other assets	934
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	4,132
Other liabilities	1,246
Realized/unrealized (gain) loss on derivative instruments:
Other assets	(3,749)
Other liabilities	(765)
Accumulated other comprehensive income	4,514
Interest capitalized for real estate and unconsolidated entities under development:
Investment in real estate, net	(4,010)
Investments in unconsolidated entities	(8,337)
Investments in unconsolidated entities - development/other:
Investments in unconsolidated entities	(45,770)
Other liabilities	(1,410)
Consolidation of previously unconsolidated entities:
Investment in real estate, net	(50,315)
Investments in unconsolidated entities	46,327
Accounts payable and accrued expenses	75
Other liabilities	2,000
Noncontrolling Interests - Partially Owned Properties	4,021
Debt financing costs:
Mortgage notes payable, net	(4,106)
Proceeds from (payments on) settlement of derivative instruments:
Other assets	25,613
Other liabilities	(444)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	(7,105)
Lease liabilities	7,105
Non-cash share distribution and other transfers from unconsolidated entities:
Investments in unconsolidated entities	636
Other assets	$ (636)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	PREFERRED SHARES	COMMON SHARES, $0.01 PAR VALUE	PAID IN CAPITAL	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	DISTRIBUTIONS	OPERATING PARTNERSHIP	PARTIALLY OWNED PROPERTIES
Balance, beginning of year at Dec. 31, 2020		$ 37,280	$ 3,723	$ 9,128,599	$ 1,399,715	$ (43,666)
Balance, beginning of year at Dec. 31, 2020								$ 233,162	$ 4,673
COMMON SHARES, $0.01 PAR VALUE
Conversion of OP Units into Common Shares			13	74,050
Issuance of Common Shares	$ 1,038
Exercise of share options			17	85,428
Employee Share Purchase Plan (ESPP)			1	4,264
Share-based employee compensation expense:
Issuance of restricted units/shares			1	8,388
Share options				3,101
ESPP discount				991
Offering costs				(428)
Supplemental Executive Retirement Plan (SERP)				(1,335)
Change in market value of Redeemable Noncontrolling Interests –Operating Partnership	158,598			(158,598)
Adjustment for Noncontrolling Interests ownership in Operating Partnership				(23,338)				23,338
PAID IN CAPITAL
Conversion of OP Units into Common Shares			13	74,050
Exercise of share options			17	85,428
Employee Share Purchase Plan (ESPP)			1	4,264
RETAINED EARNINGS
Net income attributable to controlling interests	1,332,850				1,332,850
Common Share distributions					(902,412)
Preferred Share distributions					(3,090)
Accumulated other comprehensive income (loss) - derivative instruments:
Losses reclassified into earnings from other comprehensive income	9,394					9,394
DISTRIBUTIONS
Distributions declared per Common Share outstanding							$ 2.41
NONCONTROLLING INTERESTS
Issuance of restricted units/shares			1	8,388
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner								(74,063)
Equity compensation associated with Noncontrolling Interests								17,797
Net income attributable to Noncontrolling Interests	45,900							45,900	17,964
Distributions to Noncontrolling Interests								(30,612)	(5,865)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	1,428							(1,428)
Adjustment for Noncontrolling Interests ownership in Operating Partnership				(23,338)				23,338
PARTIALLY OWNED PROPERTIES
Net income attributable to Noncontrolling Interests	45,900							45,900	17,964
Contributions by Noncontrolling Interests									1,394
Distributions to Noncontrolling Interests								(30,612)	(5,865)
Balance, end of year at Dec. 31, 2021		37,280	3,755	9,121,122	1,827,063	(34,272)
Balance, end of year at Dec. 31, 2021								214,094	18,166
COMMON SHARES, $0.01 PAR VALUE
Conversion of OP Units into Common Shares			4	11,919
Issuance of Common Shares	2,793		17	139,606
Exercise of share options			5	25,064
Employee Share Purchase Plan (ESPP)			1	4,177
Share-based employee compensation expense:
Issuance of restricted units/shares			2	11,593				1
Share options				2,321
ESPP discount				796
Offering costs				(783)
Supplemental Executive Retirement Plan (SERP)				(269)
Acquisition of Noncontrolling Interests – Partially Owned Properties				(27,383)					(4,795)
Change in market value of Redeemable Noncontrolling Interests –Operating Partnership	(176,490)			176,490
Adjustment for Noncontrolling Interests ownership in Operating Partnership				11,432				(11,432)
PAID IN CAPITAL
Conversion of OP Units into Common Shares			4	11,919
Exercise of share options			5	25,064
Employee Share Purchase Plan (ESPP)			1	4,177
RETAINED EARNINGS
Net income attributable to controlling interests	776,911				776,911
Common Share distributions					(942,047)
Preferred Share distributions					(3,090)
Accumulated other comprehensive income (loss) - derivative instruments:
Unrealized holding gains (losses) arising during the year	20,654					20,654
Losses reclassified into earnings from other comprehensive income	11,071					11,071
DISTRIBUTIONS
Distributions declared per Common Share outstanding							2.50
NONCONTROLLING INTERESTS
Issuance of restricted units/shares			2	11,593				1
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner								(11,923)
Equity compensation associated with Noncontrolling Interests								19,104
Net income attributable to Noncontrolling Interests	26,310							26,310	3,774
Distributions to Noncontrolling Interests								(30,407)	(18,469)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(4,214)							4,214
Adjustment for Noncontrolling Interests ownership in Operating Partnership				11,432				(11,432)
PARTIALLY OWNED PROPERTIES
Net income attributable to Noncontrolling Interests	26,310							26,310	3,774
Contributions by Noncontrolling Interests									603
Distributions to Noncontrolling Interests								(30,407)	(18,469)
Balance, end of year at Dec. 31, 2022	11,173,439	37,280	3,784	9,476,085	1,658,837	(2,547)
Balance, end of year at Dec. 31, 2022	209,240							209,961	(721)
COMMON SHARES, $0.01 PAR VALUE
Conversion of OP Units into Common Shares			10	23,938
Issuance of Common Shares	525
Exercise of share options			5	23,627
Employee Share Purchase Plan (ESPP)			1	3,516
Share-based employee compensation expense:
Issuance of restricted units/shares			2	12,484				1
Share options				4,628
ESPP discount				644
Supplemental Executive Retirement Plan (SERP)				32,078
Acquisition of Noncontrolling Interests – Partially Owned Properties				(900)					(2,837)
Change in market value of Redeemable Noncontrolling Interests –Operating Partnership	(7,667)			7,667
Adjustment for Noncontrolling Interests ownership in Operating Partnership				18,099				(18,099)
PAID IN CAPITAL
Conversion of OP Units into Common Shares			10	23,938
Exercise of share options			5	23,627
Employee Share Purchase Plan (ESPP)			1	3,516
Common Shares repurchased and retired	49,100		(9)		(49,096)
RETAINED EARNINGS
Net income attributable to controlling interests	835,438				835,438
Common Share distributions					(1,004,904)
Preferred Share distributions					(3,090)
Accumulated other comprehensive income (loss) - derivative instruments:
Unrealized holding gains (losses) arising during the year	4,514					4,514
Losses reclassified into earnings from other comprehensive income	3,737					3,737
DISTRIBUTIONS
Distributions declared per Common Share outstanding							$ 2.65
NONCONTROLLING INTERESTS
Issuance of restricted units/shares			2	12,484				1
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner								(23,948)
Equity compensation associated with Noncontrolling Interests								16,430
Net income attributable to Noncontrolling Interests	26,710							26,710	6,340
Distributions to Noncontrolling Interests								(30,107)	(5,818)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(21,358)							21,358
Adjustment for Noncontrolling Interests ownership in Operating Partnership				18,099				(18,099)
PARTIALLY OWNED PROPERTIES
Net income attributable to Noncontrolling Interests	26,710							26,710	6,340
Contributions by Noncontrolling Interests									9
Distributions to Noncontrolling Interests								(30,107)	(5,818)
Consolidation of previously unconsolidated entities									4,021
Balance, end of year at Dec. 31, 2023	11,085,828	$ 37,280	$ 3,793	$ 9,601,866	$ 1,437,185	$ 5,704
Balance, end of year at Dec. 31, 2023	$ 203,300							$ 202,306	$ 994

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01

CONSOLIDATED BALANCE SHEETS OF

CONSOLIDATED BALANCE SHEETS OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Land	$ 5,581,876	$ 5,580,878
Depreciable property	22,938,426	22,334,369
Projects under development	78,036	112,940
Land held for development	114,300	60,567
Investment in real estate	28,712,638	28,088,754
Accumulated depreciation	(9,810,337)	(9,027,850)
Investment in real estate, net	18,902,301	19,060,904
Investments in unconsolidated entities	282,049	279,024
Cash and cash equivalents	50,743	53,869
Restricted deposits	89,252	83,303
Right-of-use assets	457,266	462,956
Other assets	252,953	278,206
Total assets	20,034,564	20,218,262
Liabilities:
Mortgage notes payable, net	1,632,902	1,953,438
Notes, net	5,348,417	5,342,329
Line of credit and commercial paper	409,131	129,955
Accounts payable and accrued expenses	104,430	96,028
Accrued interest payable	65,716	66,310
Lease liabilities	311,640	308,748
Other liabilities	255,543	306,941
Security deposits	69,178	68,940
Distributions payable	259,231	244,621
Total liabilities	8,456,188	8,517,310
Commitments and contingencies
Redeemable Limited Partners	289,248	318,273
Partners’ Capital:
Accumulated other comprehensive income (loss)	5,704	(2,547)
Noncontrolling Interests – Partially Owned Properties	994	(721)
Total liabilities and equity/capital	20,034,564	20,218,262
ERPOP [Member]
ASSETS
Land	5,581,876	5,580,878
Depreciable property	22,938,426	22,334,369
Projects under development	78,036	112,940
Land held for development	114,300	60,567
Investment in real estate	28,712,638	28,088,754
Accumulated depreciation	(9,810,337)	(9,027,850)
Investment in real estate, net	18,902,301	19,060,904
Investments in unconsolidated entities	282,049	279,024
Cash and cash equivalents	50,743	53,869
Restricted deposits	89,252	83,303
Right-of-use assets	457,266	462,956
Other assets	252,953	278,206
Total assets	20,034,564	20,218,262
Liabilities:
Mortgage notes payable, net	1,632,902	1,953,438
Notes, net	5,348,417	5,342,329
Line of credit and commercial paper	409,131	129,955
Accounts payable and accrued expenses	104,430	96,028
Accrued interest payable	65,716	66,310
Lease liabilities	311,640	308,748
Other liabilities	255,543	306,941
Security deposits	69,178	68,940
Distributions payable	259,231	244,621
Total liabilities	8,456,188	8,517,310
Commitments and contingencies
Redeemable Limited Partners	289,248	318,273
Partners’ Capital:
Preference Units	37,280	37,280
General Partner	11,042,844	11,138,706
Limited Partners	202,306	209,961
Accumulated other comprehensive income (loss)	5,704	(2,547)
Total partners’ capital	11,288,134	11,383,400
Noncontrolling Interests – Partially Owned Properties	994	(721)
Total capital	11,289,128	11,382,679
Total liabilities and equity/capital	$ 20,034,564	$ 20,218,262

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUES
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
EXPENSES
Property and maintenance	514,575	483,865	453,532
Real estate taxes and insurance	412,114	388,412	397,105
Property management	119,804	110,304	98,155
General and administrative	60,716	58,710	56,506
Depreciation	888,709	882,168	838,272
Total expenses	1,995,918	1,923,459	1,843,570
Net gain (loss) on sales of real estate properties	282,539	304,325	1,072,183
Impairment			(16,769)
Operating income	1,160,585	1,116,046	1,675,841
Interest and other income	22,345	2,193	25,666
Other expenses	(29,419)	(13,664)	(19,275)
Interest:
Expense incurred, net	(269,556)	(282,920)	(272,473)
Amortization of deferred financing costs	(8,941)	(8,729)	(8,737)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	875,014	812,926	1,401,022
Income and other tax (expense) benefit	(1,148)	(900)	(915)
Income (loss) from investments in unconsolidated entities	(5,378)	(5,031)	(3,398)
Net gain (loss) on sales of land parcels			5
Net income	868,488	806,995	1,396,714
Partially Owned Properties	(6,340)	(3,774)	(17,964)
Net income attributable to controlling interests	$ 835,438	$ 776,911	$ 1,332,850
Earnings per Unit – basic:
Net income available to Units	$ 2.2	$ 2.06	$ 3.56
Earnings per Unit – diluted:
Net income available to Units	$ 2.2	$ 2.05	$ 3.54
Weighted average Units outstanding	390,897	389,450	388,089
ERPOP [Member]
REVENUES
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
EXPENSES
Property and maintenance	514,575	483,865	453,532
Real estate taxes and insurance	412,114	388,412	397,105
Property management	119,804	110,304	98,155
General and administrative	60,716	58,710	56,506
Depreciation	888,709	882,168	838,272
Total expenses	1,995,918	1,923,459	1,843,570
Net gain (loss) on sales of real estate properties	282,539	304,325	1,072,183
Impairment			(16,769)
Operating income	1,160,585	1,116,046	1,675,841
Interest and other income	22,345	2,193	25,666
Other expenses	(29,419)	(13,664)	(19,275)
Interest:
Expense incurred, net	(269,556)	(282,920)	(272,473)
Amortization of deferred financing costs	(8,941)	(8,729)	(8,737)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	875,014	812,926	1,401,022
Income and other tax (expense) benefit	(1,148)	(900)	(915)
Income (loss) from investments in unconsolidated entities	(5,378)	(5,031)	(3,398)
Net gain (loss) on sales of land parcels			5
Net income	868,488	806,995	1,396,714
Partially Owned Properties	(6,340)	(3,774)	(17,964)
Net income attributable to controlling interests	862,148	803,221	1,378,750
ALLOCATION OF NET INCOME:
Preference Units	3,090	3,090	3,090
General Partner	832,348	773,821	1,329,760
Limited Partners	26,710	26,310	45,900
Net income available to Units	$ 859,058	$ 800,131	$ 1,375,660
Earnings per Unit – basic:
Net income available to Units	$ 2.2	$ 2.06	$ 3.56
Weighted average Units outstanding	389,954	388,045	386,096
Earnings per Unit – diluted:
Net income available to Units	$ 2.2	$ 2.05	$ 3.54
Weighted average Units outstanding	390,897	389,450	388,089

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Comprehensive income:
Net income	$ 868,488	$ 806,995	$ 1,396,714
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the year	4,514	20,654
Losses reclassified into earnings from other comprehensive income	3,737	11,071	9,394
Other comprehensive income (loss)	8,251	31,725	9,394
Comprehensive income	876,739	838,720	1,406,108
Comprehensive (income) attributable to Noncontrolling Interests – Partially Owned Properties	(33,307)	(31,132)	(64,183)
Comprehensive income attributable to controlling interests	843,432	807,588	1,341,925
ERPOP [Member]
Comprehensive income:
Net income	868,488	806,995	1,396,714
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the year	4,514	20,654
Losses reclassified into earnings from other comprehensive income	3,737	11,071	9,394
Other comprehensive income (loss)	8,251	31,725	9,394
Comprehensive income	876,739	838,720	1,406,108
Comprehensive (income) attributable to Noncontrolling Interests – Partially Owned Properties	(6,340)	(3,774)	(17,964)
Comprehensive income attributable to controlling interests	$ 870,399	$ 834,946	$ 1,388,144

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 868,488	$ 806,995	$ 1,396,714
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	888,709	882,168	838,272
Amortization of deferred financing costs	8,941	8,729	8,737
Amortization of above/below market lease intangibles			(154)
Amortization of discounts and premiums on debt	4,091	5,004	5,302
Amortization of deferred settlements on derivative instruments	3,725	11,059	9,382
Amortization of right-of-use assets	12,795	12,157	13,266
Impairment			16,769
Write-off of pursuit costs	3,647	4,780	6,526
(Income) loss from investments in unconsolidated entities	5,378	5,031	3,398
Distributions from unconsolidated entities – return on capital	559	398	56
Net (gain) loss on sales of real estate properties	(282,539)	(304,325)	(1,072,183)
Net (gain) loss on sales of land parcels			(5)
Realized (gain) loss on investment securities	(1,504)	(2,061)	(23,432)
Unrealized (gain) loss on investment securities	(13,466)
Compensation paid with Company Common Shares	31,815	29,513	27,810
Changes in assets and liabilities:
(Increase) decrease in other assets	(10,203)	10,893	5,906
Increase (decrease) in accounts payable and accrued expenses	8,911	(266)	15,381
Increase (decrease) in accrued interest payable	(594)	(3,200)	3,614
Increase (decrease) in lease liabilities	(1,551)	(1,524)	(5,122)
Increase (decrease) in other liabilities	5,358	(13,394)	4,286
Increase (decrease) in security deposits	238	2,799	5,661
Net cash provided by operating activities	1,532,798	1,454,756	1,260,184
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – acquisitions	(324,497)	(113,046)	(1,712,131)
Investment in real estate – development/other	(78,197)	(109,345)	(206,421)
Capital expenditures to real estate	(319,342)	(221,086)	(151,019)
Non-real estate capital additions	(1,851)	(4,050)	(1,696)
Interest capitalized for real estate and unconsolidated entities under development	(12,347)	(7,105)	(15,932)
Proceeds from disposition of real estate, net	374,018	720,302	1,707,747
Investments in unconsolidated entities – acquisitions	(2,800)	(49,855)	(48,534)
Investments in unconsolidated entities - development/other	(47,180)	(109,846)	(31,257)
Distributions from unconsolidated entities – return of capital	42	300	1,516
Purchase of investment securities and other investments	(2,500)	(2,061)	(168,291)
Proceeds from sale of investment securities	3,042	3,584	191,398
Consolidation of previously unconsolidated entities	2,108
Net cash provided by (used for) investing activities	(409,504)	107,792	(434,620)
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(4,106)	(9,894)	(6,446)
Mortgage notes payable, net:
Proceeds	572,896	48,054	58,428
Lump sum payoffs	(932,598)	(286,461)	(156,815)
Scheduled principal repayments	(3,354)	(3,392)	(7,465)
Notes, net:
Proceeds			497,470
Lump sum payoffs		(500,000)
Line of credit and commercial paper:
Line of credit proceeds			10,000
Line of credit repayments			(10,000)
Commercial paper proceeds	6,124,068	6,036,083	7,590,200
Commercial paper repayments	(5,844,892)	(6,221,158)	(7,690,000)
Proceeds from (payments on) settlement of derivative instruments	25,169
Finance ground lease principal payments	(2,662)	(2,463)	(365)
Proceeds from sale of OP Units		139,623
Proceeds from Employee Share Purchase Plan (ESPP)	3,517	4,178	4,265
Proceeds from exercise of EQR options	23,632	25,069	85,445
Payment of offering costs		(783)	(428)
Other financing activities, net	(75)	(63)	(63)
Acquisition of Noncontrolling Interests - Partially Owned Properties	(3,737)	(32,178)
Contributions – Noncontrolling Interests – Partially Owned Properties	9	603	1,394
Contributions – Limited Partners	1	1
Distributions:
OP Units – General Partner	(990,148)	(931,783)	(900,468)
Preference Units	(3,090)	(2,318)	(3,090)
OP Units – Limited Partners	(30,253)	(30,324)	(31,316)
Noncontrolling Interests – Partially Owned Properties	(5,743)	(18,406)	(5,802)
Net cash provided by (used for) financing activities	(1,120,471)	(1,785,612)	(565,056)
Net increase (decrease) in cash and cash equivalents and restricted deposits	2,823	(223,064)	260,508
Cash and cash equivalents and restricted deposits, beginning of year	137,172	360,236	99,728
Cash and cash equivalents and restricted deposits, end of year	139,995	137,172	360,236
Cash and cash equivalents	50,743	53,869	123,832
Restricted deposits	89,252	83,303	236,404
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	248,990	267,612	252,838
Net cash paid (received) for income and other taxes	1,091	748	1,179
Real estate acquisitions/dispositions/other:
Mortgage loans assumed	42,256
Amortization of deferred financing costs:
Investment in real estate, net	(211)	(506)	(353)
Other assets	2,785	2,768	2,338
Mortgage notes payable, net	2,527	2,080	2,743
Notes, net	3,840	4,387	4,009
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	1,843	2,184	2,764
Notes, net	2,248	2,820	2,538
Amortization of deferred settlements on derivative instruments:
Other liabilities	(12)	(12)	(12)
Accumulated other comprehensive income	3,737	11,071	9,394
Write-off of pursuit costs:
Investment in real estate, net	527	1,150	5,918
Investments in unconsolidated entities	2,186	2,898
Other assets	934	732	582
Accounts payable and accrued expenses			26
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	4,132	3,778	2,122
Other liabilities	1,246	1,253	1,276
Realized/unrealized (gain) loss on derivative instruments:
Other assets	(3,749)	(21,865)
Other liabilities	(765)	1,211
Accumulated other comprehensive income	4,514	20,654
Interest capitalized for real estate and unconsolidated entities under development:
Investment in real estate, net	4,010	2,365	15,318
Investments in unconsolidated entities	(8,337)	(4,740)	(614)
Investments in unconsolidated entities - development/other:
Investment in real estate, net			1,395
Investments in unconsolidated entities	(45,770)	(108,556)	(30,642)
Other liabilities	(1,410)	(1,290)	(2,010)
Consolidation of previously unconsolidated entities:
Investment in real estate, net	(50,315)
Investments in unconsolidated entities	46,327
Accounts payable and accrued expenses	75
Other liabilities	2,000
Noncontrolling Interests - Partially Owned Properties	4,021
Debt financing costs:
Other assets		(9,566)	229
Mortgage notes payable, net	(4,106)	(228)	(2,344)
Notes, net		(100)	(4,331)
Proceeds from (payments on) settlement of derivative instruments:
Other assets	25,613
Other liabilities	(444)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	(7,105)	(400)	11,308
Lease liabilities	7,105	400	(11,308)
Non-cash share distribution and other transfers from unconsolidated entities:
Investments in unconsolidated entities	636	4,201	1,430
Other assets	(636)	(4,201)	(1,430)
ERPOP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	868,488	806,995	1,396,714
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	888,709	882,168	838,272
Amortization of deferred financing costs	8,941	8,729	8,737
Amortization of above/below market lease intangibles			(154)
Amortization of discounts and premiums on debt	4,091	5,004	5,302
Amortization of deferred settlements on derivative instruments	3,725	11,059	9,382
Amortization of right-of-use assets	12,795	12,157	13,266
Impairment			16,769
Write-off of pursuit costs	3,647	4,780	6,526
(Income) loss from investments in unconsolidated entities	5,378	5,031	3,398
Distributions from unconsolidated entities – return on capital	559	398	56
Net (gain) loss on sales of real estate properties	(282,539)	(304,325)	(1,072,183)
Net (gain) loss on sales of land parcels			(5)
Realized (gain) loss on investment securities	(1,504)	(2,061)	(23,432)
Unrealized (gain) loss on investment securities	(13,466)
Compensation paid with Company Common Shares	31,815	29,513	27,810
Changes in assets and liabilities:
(Increase) decrease in other assets	(10,203)	10,893	5,906
Increase (decrease) in accounts payable and accrued expenses	8,911	(266)	15,381
Increase (decrease) in accrued interest payable	(594)	(3,200)	3,614
Increase (decrease) in lease liabilities	(1,551)	(1,524)	(5,122)
Increase (decrease) in other liabilities	5,358	(13,394)	4,286
Increase (decrease) in security deposits	238	2,799	5,661
Net cash provided by operating activities	1,532,798	1,454,756	1,260,184
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – acquisitions	(324,497)	(113,046)	(1,712,131)
Investment in real estate – development/other	(78,197)	(109,345)	(206,421)
Capital expenditures to real estate	(319,342)	(221,086)	(151,019)
Non-real estate capital additions	(1,851)	(4,050)	(1,696)
Interest capitalized for real estate and unconsolidated entities under development	(12,347)	(7,105)	(15,932)
Proceeds from disposition of real estate, net	374,018	720,302	1,707,747
Investments in unconsolidated entities – acquisitions	(2,800)	(49,855)	(48,534)
Investments in unconsolidated entities - development/other	(47,180)	(109,846)	(31,257)
Distributions from unconsolidated entities – return of capital	42	300	1,516
Purchase of investment securities and other investments	(2,500)	(2,061)	(168,291)
Proceeds from sale of investment securities	3,042	3,584	191,398
Consolidation of previously unconsolidated entities	2,108
Net cash provided by (used for) investing activities	(409,504)	107,792	(434,620)
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(4,106)	(9,894)	(6,446)
Mortgage notes payable, net:
Proceeds	572,896	48,054	58,428
Lump sum payoffs	(932,598)	(286,461)	(156,815)
Scheduled principal repayments	(3,354)	(3,392)	(7,465)
Notes, net:
Proceeds			497,470
Lump sum payoffs		(500,000)
Line of credit and commercial paper:
Line of credit proceeds			10,000
Line of credit repayments			(10,000)
Commercial paper proceeds	6,124,068	6,036,083	7,590,200
Commercial paper repayments	(5,844,892)	(6,221,158)	(7,690,000)
Proceeds from (payments on) settlement of derivative instruments	25,169
Finance ground lease principal payments	(2,662)	(2,463)	(365)
Proceeds from sale of OP Units		139,623
Proceeds from Employee Share Purchase Plan (ESPP)	3,517	4,178	4,265
Proceeds from exercise of EQR options	23,632	25,069	85,445
OP Units repurchased and retired	(49,105)
Payment of offering costs		(783)	(428)
Other financing activities, net	(75)	(63)	(63)
Acquisition of Noncontrolling Interests - Partially Owned Properties	(3,737)	(32,178)
Contributions – Noncontrolling Interests – Partially Owned Properties	9	603	1,394
Contributions – Limited Partners	1	1
Distributions:
OP Units – General Partner	(990,148)	(931,783)	(900,468)
Preference Units	(3,090)	(2,318)	(3,090)
OP Units – Limited Partners	(30,253)	(30,324)	(31,316)
Noncontrolling Interests – Partially Owned Properties	(5,743)	(18,406)	(5,802)
Net cash provided by (used for) financing activities	(1,120,471)	(1,785,612)	(565,056)
Net increase (decrease) in cash and cash equivalents and restricted deposits	2,823	(223,064)	260,508
Cash and cash equivalents and restricted deposits, beginning of year	137,172	360,236	99,728
Cash and cash equivalents and restricted deposits, end of year	139,995	137,172	360,236
Cash and cash equivalents	50,743	53,869	123,832
Restricted deposits	89,252	83,303	236,404
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	248,990	267,612	252,838
Net cash paid (received) for income and other taxes	1,091	748	1,179
Real estate acquisitions/dispositions/other:
Mortgage loans assumed	42,256
Amortization of deferred financing costs:
Investment in real estate, net	(211)	(506)	(353)
Other assets	2,785	2,768	2,338
Mortgage notes payable, net	2,527	2,080	2,743
Notes, net	3,840	4,387	4,009
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	1,843	2,184	2,764
Notes, net	2,248	2,820	2,538
Amortization of deferred settlements on derivative instruments:
Other liabilities	(12)	(12)	(12)
Accumulated other comprehensive income	3,737	11,071	9,394
Write-off of pursuit costs:
Investment in real estate, net	527	1,150	5,918
Investments in unconsolidated entities	2,186	2,898
Other assets	934	732	582
Accounts payable and accrued expenses			26
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	4,132	3,778	2,122
Other liabilities	1,246	1,253	1,276
Realized/unrealized (gain) loss on derivative instruments:
Other assets	(3,749)	(21,865)
Other liabilities	(765)	1,211
Accumulated other comprehensive income	4,514	20,654
Interest capitalized for real estate and unconsolidated entities under development:
Investment in real estate, net	(4,010)	(2,365)	(15,318)
Investments in unconsolidated entities	(8,337)	(4,740)	(614)
Investments in unconsolidated entities - development/other:
Investment in real estate, net			1,395
Investments in unconsolidated entities	(45,770)	(108,556)	(30,642)
Other liabilities	(1,410)	(1,290)	(2,010)
Consolidation of previously unconsolidated entities:
Investment in real estate, net	(50,315)
Investments in unconsolidated entities	46,327
Accounts payable and accrued expenses	75
Other liabilities	2,000
Noncontrolling Interests - Partially Owned Properties	4,021
Debt financing costs:
Other assets		(9,566)	229
Mortgage notes payable, net	(4,106)	(228)	(2,344)
Notes, net		(100)	(4,331)
Proceeds from (payments on) settlement of derivative instruments:
Other assets	25,613
Other liabilities	(444)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	(7,105)	(400)	11,308
Lease liabilities	7,105	400	(11,308)
Non-cash share distribution and other transfers from unconsolidated entities:
Investments in unconsolidated entities	636	4,201	1,430
Other assets	$ (636)	$ (4,201)	$ (1,430)

CONSOLIDATED STATEMENTS OF CH_3

CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) $ in Thousands	Total	ERPOP [Member]	PREFERRED SHARES ERPOP [Member]	General Partner [Member] ERPOP [Member]	Limited Partner ERPOP [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ERPOP [Member]	DISTRIBUTIONS [Member] ERPOP [Member]	PARTIALLY OWNED PROPERTIES [Member] ERPOP [Member]
Balance, beginning of year at Dec. 31, 2020			$ 37,280	$ 10,532,037	$ 233,162	$ (43,666)
Balance, beginning of year at Dec. 31, 2020								$ 4,673
Conversion of OP Units held by Limited Partners into OP Units held by General Partner				74,063	(74,063)
Exercise of EQR share options				85,445
EQR's Employee Share Purchase Plan (ESPP)				4,265
EQR restricted shares				8,389
EQR share options				3,101
EQR ESPP discount				991
Net income available to Units - General Partner		$ 1,329,760		1,329,760
OP Units - General Partner distributions				(902,412)
Offering costs				(428)
Supplemental Executive Retirement Plan (SERP)				(1,335)
Change in market value of Redeemable Limited Partners				(158,598)
Losses reclassified into earnings from other comprehensive income	$ 9,394	9,394				9,394
Equity compensation associated with Units - Limited Partners					17,797
Net income available to Units - Limited Partners		45,900			45,900
Units - Limited Partners distributions					(30,612)
Change in carrying value of Redeemable Limited Partners					(1,428)
Adjustment for Limited Partners ownership in Operating Partnership				(23,338)	23,338
Distributions declared per Unit outstanding							$ 2.41
Net income attributable to Noncontrolling Interests	1,396,714	1,396,714						17,964
Contributions by Noncontrolling Interests								1,394
Distributions to Noncontrolling Interests								(5,865)
Balance, end of year at Dec. 31, 2021			37,280	10,951,940	214,094	(34,272)
Balance, end of year at Dec. 31, 2021								18,166
Conversion of OP Units held by Limited Partners into OP Units held by General Partner				11,923	(11,923)
Issuance of OP Units				139,623
Exercise of EQR share options				25,069
EQR's Employee Share Purchase Plan (ESPP)				4,178
EQR restricted shares				11,595	1
EQR share options				2,321
EQR ESPP discount				796
Net income available to Units - General Partner		773,821		773,821
OP Units - General Partner distributions				(942,047)
Offering costs				(783)
Supplemental Executive Retirement Plan (SERP)				(269)
Acquisition of Noncontrolling Interest - Partially Owned Properties				(27,383)
Change in market value of Redeemable Limited Partners				176,490
Unrealized holding gains (losses) arising during the year	20,654	20,654				20,654
Losses reclassified into earnings from other comprehensive income	11,071	11,071				11,071
Equity compensation associated with Units - Limited Partners					19,104
Net income available to Units - Limited Partners		26,310			26,310
Units - Limited Partners distributions					(30,407)
Change in carrying value of Redeemable Limited Partners					4,214
Adjustment for Limited Partners ownership in Operating Partnership				11,432	(11,432)
Distributions declared per Unit outstanding							2.50
Net income attributable to Noncontrolling Interests	806,995	806,995						3,774
Contributions by Noncontrolling Interests								603
Distributions to Noncontrolling Interests								(18,469)
Acquisitions of Noncontrolling Interests - Partially Owned Properties								(4,795)
Balance, end of year at Dec. 31, 2022			37,280	11,138,706	209,961	(2,547)
Balance, end of year at Dec. 31, 2022								(721)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner				23,948	(23,948)
Exercise of EQR share options				23,632
EQR's Employee Share Purchase Plan (ESPP)				3,517
EQR restricted shares				12,486	1
EQR share options				4,628
EQR ESPP discount				644
OP Units repurchased and retired				(49,105)
Net income available to Units - General Partner		832,348		832,348
OP Units - General Partner distributions				(1,004,904)
Supplemental Executive Retirement Plan (SERP)				32,078
Acquisition of Noncontrolling Interest - Partially Owned Properties				(900)
Change in market value of Redeemable Limited Partners				7,667
Unrealized holding gains (losses) arising during the year	4,514	4,514				4,514
Losses reclassified into earnings from other comprehensive income	3,737	3,737				3,737
Equity compensation associated with Units - Limited Partners					16,430
Net income available to Units - Limited Partners		26,710			26,710
Units - Limited Partners distributions					(30,107)
Change in carrying value of Redeemable Limited Partners					21,358
Adjustment for Limited Partners ownership in Operating Partnership				18,099	(18,099)
Distributions declared per Unit outstanding							$ 2.65
Net income attributable to Noncontrolling Interests	$ 868,488	$ 868,488						6,340
Contributions by Noncontrolling Interests								9
Distributions to Noncontrolling Interests								(5,818)
Acquisitions of Noncontrolling Interests - Partially Owned Properties								(2,837)
Consolidation of previously unconsolidated entities								4,021
Balance, end of year at Dec. 31, 2023			$ 37,280	$ 11,042,844	$ 202,306	$ 5,704
Balance, end of year at Dec. 31, 2023								$ 994

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pay vs Performance Disclosure
Net Income (Loss)	$ 835,438	$ 776,911	$ 1,332,850

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Business

Business	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business	1. Bus iness Equity Residential (“EQR”) is an S&P 500 company focused on the acquisition, development and management of residential properties located in and around dynamic cities that attract affluent long-term renters, a business that is conducted on its behalf by ERP Operating Limited Partnership (“ERPOP”). EQR is a Maryland real estate investment trust (“REIT”) formed in March 1993 and ERPOP is an Illinois limited partnership formed in May 1993. References to the “Company,” “we,” “us” or “our” mean collectively EQR, ERPOP and those entities/subsidiaries owned or controlled by EQR and/or ERPOP. References to the “Operating Partnership” mean collectively ERPOP and those entities/subsidiaries owned or controlled by ERPOP. Unless otherwise indicated, the notes to consolidated financial statements apply to both the Company and the Operating Partnership. EQR is the general partner of, and as of December 31, 2023 owned an approximate 97.0 % ownership interest in, ERPOP. All of the Company’s property ownership, development and related business operations are conducted through the Operating Partnership and EQR has no material assets or liabilities other than its investment in ERPOP. EQR issues equity from time to time, the net proceeds of which it is obligated to contribute to ERPOP, but does not have any indebtedness as all debt is incurred by the Operating Partnership. The Operating Partnership holds substantially all of the assets of the Company, including the Company’s ownership interests in its joint ventures. The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity. As of December 31, 2023, the Company, directly or indirectly through investments in title holding entities, owned all or a portion of 302 properties located in 10 states and the District of Columbia consisting of 80,191 apartment units. The ownership breakdown includes (table does not include any uncompleted development properties): Properties Apartment Units Wholly Owned Properties 288 77,131 Partially Owned Properties – Consolidated 14 3,060 302 80,191

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Summary Of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation Due to the Company’s ability as general partner to control either through ownership or by contract the Operating Partnership and its subsidiaries, the Operating Partnership and each such subsidiary has been consolidated with the Company for financial reporting purposes, except for any unconsolidated properties/entities. Real Estate Assets and Depreciation of Investment in Real Estate The Company expects that substantially all of its acquisitions will be accounted for as asset acquisitions. In an asset acquisition, the Company is required to capitalize transaction costs and allocate the purchase price on a relative fair value basis (including any identified intangible assets). For the years ended December 31, 2023 and 2022, all acquisitions were considered asset acquisitions. In making estimates of relative fair values for purposes of allocating purchase price, the Company utilizes a number of sources, including independent appraisals that may be obtained in connection with the acquisition or financing of the respective property, our own analysis of recently acquired or developed and existing comparable properties in our portfolio and other market data. The Company also considers information obtained about each property as a result of its pre-acquisition due diligence, marketing and leasing activities in estimating the relative fair value of the tangible and intangible assets/liabilities acquired. The Company allocates the purchase price of acquired real estate to various components as follows: • Land – Based on actual purchase price adjusted to an allocation of the relative fair value (as necessary) if acquired separately or market research/comparables if acquired with an operating property. • Furniture, Fixtures and Equipment – Based on an estimate of the allocation of the relative fair value of the appliances and fixtures inside an apartment unit. The per-apartment unit amount applied depends on the economic age of the apartment units acquired. Depreciation is calculated on the straight-line method over an estimated useful life of five to ten years . • Lease Intangibles – The Company considers the value of acquired in-place leases and above/below market leases and the amortization period is the average remaining term of each respective acquired lease. • Other Intangible Assets – The Company considers whether it has acquired other intangible assets, including any customer relationship intangibles and the amortization period is the estimated useful life of the acquired intangible asset. • Building – Based on the allocation of the relative fair value determined on an “as-if vacant” basis. Depreciation is calculated on the straight-line method over an estimated useful life of thirty years . • Long-Term Debt – The Company calculates the allocation of the relative fair value by discounting the remaining contractual cash flows on each instrument at the current market rate for those borrowings. Replacements inside an apartment unit such as appliances and carpeting are depreciated over an estimated useful life of five to ten years . Expenditures for ordinary maintenance and repairs are expensed to operations as incurred and significant renovations and building improvements that improve and/or extend the useful life of the asset are capitalized over their estimated useful life, generally five to fifteen years . Initial direct leasing costs are expensed as incurred as such expense approximates the deferral and amortization of initial direct leasing costs over the lease terms. The Company classifies real estate assets as real estate held for sale when it is probable a property will be disposed of. The Company classifies properties under development and/or expansion and properties in the lease-up phase (including land) as construction-in-progress until construction has been completed and certificates of occupancy permits have been obtained. Impairment of Long-Lived Assets At least quarterly, the Company evaluates its long-lived assets, including its investment in real estate, for indicators of impairment. The judgments regarding the existence of impairment indicators are based on factors such as operational performance, market conditions, legal, regulatory and environmental concerns, the Company’s intent and ability to hold the related asset, as well as any significant cost overruns on development properties. Future events could occur which would cause the Company to conclude that impairment indicators exist and an impairment loss is warranted. If an impairment indicator exists, the Company performs the following: • For long-lived operating assets to be held and used, the Company compares the expected future undiscounted cash flows for the long-lived asset against the carrying amount of that asset. If the sum of the estimated undiscounted cash flows is less than the carrying amount of the asset, the Company would make an estimate of the fair value for the particular asset and would record an impairment loss for the difference between the estimated fair value and the carrying amount of the asset. In determining the future undiscounted cash flows or the estimated fair value of an asset there is judgment in estimating the expected future rental revenues, operating expenses and discount and capitalization rates. • For long-lived non-operating assets (projects under development and land held for development), management evaluates major cost overruns, market conditions that could affect lease-up projections, intent and ability to hold the asset, and any other indicators of impairment. If any of the indicators were to suggest impairment was present, a recoverability analysis would be performed and the carrying value of the asset would be adjusted accordingly to fair value. • For long-lived assets to be disposed of, an impairment loss is recognized when the estimated fair value of the asset, less the estimated cost to sell, is less than the carrying amount of the asset measured at the time that the Company has determined it is probable that the asset will be disposed of. Long-lived assets held for sale and the related liabilities are separately reported, with the long-lived assets reported at the lower of their carrying amounts or their estimated fair values, less their costs to sell, and are not depreciated after reclassification to real estate held for sale. See Note 4 for further discussion of the Company’s impairment charge on a land parcel in 2021. Impairment of Investments in Unconsolidated Entities and Other Investments At least quarterly, the Company evaluates its investments in unconsolidated entities and other investments for indicators of other than temporary impairment, considering whether there has been a change to events or circumstances that would impact recoverability of the Company’s investment as well as any changes with regards to the Company's intent and ability to hold the investment to recover its carrying value. Cost Capitalization See the Real Estate Assets and Depreciation of Investment in Real Estate section for a discussion of the Company’s policy with respect to capitalization vs. expensing of fixed asset/repair and maintenance costs. For all development, capital and renovation projects, the Company uses its professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. The Company capitalizes interest, real estate taxes and insurance, as well as payroll for those individuals directly responsible for and who spend their time on the execution and supervision of development activities. Additionally, the Company capitalizes payroll for those individuals directly responsible for and who spend their time on the execution and supervision of major capital and/or renovation projects. Capitalization ends when the asset, or a portion of the asset, is substantially completed and ready for its intended use. These costs are reflected on the balance sheets as increases to depreciable property and/or construction-in-progress. During the years ended December 31, 2023 and 2022, the Company capitalized $ 15.4 mil lion and $ 15.6 million, respectively, of payroll and associated costs of employees directly responsible for and who spend their time on the execution and supervision of development activities as well as major capital and/or renovation projects. Cash and Cash Equivalents The Company considers all demand deposits, money market accounts and investments in certificates of deposit with a maturity of three months or less at the date of purchase to be cash equivalents. The Company maintains its cash and cash equivalents at financial institutions. The combined account balances at one or more institutions typically exceed the Federal Deposit Insurance Corporation (“FDIC”) insurance coverage, and, as a result, there is a concentration of credit risk related to amounts on deposit in excess of FDIC insurance coverage. The Company believes that the risk is not significant, as the Company does not anticipate the financial institutions’ non-performance. Fair Value of Financial Instruments The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments. The Company, where possible, bases the fair values of its financial instruments on listed market prices and third-party quotes. Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments. In the normal course of business, the Company is exposed to the effect of interest rate changes. The Company may seek to manage these risks by following established risk management policies and procedures, including the use of derivatives to hedge interest rate risk on debt instruments. The Company may also use derivatives to manage commodity prices in the daily operations of the business. The Company has a policy of only entering into derivative contracts with major financial institutions based upon their credit ratings and other factors. When viewed in conjunction with the underlying and offsetting exposure that the derivatives are designed to hedge, the Company has not sustained a material loss from these instruments nor does it anticipate any material adverse effect on its net income or financial position in the future. The Company recognizes all derivatives as either assets or liabilities in the consolidated balance sheets and measures those instruments at fair value. In addition, fair value adjustments will affect either shareholders’ equity/partners’ capital or net income depending on whether the derivative instruments qualify as a hedge for accounting purposes and, if so, the nature of the hedging activity. When the terms of an underlying transaction are modified, or when the underlying transaction is terminated or completed, all changes in the fair value of the instrument are marked-to-market with changes in value included in net income each period until the instrument matures. Any derivative instrument used for risk management that does not meet the hedging criteria is marked-to-market each period. The Company does not use derivatives for trading or speculative purposes. See Note 10 for additional derivatives discussion. Leases and Revenue Recognition Rental income attributable to residential leases is recorded on a straight-line basis over the term of the lease when reasonably assured they are collectible, which is not materially different than if it were recorded when due from residents and recognized monthly as it was earned. Residential apartment leases may include lease income related to such items as utility recoveries, parking rent, storage rent and pet rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same. Leases entered into between a resident and a property for the rental of an apartment unit are generally year-to-year, renewable upon consent of both parties on an annual or monthly basis. Rental income attributable to non-residential leases is also recorded on a straight-line basis over the term of the lease when reasonably assured they are collectible. Non-residential leases may include lease income related to such items as utility recoveries, parking rent and storage rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same. Non-residential leases generally have five to ten year lease terms with market-based renewal options and consist of ground floor retail spaces and master-leased parking garages that serve as additional amenities for our residents. The majority of the Company’s revenue is derived from residential, non-residential and other lease income. Our revenue streams have the same timing and pattern of revenue recognition across our reportable segments, with consistent allocations between the lease and revenue recognition standards. The Company elected an accounting policy to account for both its lease and non-lease components (specifically common area maintenance charges) as a single lease component under the lease standard. The Company is a lessor for its residential and non-residential leases and is a lessee for its corporate headquarters and regional offices and ground leases for land underlying current operating properties or projects under development. If applicable, lease agreements must be evaluated to determine the accounting treatment as a finance or operating lease in accordance with the lease standard. The lease standard also requires lessees to recognize on the balance sheet: (a) a liability for the lease obligation (initially measured at the present value of the future lease payments not yet paid over the lease term); and (b) an asset for its right to use the underlying asset (initially equal to the lease liability). The Company uses estimates and judgments on the discount rate used to calculate the present value of the future lease payments. The Company uses its incremental borrowing rate as the discount rate because the Company typically cannot readily determine the rate implicit in the lease. Since the Company’s credit backs the corporate office lease obligations and the lease terms are generally ten years or less, the discount rate range was estimated by using the Company’s borrowing rates for actual pricing data. The discount rate range for ground leases takes into account various factors, including the longer life of the ground leases, and was estimated by using the Company’s borrowing rates for actual pricing data through 30 years and other long-term market rates. The Company’s income streams that are not accounted for under the lease standard include: • Parking revenue – The Company’s parking revenue, not related to leasing, is derived primarily from monthly and transient daily parking and is accounted for at the point in time when control of the goods or services transfers to the customer and our performance obligation is satisfied. • Other rental and non-rental related revenue – The Company receives other income, including, but not limited to: (a) ancillary income, such as laundry, renters insurance and cable income; and (b) miscellaneous fee income. • Fee and asset management revenue and interest income – The Company’s fee and asset management revenue and interest income are recorded on an accrual basis. • Gains or losses on sales of real estate properties – The Company accounts for the sale of real estate properties and any related gain recognition in accordance with the accounting guidance applicable to sales of real estate, which establishes standards for recognition of profit on all real estate sales transactions. The Company recognizes the sale and associated gain or loss from the disposition when control transfers to unrelated third parties, contingencies have been removed and sufficient cash consideration has been received by the Company. See Note 8 for the Company’s rental income detail allocated between the lease and revenue recognition standards. The Company’s allowance for doubtful accounts (which offsets accounts receivable and is included within other assets on the consolidated balance sheets) and bad debts (which reduce rental income on the consolidated statements of operations and comprehensive income) have historically been very modest, particularly in our residential business, given the quality of our resident base and asset class. However, due to the impact of the novel coronavirus (“COVID-19”) pandemic and extended eviction moratoriums enacted during the pandemic, the allowance for doubtful accounts and bad debts were elevated in 2021, 2022 and 2023, though gradually declined throughout 2023. In accordance with the lease standard, if we determine the lease payments are not probable of collection (based on known troubled accounts, rent deferral plans granted, historical experience and other currently available evidence), we fully reserve for any unpaid amounts, deferred rent receivable, variable lease payments and straight-line receivable balances and recognize rental income only if cash is received. If we later determine that these lease payments are probable of collection (based on sustained clean payment history, no deferral plans granted and other currently available evidence), we will no longer fully reserve for the respective current receivable balances, we will reinstate the straight-line balances for the respective leases and we will no longer recognize rental income only if cash is received. If the Company’s estimates of collectibility differ from the cash received, then the timing and amount of the Company’s reported revenue could be impacted. See Note 8 for additional details. Share-Based Compensation The Company expenses share-based compensation for employee and trustee grants of restricted shares, restricted units and share options. Any common share of beneficial interest, $ 0.01 par value per share (the “Common Shares”), issued pursuant to EQR’s incentive equity compensation and employee share purchase plans will result in ERPOP issuing units of partnership interest (“OP Units”) to EQR on a one-for-one basis, with ERPOP receiving the net cash proceeds of such issuances. See Note 12 for further discussion. Income and Other Taxes EQR has elected to be taxed as a REIT. This, along with the nature of the operations of its operating properties, resulted in no provision for federal income taxes at the EQR level. In addition, ERPOP generally is not liable for federal income taxes as the partners recognize their allocable share of income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level. Historically, the Company has generally only incurred certain state and local income, excise and franchise taxes. The Company has elected taxable REIT subsidiary status for certain of its corporate subsidiaries and, as a result, these entities will incur both federal and state income taxes on any taxable income of such entities after consideration of any net operating losses. The Company’s provision for income and other tax expense (benefit) was as follows for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, 2023 2022 2021 State and local income, franchise and excise tax (benefit) $ 1,148 $ 900 $ 915 Income and other tax expense (benefit) (1) $ 1,148 $ 900 $ 915 (1) All provisions for income tax amounts are current and none are deferred. During the years ended December 31, 2023, 2022 and 2021, the tax character of the Company’s dividends and distributions were as follows: Year Ended December 31, 2023 (1) 2022 (2) 2021 (3) Tax character of dividends and distributions: Ordinary dividends $ 1.85676 $ 1.75466 $ 1.40791 Long-term capital gain 0.57857 0.42850 0.73687 Unrecaptured section 1250 gain 0.17717 0.29434 0.26522 Dividends and distributions per Common Share/Unit outstanding $ 2.61250 $ 2.47750 $ 2.41000 (1) The Company’s fourth quarter 2023 dividends and distributions of $ 0.6625 per Common Share/Unit outstanding will be included as taxable income in calendar year 2024. (2) The Company’s fourth quarter 2022 dividends and distributions of $ 0.625 per Common Share/Unit outstanding was included as taxable income in calendar year 2023. (3) The Company’s fourth quarter 2021 dividends and distributions of $ 0.6025 per Common Share/Unit outstanding was included as taxable income in calendar year 2022. The Company issued Internal Revenue Service (“IRS”) Form 1099-DIV to shareholders to report the tax character of Company distributions consistent with these amounts. The Company provides additional information to assist shareholders in the preparation of their tax returns. For 2023, the Company reported an Alternative Minimum Tax ("AMT") preference adjustment equal to $ 0.01 per share a nd disclosed amounts defined under Treasury Regulation §1.1061-6(c) as “One Year Amounts Disclosure” and “Three Year Amounts Disclosure” equal to $ 0.04101 per share and $ 0.04071 per share, resp ectively. Principles of Consolidation The Company may hold an interest in subsidiaries, partnerships, joint ventures and other similar entities and accounts for these interests in accordance with the consolidation guidance. The Company first determines whether to consolidate the entity as a variable interest entity (“VIE”) or voting interest entity, or to account for the interest under the equity method of accounting as an unconsolidated entity. In situations in which we have concluded that an entity qualifies as a VIE, it is generally because the equity investors of VIEs do not have sufficient equity at risk to finance their activities without additional subordinated financial support or do not have substantive voting rights. The Company consolidates an entity when it is considered to be the primary beneficiary of the VIE or when it controls the entity through ownership of a majority voting interest. A primary beneficiary has the power to direct the activities that most significantly impact the VIE’s performance and has the obligation to absorb the expected losses or the right to receive the expected residual returns that could potentially be significant to the VIE. In evaluating whether the entity is a VIE and/or the Company is the primary beneficiary of the entity, the Company considers several factors, including, but not limited to, proportionate share or ownership of the VIE, funding and financing sources, the business purpose of the entity, related parties, developer and property management fees and agreement terms regarding major decisions, participating and voting rights, contributions and distributions. Investments in Unconsolidated Entities The Company accounts for investments in unconsolidated entities under the equity method of accounting and measures the investments initially at cost. The Company subsequently adjusts the carrying amount by additional cash and non-cash contributions and distributions and its proportionate share of the earnings and losses of such entities. The proportionate share of the earnings and losses are also recognized in the consolidated statements of operations and comprehensive income. In addition, we may earn fees for providing property management services or construction oversight. Noncontrolling Interests A noncontrolling interest in a subsidiary (minority interest) is an ownership interest in the consolidated entity that should be reported as equity in the consolidated financial statements and separate from the parent company’s equity. In addition, consolidated net income is required to be reported at amounts that include the amounts attributable to both the parent and the noncontrolling interest and the amount of consolidated net income attributable to the parent and the noncontrolling interest are required to be disclosed on the face of the consolidated statements of operations and comprehensive income. See Note 3 for further discussion. Operating Partnership: Net income is allocated to noncontrolling interests based on their respective ownership percentage of the Operating Partnership. The ownership percentage is calculated by dividing the number of OP Units held by the noncontrolling interests by the total OP Units held by the noncontrolling interests and EQR. Issuances and retirements of Common Shares and OP Units changes the ownership interests of both the noncontrolling interests and EQR. Such transactions and the related proceeds/payments are treated as capital transactions. Partially Owned Properties: The Company reflects noncontrolling interests in partially owned properties on the balance sheet for the portion of properties consolidated by the Company that are not wholly owned by the Company. The earnings or losses from those properties attributable to the noncontrolling interests are generally based on ownership percentage and are reflected as noncontrolling interests in partially owned properties in the consolidated statements of operations and comprehensive income. Partners’ Capital The “Limited Partners” of ERPOP include various individuals and entities that contributed their properties to ERPOP in exchange for OP Units. The “General Partner” of ERPOP is EQR. Net income is allocated to the Limited Partners based on their respective ownership percentage of ERPOP. The ownership percentage is calculated by dividing the number of OP Units held by the Limited Partners by the total OP Units held by the Limited Partners and the General Partner. Issuances and retirements of Common Shares and OP Units changes the ownership interests of both the Limited Partners and EQR. Such transactions and the related proceeds/payments are treated as capital transactions. Redeemable Noncontrolling Interests – Operating Partnership / Redeemable Limited Partners The Company classifies Redeemable Noncontrolling Interests – Operating Partnership / Redeemable Limited Partners in the mezzanine section of the consolidated balance sheets for the portion of OP Units that EQR is required, either by contract or securities law, to deliver registered Common Shares to the exchanging OP Unit holder. The redeemable noncontrolling interest units / redeemable limited partner units are adjusted to the greater of carrying value or fair market value based on the Common Share price of EQR at the end of each respective reporting period. See Note 3 for further discussion. Use of Estimates In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued an amendment to the income tax standards which requires disclosure enhancements and further transparency to certain income tax disclosures, most notably the tax rate reconciliation and income taxes paid. The new standard will be effective for annual periods beginning January 1, 2025 and will be applied on a prospective basis with the option to apply the standard retrospectively. The Company is currently evaluating the impact of adopting the standard on its consolidated results of operations and financial position. In November 2023, the FASB issued an amendment to the segment reporting standards which requires disclosure for each reportable segment, on an interim and annual basis, the significant expense categories and amounts that are regularly provided to the chief operating decision maker and included in each reported measure of a segment’s profit or loss. Additionally, it requires a disclosure of the title and position of the individual or the name of the group or committee identified as the chief operating decision maker. The new standard will be effective for annual periods beginning on January 1, 2024 and interim periods beginning on January 1, 2025 on a retrospective basis. The Company is currently evaluating the impact of adopting the standard on its consolidated results of operations and financial position. In August 2020, the FASB issued an amendment to the debt and equity financial instruments standards which simplifies the accounting for convertible instruments and accounting for contracts in an entity’s own equity. The Company adopted the standard when effective on January 1, 2022 and it had no impact on its consolidated results of operations and financial position. In March 2020, the FASB issued an amendment to the reference rate reform standard which provides the option for a limited period of time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on contract modifications and hedge accounting. The new standard was effective for the Company upon issuance and elections could be made through December 31, 2024. The Company elected to apply the hedge accounting expedients and application of these expedients preserves the presentation of derivatives consistent with past presentation. The Company continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur. Other The Company is the controlling partner in various consolidated partnerships ow ning 14 properties consisting of 3,060 ap artment units having a noncontrolling interest balance of $ 1.0 million at December 31, 2023 . The Company is required to make certain disclosures regarding noncontrolling interests in consolidated limited-life subsidiaries. Of the consolidated entities described above, the Company is the controlling partner in limited-life partnerships owning two properties having a noncontrolling interest deficit balance of $ 3.5 million. These two partnership agreements contain provisions that require the partnerships to be liquidated through the sale of their assets upon reaching a date specified in each respective partnership agreement. The Company, as controlling partner, has an obligation to cause the property owning partnerships to distribute the proceeds of liquidation to the Noncontrolling Interests in these Partially Owned Properties only to the extent that the net proceeds received by the partnerships from the sale of their assets warrant a distribution based on the partnership agreements. As of December 31, 2023, the Company estimates the value of Noncontrolling Interest distributions for these two properties would have been approximately $ 49.1 million (“Settlement Value”) had the partnerships been liquidated. This Settlement Value is based on estimated third-party consideration realized by the partnerships upon disposition of the two Partially Owned Properties and is net of all other assets and liabilities, including yield maintenance on the mortgages encumbering the properties, that would have been due on December 31, 2023 had those mortgages been prepaid. Due to, among other things, the inherent uncertainty in the sale of real estate assets, the amount of any potential distribution to the Noncontrolling Interests in the Company’s Partially Owned Properties is subject to change. To the extent that the partnerships’ underlying assets are worth less than the underlying liabilities, the Company has no obligation to remit any consideration to the Noncontrolling Interests in these Partially Owned Properties.

Equity, Capital and Other Inter

Equity, Capital and Other Interests	12 Months Ended
	Dec. 31, 2023
Equity Capital And Other Interests [Abstract]
Equity, Capital and Other Interests	3. Equity, Capital and Other Interests The Company refers to “Common Shares” and “Units” (which refer to both OP Units and restricted units) as equity securities for EQR and “General Partner Units” and “Limited Partner Units” as equity securities for ERPOP. To provide a streamlined and more readable presentation of the disclosures for the Company and the Operating Partnership, several sections below refer to the respective terminology for each with the same financial information and separate sections are provided, where needed, to further distinguish any differences in financial information and terminology. The following table presents the changes in the Company’s issued and outstanding Common Shares and Units for the years ended December 31, 2023, 2022 and 2021: 2023 2022 2021 Common Shares Common Shares outstanding at January 1, 378,429,708 375,527,195 372,302,000 Common Shares Issued: Conversion of OP Units 1,013,795 452,532 1,354,208 Issuance of Common Shares — 1,740,550 — Exercise of share options 495,690 468,021 1,710,692 Employee Share Purchase Plan (ESPP) 68,136 66,835 70,702 Restricted share grants, net 148,474 174,575 89,593 Common Shares Other: Repurchased and retired ( 864,386 ) — — Common Shares outstanding at December 31, 379,291,417 378,429,708 375,527,195 Units Units outstanding at January 1, 12,429,737 12,659,027 13,858,073 Restricted unit grants, net 165,364 223,242 155,162 Conversion of OP Units to Common Shares ( 1,013,795 ) ( 452,532 ) ( 1,354,208 ) Units outstanding at December 31, 11,581,306 12,429,737 12,659,027 Total Common Shares and Units outstanding at December 31, 390,872,723 390,859,445 388,186,222 Units Ownership Interest in Operating Partnership 3.0 % 3.2 % 3.3 % The following table presents the changes in the Operating Partnership’s issued and outstanding General Partner Units and Limited Partner Units for the years ended December 31, 2023, 2022 and 2021: 2023 2022 2021 General and Limited Partner Units General and Limited Partner Units outstanding at January 1, 390,859,445 388,186,222 386,160,073 Issued to General Partner: Issuance of OP Units — 1,740,550 — Exercise of EQR share options 495,690 468,021 1,710,692 EQR’s Employee Share Purchase Plan (ESPP) 68,136 66,835 70,702 EQR’s restricted share grants, net 148,474 174,575 89,593 Issued to Limited Partners: Restricted unit grants, net 165,364 223,242 155,162 General Partner Other: OP Units repurchased and retired ( 864,386 ) — — General and Limited Partner Units outstanding at December 31, 390,872,723 390,859,445 388,186,222 Limited Partner Units Limited Partner Units outstanding at January 1, 12,429,737 12,659,027 13,858,073 Limited Partner restricted unit grants, net 165,364 223,242 155,162 Conversion of Limited Partner OP Units to EQR Common Shares ( 1,013,795 ) ( 452,532 ) ( 1,354,208 ) Limited Partner Units outstanding at December 31, 11,581,306 12,429,737 12,659,027 Limited Partner Units Ownership Interest in Operating Partnership 3.0 % 3.2 % 3.3 % The equity positions of various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units, as well as the equity positions of the holders of restricted units, are collectively referred to as the “Noncontrolling Interests – Operating Partnership” and “Limited Partners Capital,” respectively, for the Company and the Operating Partnership. Subject to certain exceptions (including the “book-up” requirements of restricted units), the Noncontrolling Interests – Operating Partnership/Limited Partners Capital may exchange their Units with EQR for Common Shares on a one-for-one basis. The carrying value of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital (including redeemable interests) is allocated based on the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total plus the total number of Common Shares/General Partner Units. Net income is allocated to the Noncontrolling Interests – Operating Partnership/Limited Partners Capital based on the weighted average ownership percentage during the period. The Operating Partnership has the right but not the obligation to make a cash payment instead of issuing Common Shares to any and all holders of Noncontrolling Interests – Operating Partnership/Limited Partners Capital requesting an exchange of their Noncontrolling Interests – Operating Partnership/Limited Partners Capital with EQR. Once the Operating Partnership elects not to redeem the Noncontrolling Interests – Operating Partnership/Limited Partners Capital for cash, EQR is obligated to deliver Common Shares to the exchanging holder of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital. The Noncontrolling Interests – Operating Partnership/Limited Partners Capital are classified as either mezzanine equity or permanent equity. If EQR is required, either by contract or securities law, to deliver registered Common Shares, such Noncontrolling Interests – Operating Partnership/Limited Partners Capital are differentiated and referred to as “Redeemable Noncontrolling Interests – Operating Partnership” and “Redeemable Limited Partners,” respectively. Instruments that require settlement in registered shares cannot be classified in permanent equity as it is not always completely within an issuer’s control to deliver registered shares. Therefore, settlement in cash is assumed and that responsibility for settlement in cash is deemed to fall to the Operating Partnership as the primary source of cash for EQR, resulting in presentation in the mezzanine section of the balance sheet. The Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners are adjusted to the greater of carrying value or fair market value based on the Common Share price of EQR at the end of each respective reporting period. EQR has the ability to deliver unregistered Common Shares for the remaining portion of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital that are classified in permanent equity at December 31, 2023 and 2022. The carrying value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is allocated based on the number of Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total. Such percentage of the total carrying value of Units/Limited Partner Units which is ascribed to the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is then adjusted to the greater of carrying value or fair market value as described above. As of December 31, 2023 and 2022, the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners have a redemption value of approximately $ 289.2 million and $ 318.3 million, respectively, which represents the value of Common Shares that would be issued in exchange for the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners. T he following table presents the changes in the redemption value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): 2023 2022 2021 Balance at January 1, $ 318,273 $ 498,977 $ 338,951 Change in market value ( 7,667 ) ( 176,490 ) 158,598 Change in carrying value ( 21,358 ) ( 4,214 ) 1,428 Balance at December 31, $ 289,248 $ 318,273 $ 498,977 Net proceeds from EQR Common Share and Preferred Share (see definition below) offerings and proceeds from exercise of options for Common Shares are contributed by EQR to ERPOP. In return for those contributions, EQR receives a number of OP Units in ERPOP equal to the number of Common Shares it has issued in the equity offering (or in the case of a preferred equity offering, a number of preference units in ERPOP equal in number and having the same terms as the Preferred Shares issued in the equity offering). As a result, the net proceeds from Common Shares and Preferred Shares are allocated for the Company between shareholders’ equity and Noncontrolling Interests – Operating Partnership and for the Operating Partnership between General Partner’s Capital and Limited Partners Capital to account for the change in their respective percentage ownership of the underlying equity. The Company’s declaration of trust authorizes it to issue up to 100,000,000 preferred shares of beneficial interest, $ 0.01 par value per share (the “Preferred Shares”), with specific rights, preferences and other attributes as the Board of Trustees may determine, which may include preferences, powers and rights that are senior to the rights of holders of the Company’s Common Shares. The following table presents the Company’s issued and outstanding Preferred Shares/Preference Units as of December 31, 2023 and 2022: Amounts in thousands Annual Call Dividend Per December 31, December 31, Date (1) Share/Unit (2) 2023 2022 Preferred Shares/Preference Units of beneficial interest, $ 0.01 par value; 100,000,000 shares authorized: 8.29 % Series K Cumulative Redeemable Preferred Shares/Preference 50 per share/unit; 745,600 shares/units issued 12/10/2026 $ 4.145 $ 37,280 $ 37,280 $ 37,280 $ 37,280 (1) On or after the call date, redeemable Preferred Shares/Preference Units may be redeemed for cash at the option of the Company or the Operating Partnership, respectively, in whole or in part, at a redemption price equal to the liquidation price per share/unit, plus accrued and unpaid distributions, if any. (2) Dividends on Preferred Shares/Preference Units are payable quarterly. Other EQR and ERPOP currently have an active universal shelf registration statement for the issuance of equity and debt securities that automatically became effective upon filing with the SEC in May 2022 and expires in May 2025. Per the terms of ERPOP’s partnership agreement, EQR contributes the net proceeds of all equity offerings to the capital of ERPOP in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis) or preference units (on a one-for-one preferred share per preference unit basis). The Company has an At-The-Market (“ATM”) share offering program which allows EQR to issue Common Shares from time to time into the existing trading market at current market prices or through negotiated transactions, including under forward sale arrangements. The current program matures in May 2025 and gives us the authority to issue up to 13.0 million shares, all of which remain available for issuance as of December 31, 2023. Forward sale agreements under the ATM program allow the Company, at its election, to settle the agreements by issuing Common Shares in exchange for net proceeds at the then-applicable forward sale price specified by the agreement or, alternatively, to settle the agreements in whole or in part through the delivery or receipt of Common Shares or cash. Issuances of shares under these forward sale agreements are classified as equity transactions. Accordingly, no amounts relating to the forward sale agreements are recorded in the consolidated financial statements until settlement occurs. Prior to any settlements, the only impact to the consolidated financial statements is the inclusion of incremental shares, if any, within the calculation of diluted net income per share using the treasury stock method (see Note 11 for additional discussion). The actual forward price per share to be received by the Company upon settlement will be determined on the applicable settlement date based on adjustments made to the initial forward price to reflect the then-current overnight federal funds rate and the amount of dividends paid to holders of the Company’s Common Shares over the term of the forward sale agreement. During the year ended December 31, 2021 and part of the year ended December 31, 2022, the Company had forward sale agreements outstanding for approximately 1.7 million Common Shares at a weighted average initial forward price per share of $ 83.25 . During the quarter ended December 31, 2022, the Company settled all of the outstanding forward sale agreements, at a weighted average forward price per share of $ 80.22 , which is inclusive of adjustments made to reflect the then-current federal funds rate and the amount of dividends paid to holders of the Company's Common Shares, for net proceeds of approximately $ 139.6 million. Concurrent with this transaction, ERPOP issued the same amount of OP Units to EQR in exchange for the net proceeds. During the year ended December 31, 2023 , the Company repurchased and subsequently retired approximately $ 49.1 million ( 864,386 shares at a weighted average price per share of $ 56.79 ) of its Common Shares in the open market under its share repurchase program. Concurrent with these transactions, ERPOP repurchased and retired the same amount of OP Units previously issued to EQR. As of December 31, 2023 , EQR had remaining authorization to repurchase up to 12,135,614 of its shares. See Note 18 for further discussion. During the year ended December 31, 2023 , ERPOP issued $ 0.9 million of 3.00 % Series Q Cumulative Redeemable Preference Units (the "Series Q Preference Units") in connection with the buyout of the noncontrolling interest in a consolidated operating property. The 933,454 Series Q Preference Units have a liquidation value of $ 1.00 per unit and pay distributions quarterly at the annual rate of $ 0.03 per unit. The Series Q Preference Units can be redeemed for, at EQR's/ERPOP's option, Common Shares, OP Units and/or cash upon the occurrence of specific events laid out in the agreement. If redeemed for Common Shares or OP Units, the number of shares/units issued is based on the Common Share price. The Series Q Preference Units increased the balance of Noncontrolling Interests - Partially Owned Properties in the consolidated balance sheets.

Real Estate

Real Estate	12 Months Ended
	Dec. 31, 2023
Real Estate [Abstract]
Real Estate	4. Real Estate The following table summarizes the carrying amounts for the Company’s investment in real estate (at cost) as of December 31, 2023 and 2022 (amounts in thousands): 2023 2022 Land $ 5,581,876 $ 5,580,878 Depreciable property: Buildings and improvements 19,809,432 19,471,503 Furniture, fixtures and equipment 2,609,600 2,352,050 In-Place lease intangibles 519,394 510,816 Projects under development: Land 3,201 3,201 Construction-in-progress 74,835 109,739 Land held for development: Land 82,026 46,160 Construction-in-progress 32,274 14,407 Investment in real estate 28,712,638 28,088,754 Accumulated depreciation ( 9,810,337 ) ( 9,027,850 ) Investment in real estate, net $ 18,902,301 $ 19,060,904 During the year ended December 31, 2023, the Company acquired the following from unaffiliated parties (purchase price and purchase price allocation in thousands): Purchase Price Allocation (1), (2) Properties Apartment Units Purchase Price (1) Land Depreciable Property Rental Properties – Consolidated 4 1,183 $ 366,334 $ 41,142 $ 325,611 Total 4 1,183 $ 366,334 $ 41,142 $ 325,611 (1) Purchase price and purchase price allocation are both net of a mark-to-market discount of approximately $ 11.2 million on a mortgage assumed (2) Purchase price allocation includes capitalized closing costs. During the year ended December 31, 2022, the Company acquired the following from unaffiliated parties (purchase price and purchase price allocation in thousands): Purchase Price Allocation (1) Properties Apartment Units Purchase Price Land Depreciable Property Rental Properties – Consolidated 1 172 $ 113,000 $ 25,361 $ 87,685 Total 1 172 $ 113,000 $ 25,361 $ 87,685 (1) Purchase price allocation includes capitalized closing costs. During the year ended December 31, 2023, the Company disposed of the following to unaffiliated parties (sales price and net gain in thousands): Properties Apartment Units Sales Price Net Gain Rental Properties – Consolidated 11 912 $ 379,893 $ 282,539 Total 11 912 $ 379,893 $ 282,539 During the year ended December 31, 2022, the Company disposed of the following to unaffiliated parties (sales price and net gain in thousands): Properties Apartment Units Sales Price Net Gain Rental Properties – Consolidated 3 945 $ 746,150 $ 304,325 Total 3 945 $ 746,150 $ 304,325 Impairment During the year ended December 31, 2021, the Company recorded an approximate $ 16.8 million non-cash asset impairment charge on a land parcel which is included in land held for development on the consolidated balance sheets and included in the non-same store/other segment discussed in Note 17. The charge was the result of an analysis of the parcel’s estimated fair value (determined using internally developed models based on market assumptions and potential sales data from the marketing process) compared to its current capitalized carrying value after reassessment of our expected hold period for the parcel. As of December 31, 2023 and 2022 , the land parcel's carrying value was $ 15.0 million.

Commitments to Acquire_Dispose

Commitments to Acquire/Dispose of Real Estate	12 Months Ended
	Dec. 31, 2023
Commitments To Acquire Dispose Of Real Estate [Abstract]
Commitments to Acquire/Dispose of Real Estate	5. Commitments to Acquire/Dispose of Real Estate The Company has not entered into any agreements to acquire rental properties or land parcels as of the date of filing. The Company has entered into an agreement to dispose of the following (sales price and net book value in thousands): Properties Apartment Units Sales Price Net Book Value at December 31, 2023 Rental Properties – Consolidated 2 300 $ 80,000 $ 70,533 Total 2 300 $ 80,000 $ 70,533 The closing of pending transactions is subject to certain conditions and restrictions; therefore there can be no assurance that the transactions will be consummated or that the final terms will not differ in material respects from any agreements summarized above. See Note 18 for discussion of the properties acquired or disposed of, if any, subsequent to December 31, 2023 .

Investments in Partially Owned

Investments in Partially Owned Entities	12 Months Ended
	Dec. 31, 2023
Investments In Partially Owned Entities [Abstract]
Investments in Partially Owned Entities	6. Investments in Partially Owned Entities The Company has invested in various entities with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated). Consolidated VIEs In accordance with accounting standards for consolidation of VIEs, the Company consolidates ERPOP on EQR’s financial statements. As the sole general partner of ERPOP, EQR has exclusive control of ERPOP’s day-to-day management. The limited partners are not able to exercise substantive kick-out or participating rights. As a result, ERPOP qualifies as a VIE. EQR has a controlling financial interest in ERPOP and, thus, is ERPOP’s primary beneficiary. EQR has the power to direct the activities of ERPOP that most significantly impact ERPOP’s economic performance as well as the obligation to absorb losses or the right to receive benefits from ERPOP that could potentially be significant to ERPOP. The Company has various equity interests in certain joint ventures that have been deemed to be VIEs, and the Company is the VIEs’ primary beneficiary. As a result, the joint ventures are required to be consolidated on the Company’s financial statements. The following table summarizes the Company’s consolidated joint ventures as of December 31, 2023 and 2022: Operating Properties (1) Projects Under Development (2), (3) Projects Held for Development (3), (4) Properties Apartment Units Projects Apartment Units (5) Projects Apartment Units (5) 2023 Consolidated Joint Ventures (VIE) 14 3,060 — — 1 440 2022 Consolidated Joint Ventures (VIE) 15 3,114 1 312 — — (1) The land parcel under one of the properties in 2023 is subject to a long-term ground lease. (2) The land parcel under this project is subject to a long-term ground lease. (3) Represents separate consolidated joint ventures for the purpose of developing multifamily rental properties. (4) Represents separate consolidated joint ventures that have not yet started. (5) Represents the intended number of apartment units to be developed. The following table provides consolidated assets and liabilities related to the Company's VIEs as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Consolidated Assets $ 599,788 $ 691,880 Consolidated Liabilities $ 41,153 $ 158,932 During the years ended December 31, 2023 and 2022, the Company completed the following transactions: 2023 • Acquired its joint venture partner's 10 % interest in a 200 -unit apartment property for $ 4.6 million, of which the Company paid $ 3.7 million in cash and ERPOP issued $ 0.9 million of 3.00 % Series Q Preference Units (see Note 3 for additional discussion). The property is now wholly owned. In connection with the buyout, the carrying amount of the Noncontrolling Interests – Partially Owned Properties totaling $ 3.7 million was reduced to zero and the remaining $ 0.9 million was recorded to paid in capital/General Partner's Capital. The Company also repaid $ 64.7 million of mortgage debt at par prior to maturity in conjunction with the buyout; • Repaid the $ 67.9 million outstanding principal balance of the variable rate construction mortgage for one of its consolidated development joint ventures; • Sold one partially owned property consisting of 166 apartment units for approximately $ 60.1 million; and • Entered into an amended joint venture agreement for one of the unconsolidated projects held for development for the purpose of making the Company the joint venture manager and responsible for funding any further budgeted project costs up to a $ 139.0 million commitment as preferred and mezzanine contributions. The project is now consolidated. There was no funding at the closing of the amended joint venture. See the supplemental information in the consolidated statements of cash flows for disclosure of the consolidated amounts. 2022 • Acquired its joint venture partner’s 25 % interest in a 432 -unit apartment property for $ 32.2 million, and the property is now wholly owned. In connection with the buyout, the carrying amount of the Noncontrolling Interests – Partially Owned Properties totaling $ 4.8 million was reduced to zero and the remaining $ 27.4 million was recorded to paid in capital/General Partner's Capital. The following table and information summarizes the variable rate construction mortgage debt that was non-recourse to the Company at December 31, 2022 (there was no outstanding consolidated construction mortgage debt at December 31, 2023) (aggregate and amounts borrowed under loan commitments in thousands): December 31, 2022 Recently Completed Operating Property Project Under Development Number of joint ventures with debt financing 1 1 Aggregate loan commitments $ 67,589 $ 73,344 Amounts borrowed under loan commitments (1) $ 64,776 $ 44,980 (1) See Note 9 for the proceeds of secured conventional floating rate debt under Mortgage Notes Payable . Investments in Unconsolidated Entities The Company has various equity interests in certain joint ventures that are unconsolidated and accounted for using the equity method of accounting. Most of these have been deemed to be VIEs and the Company is not the VIEs' primary beneficiary. The remaining have been deemed not to be VIEs and the Company does not have a controlling voting interest. The following table and information summarizes the Company’s investments in unconsolidated entities as of December 31, 2023 and 2022 (amounts in thousands except for ownership percentage): December 31, 2023 December 31, 2022 Ownership Percentage Investments in Unconsolidated Entities: Various Real Estate Holdings (VIE) $ 35,421 $ 35,974 Varies Projects Under Development and Land Held for Development (VIE) 220,192 218,043 62 % - 95 % (1) Real Estate Technology Funds/Companies (VIE) 26,691 25,249 Varies Other ( 255 ) ( 242 ) Varies Investments in Unconsolidated Entities $ 282,049 $ 279,024 (1) In certain instances, the joint venture agreements contain provisions for promoted interests in favor of our joint venture partner. If the terms of the promoted interest are attained, then our share of the proceeds from a sale or other capital event of the unconsolidated entity may be less than the indicated ownership percentage. The following table summarizes the Company’s unconsolidated joint ventures that were deemed to be VIEs as of December 31, 2023 and 2022: Real Estate Holdings (1) Projects Under Development (2), (5) Projects Held for Development (2), (3) Entities Projects Apartment Units (4) Projects Apartment Units (4) 2023 Unconsolidated Joint Ventures (VIE) 3 6 1,982 4 1,164 2022 Unconsolidated Joint Ventures (VIE) 2 6 1,982 3 966 (1) Represents entities that hold various real estate investments. (2) Represents separate unconsolidated joint ventures for the purpose of developing multifamily rental properties. (3) Represents separate unconsolidated joint ventures that have not yet started. (4) Represents the intended number of apartment units to be developed. (5) The land parcel under one of the projects is subject to a long-term ground lease. New Development Joint Ventures The following table provides information on total unconsolidated development joint ventures entered into during the years ended December 31, 2023 and 2022 (amounts in thousands except for number of unconsolidated joint ventures and apartment units): December 31, 2023 December 31, 2022 Number of unconsolidated joint ventures (1) 2 3 Apartment units (2) 638 1,019 Investments in unconsolidated entities – acquisitions $ 2,800 $ 49,855 (1) The entities qualify as VIEs, but the Company is not the primary beneficiary because it does not have the power to direct the activities that most significantly impact the VIE’s performance. Therefore, the entities are unconsolidated and recorded using the equity method of accounting. See Note 2 for additional discussion. (2) Represents the intended number of apartment units to be developed.

Restricted Deposits

Restricted Deposits	12 Months Ended
	Dec. 31, 2023
Deposits Restricted [Abstract]
Restricted Deposits	7. Restricted Deposits The following table presents the Company’s restricted deposits as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Mortgage escrow deposits: Real estate taxes and insurance $ 307 $ — Mortgage principal reserves/sinking funds 29,270 25,304 Mortgage escrow deposits 29,577 25,304 Restricted cash: Earnest money on pending acquisitions 524 4,500 Restricted deposits on real estate investments 2,181 229 Resident security and utility deposits 40,149 38,432 Replacement reserves 15,571 12,549 Other 1,250 2,289 Restricted cash 59,675 57,999 Restricted deposits $ 89,252 $ 83,303

Leases

Leases	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Leases	8. Leases Lessor Accounting The Company is the lessor for its residential and non-residential leases and these leases are accounted for as operating leases under the lease standard. The following table presents the lease income types relating to lease payments for residential and non-residential leases along with the total other rental income for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Income Type Residential Non-Residential Total Residential Non-Residential Total Residential Non-Residential Total Residential and non-residential rent $ 2,578,565 $ 62,193 $ 2,640,758 $ 2,446,516 $ 63,995 $ 2,510,511 $ 2,202,133 $ 61,033 $ 2,263,166 Utility recoveries (RUBS income) (1) 86,628 906 87,534 81,140 844 81,984 74,846 723 75,569 Parking rent 44,081 449 44,530 43,335 435 43,770 40,934 565 41,499 Other lease revenue (2) ( 25,095 ) ( 142 ) ( 25,237 ) ( 12,637 ) ( 69 ) ( 12,706 ) ( 17,667 ) 4,027 ( 13,640 ) Total lease revenue $ 2,684,179 $ 63,406 2,747,585 $ 2,558,354 $ 65,205 2,623,559 $ 2,300,246 $ 66,348 2,366,594 Parking revenue 40,836 37,338 26,789 Other revenue 85,543 74,283 70,614 Total other rental income (3) 126,379 111,621 97,403 Rental income $ 2,873,964 $ 2,735,180 $ 2,463,997 (1) RUBS income primarily consists of variable payments representing the recovery of utility costs from residents. (2) Other lease revenue consists of the revenue adjustment related to bad debt (see below for further discussion) and other miscellaneous lease revenue. (3) Other rental income is accounted for under the revenue recognition standard and primarily consists of third-party transient parking revenue and ancillary income such as cable and laundry revenue. The following table presents residential and non-residential accounts receivable and straight-line receivable balances for the Company’s properties as of December 31, 2023 and 2022 (amounts in thousands): Residential Non-Residential Balance Sheet (Other assets): December 31, 2023 December 31, 2022 December 31, 2023 December 31, 2022 Resident/tenant accounts receivable balances $ 21,477 $ 35,688 $ 2,822 $ 2,820 Allowance for doubtful accounts ( 15,846 ) ( 31,405 ) ( 1,849 ) ( 2,152 ) Net receivable balances $ 5,631 $ 4,283 $ 973 $ 668 Straight-line receivable balances $ 9,183 $ 4,398 $ 11,915 (1) $ 13,795 (1) During the year ended December 31, 2023, the Company recorded a non-cash write-off of approximately $ 1.5 million in straight-line receivables due to the bankruptcy of Rite Aid. The following table presents residential bad debt for the Company’s properties for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, Income Statement (Rental income): 2023 2022 2021 Bad debt, net (1) $ 38,117 $ 26,570 $ 31,485 % of residential rental income 1.4 % 1.0 % 1.3 % (1) Bad debt, net benefited from additional resident payments due to governmental rental assistance programs of approximately $ 2.8 million , $ 34.7 million and $ 34.8 million for the years ended December 31, 2023, 2022 and 2021, respectively . Lessee Accounting The Company is the lessee under various corporate office and ground leases for which the Company recognizes right-of-use (“ROU”) assets and related lease liabilities. The following table presents the Company’s ROU assets and related lease liabilities as of December 31, 2023 and 2022 (amounts in thousands): 2023 2022 Right-of-use assets: Corporate office leases (operating) $ 38,745 $ 34,767 Ground leases (finance) 94,091 95,834 Ground leases (operating) 324,430 332,355 Right-of-use assets $ 457,266 $ 462,956 Lease liabilities: Corporate office leases (operating) $ 40,485 $ 35,747 Ground leases (finance) 68,143 68,919 Ground leases (operating) 203,012 204,082 Lease liabilities $ 311,640 $ 308,748 Corporate office leases The Company leases ten corporate offices with lease expiration dates ranging from 2024 through 2042 (inclusive of applicable extension options). During the year ended December 31, 2023 , the Company entered into two new corporate office leases which are being accounted for as operating leases and recorded initial lease liabilities and ROU assets of approximately $ 7.1 million. Ground leases The Company maintains consolidated long-term ground leases for 16 operating properties with lease expiration dates ranging from 2042 through 2118 (inclusive of applicable purchase options). The Company owns the building and improvements. Additional disclosures The following tables illustrate the quantitative disclosures for lessees as of and for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended Year Ended Year Ended Lease cost: Finance lease cost: Amortization of right-of-use assets (capitalized) $ 146 $ 351 $ 351 Amortization of right-of-use assets (expensed) 1,781 1,391 1,391 Interest on lease liabilities (capitalized) — — 452 Interest on lease liabilities (expensed) 1,886 1,904 1,464 Operating lease cost: Corporate office leases 4,738 4,061 3,581 Ground leases 18,338 18,338 18,338 Variable lease cost: Corporate office leases 599 430 1,037 Ground leases 4,338 4,342 2,973 Total lease cost $ 31,826 $ 30,817 $ 29,587 December 31, 2023 December 31, 2022 December 31, 2021 Other information: Cash paid for amounts included in the measurement of Investing cash flows from finance leases $ — $ — $ 383 Financing cash flows from finance leases $ 2,847 $ 2,463 $ 1,898 Operating cash flows from operating leases: Corporate office leases $ 4,576 $ 4,385 $ 5,016 Ground leases $ 15,911 $ 15,037 $ 14,682 Weighted-average remaining lease term – finance leases 23.1 years 24.1 years 25.2 years Weighted-average remaining lease term – operating leases: Corporate office leases 17.7 years 16.1 years 16.8 years Ground leases 60.7 years 61.2 years 61.8 years Weighted-average discount rate – finance leases 2.8 % 2.8 % 2.8 % Weighted-average discount rate – operating leases: Corporate office leases 4.3 % 3.2 % 3.2 % Ground leases 5.1 % 5.1 % 5.1 % The following table summarizes the Company’s undiscounted cash flows for contractual obligations for minimum rent payments/receipts under operating and financing leases for the next five years and thereafter as of December 31, 2023: (Payments)/Receipts Due by Year (in thousands) 2024 2025 2026 2027 2028 Thereafter Total Finance Leases: Minimum Rent Payments (a) $ ( 2,881 ) $ ( 2,946 ) $ ( 2,959 ) $ ( 2,971 ) $ ( 2,984 ) $ ( 82,253 ) $ ( 96,994 ) Operating Leases: Minimum Rent Payments (a) $ ( 15,797 ) $ ( 16,028 ) $ ( 15,881 ) $ ( 15,984 ) $ ( 16,132 ) $ ( 806,155 ) $ ( 885,977 ) Minimum Rent Receipts (b) $ 53,000 $ 48,410 $ 44,582 $ 40,771 $ 34,709 $ 112,720 $ 334,192 (a) Minimum basic rent due for corporate office leases and base rent due on ground leases where the Company is the lessee. (b) Minimum basic rent receipts due for various non-residential space where the Company is the lessor. Excludes residential leases due to their short-term nature. The following table provides a reconciliation of lease liabilities from our undiscounted cash flows for minimum rent payments as of December 31, 2023 (amounts in thousands): 2023 Total minimum rent payments $ 982,971 Less: Lease discount ( 671,331 ) Lease liabilities $ 311,640

Debt

Debt	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Debt	9. Debt EQR does not have any indebtedness as all debt is incurred by the Operating Partnership. Weighted average interest rates noted below for the years ended December 31, 2023 and 2022 include the effect of any derivative instruments and amortization of premiums/discounts/OCI (other comprehensive income) on debt and derivatives. Mortgage Notes Payable The following tables summarize the Company’s mortgage notes payable activity for the years ended December 31, 2023 and 2022, respectively (amounts in thousands): Mortgage notes Proceeds Assumptions Lump sum Scheduled Amortization Amortization Mortgage notes Fixed Rate Debt: Secured – Conventional $ 1,608,838 $ 550,000 (2) $ 42,256 (3) $ ( 800,000 ) (2) $ — $ 601 $ ( 3,097 ) $ 1,398,598 Floating Rate Debt: Secured – Conventional 108,378 22,896 — ( 132,598 ) ( 54 ) — 1,378 — Secured – Tax Exempt 236,222 — — — ( 3,300 ) 1,242 140 234,304 Floating Rate Debt 344,600 22,896 — ( 132,598 ) ( 3,354 ) 1,242 1,518 234,304 Total $ 1,953,438 $ 572,896 $ 42,256 $ ( 932,598 ) $ ( 3,354 ) $ 1,843 $ ( 1,579 ) $ 1,632,902 (1) Represents amortization of deferred financing costs, net of debt financing costs. (2) Obtained $ 200.0 million of 5.18 % fixed rate mortgage debt maturing in September 2033 and $ 350.0 million of 5.25 % fixed rate mortgage debt maturing in September 2033 . The secured notes totaling $ 550.0 million have an all-in effective interest rate of approximately 4.7 %. The proceeds from these loans were used, along with funding from the Company’s commercial paper note program, to repay $ 800.0 million of 4.21 % fixed rate mortgage debt that was due to mature in November 2023 . (3) Assumed $ 53.5 million of 2.24 % fixed rate mortgage debt maturing in September 2030 on one acquired property and recorded an initial discount of approximately $ 11.2 million. Mortgage notes Proceeds Lump sum Scheduled Amortization Amortization Mortgage notes Fixed Rate Debt: Secured – Conventional $ 1,896,472 $ — $ ( 286,461 ) $ ( 3,311 ) $ 941 $ 1,197 $ 1,608,838 Floating Rate Debt: Secured – Conventional 59,890 48,054 (2) — ( 81 ) — 515 108,378 Secured – Tax Exempt 234,839 — — — 1,243 140 236,222 Floating Rate Debt 294,729 48,054 — ( 81 ) 1,243 655 344,600 Total $ 2,191,201 $ 48,054 $ ( 286,461 ) $ ( 3,392 ) $ 2,184 $ 1,852 $ 1,953,438 (1) Represents amortization of deferred financing costs, net of debt financing costs. (2) See Note 6 for additional discussion of the variable rate construction mortgage debt. The following table summarizes certain interest rate and maturity date information as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Interest Rate Ranges (ending) 0.10 % - 5.25 % 0.10 % - 7.10 % Weighted Average Interest Rate 3.68 % 3.46 % Maturity Date Ranges 2029 - 2061 2023 - 2061 As of December 31, 2023 and 2022 , the Company had $ 246.7 million and $ 250.0 million, respectively, of secured tax-exempt bonds subject to third-party credit enhancement. The historical cost, net of accumulated depreciation, of encumbered properties was $ 2.1 billion and $ 2.5 billion at December 31, 2023 and 2022, respectively. Notes The following tables summarize the Company’s notes activity for the years ended December 31, 2023 and 2022, respectively (amounts in thousands): Notes, net as of Proceeds Lump sum Amortization Amortization Notes, net as of Fixed Rate Debt: Unsecured – Public $ 5,342,329 $ — $ — $ 2,248 $ 3,840 $ 5,348,417 (1) Represents amortization of deferred financing costs, net of debt financing costs. Notes, net as of Proceeds Lump sum Amortization Amortization Notes, net as of Fixed Rate Debt: Unsecured – Public $ 5,835,222 $ — $ ( 500,000 ) $ 2,820 $ 4,287 $ 5,342,329 (1) Represents amortization of deferred financing costs, net of debt financing costs. The following table summarizes certain interest rate and maturity date information as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Interest Rate Ranges (ending) 1.85 % - 7.57 % 1.85 % - 7.57 % Weighted Average Interest Rate 3.51 % 3.61 % Maturity Date Ranges 2025 - 2047 2025 - 2047 The Company’s unsecured public notes contain certain financial and operating covenants including, among other things, maintenance of certain financial ratios. The Company was in compliance with its unsecured public debt covenants for both the years ended December 31, 2023 and 2022. EQR and ERPOP currently have an active universal shelf registration statement for the issuance of equity and debt securities that automatically became effective upon filing with the SEC in May 2022 and expires in May 2025 . Line of Credit and Commercial Paper The Company has a $ 2.5 billion unsecured revolving credit facility maturing on October 26, 2027 . The Company has the ability to increase available borrowings by an additional $ 750.0 million by adding lenders to the facility, obtaining the agreement of existing lenders to increase their commitments or incurring one or more term loans. The interest rate on advances under the facility will generally be the Secured Overnight Financing Rate ("SOFR") plus a spread (currently 0.725 %), or based on bids received from the lending group, and the Company pays an annual facility fee (currently 0.125 %). Both the spread and the facility fee are dependent on the Company’s senior unsecured credit rating. The Company did no t borrow any amounts under its revolving credit facility during the years ended December 31, 2023 and 2022. The Company has an unsecured commercial paper note program under which it may borrow up to a maximum of $ 1.0 billion subject to market conditions. The notes will be sold under customary terms in the United States commercial paper note market and will rank pari passu with all of the Company’s other unsecured senior indebtedness. The following table summarizes certain weighted average interest rate, maturity and amounts outstanding information for the commercial paper program as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Weighted Average Interest Rate (1) 5.47 % 1.52 % Weighted Average Maturity (in days) 14 4 Weighted Average Amounts Outstanding $ 276.0 million $ 156.1 million (1) The notes bear interest at various floating rates. The Company limits its utilization of the revolving credit facility in order to maintain liquidity to support its $ 1.0 billion commercial paper program along with certain other obligations. The following table presents the availability on the Company’s unsecured revolving credit facility as of December 31, 2023 and 2022, respectively (amounts in thousands): December 31, 2023 December 31, 2022 Unsecured revolving credit facility commitment $ 2,500,000 $ 2,500,000 Commercial paper balance outstanding ( 410,000 ) ( 130,000 ) Unsecured revolving credit facility balance outstanding — — Other restricted amounts ( 3,415 ) ( 3,463 ) Unsecured revolving credit facility availability $ 2,086,585 $ 2,366,537 Other The following table summarizes the Company’s total debt extinguishment costs recorded as additional expense for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): December 31, 2023 December 31, 2022 December 31, 2021 Write-offs of unamortized deferred financing costs $ 1,143 $ 717 $ 744 Write-offs of unamortized (premiums)/discounts/OCI — 3,947 — Total $ 1,143 $ 4,664 $ 744 The following table provides a summary of the aggregate payments of principal on all debt for each of the next five years and thereafter as of December 31, 2023 (amounts in thousands): Year Total 2024 (1) $ 416,200 2025 458,100 2026 601,025 2027 409,800 2028 910,700 Thereafter 4,668,832 Subtotal 7,464,657 Deferred Financing Costs and Unamortized (Discount) ( 74,207 ) Total $ 7,390,450 (1) Includes $ 410.0 million in principal outstanding on the Company’s commercial paper program.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	10. Fair Value Measurements The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments. The Company, where possible, bases the fair values of its financial instruments on listed market prices and third-party quotes. Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments. In the normal course of business, the Company is exposed to the effect of interest rate changes. The Company may seek to manage these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments. The Company may also use derivatives to manage commodity prices in the daily operations of the business. A three-level valuation hierarchy exists for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three levels are defined as follows: • Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The following table summarizes the inputs to the valuations for each type of fair value measurement: Fair Value Measurement Type Valuation Inputs Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”) Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets. Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Quoted market price of Common Shares. Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable) Indicative rates provided by lenders of similar loans. Public unsecured notes Quoted market prices for each underlying issuance. Derivatives Readily observable market parameters such as forward yield curves and credit default swap data. The fair values of the Company’s financial instruments (other than mortgage notes payable, unsecured notes, commercial paper, line of credit and derivative instruments), including cash and cash equivalents and other financial instruments, approximate their carrying or contract value. The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at December 31, 2023 and 2022, respectively (amounts in thousands): December 31, 2023 December 31, 2022 Carrying Value Estimated Fair Carrying Value Estimated Fair Mortgage notes payable, net $ 1,632,902 $ 1,509,706 $ 1,953,438 $ 1,803,525 Unsecured debt, net 5,757,548 5,346,488 5,472,284 4,874,490 Total debt, net $ 7,390,450 $ 6,856,194 $ 7,425,722 $ 6,678,015 The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at December 31, 2023 and 2022, respectively (amounts in thousands): Fair Value Measurements at Reporting Date Using Description Balance Sheet 12/31/2023 Quoted Prices in Significant Other Significant Assets Supplemental Executive Retirement Plan Other Assets $ 108,478 $ 108,478 $ — $ — Liabilities Supplemental Executive Retirement Plan Other Liabilities $ 108,478 $ 108,478 $ — $ — Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Mezzanine $ 289,248 $ — $ 289,248 $ — Fair Value Measurements at Reporting Date Using Description Balance Sheet 12/31/2022 Quoted Prices in Significant Other Significant Assets Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps Other Assets $ 21,864 $ — $ 21,864 $ — Supplemental Executive Retirement Plan Other Assets 133,245 133,245 — — Total $ 155,109 $ 133,245 $ 21,864 $ — Liabilities Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps Other Liabilities $ 1,210 $ — $ 1,210 $ — Supplemental Executive Retirement Plan Other Liabilities 133,245 133,245 — — Total $ 134,455 $ 133,245 $ 1,210 $ — Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Mezzanine $ 318,273 $ — $ 318,273 $ — The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): December 31, 2023 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ 4,514 Interest expense $ ( 3,737 ) Total $ 4,514 $ ( 3,737 ) December 31, 2022 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ 20,654 Interest expense $ ( 11,071 ) Total $ 20,654 $ ( 11,071 ) December 31, 2021 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ — Interest expense $ ( 9,394 ) Total $ — $ ( 9,394 ) As of December 31, 2023 and 2022, there were approximate ly $ 5.7 million in deferred gains, net, and $ 2.5 mil lion in deferred losses, net, included in accumulated other comprehensive income (loss), respectively, related to previously settled and unsettled derivative instruments, of which an estimated $ 2.3 million may be recognized as additional interest expense during the twelve months ending December 31, 2024. During the year ended December 31, 2023 , the Company received a net $ 27.1 million to settle nine forward starting swaps in conjunction with the interest rate lock on $ 530.0 million of ten-year secured conventional mortgage notes. The Company ultimately closed on $ 550.0 million of secured notes. The accrued interest of approximately $ 1.9 million was recorded as a decrease to interest expense. The remaining $ 25.2 million was initially deferred as a component of accumulated other comprehensive income (loss) and will be recognized as a decrease to interest expense over the first nine years and eight months of the mortgage notes. Other The Company has invested in various equity securities without readily determinable fair values and has elected to measure them using the measurement alternative in accordance with the applicable accounting standards for equity securities. These investments are carried at cost less any impairment and adjusted to fair value if there are observable price changes for an identical or similar investment of the same issuer. The following table summarizes the Company’s real estate technology investment securities included in other assets as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Real Estate Technology Investments $ 19,312 $ 4,312 During the year ended December 31, 2023 , the Company sold a portion of one of these investment securities for proceeds of approximately $ 2.5 million and realized a gain on sale of approximately $ 1.6 million, which is included in interest and other income in the consolidated statements of operations. During the year ended December 31, 2023 , the Company adjusted certain of these investment securities to observable market prices and recorded an unrealized gain of approximately $ 13.5 million, which is included in interest and other income in the consolidated statements of operations. During the year ended December 31, 2021, the Company purchased and sold investment securities with readily determinable fair values and recognized a net gain on sale of $ 23.4 million, which is included in interest and other income in the consolidated statements of operations. The Company did not own any of these investment securities at December 31, 2023, 2022 and 2021.

Earnings Per Share and Earnings

Earnings Per Share and Earnings Per Unit	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share And Earnings Per Unit	11. Earnings Per Share and Earnings Per Unit Equity Residential The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts): Year Ended December 31, 2023 2022 2021 Numerator for net income per share – basic: Net income $ 868,488 $ 806,995 $ 1,396,714 Allocation to Noncontrolling Interests – Operating Partnership ( 26,710 ) ( 26,310 ) ( 45,900 ) Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Preferred distributions ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per share – basic $ 832,348 $ 773,821 $ 1,329,760 Numerator for net income per share – diluted: Net income $ 868,488 $ 806,995 $ 1,396,714 Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Preferred distributions ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per share – diluted $ 859,058 $ 800,131 $ 1,375,660 Denominator for net income per share – basic and diluted: Denominator for net income per share – basic 378,773 376,209 373,833 Effect of dilutive securities: OP Units 11,181 11,836 12,263 Long-term compensation shares/units 943 1,402 1,924 ATM forward sales — 3 69 Denominator for net income per share – diluted 390,897 389,450 388,089 Net income per share – basic $ 2.20 $ 2.06 $ 3.56 Net income per share – diluted $ 2.20 $ 2.05 $ 3.54 ERP Operating Limited Partnership The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts): Year Ended December 31, 2023 2022 2021 Numerator for net income per Unit – basic and diluted: Net income $ 868,488 $ 806,995 $ 1,396,714 Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Allocation to Preference Units ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per Unit – basic and diluted $ 859,058 $ 800,131 $ 1,375,660 Denominator for net income per Unit – basic and diluted: Denominator for net income per Unit – basic 389,954 388,045 386,096 Effect of dilutive securities: Dilution for Units issuable upon assumed exercise/vesting 943 1,402 1,924 ATM forward sales — 3 69 Denominator for net income per Unit – diluted 390,897 389,450 388,089 Net income per Unit – basic $ 2.20 $ 2.06 $ 3.56 Net income per Unit – diluted $ 2.20 $ 2.05 $ 3.54

Share Incentive Plans

Share Incentive Plans	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Share Incentive Plans	12. Share Incentive Plans Any Common Shares issued pursuant to EQR’s incentive equity compensation and employee share purchase plans will result in ERPOP issuing OP Units to EQR on a one-for-one basis with ERPOP receiving the net cash proceeds of such issuances. Overview of Share Incentive Plans The 2019 Share Incentive Plan (the “2019 Plan”), as approved by the Company’s shareholders on June 27, 2019, expires on June 27, 2029 and reserves 11,331,958 Common Shares for issuance. All future awards will be granted under the 2019 Plan. As of December 31, 2023, 8,213,508 shares were available for future issuance. Pursuant to the 2019 Plan and the 2011 Share Incentive Plan (the “2011 Plan”) (collectively the “Share Incentive Plans”), officers, trustees, key employees and consultants of the Company and its subsidiaries may be granted share options to acquire Common Shares (“Options”), including non-qualified share options (“NQSOs”), incentive share options (“ISOs”) and share appreciation rights (“SARs”), or may be granted restricted or non-restricted shares/units (including long-term incentive plan awards), subject to conditions and restrictions. Options, SARs, restricted shares and restricted units are sometimes collectively referred to herein as “Awards.” The 2011 Plan will terminate when all outstanding Awards have expired or have been exercised/vested. The Board of Trustees may at any time amend or terminate the Share Incentive Plans, but termination will not affect Awards previously granted, absent immediate vesting and cash settlement. Any Options which had vested prior to such a termination would remain exercisable by the holder. Employee Long-Term Compensation Awards The following table summarizes the terms of Awards generally granted to employees: Options Restricted Shares Restricted Units Overview Options exercised after vesting result in issuance of new Common Shares. Restricted shareholders generally have the same voting rights and receive quarterly dividend payments on their shares at the same rate and on the same date as any other Common Share holder (1). When certain conditions are met, restricted units convert into an equal number of OP Units, which the holder may exchange for Common Shares on a one-for-one basis or at the option of the Company the cash value of such shares. Restricted unitholders receive quarterly distribution payments on their restricted units at the same rate and on the same date as any other OP Unit holder (1). Grant/Exercise Granted at the fair market value of Common Shares as of the grant date using the Black-Scholes model as described below. Granted at the fair market value of Common Shares as of the grant date. Granted at varying discount rates to the fair market value of Common Shares as of the grant date (2). Vesting Period In three equal installments over a three-year period from the grant date. Three years from the grant date. Three years from the grant date. Expiration Ten years from the grant date. Not applicable. Ten years from the grant date (2). Upon Employee Unvested options are canceled. Unvested restricted shares are canceled. Unvested restricted units are canceled. (1) Dividends/distributions paid on unvested restricted shares and units are included as a component of retained earnings and Noncontrolling Interest – Operating Partnership/Limited Partners Capital, respectively, and have not been considered in reducing net income available to Common Shares/Units in a manner similar to the Company’s preferred share/preference unit dividends for the earnings per share/Unit calculation. (2) A restricted unit will automatically convert to an OP Unit when the capital account of each restricted unit increases (“books-up”) to a specified target. The probability of a book-up occurring within the ten-year contractual life along with the liquidity risk associated with various hold period restrictions are both reflected in the discount. If the capital target is not attained within ten years following the date of issuance, the restricted unit will automatically be canceled and no compensation will be payable to the holder of such canceled restricted unit. If the capital target is attained and the restricted unit is converted to an OP Unit, it will not expire. Valuation Method of Share Options The fair value of the Option grants is recognized over the requisite service/vesting period of the Options. The fair value for the Company’s Options was estimated at the time the Options were granted using the Black-Scholes option pricing model with the primary grant in each year having the following weighted average assumptions: 2023 2022 2021 Expected volatility (1) 23.8 % 21.7 % 21.3 % Expected life (2) 5 years 5 years 5 years Expected dividend yield (3) 3.30 % 3.26 % 3.23 % Risk-free interest rate (4) 4.04 % 1.66 % 0.50 % Exercise price per share (5) $ 66.59 $ 91.59 $ 67.48 Option valuation per share $ 12.67 $ 12.57 $ 7.96 (1) Expected volatility – Estimated based on the historical five-year volatility (the period matching the expected life) of EQR’s share price measured on a monthly basis. (2) Expected life – Approximates the actual weighted average life of all Options granted since the Company went public in 1993. (3) Expected dividend yield – Calculated by averaging the historical annual yield on EQR shares for a period matching the expected life of each grant, with the annual yield calculated by dividing actual regular dividends (excluding any special dividends) by the average price of EQR’s shares in a given year. (4) Risk-free interest rate – The most current U.S. Treasury rate available at the grant date for a period matching the expected life of each grant. (5) Exercise price per share – The closing share price of the Common Shares on the grant date. The valuation method and assumptions are the same as those the Company used in accounting for Option expense in its consolidated financial statements. The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. This model is only one method of valuing options. Because the Company’s Options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, the actual value of the Options to the recipient may be significantly different. Long-Term Incentive Plan The Company’s executive compensation program allows the Chief Executive Officer and certain other executive officers to earn from 0 % to 200 % of the target number of long-term incentive (“LTI”) awards, payable in the form of restricted shares and/or restricted units. Additionally, the program allowed participation of Samuel Zell, the Company's former Chairman of the Board of Trustees, prior to his death. No payout would be made for any result below 50 % of the target performance metric. The Company’s Total Shareholder Return (“TSR”), Normalized Funds from Operations (“FFO”) and Net Debt to Normalized EBITDAre (Earnings Before Interest, Taxes, Depreciation and Amortization for Real Estate) results over a forward-looking three-year performance period determine the restricted shares and/or restricted units awarded and are compared to pre-established quantitative performance metrics. The grant date fair value of the awards is estimated using a Monte Carlo model for the TSR portion of the awards, and the resulting expense is recorded over the service period regardless of whether the TSR performance measures are achieved, while the Normalized FFO and Net Debt to Normalized EBITDAre portions of the awards are adjusted based on the final achievement obtained. If the executive is retirement-eligible, the grant date fair value is amortized into expense over the first year. All other awards are amortized into expense over the three-year performance and vesting period. If employment is terminated prior to vesting, the restricted shares and restricted units are generally canceled, subject to the retirement benefit provisions discussed below as well as the death and disability provisions of the plan. The LTI participants receive distributions only on restricted units awarded equal to 10 % of the quarterly distributions paid on OP Units during the performance period. At the end of the performance period, LTI participants receive dividends/distributions actually earned on restricted shares or restricted units awarded during the performance period, less any distributions already paid on the restricted units. The grant date fair value of the TSR portion of the LTI awards is estimated using a multifactor Monte Carlo model to determine share prices for a set of relative awards for which the payout of the award depends on the spread of EQR’s TSR to the TSR of two indices: (a) the FTSE Nareit Apartment Index; and (b) the FTSE Nareit Equity Index. The absolute Company TSR metric previously included in the TSR portion of the LTI awards for which the payout of the award only depended on EQR’s TSR was replaced with a Net Debt to Normalized EBITDAre metric for the 2022 LTI plan and onward, covering a forward-looking three-year performance period. The grant date fair value of the Normalized FFO and Net Debt to Normalized EBITDAre portions of the LTI awards are estimated using the closing price of EQR Common Shares on the grant date for the restricted shares and a discounted closing price of EQR Common Shares on the grant date for the restricted units to reflect the “book-up” and liquidity risk inherent in the units. The individual prices determined above are then weighted to arrive at the final values for each restricted share/unit as follows: 2023 2022 2021 Weighted average fair value per restricted share $ 61.18 $ 96.84 $ 61.73 Weighted average fair value per restricted unit $ 58.78 $ 93.32 $ 59.82 The valuation method and assumptions are the same as those the Company used in accounting for the LTI award expense in its consolidated financial statements. The Monte Carlo valuation model is only one method of valuing awards. Because the Company’s restricted shares/units have characteristics significantly different from those of traded shares/units, and because changes in the subjective input assumptions can materially affect the fair value estimate, the actual value of the restricted shares/units to the recipient may be significantly different. Trustees All non-employee Trustees, including the Company’s current Chairman, are granted Options, restricted shares and/or restricted units that vest one year from the grant date that corresponds to the term for which he or she has been elected to serve. The Company's former Chairman of the Board of Trustees, Samuel Zell, did not receive these awards. Since 2016, he only received awards under the LTI plan (see further discussion above). Retirement Benefits The Company’s Share Incentive Plans provide for certain benefits upon retirement. The following table summarizes the terms of each retirement eligibility category. Age 62 for Employees Rule of 70 for Employees Age 72 for Trustees Eligibility For employees hired prior to January 1, 2009 and who were age 59 or older as of February 1, 2019. All employees (1). All non-employee Trustees. Effect on unvested restricted shares, restricted units and Options Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Awards continue to vest per the original vesting schedule, subject to certain conditions, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Effect on LTI Plan Awards are prorated in proportion to the number of days worked in the first year of the three-year performance period and the individual does not receive any payout of shares or units until the final payout is determined at the end of the three-year performance period. (1) The Rule of 70 is met when an employee’s years of service with the Company (which must be at least 15 years) plus his or her age (which must be at least 55 years) on the date of termination equals or exceeds 70 years. In addition, the employee must give the Company at least six months’ advance written notice of his or her intention to retire along with agreeing to certain other conditions. Under the Company’s definitions of retirement, some of its executive officers, including its Chief Executive Officer, are retirement eligible. Compensation Expense and Award Activity The following tables summarize compensation information regarding the restricted shares, restricted units, Options and Employee Share Purchase Plan (“ESPP”) for the three years ended December 31, 2023, 2022 and 2021. Year Ended December 31, 2023 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 11,006 $ 1,480 $ — $ 12,486 $ 889 Restricted units 15,809 96 525 16,430 904 Options 4,436 192 — 4,628 — ESPP discount 564 80 — 644 — Total $ 31,815 $ 1,848 $ 525 $ 34,188 $ 1,793 Year Ended December 31, 2022 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 10,419 $ 1,176 $ — $ 11,595 $ 1,120 Restricted units 16,487 87 2,530 19,104 1,039 Options 1,889 169 263 2,321 — ESPP discount 718 78 — 796 — Total $ 29,513 $ 1,510 $ 2,793 $ 33,816 $ 2,159 Year Ended December 31, 2021 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 7,258 $ 1,131 $ — $ 8,389 $ 761 Restricted units 16,689 70 1,038 17,797 1,254 Options 2,980 121 — 3,101 — ESPP discount 883 108 — 991 — Total $ 27,810 $ 1,430 $ 1,038 $ 30,278 $ 2,015 (1) The Company allows eligible officers the ability to receive immediately vested restricted units (subject to the book-up provisions described above and a two-year hold restriction) or immediately vested Options in-lieu of any percentage of their annual cash bonus. Compensation expense is generally recognized for Awards as follows: • Restricted shares, restricted units and Options – Straight-line method over the vesting period of the Options, shares or units regardless of cliff or ratable vesting distinctions. • LTI plan awards – Target amount is recognized under the straight-line method over the vesting period of the shares or units. • ESPP discount – Immediately upon the purchase of Common Shares each quarter. The Company accelerates the recognition of compensation expense for all Awards for those individuals approaching or meeting the retirement age criteria discussed above. The total compensation expense related to Awards not yet vested at December 31, 2023 is $ 10.7 million (including the accelerated expenses for individuals approaching or meeting the retirement age criteria discussed above), which is expected to be recognized over a weighted average term of 1.34 yea rs. The table below summarizes the Award activity of the Share Incentive Plans for the three years ended December 31, 2023, 2022 and 2021: Common Weighted Restricted Weighted Restricted Weighted Balance at December 31, 2020 5,642,752 $ 56.91 353,634 $ 71.81 879,800 $ 66.78 Awards granted 489,853 $ 67.58 96,224 $ 70.46 190,742 $ 60.71 Awards exercised/vested ( 1,710,692 ) $ 50.09 ( 133,351 ) $ 62.89 ( 181,531 ) $ 62.01 Awards forfeited ( 23,317 ) $ 73.33 ( 6,631 ) $ 74.31 ( 35,580 ) $ 59.82 Awards expired ( 10,763 ) $ 68.00 — $ — — $ — Balance at December 31, 2021 4,387,833 $ 60.65 309,876 $ 75.17 853,431 $ 66.11 Awards granted 164,199 $ 88.22 182,801 $ 80.52 223,242 $ 86.47 Awards exercised/vested ( 468,021 ) $ 52.87 ( 194,533 ) $ 70.91 ( 122,999 ) $ 66.10 Awards forfeited ( 12,968 ) $ 77.29 ( 8,226 ) $ 82.02 — $ — Awards expired ( 9,683 ) $ 60.02 — $ — — $ — Balance at December 31, 2022 4,061,360 $ 62.60 289,918 $ 81.21 953,674 $ 73.57 Awards granted 395,280 $ 66.56 152,217 $ 66.93 236,031 $ 60.38 Awards exercised/vested ( 495,690 ) $ 48.52 ( 118,322 ) $ 80.76 ( 75,105 ) $ 76.38 Awards forfeited ( 1,717 ) $ 66.73 ( 3,743 ) $ 76.43 ( 70,667 ) $ 59.14 Awards expired ( 981 ) $ 67.50 — $ — — $ — Balance at December 31, 2023 3,958,252 $ 64.76 320,070 $ 74.64 1,043,933 $ 68.56 Amounts in thousands except per share amounts Year Ended December 31, 2023 2022 2021 Weighted average grant date fair value per share for Options granted $ 12.61 $ 12.45 $ 7.98 Aggregate intrinsic value of Options exercised (1) $ 6,023 $ 14,511 $ 47,413 Fair value of restricted shares vested $ 7,783 $ 17,353 $ 9,222 Fair value of restricted units vested $ 4,965 $ 10,662 $ 12,468 (1) These values were calculated as the difference between the strike price of the underlying awards and the per share price at which each respective award was exercised. T he following table summarizes information regarding Options outstanding and exercisable at December 31, 2023 (aggregate intrinsic value is in thousands): Options Weighted Weighted Aggregate Options Outstanding 3,958,252 4.81 $ 64.76 $ 2,889 Options Exercisable 3,342,785 4.12 $ 63.83 $ 2,889 Vested and expected to vest 611,238 8.54 $ 69.80 $ — (1) The aggregate intrinsic values were calculated as the excess, if any, between the Company’s closing share price of $ 61.16 per share on December 31, 2023 and the strike price of the underlying awards. As of December 31, 2022 and 2021 , 3,549,325 Options (with a weighted average exercise price of $ 60.80 ) and 3,710,888 Options (with a weighted average exercise price of $ 58.70 ) were exercisable, respectively.

Employee Plans

Employee Plans	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement, Additional Disclosure [Abstract]
Employee Plans	13. Employee Plans The Company established an Employee Share Purchase Plan to provide each employee and trustee the ability to annually acquire up to $ 100,000 of Common Shares of EQR. The Company registered 7,000,000 Common Shares under the ESPP, of which 2,418,463 Common Shares remained available for purchase at December 31, 2023 . The Common Shares may be purchased quarterly at a price equal to 85 % of the lesser of: (a) the closing price for a share on the last day of such quarter; and (b) the greater of: (i) the closing price for a share on the first day of such quarter, and (ii) the average closing price for a share for all the business days in the quarter. The following table summarizes information regarding the Common Shares issued under the ESPP with the net proceeds noted below being contributed to ERPOP in exchange for OP Units (amounts in thousands except share and per share amounts): Year Ended December 31, 2023 2022 2021 Shares issued 68,136 66,835 70,702 Issuance price ranges $ 47.97 – $ 55.11 $ 52.33 – $ 72.51 $ 53.13 – $ 71.04 Issuance proceeds $ 3,517 $ 4,178 $ 4,265 The Company established a defined contribution plan (the “401(k) Plan”) to provide retirement benefits for employees that meet minimum employment criteria. The Company matches dollar for dollar up to the first 4 % of eligible compensation that a participant contributes to the 401(k) Plan for all employees except those defined as highly compensated employees, whose match is 3 %. Participants are vested in the Company’s contributions over five years . The Company recognized an expense in the amount of $ 5.2 million, $ 4.8 million and $ 4.9 million for the years ended December 31, 2023, 2022 and 2021, respectively. The Company established the SERP to provide certain officers and trustees an opportunity to defer a portion of their eligible compensation in order to save for retirement. The SERP is restricted to investments in Common Shares, certain marketable securities that have been specifically approved and cash equivalents. The deferred compensation liability represented in the SERP and the securities issued to fund such deferred compensation liability are consolidated by the Company and carried on the Company’s balance sheets, and the Company’s Common Shares held in the SERP are accounted for as a reduction to paid in capital (included in general partner’s capital in the Operating Partnership’s financial statements).

Distribution Reinvestment Plan

Distribution Reinvestment Plan	12 Months Ended
	Dec. 31, 2023
Distribution Reinvestment And Share Purchase Plan [Abstract]
Distribution Reinvestment Plan	14. Distribution Reinvestment Plan On September 30, 2014, the Company filed with the SEC a Form S-3 Registration Statement to register 4,790,000 Common Shares pursuant to a Distribution Reinvestment Plan (the “2014 DRIP”), which included the remaining shares available for issuance under a previous registration. The registration was automatically declared effective the same day and will expire when all 4,790,000 shares have been issued. The Company ha s 4,619,250 Common Shares available for issuance under the 2014 DRIP at December 31, 2023. The 2014 DRIP provides holders of record and beneficial owners of Common Shares and Preferred Shares with a simple and convenient method of reinvesting cash dividends/distributions in additional Common Shares. Common Shares purchased under the 2014 DRIP may, at the option of EQR, be directly issued by EQR or purchased by EQR’s transfer agent in the open market using participants’ funds. The net proceeds from any Common Share issuances are contributed to ERPOP in exchange for OP Units.

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Transactions with Related Parties	15. Transactions with Related Parties The Company leases its corporate headquarters from an entity affiliated with Samuel Zell, who was EQR's Chairman of the Board of Trustees until his death in May 2023. This lease is no longer a related party lease as of December 31, 2023. The lease term expires on November 30, 2032 and contains two five-year extension options. The amount incurred for such office space for the years ended December 31, 2023, 2022 and 2021 were approximately $ 1.9 million , $ 1.7 million and $ 1.7 million, respectively. The Company believes these amounts approximate market rates for such rental space.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	16. Commitments and Contingencies Commitments Real Estate Development Commitments As of December 31, 2023 , the Company has both consolidated and unconsolidated real estate projects under development. The following table summarizes the gross remaining total project costs for the Company’s projects under development at December 31, 2023 (total project costs remaining in thousands): Projects Apartment Units Total Project Costs Remaining (1) Projects Under Development Consolidated 1 225 $ 74,585 Unconsolidated 6 1,982 144,928 Total Projects Under Development 7 2,207 $ 219,513 (1) The Company's share of the $ 219.5 million in total project costs remaining approximates $ 76.6 million, with the balance funded by the Company's joint venture partners (approximately $ 0.7 million) and/or applicable construction loans (approximately $ 142.2 million). We have entered into, and may continue in the future to enter into, joint venture agreements with third-party partners for the development of multifamily rental properties. The joint venture agreements with each development partner include buy-sell provisions that provide the right, but not the obligation, for the Company to acquire each respective partner’s interests or sell its interests at any time following the occurrence of certain pre-defined events described in the joint venture agreements. See Note 6 for additional discussion. Other Commitments We have entered into, and may continue in the future to enter into, real estate technology and other real estate fund investments. As of December 31, 2023, the Company has invested in ten separate such investments totaling $ 38.8 million with aggregate remaining commitments of approximatel y $ 19.2 million. Employment Agreements The Company entered into a retirement benefits agreement with its former Chairman and a deferred compensation agreement with one former executive officer. During the years ended December 31, 2023, 2022 and 2021 , the Company recognized compensation expense of $ 0.6 million, $( 0.2 ) million and $ 0.1 million, respectively, related to these agreements. The following table summarizes the Company’s contractual obligations for deferred compensation for the next five years and thereafter as of December 31, 2023: (Payments) Due by Year (in thousands) 2024 2025 2026 2027 2028 Thereafter Total Other Long-Term Liabilities: Deferred Compensation (1) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 3,778 ) $ ( 7,978 ) (1) Includes payments due to the estate of the Company’s former Chairman. As of December 31, 2023, no payments remain due to the Company's former executive officer. Contingencies Litigation and Legal Matters The Company, as an owner of real estate, is subject to various federal, state and local laws. Compliance by the Company with existing laws has not had a material adverse effect on the Company. However, the Company cannot predict the impact of new or changed laws or regulations on its current properties or on properties that it may acquire in the future. The Company has been named as a defendant in a number of cases filed in late 2022 and 2023 alleging antitrust violations by RealPage, Inc., a seller of revenue management software products, and various owners and/or operators of multifamily housing, including us, that have utilized these products. The complaints allege collusion among the defendants to illegally fix and inflate the pricing of multifamily rents and seek monetary damages, injunctive relief, fees and costs. All of the cases except for one have been consolidated into a single putative class action in the United States District Court for the Middle District of Tennessee. On December 28, 2023, motions to dismiss this consolidated action, filed by RealPage, Inc. as well as us and our multifamily co-defendants, were denied by the Court and the case is proceeding. Another case with similar allegations has been filed by the District of Columbia against RealPage, Inc. and a number of multifamily owners and/or operators, including us. We believe these various lawsuits are without merit and we intend to vigorously defend against them. As these proceedings are in the early stages, it is not possible for the Company to predict the outcome nor is it possible to estimate the amount of loss, if any, which may be associated with an adverse decision in any of these cases. The Company does not believe there is any litigation pending or threatened against it that, individually or in the aggregate, may reasonably be expected to have a material adverse effect on the Company.

Reportable Segments

Reportable Segments	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Reportable Segments	17. Reportable Segments Operating segments are defined as components of an enterprise that engage in business activities from which they may earn revenues and incur expenses and about which discrete financial information is available that is evaluated regularly by the chief operating decision maker. The chief operating decision maker decides how resources are allocated and assesses performance on a recurring basis at least quarterly. The Company’s primary business is the acquisition, development and management of multifamily residential properties, which includes the generation of rental and other related income through the leasing of apartment units to residents. The chief operating decision maker evaluates the Company’s operating performance geographically by market and both on a same store and non-same store basis. While the Company does maintain a non-residential presence, it accounts for less than 4.0 % of total revenues for the year ended December 31, 2023 and is designed as an amenity for our residential residents. The chief operating decision maker evaluates the performance of each property on a consolidated residential and non-residential basis. The Company’s geographic consolidated same store operating segments represent its reportable segments. The Company’s development activities are other business activities that do not constitute an operating segment and as such, have been aggregated in the “Other” category in the tables presented below. All revenues are from external customers and there is no customer who contributed 10% or more of the Company’s total revenues during the years ended December 31, 2023, 2022 and 2021, respectively. The primary financial measure for the Company’s rental real estate segment is net operating income (“NOI”), which represents rental income less: 1) property and maintenance expense and 2) real estate taxes and insurance expense (all as reflected in the accompanying consolidated statements of operations and comprehensive income). The Company believes that NOI is helpful to investors as a supplemental measure of its operating performance because it is a direct measure of the actual operating results of the Company’s apartment properties. Revenues for all leases are reflected on a straight-line basis in accordance with GAAP for the current and comparable periods. The following table presents a reconciliation of NOI from our rental real estate for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): Year Ended December 31, 2023 2022 2021 Rental income $ 2,873,964 $ 2,735,180 $ 2,463,997 Property and maintenance expense ( 514,575 ) ( 483,865 ) ( 453,532 ) Real estate taxes and insurance expense ( 412,114 ) ( 388,412 ) ( 397,105 ) Total operating expenses ( 926,689 ) ( 872,277 ) ( 850,637 ) Net operating income $ 1,947,275 $ 1,862,903 $ 1,613,360 The following tables present NOI from our rental real estate for each segment for the years ended December 31, 2023, 2022 and 2021, respectively, as well as total assets and capital expenditures at December 31, 2023 and 2022, respectively (amounts in thousands): Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Rental Operating NOI Rental Operating NOI Rental Operating NOI Same store (1) Los Angeles $ 466,980 $ 143,983 $ 322,997 $ 450,635 $ 132,858 $ 317,777 $ 431,954 $ 132,274 $ 299,680 Orange County 130,343 28,699 101,644 122,660 26,511 96,149 109,427 24,986 84,441 San Diego 92,691 20,602 72,089 86,728 19,506 67,222 78,709 18,395 60,314 Subtotal - Southern California 690,014 193,284 496,730 660,023 178,875 481,148 620,090 175,655 444,435 Washington, D.C. 441,676 140,696 300,980 417,210 138,570 278,640 389,205 129,065 260,140 San Francisco 430,390 129,480 300,910 415,173 124,192 290,981 383,817 118,795 265,022 New York 476,319 193,311 283,008 434,820 187,218 247,602 367,370 182,631 184,739 Seattle 290,894 81,787 209,107 281,959 79,037 202,922 256,988 80,775 176,213 Boston 289,423 85,579 203,844 270,899 82,523 188,376 235,050 76,374 158,676 Denver 71,067 21,328 49,739 67,785 19,569 48,216 39,084 11,209 27,875 Other Expansion Markets 64,928 27,983 36,945 61,897 27,618 34,279 — — — Total same store 2,754,711 873,448 1,881,263 2,609,766 837,602 1,772,164 2,291,604 774,504 1,517,100 Non-same store/other Non-same store (2) 100,970 36,836 64,134 74,379 29,758 44,621 59,629 27,691 31,938 Other (3) 18,283 16,405 1,878 51,035 4,917 46,118 112,764 48,442 64,322 Total non-same store/other 119,253 53,241 66,012 125,414 34,675 90,739 172,393 76,133 96,260 Totals $ 2,873,964 $ 926,689 $ 1,947,275 $ 2,735,180 $ 872,277 $ 1,862,903 $ 2,463,997 $ 850,637 $ 1,613,360 (1) For the years ended December 31, 2023 and 2022 , same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2022, less properties subsequently sold, which represented 76,297 apartment units. For the year ended December 31, 2021, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2021, less properties subsequently sold, which represented 72,872 apartment units. (2) For the years ended December 31, 2023 and 2022, non-same store primarily includes properties acquired after January 1, 2022, plus any properties in lease-up and not stabilized as of January 1, 2022, and any properties undergoing major renovations. For the year ended December 31, 2021, non-same store primarily includes properties acquired after January 1, 2021, plus any properties in lease-up and not stabilized as of January 1, 2021, and any properties undergoing major renovations. (3) Other includes development, other corporate operations and operations prior to disposition for properties sold. Year Ended December 31, 2023 Year Ended December 31, 2022 Total Assets Capital Expenditures Total Assets Capital Expenditures Same store (1) Los Angeles $ 2,489,180 $ 54,688 $ 2,549,606 $ 35,057 Orange County 343,219 9,888 356,396 7,885 San Diego 231,549 17,137 228,471 8,798 Subtotal - Southern California 3,063,948 81,713 3,134,473 51,740 Washington, D.C. 2,995,509 50,504 3,091,996 34,640 San Francisco 2,972,476 53,963 3,049,771 33,497 New York 3,326,831 21,908 3,421,373 21,636 Seattle 2,075,966 34,011 2,141,346 27,935 Boston 1,748,887 30,852 1,807,629 23,951 Denver 824,264 4,220 857,021 8,561 Other Expansion Markets 782,977 5,674 811,130 2,175 Total same store 17,790,858 282,845 18,314,739 204,135 Non-same store/other Non-same store (2) 1,493,139 35,615 1,134,000 15,277 Other (3) 750,567 882 769,523 1,674 Total non-same store/other 2,243,706 36,497 1,903,523 16,951 Totals $ 20,034,564 $ 319,342 $ 20,218,262 $ 221,086 (1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2022, less properties subsequently sold, which represented 76,297 apartment units. (2) Non-same store primarily includes properties acquired after January 1, 2022, plus any properties in lease-up and not stabilized as of January 1, 2022, and any properties undergoing major renovations. (3) Other includes development, other corporate operations and capital expenditures for properties sold.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2023
Subsequent Events [Abstract]
Subsequent Events	18. Subsequent Events Subsequent to December 31, 2023, the Company: • Disposed of the following to unaffiliated parties (sales price in thousands): Properties Apartment Units Sales Price Rental Properties – Consolidated 3 504 $ 248,500 Total 3 504 $ 248,500 • Following the Company's share repurchase activity in 2023, its Board of Trustees approved replenishing the Company's share repurchase program authorization back to its original 13.0 million shares .

Schedule III - Real Estate and

Schedule III - Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2023
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III-Real Estate and Accumulated Depreciation	EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate a nd Accumulated Depreciation Overall Summary December 31, 2023 Properties Apartment Investment Accumulated Investment Encumbrances (1) Wholly Owned Unencumbered 255 68,916 $ 24,800,990,957 $ ( 8,491,300,503 ) $ 16,309,690,454 $ — Wholly Owned Encumbered 33 8,215 3,097,180,778 ( 1,052,189,478 ) 2,044,991,300 1,604,630,478 Wholly Owned Properties 288 77,131 27,898,171,735 ( 9,543,489,981 ) 18,354,681,754 1,604,630,478 Partially Owned Unencumbered 13 2,792 779,454,558 ( 244,736,257 ) 534,718,301 — Partially Owned Encumbered 1 268 35,011,634 ( 22,111,181 ) 12,900,453 28,271,943 Partially Owned Properties 14 3,060 814,466,192 ( 266,847,438 ) 547,618,754 28,271,943 Total Unencumbered Properties 268 71,708 25,580,445,515 ( 8,736,036,760 ) 16,844,408,755 — Total Encumbered Properties 34 8,483 3,132,192,412 ( 1,074,300,659 ) 2,057,891,753 1,632,902,421 Total Consolidated Investment in Real Estate 302 80,191 $ 28,712,637,927 $ ( 9,810,337,419 ) $ 18,902,300,508 $ 1,632,902,421 (1) See attached Encumbrances Reconciliation. EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation Encumbrances Reconciliation December 31, 2023 Portfolio/Entity Encumbrances Number of See Properties Amount Archstone Master Property Holdings LLC 8 H $ 546,784,016 Portfolio/Entity Encumbrances 8 546,784,016 Individual Property Encumbrances 1,086,118,405 Total Encumbrances per Financial Statements $ 1,632,902,421 EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III – Real Estate and Accumulated Depreciation (Amounts in thousands) The changes in total real estate for the years ended December 31, 2023, 2022 and 2021 are as follows: 2023 2022 2021 Balance, beginning of year $ 28,088,754 $ 28,272,906 $ 27,203,325 Acquisitions and development 500,221 214,903 1,912,579 Improvements 321,082 225,136 152,715 Dispositions and other ( 197,419 ) ( 624,191 ) ( 995,713 ) Balance, end of year $ 28,712,638 $ 28,088,754 $ 28,272,906 The changes in accumulated depreciation for the years ended December 31, 2023, 2022 and 2021 are as follows: 2023 2022 2021 Balance, beginning of year $ 9,027,850 $ 8,354,282 $ 7,859,657 Depreciation 888,709 882,168 838,272 Dispositions and other ( 106,222 ) ( 208,600 ) ( 343,647 ) Balance, end of year $ 9,810,337 $ 9,027,850 $ 8,354,282 EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation December 31, 2023 Description Initial Cost to Cost Gross Amount Carried at Apartment Name Location Non-Residential Date of Apartment Land Building & Building & Land Building & Total (B) Accumulated Investment Encumbrances Wholly Owned Unencumbered: 100 K Apartments (fka 100K Street) Washington, D.C. — 2018 222 $ 15,600,000 $ 70,296,069 $ 300,905 $ 15,600,000 $ 70,596,974 $ 86,196,974 $ ( 14,897,778 ) $ 71,299,196 $ — 170 Amsterdam New York, NY G 2015 236 — 112,096,955 1,076,420 — 113,173,375 113,173,375 ( 38,535,035 ) 74,638,340 — 175 Kent Brooklyn, NY G 2011 113 22,037,831 53,962,169 2,841,342 22,037,831 56,803,511 78,841,342 ( 26,115,759 ) 52,725,583 — 180 Montague (fka Brooklyn Heights) Brooklyn, NY G 2000 193 32,400,000 92,675,228 6,202,414 32,400,000 98,877,642 131,277,642 ( 41,299,986 ) 89,977,656 — 180 Riverside Boulevard New York, NY G 1998 516 144,968,250 138,346,681 23,000,194 144,968,250 161,346,875 306,315,125 ( 102,045,821 ) 204,269,304 — 1210 Mass Washington, D.C. G 2004 144 9,213,512 36,559,189 6,031,243 9,213,512 42,590,432 51,803,944 ( 26,263,816 ) 25,540,128 — 1401 Joyce on Pentagon Row Arlington, VA — 2004 326 9,780,000 89,668,165 9,670,778 9,780,000 99,338,943 109,118,943 ( 51,888,815 ) 57,230,128 — 1500 Mass Ave Washington, D.C. G 1951 556 54,638,298 40,361,702 18,275,942 54,638,298 58,637,644 113,275,942 ( 37,775,345 ) 75,500,597 — 1800 Oak (fka Rosslyn) Arlington, VA G 2003 314 31,400,000 109,005,734 13,922,635 31,400,000 122,928,369 154,328,369 ( 52,103,605 ) 102,224,764 — 2201 Pershing Drive Arlington, VA G 2012 188 11,321,198 49,674,175 3,542,317 11,321,198 53,216,492 64,537,690 ( 23,077,524 ) 41,460,166 — 2201 Wilson Arlington, VA G 2000 219 21,900,000 78,724,663 9,735,230 21,900,000 88,459,893 110,359,893 ( 36,122,649 ) 74,237,244 — 2400 M St Washington, D.C. G 2006 359 30,006,593 114,013,785 6,040,872 30,006,593 120,054,657 150,061,250 ( 73,845,252 ) 76,215,998 — 2501 Porter Washington, D.C. — 1988 202 13,000,000 75,271,179 8,579,027 13,000,000 83,850,206 96,850,206 ( 37,053,984 ) 59,796,222 — 315 on A Boston, MA G 2013 202 14,450,070 115,824,930 2,728,746 14,450,070 118,553,676 133,003,746 ( 39,985,661 ) 93,018,085 — 340 Fremont (fka Rincon Hill) San Francisco, CA — 2016 348 42,000,000 248,607,902 1,455,245 42,000,000 250,063,147 292,063,147 ( 72,136,881 ) 219,926,266 — 341 Nevins Brooklyn, NY — (F) — 3,621,717 308,661 — 3,621,717 308,661 3,930,378 — 3,930,378 — 3003 Van Ness (fka Van Ness) Washington, D.C. — 1970 625 56,300,000 141,191,580 13,398,348 56,300,000 154,589,928 210,889,928 ( 65,522,660 ) 145,367,268 — 425 Broadway Santa Monica, CA G 2001 101 12,600,000 34,394,772 4,177,489 12,600,000 38,572,261 51,172,261 ( 16,909,293 ) 34,262,968 — 425 Mass Washington, D.C. G 2009 559 28,150,000 138,600,000 11,286,087 28,150,000 149,886,087 178,036,087 ( 73,476,449 ) 104,559,638 — 455 Eye Street Washington, D.C. G 2017 174 11,941,407 61,418,689 474,032 11,941,407 61,892,721 73,834,128 ( 15,925,044 ) 57,909,084 — 4th and Hill Los Angeles, CA — (F) — 13,131,456 1,868,544 — 13,131,456 1,868,544 15,000,000 — 15,000,000 — 55 West Fifth I & II (fka Townhouse Plaza and Gardens) San Mateo, CA — 1964/1972 241 21,041,710 71,931,323 18,881,207 21,041,710 90,812,530 111,854,240 ( 43,587,776 ) 68,266,464 — 600 Washington New York, NY G 2004 135 32,852,000 43,140,551 4,880,600 32,852,000 48,021,151 80,873,151 ( 29,111,793 ) 51,761,358 — 660 Washington (fka Boston Common) Boston, MA G 2006 420 106,100,000 166,311,679 19,921,287 106,100,000 186,232,966 292,332,966 ( 73,269,964 ) 219,063,002 — 70 Greene Jersey City, NJ G 2010 480 28,108,899 236,763,553 7,822,777 28,108,899 244,586,330 272,695,229 ( 115,268,366 ) 157,426,863 — 71 Broadway New York, NY G 1997 238 22,611,600 77,492,171 22,156,834 22,611,600 99,649,005 122,260,605 ( 68,010,311 ) 54,250,294 — 77 Bluxome San Francisco, CA — 2007 102 5,249,124 18,609,876 808,565 5,249,124 19,418,441 24,667,565 ( 8,843,983 ) 15,823,582 — 77 Park Avenue (fka Hoboken) Hoboken, NJ G 2000 301 27,900,000 168,992,440 11,758,976 27,900,000 180,751,416 208,651,416 ( 74,020,489 ) 134,630,927 — 777 Sixth New York, NY G 2002 294 65,352,706 65,747,294 8,483,965 65,352,706 74,231,259 139,583,965 ( 40,561,987 ) 99,021,978 — 88 Hillside Daly City, CA G 2011 95 7,786,800 31,587,325 4,738,464 7,786,800 36,325,789 44,112,589 ( 16,832,809 ) 27,279,780 — 855 Brannan San Francisco, CA G 2018 449 41,363,921 282,730,067 1,666,205 41,363,921 284,396,272 325,760,193 ( 68,753,861 ) 257,006,332 — 929 Mass (fka 929 House) Cambridge, MA G 1975 127 3,252,993 21,745,595 9,890,575 3,252,993 31,636,170 34,889,163 ( 24,748,862 ) 10,140,301 — Academy Village North Hollywood, CA — 1989 248 25,000,000 23,593,194 14,095,146 25,000,000 37,688,340 62,688,340 ( 25,487,214 ) 37,201,126 — Acappella Pasadena, CA — 2002 143 5,839,548 29,360,452 2,853,851 5,839,548 32,214,303 38,053,851 ( 16,729,407 ) 21,324,444 — Aero Apartments Alameda, CA G 2021 200 13,107,242 100,519,872 104,683 13,107,242 100,624,555 113,731,797 ( 10,818,873 ) 102,912,924 — Alban Towers Washington, D.C. — 1934 229 18,900,000 89,794,201 8,117,051 18,900,000 97,911,252 116,811,252 ( 40,243,353 ) 76,567,899 — Alborada Fremont, CA — 1999 442 24,310,000 59,214,129 11,057,491 24,310,000 70,271,620 94,581,620 ( 55,425,390 ) 39,156,230 — Alcott Apartments (fka West End Tower) Boston, MA G 2021 470 10,424,000 398,024,518 707,600 10,424,000 398,732,118 409,156,118 ( 33,508,942 ) 375,647,176 — Alcyone Seattle, WA G 2004 162 11,379,497 49,360,503 2,564,761 11,379,497 51,925,264 63,304,761 ( 18,898,816 ) 44,405,945 — Altitude (fka Village at Howard Hughes, The (Lots 1 & 2)) Los Angeles, CA — 2016 545 43,783,485 150,234,305 2,130,013 43,783,485 152,364,318 196,147,803 ( 45,260,093 ) 150,887,710 — Alton, The (fka Millikan) Irvine, CA — 2017 344 11,049,027 96,523,927 896,714 11,049,027 97,420,641 108,469,668 ( 27,304,190 ) 81,165,478 — EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation December 31, 2023 Description Initial Cost to Cost Gross Amount Carried at Apartment Name Location Non-Residential Date of Apartment Land Building & Building & Land Building & Total (B) Accumulated Investment Encumbrances Arbor Terrace Sunnyvale, CA — 1979 177 9,057,300 18,483,642 13,187,247 9,057,300 31,670,889 40,728,189 ( 24,481,933 ) 16,246,256 — Arches, The Sunnyvale, CA — 1974 410 26,650,000 62,850,000 15,685,977 26,650,000 78,535,977 105,185,977 ( 34,669,178 ) 70,516,799 — Artisan on Second Los Angeles, CA — 2008 118 8,000,400 36,074,600 2,805,294 8,000,400 38,879,894 46,880,294 ( 18,009,181 ) 28,871,113 — Artistry Emeryville (fka Emeryville) Emeryville, CA — 1994 267 12,300,000 61,466,267 9,843,817 12,300,000 71,310,084 83,610,084 ( 32,323,930 ) 51,286,154 — Atelier Brooklyn, NY G 2015 120 32,401,680 47,135,432 1,091,757 32,401,680 48,227,189 80,628,869 ( 15,712,454 ) 64,916,415 — Axis at Shady Grove Rockville, MD — 2016 366 14,745,774 90,503,831 917,567 14,745,774 91,421,398 106,167,172 ( 24,584,449 ) 81,582,723 — Azure (fka Mission Bay-Block 13) San Francisco, CA — 2015 273 32,855,115 153,566,841 2,170,015 32,855,115 155,736,856 188,591,971 ( 48,623,946 ) 139,968,025 — Bay Hill Long Beach, CA — 2002 160 7,600,000 27,437,239 4,964,954 7,600,000 32,402,193 40,002,193 ( 21,835,777 ) 18,166,416 — Beatrice, The New York, NY — 2010 302 114,351,405 165,648,595 3,995,875 114,351,405 169,644,470 283,995,875 ( 73,548,689 ) 210,447,186 — Bella Vista I, II, III Combined Woodland Hills, CA — 2003-2007 579 31,682,754 121,095,786 15,188,788 31,682,754 136,284,574 167,967,328 ( 83,555,036 ) 84,412,292 — Belle Arts Condominium Homes, LLC Bellevue, WA — 2000 1 63,158 236,157 2,098 63,158 238,255 301,413 ( 124,113 ) 177,300 — Belle Fontaine Marina Del Rey, CA — 2003 102 9,098,808 28,701,192 3,444,563 9,098,808 32,145,755 41,244,563 ( 14,408,672 ) 26,835,891 — Breakwater at Marina Del Rey Marina Del Rey, CA — 1964-1969 224 — 73,189,262 3,136,929 — 76,326,191 76,326,191 ( 32,636,843 ) 43,689,348 — Briarwood (CA) Sunnyvale, CA — 1985 192 9,991,500 22,247,278 13,063,331 9,991,500 35,310,609 45,302,109 ( 23,585,266 ) 21,716,843 — Brodie, The Westminster, CO — 2016 312 8,639,904 79,257,130 1,753,507 8,639,904 81,010,637 89,650,541 ( 20,858,102 ) 68,792,439 — Brooklyner, The (fka 111 Lawrence) Brooklyn, NY G 2010 490 40,099,922 221,438,631 6,118,634 40,099,922 227,557,265 267,657,187 ( 101,708,858 ) 165,948,329 — C on Pico Los Angeles, CA — 2014 94 17,125,766 28,074,234 704,768 17,125,766 28,779,002 45,904,768 ( 9,424,001 ) 36,480,767 — Carlyle Mill Alexandria, VA — 2002 317 10,000,000 51,367,913 12,565,532 10,000,000 63,933,445 73,933,445 ( 44,576,313 ) 29,357,132 — Carmel Terrace San Diego, CA — 1988-1989 384 2,288,300 20,596,281 21,048,610 2,288,300 41,644,891 43,933,191 ( 33,112,960 ) 10,820,231 — Cascade Seattle, WA G 2017 477 23,751,564 149,406,957 1,129,025 23,751,564 150,535,982 174,287,546 ( 38,651,067 ) 135,636,479 — Centennial (fka Centennial Court & Centennial Tower) Seattle, WA G 1991/2001 408 9,700,000 70,080,378 17,577,904 9,700,000 87,658,282 97,358,282 ( 58,180,900 ) 39,177,382 — Centre Club Combined Ontario, CA — 1994 & 2002 412 7,436,000 33,014,789 12,451,304 7,436,000 45,466,093 52,902,093 ( 34,033,011 ) 18,869,082 — Chelsea Square Redmond, WA — 1991 113 3,397,100 9,289,074 3,370,676 3,397,100 12,659,750 16,056,850 ( 10,679,531 ) 5,377,319 — Chloe on Madison (fka 1401 E. Madison) Seattle, WA G 2019 137 10,401,958 53,913,565 109,171 10,401,958 54,022,736 64,424,694 ( 9,225,790 ) 55,198,904 — Chloe on Union (fka Chloe) Seattle, WA G 2010 117 14,835,571 39,359,650 3,301,073 14,835,571 42,660,723 57,496,294 ( 11,890,890 ) 45,605,404 — Church Corner Cambridge, MA G 1987 85 5,220,000 16,744,643 3,816,835 5,220,000 20,561,478 25,781,478 ( 14,047,556 ) 11,733,922 — Circa Fitzsimons Denver, CO — 2020 280 9,241,400 86,070,796 625,672 9,241,400 86,696,468 95,937,868 ( 11,403,217 ) 84,534,651 — City Gate at Cupertino (fka Cupertino) Cupertino, CA — 1998 311 40,400,000 95,937,046 8,960,917 40,400,000 104,897,963 145,297,963 ( 44,848,845 ) 100,449,118 — City Square Bellevue (fka Bellevue) Bellevue, WA G 1998 191 15,100,000 41,876,257 5,710,373 15,100,000 47,586,630 62,686,630 ( 20,232,213 ) 42,454,417 — Clarendon, The Arlington, VA G 2005 292 30,400,340 103,824,660 5,885,173 30,400,340 109,709,833 140,110,173 ( 51,014,797 ) 89,095,376 — Cleo, The Los Angeles, CA — 1989 92 6,615,467 14,829,335 4,785,294 6,615,467 19,614,629 26,230,096 ( 12,188,753 ) 14,041,343 — Cleveland House Washington, D.C. — 1953 214 18,300,000 66,392,414 9,164,220 18,300,000 75,556,634 93,856,634 ( 31,747,411 ) 62,109,223 — Connecticut Heights Washington, D.C. — 1974 518 27,600,000 114,002,295 12,080,368 27,600,000 126,082,663 153,682,663 ( 53,418,758 ) 100,263,905 — Corcoran House at DuPont Circle (fka DuPont Circle) Washington, D.C. G 1961 138 13,500,000 26,913,113 5,223,942 13,500,000 32,137,055 45,637,055 ( 14,041,548 ) 31,595,507 — Courthouse Plaza Arlington, VA G 1990 396 — 87,386,024 9,408,049 — 96,794,073 96,794,073 ( 42,702,367 ) 54,091,706 — Creekside (San Mateo) San Mateo, CA — 1985 192 9,606,600 21,193,232 6,417,124 9,606,600 27,610,356 37,216,956 ( 23,016,852 ) 14,200,104 — Cronins Landing Waltham, MA G 1998 281 32,300,000 85,119,324 16,618,711 32,300,000 101,738,035 134,038,035 ( 44,049,990 ) 89,988,045 — Crystal Place Arlington, VA — 1986 181 17,200,000 47,918,975 6,465,464 17,200,000 54,384,439 71,584,439 ( 23,323,848 ) 48,260,591 — Dalton, The Alexandria, VA G 2018 270 22,947,777 95,334,754 520,384 22,947,777 95,855,138 118,802,915 ( 18,310,220 ) 100,492,695 — Deerwood (SD) San Diego, CA — 1990 316 2,082,095 18,739,815 18,736,371 2,082,095 37,476,186 39,558,281 ( 34,569,639 ) 4,988,642 — Del Mar Ridge San Diego, CA — 1998 181 7,801,824 36,948,176 9,128,679 7,801,824 46,076,855 53,878,679 ( 23,465,530 ) 30,413,149 — Eagle Canyon Chino Hills, CA — 1985 252 1,808,900 16,274,361 13,396,931 1,808,900 29,671,292 31,480,192 ( 25,455,777 ) 6,024,415 — Edge, The (fka 4885 Edgemoor Lane) Bethesda, MD — 2021 154 — 72,836,851 47,591 — 72,884,442 72,884,442 ( 7,419,177 ) 65,465,265 — Edgemont at Bethesda Metro Bethesda, MD — 1989 123 13,092,552 43,907,448 5,501,637 13,092,552 49,409,085 62,501,637 ( 22,196,226 ) 40,305,411 — EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation December 31, 2023 Description Initial Cost to Cost Gross Amount Carried at Apartment Name Location Non-Residential Date of Apartment Land Building & Building & Land Building & Total (B) Accumulated Investment Encumbrances Emerson Place Boston, MA G 1962 444 14,855,000 57,566,636 39,564,184 14,855,000 97,130,820 111,985,820 ( 80,591,213 ) 31,394,607 — Encore at Sherman Oaks, The Sherman Oaks, CA — 1988 174 8,700,000 25,446,003 5,534,741 8,700,000 30,980,744 39,680,744 ( 15,446,990 ) 24,233,754 — Estancia at Santa Clara (fka Santa Clara) Santa Clara, CA — 2000 450 — 123,759,804 10,018,382 — 133,778,186 133,778,186 ( 54,209,519 ) 79,568,667 — Eviva on Cherokee Denver, CO — 2017 274 10,507,626 100,037,204 2,351,489 10,507,626 102,388,693 112,896,319 ( 22,757,962 ) 90,138,357 — Flora Austin, TX — 2019 194 5,733,088 32,343,349 709,561 5,733,088 33,052,910 38,785,998 ( 6,108,471 ) 32,677,527 — Fremont Center Fremont, CA G 2002 322 25,800,000 78,753,114 9,001,771 25,800,000 87,754,885 113,554,885 ( 37,054,339 ) 76,500,546 — Gaithersburg Station Gaithersburg, MD G 2013 400 17,500,000 74,678,917 6,895,451 17,500,000 81,574,368 99,074,368 ( 32,497,818 ) 66,576,550 — Gateway at Malden Center Malden, MA G 1988 203 9,209,780 25,722,666 19,657,330 9,209,780 45,379,996 54,589,776 ( 34,108,785 ) 20,480,991 — Geary Court Yard San Francisco, CA — 1990 165 1,722,400 15,471,429 6,820,508 1,722,400 22,291,937 24,014,337 ( 19,281,906 ) 4,732,431 — Girard Boston, MA G 2016 160 — 102,450,328 1,322,917 — 103,773,245 103,773,245 ( 26,132,043 ) 77,641,202 — Hampshire Place Los Angeles, CA — 1989 259 10,806,000 30,335,330 12,691,799 10,806,000 43,027,129 53,833,129 ( 26,984,424 ) 26,848,705 — Harbor Steps Seattle, WA G 2000 761 59,403,601 158,829,432 60,387,650 59,403,601 219,217,082 278,620,683 ( 133,704,499 ) 144,916,184 — Hathaway Long Beach, CA — 1987 385 2,512,500 22,611,912 16,834,416 2,512,500 39,446,328 41,958,828 ( 33,365,015 ) 8,593,813 — Helios (fka 2nd+Pine) Seattle, WA G 2017 398 18,061,674 206,762,591 1,391,969 18,061,674 208,154,560 226,216,234 ( 53,149,822 ) 173,066,412 — Heritage at Stone Ridge Burlington, MA — 2005 180 10,800,000 31,808,335 6,898,871 10,800,000 38,707,206 49,507,206 ( 23,082,304 ) 26,424,902 — Heritage Ridge Lynwood, WA — 1999 197 6,895,000 18,983,597 5,865,406 6,895,000 24,849,003 31,744,003 ( 16,027,471 ) 15,716,532 — Hesby North Hollywood, CA — 2013 308 23,299,892 102,700,108 3,620,381 23,299,892 106,320,489 129,620,381 ( 39,156,702 ) 90,463,679 — Highlands at South Plainfield South Plainfield, NJ — 2000 252 10,080,000 37,526,912 4,075,515 10,080,000 41,602,427 51,682,427 ( 26,247,074 ) 25,435,353 — Hikari Los Angeles, CA G 2007 128 9,435,760 32,564,240 2,625,378 9,435,760 35,189,618 44,625,378 ( 16,167,679 ) 28,457,699 — Hudson Crossing New York, NY G 2003 259 23,420,000 69,977,699 5,378,863 23,420,000 75,356,562 98,776,562 ( 48,829,162 ) 49,947,400 — Hudson Pointe Jersey City, NJ G 2003 182 5,350,000 41,114,074 8,918,277 5,350,000 50,032,351 55,382,351 ( 34,040,770 ) 21,341,581 — Huxley, The Redwood City, CA — 2018 137 18,775,028 89,336,651 555,115 18,775,028 89,891,766 108,666,794 ( 16,805,781 ) 91,861,013 — Indie Deep Ellum Dallas, TX G 2020 231 12,253,503 63,853,833 901,501 12,253,503 64,755,334 77,008,837 ( 8,878,139 ) 68,130,698 — Ivory Wood Bothell, WA — 2000 144 2,732,800 13,888,282 5,558,625 2,732,800 19,446,907 22,179,707 ( 11,427,052 ) 10,752,655 — Jia (fka Chinatown Gateway) Los Angeles, CA G 2014 280 14,791,831 78,286,423 2,962,875 14,791,831 81,249,298 96,041,129 ( 33,138,562 ) 62,902,567 — Junction 47 (fka West Seattle) Seattle, WA G 2015 206 11,726,305 56,581,665 1,152,881 11,726,305 57,734,546 69,460,851 ( 19,405,411 ) 50,055,440 — Juniper Sandy Springs Sandy Springs, GA — 2017 230 8,668,700 64,989,813 716,375 8,668,700 65,706,188 74,374,888 ( 8,984,522 ) 65,390,366 — Kelvin, The (fka Modera) Irvine, CA — 2015 194 15,521,552 64,853,448 1,566,632 15,521,552 66,420,080 81,941,632 ( 22,771,191 ) 59,170,441 — Kilby Frisco, TX — 2020 258 6,431,940 64,187,474 617,387 6,431,940 64,804,861 71,236,801 ( 9,248,837 ) 61,987,964 — Laguna Clara Santa Clara, CA — 1972 222 10,441,994 22,572,843 37,440,159 10,441,994 60,013,002 70,454,996 ( 23,986,326 ) 46,468,670 — Laguna Clara II Santa Clara, CA — (F) — 3,200,426 74,835,894 — 3,200,426 74,835,894 78,036,320 — 78,036,320 — Landings at Port Imperial W. New York, NJ — 1999 276 27,246,045 37,741,049 18,166,959 27,246,045 55,908,008 83,154,053 ( 42,240,676 ) 40,913,377 — Lane Seattle, WA G 2019 217 13,142,946 71,942,751 433,093 13,142,946 72,375,844 85,518,790 ( 13,223,818 ) 72,294,972 — Lex, The San Jose, CA — 2017 387 21,817,512 158,778,598 2,422,042 21,817,512 161,200,640 183,018,152 ( 33,432,604 ) 149,585,548 — Liberty Park Braintree, MA — 2000 202 5,977,504 26,749,111 9,311,443 5,977,504 36,060,554 42,038,058 ( 25,793,896 ) 16,244,162 — Liberty Tower Arlington, VA G 2008 235 16,382,822 83,817,078 9,377,043 16,382,822 93,194,121 109,576,943 ( 45,138,808 ) 64,438,135 — Lincoln Heights Quincy, MA — 1991 336 5,928,400 33,595,262 17,591,688 5,928,400 51,186,950 57,115,350 ( 44,339,403 ) 12,775,947 — Lofts at Kendall Square (fka Kendall Square) Cambridge, MA — 1998 186 18,696,674 78,445,657 8,634,537 18,696,674 87,080,194 105,776,868 ( 37,626,154 ) 68,150,714 — Lofts at Kendall Square ll (fka 249 Third Street) Cambridge, MA G 2019 84 4,603,326 44,187,266 318,540 4,603,326 44,505,806 49,109,132 ( 7,430,067 ) 41,679,065 — Longacre House New York, NY G 2000 293 73,170,045 53,962,510 7,667,753 73,170,045 61,630,263 134,800,308 ( 34,732,681 ) 100,067,627 — Longfellow Place Boston, MA G 1975 710 38,264,917 132,175,915 109,245,678 38,264,917 241,421,593 279,686,510 ( 191,850,552 ) 87,835,958 — Luna Upper Westside Atlanta, GA — 2020 345 14,847,420 108,325,394 593,390 14,847,420 108,918,784 123,766,204 ( 13,248,308 ) 110,517,896 — Madox Jersey City, NJ G 2013 131 9,679,635 64,594,205 1,645,456 9,679,635 66,239,661 75,919,296 ( 15,369,145 ) 60,550,151 — EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation December 31, 2023 Description Initial Cost to Cost Gross Amount Carried at Apartment Name Location Non-Residential Date of Apartment Land Building & Building & Land Building & Total (B) Accumulated Investment Encumbrances Mantena New York, NY G 2012 98 22,346,513 61,501,158 2,188,992 22,346,513 63,690,150 86,036,663 ( 26,550,412 ) 59,486,251 — Mara Pacific Beach San Diego, CA G 2020 172 25,360,682 87,755,429 1,410,014 25,360,682 89,165,443 114,526,125 ( 9,204,461 ) 105,321,664 — Marina 41 (fka Marina Del Rey) Marina Del Rey, CA — 1973 623 — 168,842,442 12,614,637 — 181,457,079 181,457,079 ( 78,411,305 ) 103,045,774 — Mariposa at Playa Del Rey (fka Playa Del Rey) Playa Del Rey, CA — 2004 354 60,900,000 89,311,482 14,223,579 60,900,000 103,535,061 164,435,061 ( 42,508,058 ) 121,927,003 — Market Street Village San Diego, CA — 2006 229 13,740,000 40,757,301 3,472,332 13,740,000 44,229,633 57,969,633 ( 26,991,272 ) 30,978,361 — Marlowe (fka Oakwood Crystal City) Arlington, VA — 1987 162 15,400,000 35,474,336 6,261,340 15,400,000 41,735,676 57,135,676 ( 18,198,660 ) 38,937,016 — Milano Lofts Los Angeles, CA G 1925/2006 99 8,125,216 27,378,784 5,530,316 8,125,216 32,909,100 41,034,316 ( 14,623,666 ) 26,410,650 — Mill Creek Milpitas, CA — 1991 516 12,858,693 57,168,503 20,302,965 12,858,693 77,471,468 90,330,161 ( 53,791,805 ) 36,538,356 — Milo Denver, CO — 2020 319 15,957,975 153,331,358 1,631,738 15,957,975 154,963,096 170,921,071 ( 15,719,277 ) 155,201,794 — Mosaic at Metro Hyattsville, MD — 2008 260 — 59,580,898 2,376,256 — 61,957,154 61,957,154 ( 32,149,923 ) 29,807,231 — Mountain View Redevelopment Mountain View, CA — (F) — — 2,690,285 — — 2,690,285 2,690,285 — 2,690,285 — Mozaic at Union Station Los Angeles, CA — 2007 272 8,500,000 52,529,446 5,360,565 8,500,000 57,890,011 66,390,011 ( 33,745,465 ) 32,644,546 — Murray Hill Tower (fka Murray Hill) New York, NY G 1974 270 75,800,000 102,705,401 15,903,328 75,800,000 118,608,729 194,408,729 ( 52,828,918 ) 141,579,811 — Next on Sixth Los Angeles, CA G 2017 398 52,509,906 136,635,650 1,404,646 52,509,906 138,040,296 190,550,202 ( 29,659,205 ) 160,890,997 — North Pier at Harborside Jersey City, NJ — 2003 297 4,000,159 94,290,590 14,655,270 4,000,159 108,945,860 112,946,019 ( 69,398,688 ) 43,547,331 — Northglen Valencia, CA — 1988 234 9,360,000 20,778,553 8,016,329 9,360,000 28,794,882 38,154,882 ( 21,634,092 ) 16,520,790 — Northpark Burlingame, CA — 1972 510 38,607,000 77,472,217 20,077,277 38,607,000 97,549,494 136,156,494 ( 54,387,642 ) 81,768,852 — Oak Park Combined Agoura Hills, CA — 1989 & 1990 444 3,390,700 30,517,274 13,167,882 3,390,700 43,685,156 47,075,856 ( 39,986,282 ) 7,089,574 — Oaks Santa Clarita, CA — 2000 520 23,400,000 61,020,438 18,187,526 23,400,000 79,207,964 102,607,964 ( 50,232,040 ) 52,375,924 — Ocean Crest Solana Beach, CA — 1986 146 5,111,200 11,910,438 5,778,689 5,111,200 17,689,127 22,800,327 ( 14,730,437 ) 8,069,890 — Odin (fka Tallman) Seattle, WA — 2015 301 16,807,519 64,519,515 827,649 16,807,519 65,347,164 82,154,683 ( 21,646,607 ) 60,508,076 — Olivian at the Realm Lewisville, TX — 2021 421 14,854,564 109,313,571 1,162,940 14,854,564 110,476,511 125,331,075 ( 12,312,825 ) 113,018,250 — One Henry Adams San Francisco, CA G 2016 241 30,224,393 139,704,146 1,286,618 30,224,393 140,990,764 171,215,157 ( 39,511,777 ) 131,703,380 — One India Street (fka Oakwood Boston) Boston, MA G 1901 94 22,200,000 28,672,979 7,294,988 22,200,000 35,967,967 58,167,967 ( 16,671,590 ) 41,496,377 — Osprey Atlanta, GA G 2020 320 18,121,932 116,950,910 795,010 18,121,932 117,745,920 135,867,852 ( 13,708,059 ) 122,159,793 — Pacific Place Los Angeles, CA — 2008 430 32,250,000 110,750,000 9,450,100 32,250,000 120,200,100 152,450,100 ( 46,424,357 ) 106,025,743 — Packard Building Seattle, WA G 2010 61 5,911,041 19,954,959 1,559,243 5,911,041 21,514,202 27,425,243 ( 7,229,644 ) 20,195,599 — Parc 77 New York, NY G 1903 137 40,504,000 18,025,679 7,970,358 40,504,000 25,996,037 66,500,037 ( 17,581,457 ) 48,918,580 — Parc Cameron New York, NY G 1927 166 37,600,000 9,855,597 8,449,294 37,600,000 18,304,891 55,904,891 ( 13,879,196 ) 42,025,695 — Parc Coliseum New York, NY G 1910 177 52,654,000 23,045,751 10,770,843 52,654,000 33,816,594 86,470,594 ( 23,394,106 ) 63,076,488 — Parc East Towers New York, NY G 1977 324 102,163,000 108,989,402 15,586,244 102,163,000 124,575,646 226,738,646 ( 74,316,340 ) 152,422,306 — Parc on Powell (fka Parkside at Emeryville) Emeryville, CA G 2015 173 16,667,059 65,473,337 3,310,713 16,667,059 68,784,050 85,451,109 ( 22,819,414 ) 62,631,695 — Park Connecticut Washington, D.C. — 2000 142 13,700,000 59,087,519 5,912,747 13,700,000 65,000,266 78,700,266 ( 25,595,262 ) 53,105,004 — Park West (CA) Los Angeles, CA — 1987/1990 444 3,033,500 27,302,383 15,665,950 3,033,500 42,968,333 46,001,833 ( 37,830,238 ) 8,171,595 — Parkside Union City, CA — 1979 208 6,246,700 11,827,453 9,034,696 6,246,700 20,862,149 27,108,849 ( 16,929,525 ) 10,179,324 — Pearl, The (WA) Seattle, WA G 2008 80 6,972,585 26,527,415 1,496,143 6,972,585 28,023,558 34,996,143 ( 9,753,976 ) 25,242,167 — Pearl MDR (fka Oakwood Marina Del Rey) Marina Del Rey, CA G 1969 597 — 120,795,359 25,387,707 — 146,183,066 146,183,066 ( 58,974,843 ) 87,208,223 — Pegasus Los Angeles, CA G 1949/2003 322 18,094,052 81,905,948 11,486,175 18,094,052 93,392,123 111,486,175 ( 45,871,998 ) 65,614,177 — Penman, The Atlanta, GA G 2023 262 9,942,043 68,917,572 413,300 9,942,043 69,330,872 79,272,915 ( 3,261,263 ) 76,011,652 — Portofino Chino Hills, CA — 1989 176 3,572,400 14,660,994 5,368,196 3,572,400 20,029,190 23,601,590 ( 16,858,559 ) 6,743,031 — Portofino (Val) Valencia, CA — 1989 216 8,640,000 21,487,126 7,133,484 8,640,000 28,620,610 37,260,610 ( 22,054,016 ) 15,206,594 — Portside Towers Jersey City, NJ G 1992-1997 527 22,487,006 96,842,913 31,772,570 22,487,006 128,615,483 151,102,489 ( 108,369,349 ) 42,733,140 — Potrero 1010 San Francisco, CA G 2016 453 40,830,011 181,924,463 2,633,921 40,830,011 184,558,384 225,388,395 ( 56,411,881 ) 168,976,514 — EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP Schedule III - Real Estate and Accumulated Depreciation December 31, 2023 Description Initial Cost to Cost Gross Amount Carried at Apartment Name Location Non-Residential Date of Apartment Land Building & Building & Land Building & Total (B) Accumulated Investment Encumbrances Prado (fka Glendale) Glendale, CA — 1988 264 — 67,977,313 7,812,571 — 75,789,884 75,789,884 ( 32,306,839 ) 43,483,045 — Prime, The Arlington, VA — 2002 281 34,625,000 77,879,740 11,451,378 34,625,000 89,331,118 123,956,118 ( 45,403,647 ) 78,552,471 — Prism at Park Avenue South (fka 400 Park Avenue South) New York, NY G 2015 269 76,292,169 171,812,112 480,769 76,292,169 172,292,881 248,585,050 ( 58,984,500 ) 189,600,550 — Promenade at Town Center I & II Valencia, CA — 2001 564 28,200,000 69,795,915 19,178,549 28,200,000 88,974,464 117,174,464 ( 57,965,755 ) 59,208,709 — Providence Bothell, WA — 2000 200 3,573,621 19,055,505 6,956,842 3,573,621 26,012,347 29,585,968 ( 16,594,365 ) 12,991,603 — Quarry Hills Quincy, MA — 2006 316 26,900,000 84,411,162 7,884,801 26,900,000 92,295,963 119,195,963 ( 38,628,384 ) 80,567,579 — Radiant Fairfax Ridge Fairfax, VA — 2016 213 7,352,547 63,018,744 763,336 7,352,547 63,782,080 71,134,627 ( 9,407,562 ) 61,727,065 — Radius Uptown Denver, CO — 2017 372 13,644,960 121,899,084 2,684,835 13,644,960 124,583,919 138,228,879 ( 30,154,484 ) 108,074,395 — Redmond Court Bellevue, WA — 1977 206 10,300,000 33,488,745 5,757,284 10,300,000 39,246,029 49,546,029 ( 16,909,272 ) 32,636,757 — Regency Palms Huntington Beach, CA — 1969 310 1,857,400 16,713,254 9,768,897 1,857,400 26,482,151 28,339,551 ( 23,045,040 ) 5,294,511 — Reserve at Burlington, The Burlington, MA — 2019 270 20,250,000 114,476,933 1,192,804 20,250,000 115,669,737 135,919,737 ( 14,832,668 ) 121,087,069 — Reserve at Clarendon Centre, The Arlington, VA G 2003 252 10,500,000 52,812,935 7,497,244 10,500,000 60,310,179 70,810,179 ( 41,008,914 ) 29,801,265 — Reserve at Eisenhower, The Alexandria, VA — 2002 226 6,500,000 34,585,059 6,366,435 6,500,000 40,951,494 47,451,494 ( 28,643,944 ) 18,807,550 — Reserve at Empire Lakes Rancho Cucamonga, CA — 2005 467 16,345,000 73,080,670 14,209,264 16,345,000 87,289,934 103,634,934 ( 51,335,751 ) 52,299,183 — Reserve at Fairfax Corner Fairfax, VA — 2001 652 15,804,057 63,129,050 16,050,762 15,804,057 79,179,812 94,983,869 ( 57,156,000 ) 37,827,869 — Reserve at Mountain View (fka Mountain View) Mountain View, CA — 1965 180 27,000,000 33,029,605 9,940,765 27,000,000 42,970,370 69,970,370 ( 20,306,708 ) 49,663,662 — Reserve at Potomac Yard Alexandria, VA — 2002 588 11,918,917 68,862,641 22,487,722 11,918,917 91,350,363 103,269,280 ( 61,488,868 ) 41,780,412 — Reserve at Town Center I-III (WA) Mill Creek, WA G 2001, 2009, 2014 584 16,768,705 77,623,664 14,491,401 16,768,705 92,115,065 108,883,770 ( 50,723,769 ) 58,160,001 — Rianna I & II Seattle, WA G 2000/2002 156 4,430,000 29,298,096 4,922,304 4,430,000 34,220,400 38,650,400 ( 17,048,020 ) 21,602,380 — Richmond Row Suwanee, GA — 2023 344 10,030,008 88,340,263 7,075 10,030,008 88,347,338 98,377,346 ( 2,992,401 ) 95,384,945 — Ridgewood Village I&II San Diego, CA — 1997 408 11,809,500 34,004,048 8,600,913 11,809,500 42,604,961 54,414,461 ( 34,187,275 ) 20,227,186 — Riva Terra I (fka Redwood Shores) Redwood City, CA — 1986 304 34,963,355 84,587,658 10,990,949 34,963,355 95,578,607 130,541,962 ( 42,139,194 ) 88,402,768 — Riva Terra II (fka Harborside) Redwood City, CA — 1986 149 17,136,645 40,536,531 5,308,292 17,136,645 45,844,823 62,981,468 ( 19,195,628 ) 43,785,840 — Riverpark Redmond, WA G 2009 321 14,355,000 80,894,049 6,478,677 14,355,000 87,372,726 101,727,726 ( 39,802,428 ) 61,925,298 — Rivington, The Hoboken, NJ — 1999 240 34,340,640 112,112,152 6,247,025 34,340,640 118,359,177 152,699,817 ( 29,568,763 ) 123,131,054 — Rivington II, The Hoboken, NJ — (F) — — 882,999 — — 882,999 882,999 — 882,999 — Rosecliff II Quincy, MA — 2005 130 4,922,840 30,202,160 3,144,895 4,922,840 33,347,055 38,269,895 ( 15,693,941 ) 22,575,954 — Sakura Crossing Los Angeles, CA G 2009 230 14,641,990 42,858,010 2,295,778 14,641,990 45,153,788 59,795,778 ( 21,869,195 ) 37,926,583 — Savanna Nine Mile Erie, CO — 2022 287 9,386,048 98,792,001 327,082 9,386,048 99,119,083 108,505,131 ( 6,144,916 ) 102,360,215 — Saxton Seattle, WA G 2019 325 38,805,400 128,652,023 1,017,507 38,805,400 129,669,530 168,474,930 ( 24,464,893 ) 144,010,037 — Sheffield Court Arlington, VA — 1986 597 3,342,381 31,337,332 28,451,637 3,342,381 59,788,969 63,131,350 ( 49,017,026 ) 14,114,324 — Siena Terrace Lake Forest, CA — 1988 356 8,900,000 24,083,024 10,161,947 8,900,000 34,244,971 43,144,971 ( 28,124,403 ) 15,020,568 — Skycrest Valencia, CA — 1999 264 10,560,000 25,574,457 7,261,508 10,560,000 32,835,965 43,395,965 ( 25,008,353 ) 18,387,612 — Skyhouse South Atlanta, GA G 2014 320 14,182,277 101,911,477 865,625 14,182,277 102,777,102 116,959,379 ( 14,711,876 ) 102,247,503 — Skylark Union City, CA — 1986 174 1,781,600 16,731,916 6,385,765 1,781,600 23,117,681 24,899,281 ( 19,266,032 ) 5,633,249 — Skyview Rancho Santa Margarita, CA — 1999 260 3,380,000 21,952,863 7,822,233 3,380,000 29,775,096 33,155,096 ( 23,882,860 ) 9,272,236 — SoMa II San Francisco, CA — (F) — 29,406,606 5,946,220 — 29,406,606 5,946,220 35,352,826 — 35,352,826 — Sonterra at Foothill Ranch Foothill Ranch, CA — 1997 300 7,503,400 24,048,507 7,306,241 7,503,400 31,354,748 38,858,148 ( 26,411,678 ) 12,446,470 — South City Station (fka South San Francisco) San Francisco, CA G 2007 368 68,900,000 79,476,861 11,170,173 6

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Summary Of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Due to the Company’s ability as general partner to control either through ownership or by contract the Operating Partnership and its subsidiaries, the Operating Partnership and each such subsidiary has been consolidated with the Company for financial reporting purposes, except for any unconsolidated properties/entities.
Real Estate Assets And Depreciation Of Investment In Real Estate	Real Estate Assets and Depreciation of Investment in Real Estate The Company expects that substantially all of its acquisitions will be accounted for as asset acquisitions. In an asset acquisition, the Company is required to capitalize transaction costs and allocate the purchase price on a relative fair value basis (including any identified intangible assets). For the years ended December 31, 2023 and 2022, all acquisitions were considered asset acquisitions. In making estimates of relative fair values for purposes of allocating purchase price, the Company utilizes a number of sources, including independent appraisals that may be obtained in connection with the acquisition or financing of the respective property, our own analysis of recently acquired or developed and existing comparable properties in our portfolio and other market data. The Company also considers information obtained about each property as a result of its pre-acquisition due diligence, marketing and leasing activities in estimating the relative fair value of the tangible and intangible assets/liabilities acquired. The Company allocates the purchase price of acquired real estate to various components as follows: • Land – Based on actual purchase price adjusted to an allocation of the relative fair value (as necessary) if acquired separately or market research/comparables if acquired with an operating property. • Furniture, Fixtures and Equipment – Based on an estimate of the allocation of the relative fair value of the appliances and fixtures inside an apartment unit. The per-apartment unit amount applied depends on the economic age of the apartment units acquired. Depreciation is calculated on the straight-line method over an estimated useful life of five to ten years . • Lease Intangibles – The Company considers the value of acquired in-place leases and above/below market leases and the amortization period is the average remaining term of each respective acquired lease. • Other Intangible Assets – The Company considers whether it has acquired other intangible assets, including any customer relationship intangibles and the amortization period is the estimated useful life of the acquired intangible asset. • Building – Based on the allocation of the relative fair value determined on an “as-if vacant” basis. Depreciation is calculated on the straight-line method over an estimated useful life of thirty years . • Long-Term Debt – The Company calculates the allocation of the relative fair value by discounting the remaining contractual cash flows on each instrument at the current market rate for those borrowings. Replacements inside an apartment unit such as appliances and carpeting are depreciated over an estimated useful life of five to ten years . Expenditures for ordinary maintenance and repairs are expensed to operations as incurred and significant renovations and building improvements that improve and/or extend the useful life of the asset are capitalized over their estimated useful life, generally five to fifteen years . Initial direct leasing costs are expensed as incurred as such expense approximates the deferral and amortization of initial direct leasing costs over the lease terms. The Company classifies real estate assets as real estate held for sale when it is probable a property will be disposed of. The Company classifies properties under development and/or expansion and properties in the lease-up phase (including land) as construction-in-progress until construction has been completed and certificates of occupancy permits have been obtained.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets At least quarterly, the Company evaluates its long-lived assets, including its investment in real estate, for indicators of impairment. The judgments regarding the existence of impairment indicators are based on factors such as operational performance, market conditions, legal, regulatory and environmental concerns, the Company’s intent and ability to hold the related asset, as well as any significant cost overruns on development properties. Future events could occur which would cause the Company to conclude that impairment indicators exist and an impairment loss is warranted. If an impairment indicator exists, the Company performs the following: • For long-lived operating assets to be held and used, the Company compares the expected future undiscounted cash flows for the long-lived asset against the carrying amount of that asset. If the sum of the estimated undiscounted cash flows is less than the carrying amount of the asset, the Company would make an estimate of the fair value for the particular asset and would record an impairment loss for the difference between the estimated fair value and the carrying amount of the asset. In determining the future undiscounted cash flows or the estimated fair value of an asset there is judgment in estimating the expected future rental revenues, operating expenses and discount and capitalization rates. • For long-lived non-operating assets (projects under development and land held for development), management evaluates major cost overruns, market conditions that could affect lease-up projections, intent and ability to hold the asset, and any other indicators of impairment. If any of the indicators were to suggest impairment was present, a recoverability analysis would be performed and the carrying value of the asset would be adjusted accordingly to fair value. • For long-lived assets to be disposed of, an impairment loss is recognized when the estimated fair value of the asset, less the estimated cost to sell, is less than the carrying amount of the asset measured at the time that the Company has determined it is probable that the asset will be disposed of. Long-lived assets held for sale and the related liabilities are separately reported, with the long-lived assets reported at the lower of their carrying amounts or their estimated fair values, less their costs to sell, and are not depreciated after reclassification to real estate held for sale. See Note 4 for further discussion of the Company’s impairment charge on a land parcel in 2021.
Impairment of Investments in Unconsolidated Entities and Other Investments	Impairment of Investments in Unconsolidated Entities and Other Investments At least quarterly, the Company evaluates its investments in unconsolidated entities and other investments for indicators of other than temporary impairment, considering whether there has been a change to events or circumstances that would impact recoverability of the Company’s investment as well as any changes with regards to the Company's intent and ability to hold the investment to recover its carrying value.
Cost Capitalization	Cost Capitalization See the Real Estate Assets and Depreciation of Investment in Real Estate section for a discussion of the Company’s policy with respect to capitalization vs. expensing of fixed asset/repair and maintenance costs. For all development, capital and renovation projects, the Company uses its professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. The Company capitalizes interest, real estate taxes and insurance, as well as payroll for those individuals directly responsible for and who spend their time on the execution and supervision of development activities. Additionally, the Company capitalizes payroll for those individuals directly responsible for and who spend their time on the execution and supervision of major capital and/or renovation projects. Capitalization ends when the asset, or a portion of the asset, is substantially completed and ready for its intended use. These costs are reflected on the balance sheets as increases to depreciable property and/or construction-in-progress. During the years ended December 31, 2023 and 2022, the Company capitalized $ 15.4 mil lion and $ 15.6 million, respectively, of payroll and associated costs of employees directly responsible for and who spend their time on the execution and supervision of development activities as well as major capital and/or renovation projects.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all demand deposits, money market accounts and investments in certificates of deposit with a maturity of three months or less at the date of purchase to be cash equivalents. The Company maintains its cash and cash equivalents at financial institutions. The combined account balances at one or more institutions typically exceed the Federal Deposit Insurance Corporation (“FDIC”) insurance coverage, and, as a result, there is a concentration of credit risk related to amounts on deposit in excess of FDIC insurance coverage. The Company believes that the risk is not significant, as the Company does not anticipate the financial institutions’ non-performance.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments. The Company, where possible, bases the fair values of its financial instruments on listed market prices and third-party quotes. Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments. In the normal course of business, the Company is exposed to the effect of interest rate changes. The Company may seek to manage these risks by following established risk management policies and procedures, including the use of derivatives to hedge interest rate risk on debt instruments. The Company may also use derivatives to manage commodity prices in the daily operations of the business. The Company has a policy of only entering into derivative contracts with major financial institutions based upon their credit ratings and other factors. When viewed in conjunction with the underlying and offsetting exposure that the derivatives are designed to hedge, the Company has not sustained a material loss from these instruments nor does it anticipate any material adverse effect on its net income or financial position in the future. The Company recognizes all derivatives as either assets or liabilities in the consolidated balance sheets and measures those instruments at fair value. In addition, fair value adjustments will affect either shareholders’ equity/partners’ capital or net income depending on whether the derivative instruments qualify as a hedge for accounting purposes and, if so, the nature of the hedging activity. When the terms of an underlying transaction are modified, or when the underlying transaction is terminated or completed, all changes in the fair value of the instrument are marked-to-market with changes in value included in net income each period until the instrument matures. Any derivative instrument used for risk management that does not meet the hedging criteria is marked-to-market each period. The Company does not use derivatives for trading or speculative purposes. See Note 10 for additional derivatives discussion.
Leases and Revenue Recognition	Leases and Revenue Recognition Rental income attributable to residential leases is recorded on a straight-line basis over the term of the lease when reasonably assured they are collectible, which is not materially different than if it were recorded when due from residents and recognized monthly as it was earned. Residential apartment leases may include lease income related to such items as utility recoveries, parking rent, storage rent and pet rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same. Leases entered into between a resident and a property for the rental of an apartment unit are generally year-to-year, renewable upon consent of both parties on an annual or monthly basis. Rental income attributable to non-residential leases is also recorded on a straight-line basis over the term of the lease when reasonably assured they are collectible. Non-residential leases may include lease income related to such items as utility recoveries, parking rent and storage rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same. Non-residential leases generally have five to ten year lease terms with market-based renewal options and consist of ground floor retail spaces and master-leased parking garages that serve as additional amenities for our residents. The majority of the Company’s revenue is derived from residential, non-residential and other lease income. Our revenue streams have the same timing and pattern of revenue recognition across our reportable segments, with consistent allocations between the lease and revenue recognition standards. The Company elected an accounting policy to account for both its lease and non-lease components (specifically common area maintenance charges) as a single lease component under the lease standard. The Company is a lessor for its residential and non-residential leases and is a lessee for its corporate headquarters and regional offices and ground leases for land underlying current operating properties or projects under development. If applicable, lease agreements must be evaluated to determine the accounting treatment as a finance or operating lease in accordance with the lease standard. The lease standard also requires lessees to recognize on the balance sheet: (a) a liability for the lease obligation (initially measured at the present value of the future lease payments not yet paid over the lease term); and (b) an asset for its right to use the underlying asset (initially equal to the lease liability). The Company uses estimates and judgments on the discount rate used to calculate the present value of the future lease payments. The Company uses its incremental borrowing rate as the discount rate because the Company typically cannot readily determine the rate implicit in the lease. Since the Company’s credit backs the corporate office lease obligations and the lease terms are generally ten years or less, the discount rate range was estimated by using the Company’s borrowing rates for actual pricing data. The discount rate range for ground leases takes into account various factors, including the longer life of the ground leases, and was estimated by using the Company’s borrowing rates for actual pricing data through 30 years and other long-term market rates. The Company’s income streams that are not accounted for under the lease standard include: • Parking revenue – The Company’s parking revenue, not related to leasing, is derived primarily from monthly and transient daily parking and is accounted for at the point in time when control of the goods or services transfers to the customer and our performance obligation is satisfied. • Other rental and non-rental related revenue – The Company receives other income, including, but not limited to: (a) ancillary income, such as laundry, renters insurance and cable income; and (b) miscellaneous fee income. • Fee and asset management revenue and interest income – The Company’s fee and asset management revenue and interest income are recorded on an accrual basis. • Gains or losses on sales of real estate properties – The Company accounts for the sale of real estate properties and any related gain recognition in accordance with the accounting guidance applicable to sales of real estate, which establishes standards for recognition of profit on all real estate sales transactions. The Company recognizes the sale and associated gain or loss from the disposition when control transfers to unrelated third parties, contingencies have been removed and sufficient cash consideration has been received by the Company. See Note 8 for the Company’s rental income detail allocated between the lease and revenue recognition standards. The Company’s allowance for doubtful accounts (which offsets accounts receivable and is included within other assets on the consolidated balance sheets) and bad debts (which reduce rental income on the consolidated statements of operations and comprehensive income) have historically been very modest, particularly in our residential business, given the quality of our resident base and asset class. However, due to the impact of the novel coronavirus (“COVID-19”) pandemic and extended eviction moratoriums enacted during the pandemic, the allowance for doubtful accounts and bad debts were elevated in 2021, 2022 and 2023, though gradually declined throughout 2023. In accordance with the lease standard, if we determine the lease payments are not probable of collection (based on known troubled accounts, rent deferral plans granted, historical experience and other currently available evidence), we fully reserve for any unpaid amounts, deferred rent receivable, variable lease payments and straight-line receivable balances and recognize rental income only if cash is received. If we later determine that these lease payments are probable of collection (based on sustained clean payment history, no deferral plans granted and other currently available evidence), we will no longer fully reserve for the respective current receivable balances, we will reinstate the straight-line balances for the respective leases and we will no longer recognize rental income only if cash is received. If the Company’s estimates of collectibility differ from the cash received, then the timing and amount of the Company’s reported revenue could be impacted. See Note 8 for additional details.
Share-Based Compensation	Share-Based Compensation The Company expenses share-based compensation for employee and trustee grants of restricted shares, restricted units and share options. Any common share of beneficial interest, $ 0.01 par value per share (the “Common Shares”), issued pursuant to EQR’s incentive equity compensation and employee share purchase plans will result in ERPOP issuing units of partnership interest (“OP Units”) to EQR on a one-for-one basis, with ERPOP receiving the net cash proceeds of such issuances. See Note 12 for further discussion.
Income and Other Taxes	Income and Other Taxes EQR has elected to be taxed as a REIT. This, along with the nature of the operations of its operating properties, resulted in no provision for federal income taxes at the EQR level. In addition, ERPOP generally is not liable for federal income taxes as the partners recognize their allocable share of income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level. Historically, the Company has generally only incurred certain state and local income, excise and franchise taxes. The Company has elected taxable REIT subsidiary status for certain of its corporate subsidiaries and, as a result, these entities will incur both federal and state income taxes on any taxable income of such entities after consideration of any net operating losses. The Company’s provision for income and other tax expense (benefit) was as follows for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, 2023 2022 2021 State and local income, franchise and excise tax (benefit) $ 1,148 $ 900 $ 915 Income and other tax expense (benefit) (1) $ 1,148 $ 900 $ 915 (1) All provisions for income tax amounts are current and none are deferred. During the years ended December 31, 2023, 2022 and 2021, the tax character of the Company’s dividends and distributions were as follows: Year Ended December 31, 2023 (1) 2022 (2) 2021 (3) Tax character of dividends and distributions: Ordinary dividends $ 1.85676 $ 1.75466 $ 1.40791 Long-term capital gain 0.57857 0.42850 0.73687 Unrecaptured section 1250 gain 0.17717 0.29434 0.26522 Dividends and distributions per Common Share/Unit outstanding $ 2.61250 $ 2.47750 $ 2.41000 (1) The Company’s fourth quarter 2023 dividends and distributions of $ 0.6625 per Common Share/Unit outstanding will be included as taxable income in calendar year 2024. (2) The Company’s fourth quarter 2022 dividends and distributions of $ 0.625 per Common Share/Unit outstanding was included as taxable income in calendar year 2023. (3) The Company’s fourth quarter 2021 dividends and distributions of $ 0.6025 per Common Share/Unit outstanding was included as taxable income in calendar year 2022. The Company issued Internal Revenue Service (“IRS”) Form 1099-DIV to shareholders to report the tax character of Company distributions consistent with these amounts. The Company provides additional information to assist shareholders in the preparation of their tax returns. For 2023, the Company reported an Alternative Minimum Tax ("AMT") preference adjustment equal to $ 0.01 per share a nd disclosed amounts defined under Treasury Regulation §1.1061-6(c) as “One Year Amounts Disclosure” and “Three Year Amounts Disclosure” equal to $ 0.04101 per share and $ 0.04071 per share, resp ectively.
Principals of Consolidation	Principles of Consolidation The Company may hold an interest in subsidiaries, partnerships, joint ventures and other similar entities and accounts for these interests in accordance with the consolidation guidance. The Company first determines whether to consolidate the entity as a variable interest entity (“VIE”) or voting interest entity, or to account for the interest under the equity method of accounting as an unconsolidated entity. In situations in which we have concluded that an entity qualifies as a VIE, it is generally because the equity investors of VIEs do not have sufficient equity at risk to finance their activities without additional subordinated financial support or do not have substantive voting rights. The Company consolidates an entity when it is considered to be the primary beneficiary of the VIE or when it controls the entity through ownership of a majority voting interest. A primary beneficiary has the power to direct the activities that most significantly impact the VIE’s performance and has the obligation to absorb the expected losses or the right to receive the expected residual returns that could potentially be significant to the VIE. In evaluating whether the entity is a VIE and/or the Company is the primary beneficiary of the entity, the Company considers several factors, including, but not limited to, proportionate share or ownership of the VIE, funding and financing sources, the business purpose of the entity, related parties, developer and property management fees and agreement terms regarding major decisions, participating and voting rights, contributions and distributions.
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities The Company accounts for investments in unconsolidated entities under the equity method of accounting and measures the investments initially at cost. The Company subsequently adjusts the carrying amount by additional cash and non-cash contributions and distributions and its proportionate share of the earnings and losses of such entities. The proportionate share of the earnings and losses are also recognized in the consolidated statements of operations and comprehensive income. In addition, we may earn fees for providing property management services or construction oversight.
Noncontrolling Interests	Noncontrolling Interests A noncontrolling interest in a subsidiary (minority interest) is an ownership interest in the consolidated entity that should be reported as equity in the consolidated financial statements and separate from the parent company’s equity. In addition, consolidated net income is required to be reported at amounts that include the amounts attributable to both the parent and the noncontrolling interest and the amount of consolidated net income attributable to the parent and the noncontrolling interest are required to be disclosed on the face of the consolidated statements of operations and comprehensive income. See Note 3 for further discussion. Operating Partnership: Net income is allocated to noncontrolling interests based on their respective ownership percentage of the Operating Partnership. The ownership percentage is calculated by dividing the number of OP Units held by the noncontrolling interests by the total OP Units held by the noncontrolling interests and EQR. Issuances and retirements of Common Shares and OP Units changes the ownership interests of both the noncontrolling interests and EQR. Such transactions and the related proceeds/payments are treated as capital transactions. Partially Owned Properties: The Company reflects noncontrolling interests in partially owned properties on the balance sheet for the portion of properties consolidated by the Company that are not wholly owned by the Company. The earnings or losses from those properties attributable to the noncontrolling interests are generally based on ownership percentage and are reflected as noncontrolling interests in partially owned properties in the consolidated statements of operations and comprehensive income. Partners’ Capital The “Limited Partners” of ERPOP include various individuals and entities that contributed their properties to ERPOP in exchange for OP Units. The “General Partner” of ERPOP is EQR. Net income is allocated to the Limited Partners based on their respective ownership percentage of ERPOP. The ownership percentage is calculated by dividing the number of OP Units held by the Limited Partners by the total OP Units held by the Limited Partners and the General Partner. Issuances and retirements of Common Shares and OP Units changes the ownership interests of both the Limited Partners and EQR. Such transactions and the related proceeds/payments are treated as capital transactions. Redeemable Noncontrolling Interests – Operating Partnership / Redeemable Limited Partners The Company classifies Redeemable Noncontrolling Interests – Operating Partnership / Redeemable Limited Partners in the mezzanine section of the consolidated balance sheets for the portion of OP Units that EQR is required, either by contract or securities law, to deliver registered Common Shares to the exchanging OP Unit holder. The redeemable noncontrolling interest units / redeemable limited partner units are adjusted to the greater of carrying value or fair market value based on the Common Share price of EQR at the end of each respective reporting period. See Note 3 for further discussion.
Use of Estimates	Use of Estimates In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued an amendment to the income tax standards which requires disclosure enhancements and further transparency to certain income tax disclosures, most notably the tax rate reconciliation and income taxes paid. The new standard will be effective for annual periods beginning January 1, 2025 and will be applied on a prospective basis with the option to apply the standard retrospectively. The Company is currently evaluating the impact of adopting the standard on its consolidated results of operations and financial position. In November 2023, the FASB issued an amendment to the segment reporting standards which requires disclosure for each reportable segment, on an interim and annual basis, the significant expense categories and amounts that are regularly provided to the chief operating decision maker and included in each reported measure of a segment’s profit or loss. Additionally, it requires a disclosure of the title and position of the individual or the name of the group or committee identified as the chief operating decision maker. The new standard will be effective for annual periods beginning on January 1, 2024 and interim periods beginning on January 1, 2025 on a retrospective basis. The Company is currently evaluating the impact of adopting the standard on its consolidated results of operations and financial position. In August 2020, the FASB issued an amendment to the debt and equity financial instruments standards which simplifies the accounting for convertible instruments and accounting for contracts in an entity’s own equity. The Company adopted the standard when effective on January 1, 2022 and it had no impact on its consolidated results of operations and financial position. In March 2020, the FASB issued an amendment to the reference rate reform standard which provides the option for a limited period of time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on contract modifications and hedge accounting. The new standard was effective for the Company upon issuance and elections could be made through December 31, 2024. The Company elected to apply the hedge accounting expedients and application of these expedients preserves the presentation of derivatives consistent with past presentation. The Company continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.
Other	Other The Company is the controlling partner in various consolidated partnerships ow ning 14 properties consisting of 3,060 ap artment units having a noncontrolling interest balance of $ 1.0 million at December 31, 2023 . The Company is required to make certain disclosures regarding noncontrolling interests in consolidated limited-life subsidiaries. Of the consolidated entities described above, the Company is the controlling partner in limited-life partnerships owning two properties having a noncontrolling interest deficit balance of $ 3.5 million. These two partnership agreements contain provisions that require the partnerships to be liquidated through the sale of their assets upon reaching a date specified in each respective partnership agreement. The Company, as controlling partner, has an obligation to cause the property owning partnerships to distribute the proceeds of liquidation to the Noncontrolling Interests in these Partially Owned Properties only to the extent that the net proceeds received by the partnerships from the sale of their assets warrant a distribution based on the partnership agreements. As of December 31, 2023, the Company estimates the value of Noncontrolling Interest distributions for these two properties would have been approximately $ 49.1 million (“Settlement Value”) had the partnerships been liquidated. This Settlement Value is based on estimated third-party consideration realized by the partnerships upon disposition of the two Partially Owned Properties and is net of all other assets and liabilities, including yield maintenance on the mortgages encumbering the properties, that would have been due on December 31, 2023 had those mortgages been prepaid. Due to, among other things, the inherent uncertainty in the sale of real estate assets, the amount of any potential distribution to the Noncontrolling Interests in the Company’s Partially Owned Properties is subject to change. To the extent that the partnerships’ underlying assets are worth less than the underlying liabilities, the Company has no obligation to remit any consideration to the Noncontrolling Interests in these Partially Owned Properties.

Business (Tables)

Business (Tables)	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Ownership Breakdown	The ownership breakdown includes (table does not include any uncompleted development properties): Properties Apartment Units Wholly Owned Properties 288 77,131 Partially Owned Properties – Consolidated 14 3,060 302 80,191

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2023
Summary Of Significant Accounting Policies [Abstract]
Allocation Of Income Franchise And Excise Taxes In Consolidated Statements Of Operations	The Company’s provision for income and other tax expense (benefit) was as follows for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, 2023 2022 2021 State and local income, franchise and excise tax (benefit) $ 1,148 $ 900 $ 915 Income and other tax expense (benefit) (1) $ 1,148 $ 900 $ 915 (1) All provisions for income tax amounts are current and none are deferred.
Tax Treatment Of Dividends And Distributions	During the years ended December 31, 2023, 2022 and 2021, the tax character of the Company’s dividends and distributions were as follows: Year Ended December 31, 2023 (1) 2022 (2) 2021 (3) Tax character of dividends and distributions: Ordinary dividends $ 1.85676 $ 1.75466 $ 1.40791 Long-term capital gain 0.57857 0.42850 0.73687 Unrecaptured section 1250 gain 0.17717 0.29434 0.26522 Dividends and distributions per Common Share/Unit outstanding $ 2.61250 $ 2.47750 $ 2.41000 (1) The Company’s fourth quarter 2023 dividends and distributions of $ 0.6625 per Common Share/Unit outstanding will be included as taxable income in calendar year 2024. (2) The Company’s fourth quarter 2022 dividends and distributions of $ 0.625 per Common Share/Unit outstanding was included as taxable income in calendar year 2023. (3) The Company’s fourth quarter 2021 dividends and distributions of $ 0.6025 per Common Share/Unit outstanding was included as taxable income in calendar year 2022.

Equity, Capital and Other Int_2

Equity, Capital and Other Interests (Tables)	12 Months Ended
	Dec. 31, 2023
Class Of Stock [Line Items]
Changes in Issued and Outstanding Common Shares and Units	The following table presents the changes in the Company’s issued and outstanding Common Shares and Units for the years ended December 31, 2023, 2022 and 2021: 2023 2022 2021 Common Shares Common Shares outstanding at January 1, 378,429,708 375,527,195 372,302,000 Common Shares Issued: Conversion of OP Units 1,013,795 452,532 1,354,208 Issuance of Common Shares — 1,740,550 — Exercise of share options 495,690 468,021 1,710,692 Employee Share Purchase Plan (ESPP) 68,136 66,835 70,702 Restricted share grants, net 148,474 174,575 89,593 Common Shares Other: Repurchased and retired ( 864,386 ) — — Common Shares outstanding at December 31, 379,291,417 378,429,708 375,527,195 Units Units outstanding at January 1, 12,429,737 12,659,027 13,858,073 Restricted unit grants, net 165,364 223,242 155,162 Conversion of OP Units to Common Shares ( 1,013,795 ) ( 452,532 ) ( 1,354,208 ) Units outstanding at December 31, 11,581,306 12,429,737 12,659,027 Total Common Shares and Units outstanding at December 31, 390,872,723 390,859,445 388,186,222 Units Ownership Interest in Operating Partnership 3.0 % 3.2 % 3.3 %
Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	he following table presents the changes in the redemption value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): 2023 2022 2021 Balance at January 1, $ 318,273 $ 498,977 $ 338,951 Change in market value ( 7,667 ) ( 176,490 ) 158,598 Change in carrying value ( 21,358 ) ( 4,214 ) 1,428 Balance at December 31, $ 289,248 $ 318,273 $ 498,977
Issued and Outstanding Preferred Shares and Preference Units	The following table presents the Company’s issued and outstanding Preferred Shares/Preference Units as of December 31, 2023 and 2022: Amounts in thousands Annual Call Dividend Per December 31, December 31, Date (1) Share/Unit (2) 2023 2022 Preferred Shares/Preference Units of beneficial interest, $ 0.01 par value; 100,000,000 shares authorized: 8.29 % Series K Cumulative Redeemable Preferred Shares/Preference 50 per share/unit; 745,600 shares/units issued 12/10/2026 $ 4.145 $ 37,280 $ 37,280 $ 37,280 $ 37,280 (1) On or after the call date, redeemable Preferred Shares/Preference Units may be redeemed for cash at the option of the Company or the Operating Partnership, respectively, in whole or in part, at a redemption price equal to the liquidation price per share/unit, plus accrued and unpaid distributions, if any. (2) Dividends on Preferred Shares/Preference Units are payable quarterly.
ERPOP [Member]
Class Of Stock [Line Items]
Changes in Issued and Outstanding Common Shares and Units	The following table presents the changes in the Operating Partnership’s issued and outstanding General Partner Units and Limited Partner Units for the years ended December 31, 2023, 2022 and 2021: 2023 2022 2021 General and Limited Partner Units General and Limited Partner Units outstanding at January 1, 390,859,445 388,186,222 386,160,073 Issued to General Partner: Issuance of OP Units — 1,740,550 — Exercise of EQR share options 495,690 468,021 1,710,692 EQR’s Employee Share Purchase Plan (ESPP) 68,136 66,835 70,702 EQR’s restricted share grants, net 148,474 174,575 89,593 Issued to Limited Partners: Restricted unit grants, net 165,364 223,242 155,162 General Partner Other: OP Units repurchased and retired ( 864,386 ) — — General and Limited Partner Units outstanding at December 31, 390,872,723 390,859,445 388,186,222 Limited Partner Units Limited Partner Units outstanding at January 1, 12,429,737 12,659,027 13,858,073 Limited Partner restricted unit grants, net 165,364 223,242 155,162 Conversion of Limited Partner OP Units to EQR Common Shares ( 1,013,795 ) ( 452,532 ) ( 1,354,208 ) Limited Partner Units outstanding at December 31, 11,581,306 12,429,737 12,659,027 Limited Partner Units Ownership Interest in Operating Partnership 3.0 % 3.2 % 3.3 %

Real Estate (Tables)

Real Estate (Tables)	12 Months Ended
	Dec. 31, 2023
Real Estate [Abstract]
Summary of Carrying Amounts of Investment in Real Estate	The following table summarizes the carrying amounts for the Company’s investment in real estate (at cost) as of December 31, 2023 and 2022 (amounts in thousands): 2023 2022 Land $ 5,581,876 $ 5,580,878 Depreciable property: Buildings and improvements 19,809,432 19,471,503 Furniture, fixtures and equipment 2,609,600 2,352,050 In-Place lease intangibles 519,394 510,816 Projects under development: Land 3,201 3,201 Construction-in-progress 74,835 109,739 Land held for development: Land 82,026 46,160 Construction-in-progress 32,274 14,407 Investment in real estate 28,712,638 28,088,754 Accumulated depreciation ( 9,810,337 ) ( 9,027,850 ) Investment in real estate, net $ 18,902,301 $ 19,060,904
Acquired Properties From Unaffiliated Parties	During the year ended December 31, 2023, the Company acquired the following from unaffiliated parties (purchase price and purchase price allocation in thousands): Purchase Price Allocation (1), (2) Properties Apartment Units Purchase Price (1) Land Depreciable Property Rental Properties – Consolidated 4 1,183 $ 366,334 $ 41,142 $ 325,611 Total 4 1,183 $ 366,334 $ 41,142 $ 325,611 (1) Purchase price and purchase price allocation are both net of a mark-to-market discount of approximately $ 11.2 million on a mortgage assumed (2) Purchase price allocation includes capitalized closing costs. During the year ended December 31, 2022, the Company acquired the following from unaffiliated parties (purchase price and purchase price allocation in thousands): Purchase Price Allocation (1) Properties Apartment Units Purchase Price Land Depreciable Property Rental Properties – Consolidated 1 172 $ 113,000 $ 25,361 $ 87,685 Total 1 172 $ 113,000 $ 25,361 $ 87,685 (1) Purchase price allocation includes capitalized closing costs.
Disposed Properties to Unaffiliated Parties	During the year ended December 31, 2023, the Company disposed of the following to unaffiliated parties (sales price and net gain in thousands): Properties Apartment Units Sales Price Net Gain Rental Properties – Consolidated 11 912 $ 379,893 $ 282,539 Total 11 912 $ 379,893 $ 282,539 During the year ended December 31, 2022, the Company disposed of the following to unaffiliated parties (sales price and net gain in thousands): Properties Apartment Units Sales Price Net Gain Rental Properties – Consolidated 3 945 $ 746,150 $ 304,325 Total 3 945 $ 746,150 $ 304,325

Commitments to Acquire_Dispos_2

Commitments to Acquire/Dispose of Real Estate (Tables)	12 Months Ended
	Dec. 31, 2023
Commitments To Acquire Dispose Of Real Estate [Abstract]
Summary of Agreement to Dispose	The Company has entered into an agreement to dispose of the following (sales price and net book value in thousands): Properties Apartment Units Sales Price Net Book Value at December 31, 2023 Rental Properties – Consolidated 2 300 $ 80,000 $ 70,533 Total 2 300 $ 80,000 $ 70,533

Investments in Partially Owne_2

Investments in Partially Owned Entities (Tables)	12 Months Ended
	Dec. 31, 2023
Investments In Partially Owned Entities [Abstract]
Summary of Company's Consolidated Joint Ventures	The following table summarizes the Company’s consolidated joint ventures as of December 31, 2023 and 2022: Operating Properties (1) Projects Under Development (2), (3) Projects Held for Development (3), (4) Properties Apartment Units Projects Apartment Units (5) Projects Apartment Units (5) 2023 Consolidated Joint Ventures (VIE) 14 3,060 — — 1 440 2022 Consolidated Joint Ventures (VIE) 15 3,114 1 312 — — (1) The land parcel under one of the properties in 2023 is subject to a long-term ground lease. (2) The land parcel under this project is subject to a long-term ground lease. (3) Represents separate consolidated joint ventures for the purpose of developing multifamily rental properties. (4) Represents separate consolidated joint ventures that have not yet started. (5) Represents the intended number of apartment units to be developed.
Summary of Consolidated Assets and Liabilities Related to the Company's VIEs	The following table provides consolidated assets and liabilities related to the Company's VIEs as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Consolidated Assets $ 599,788 $ 691,880 Consolidated Liabilities $ 41,153 $ 158,932
Summary of Variable Rate Construction Mortgage Debt	The following table and information summarizes the variable rate construction mortgage debt that was non-recourse to the Company at December 31, 2022 (there was no outstanding consolidated construction mortgage debt at December 31, 2023) (aggregate and amounts borrowed under loan commitments in thousands): December 31, 2022 Recently Completed Operating Property Project Under Development Number of joint ventures with debt financing 1 1 Aggregate loan commitments $ 67,589 $ 73,344 Amounts borrowed under loan commitments (1) $ 64,776 $ 44,980 (1) See Note 9 for the proceeds of secured conventional floating rate debt under Mortgage Notes Payable .
Summary of Company's Investment in Unconsolidated Entities	The following table and information summarizes the Company’s investments in unconsolidated entities as of December 31, 2023 and 2022 (amounts in thousands except for ownership percentage): December 31, 2023 December 31, 2022 Ownership Percentage Investments in Unconsolidated Entities: Various Real Estate Holdings (VIE) $ 35,421 $ 35,974 Varies Projects Under Development and Land Held for Development (VIE) 220,192 218,043 62 % - 95 % (1) Real Estate Technology Funds/Companies (VIE) 26,691 25,249 Varies Other ( 255 ) ( 242 ) Varies Investments in Unconsolidated Entities $ 282,049 $ 279,024 (1) In certain instances, the joint venture agreements contain provisions for promoted interests in favor of our joint venture partner. If the terms of the promoted interest are attained, then our share of the proceeds from a sale or other capital event of the unconsolidated entity may be less than the indicated ownership percentage.
Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs	The following table summarizes the Company’s unconsolidated joint ventures that were deemed to be VIEs as of December 31, 2023 and 2022: Real Estate Holdings (1) Projects Under Development (2), (5) Projects Held for Development (2), (3) Entities Projects Apartment Units (4) Projects Apartment Units (4) 2023 Unconsolidated Joint Ventures (VIE) 3 6 1,982 4 1,164 2022 Unconsolidated Joint Ventures (VIE) 2 6 1,982 3 966 (1) Represents entities that hold various real estate investments. (2) Represents separate unconsolidated joint ventures for the purpose of developing multifamily rental properties. (3) Represents separate unconsolidated joint ventures that have not yet started. (4) Represents the intended number of apartment units to be developed. (5) The land parcel under one of the projects is subject to a long-term ground lease.
Summary of Information on Total Unconsolidated Development Joint Ventures	The following table provides information on total unconsolidated development joint ventures entered into during the years ended December 31, 2023 and 2022 (amounts in thousands except for number of unconsolidated joint ventures and apartment units): December 31, 2023 December 31, 2022 Number of unconsolidated joint ventures (1) 2 3 Apartment units (2) 638 1,019 Investments in unconsolidated entities – acquisitions $ 2,800 $ 49,855 (1) The entities qualify as VIEs, but the Company is not the primary beneficiary because it does not have the power to direct the activities that most significantly impact the VIE’s performance. Therefore, the entities are unconsolidated and recorded using the equity method of accounting. See Note 2 for additional discussion. (2) Represents the intended number of apartment units to be developed.

Restricted Deposits (Tables)

Restricted Deposits (Tables)	12 Months Ended
	Dec. 31, 2023
Deposits Restricted [Abstract]
Restricted Deposits	The following table presents the Company’s restricted deposits as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Mortgage escrow deposits: Real estate taxes and insurance $ 307 $ — Mortgage principal reserves/sinking funds 29,270 25,304 Mortgage escrow deposits 29,577 25,304 Restricted cash: Earnest money on pending acquisitions 524 4,500 Restricted deposits on real estate investments 2,181 229 Resident security and utility deposits 40,149 38,432 Replacement reserves 15,571 12,549 Other 1,250 2,289 Restricted cash 59,675 57,999 Restricted deposits $ 89,252 $ 83,303

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income	The following table presents the lease income types relating to lease payments for residential and non-residential leases along with the total other rental income for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Income Type Residential Non-Residential Total Residential Non-Residential Total Residential Non-Residential Total Residential and non-residential rent $ 2,578,565 $ 62,193 $ 2,640,758 $ 2,446,516 $ 63,995 $ 2,510,511 $ 2,202,133 $ 61,033 $ 2,263,166 Utility recoveries (RUBS income) (1) 86,628 906 87,534 81,140 844 81,984 74,846 723 75,569 Parking rent 44,081 449 44,530 43,335 435 43,770 40,934 565 41,499 Other lease revenue (2) ( 25,095 ) ( 142 ) ( 25,237 ) ( 12,637 ) ( 69 ) ( 12,706 ) ( 17,667 ) 4,027 ( 13,640 ) Total lease revenue $ 2,684,179 $ 63,406 2,747,585 $ 2,558,354 $ 65,205 2,623,559 $ 2,300,246 $ 66,348 2,366,594 Parking revenue 40,836 37,338 26,789 Other revenue 85,543 74,283 70,614 Total other rental income (3) 126,379 111,621 97,403 Rental income $ 2,873,964 $ 2,735,180 $ 2,463,997 (1) RUBS income primarily consists of variable payments representing the recovery of utility costs from residents. (2) Other lease revenue consists of the revenue adjustment related to bad debt (see below for further discussion) and other miscellaneous lease revenue. (3) Other rental income is accounted for under the revenue recognition standard and primarily consists of third-party transient parking revenue and ancillary income such as cable and laundry revenue.
Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances	The following table presents residential and non-residential accounts receivable and straight-line receivable balances for the Company’s properties as of December 31, 2023 and 2022 (amounts in thousands): Residential Non-Residential Balance Sheet (Other assets): December 31, 2023 December 31, 2022 December 31, 2023 December 31, 2022 Resident/tenant accounts receivable balances $ 21,477 $ 35,688 $ 2,822 $ 2,820 Allowance for doubtful accounts ( 15,846 ) ( 31,405 ) ( 1,849 ) ( 2,152 ) Net receivable balances $ 5,631 $ 4,283 $ 973 $ 668 Straight-line receivable balances $ 9,183 $ 4,398 $ 11,915 (1) $ 13,795 (1) During the year ended December 31, 2023, the Company recorded a non-cash write-off of approximately $ 1.5 million in straight-line receivables due to the bankruptcy of Rite Aid.
Summary of Residential Bad Debt for Company's Properties	The following table presents residential bad debt for the Company’s properties for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended December 31, Income Statement (Rental income): 2023 2022 2021 Bad debt, net (1) $ 38,117 $ 26,570 $ 31,485 % of residential rental income 1.4 % 1.0 % 1.3 % (1) Bad debt, net benefited from additional resident payments due to governmental rental assistance programs of approximately $ 2.8 million , $ 34.7 million and $ 34.8 million for the years ended December 31, 2023, 2022 and 2021, respectively .
Summary of Right-of-Use Assets and Related Lease Liabilities	The following table presents the Company’s ROU assets and related lease liabilities as of December 31, 2023 and 2022 (amounts in thousands): 2023 2022 Right-of-use assets: Corporate office leases (operating) $ 38,745 $ 34,767 Ground leases (finance) 94,091 95,834 Ground leases (operating) 324,430 332,355 Right-of-use assets $ 457,266 $ 462,956 Lease liabilities: Corporate office leases (operating) $ 40,485 $ 35,747 Ground leases (finance) 68,143 68,919 Ground leases (operating) 203,012 204,082 Lease liabilities $ 311,640 $ 308,748
Summary of Quantitative Disclosures for Lessees	The following tables illustrate the quantitative disclosures for lessees as of and for the years ended December 31, 2023, 2022 and 2021 (amounts in thousands): Year Ended Year Ended Year Ended Lease cost: Finance lease cost: Amortization of right-of-use assets (capitalized) $ 146 $ 351 $ 351 Amortization of right-of-use assets (expensed) 1,781 1,391 1,391 Interest on lease liabilities (capitalized) — — 452 Interest on lease liabilities (expensed) 1,886 1,904 1,464 Operating lease cost: Corporate office leases 4,738 4,061 3,581 Ground leases 18,338 18,338 18,338 Variable lease cost: Corporate office leases 599 430 1,037 Ground leases 4,338 4,342 2,973 Total lease cost $ 31,826 $ 30,817 $ 29,587 December 31, 2023 December 31, 2022 December 31, 2021 Other information: Cash paid for amounts included in the measurement of Investing cash flows from finance leases $ — $ — $ 383 Financing cash flows from finance leases $ 2,847 $ 2,463 $ 1,898 Operating cash flows from operating leases: Corporate office leases $ 4,576 $ 4,385 $ 5,016 Ground leases $ 15,911 $ 15,037 $ 14,682 Weighted-average remaining lease term – finance leases 23.1 years 24.1 years 25.2 years Weighted-average remaining lease term – operating leases: Corporate office leases 17.7 years 16.1 years 16.8 years Ground leases 60.7 years 61.2 years 61.8 years Weighted-average discount rate – finance leases 2.8 % 2.8 % 2.8 % Weighted-average discount rate – operating leases: Corporate office leases 4.3 % 3.2 % 3.2 % Ground leases 5.1 % 5.1 % 5.1 %
Summary of Undiscounted Cash Flows for Contractual Obligations for Minimum Rent Payments/Receipts	The following table summarizes the Company’s undiscounted cash flows for contractual obligations for minimum rent payments/receipts under operating and financing leases for the next five years and thereafter as of December 31, 2023: (Payments)/Receipts Due by Year (in thousands) 2024 2025 2026 2027 2028 Thereafter Total Finance Leases: Minimum Rent Payments (a) $ ( 2,881 ) $ ( 2,946 ) $ ( 2,959 ) $ ( 2,971 ) $ ( 2,984 ) $ ( 82,253 ) $ ( 96,994 ) Operating Leases: Minimum Rent Payments (a) $ ( 15,797 ) $ ( 16,028 ) $ ( 15,881 ) $ ( 15,984 ) $ ( 16,132 ) $ ( 806,155 ) $ ( 885,977 ) Minimum Rent Receipts (b) $ 53,000 $ 48,410 $ 44,582 $ 40,771 $ 34,709 $ 112,720 $ 334,192 (a) Minimum basic rent due for corporate office leases and base rent due on ground leases where the Company is the lessee. (b) Minimum basic rent receipts due for various non-residential space where the Company is the lessor. Excludes residential leases due to their short-term nature.
Summary of Reconciliation of Lease Liabilities	The following table provides a reconciliation of lease liabilities from our undiscounted cash flows for minimum rent payments as of December 31, 2023 (amounts in thousands): 2023 Total minimum rent payments $ 982,971 Less: Lease discount ( 671,331 ) Lease liabilities $ 311,640

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Instrument [Line Items]
Summary of Mortgage Notes Payable Activity	The following tables summarize the Company’s mortgage notes payable activity for the years ended December 31, 2023 and 2022, respectively (amounts in thousands): Mortgage notes Proceeds Assumptions Lump sum Scheduled Amortization Amortization Mortgage notes Fixed Rate Debt: Secured – Conventional $ 1,608,838 $ 550,000 (2) $ 42,256 (3) $ ( 800,000 ) (2) $ — $ 601 $ ( 3,097 ) $ 1,398,598 Floating Rate Debt: Secured – Conventional 108,378 22,896 — ( 132,598 ) ( 54 ) — 1,378 — Secured – Tax Exempt 236,222 — — — ( 3,300 ) 1,242 140 234,304 Floating Rate Debt 344,600 22,896 — ( 132,598 ) ( 3,354 ) 1,242 1,518 234,304 Total $ 1,953,438 $ 572,896 $ 42,256 $ ( 932,598 ) $ ( 3,354 ) $ 1,843 $ ( 1,579 ) $ 1,632,902 (1) Represents amortization of deferred financing costs, net of debt financing costs. (2) Obtained $ 200.0 million of 5.18 % fixed rate mortgage debt maturing in September 2033 and $ 350.0 million of 5.25 % fixed rate mortgage debt maturing in September 2033 . The secured notes totaling $ 550.0 million have an all-in effective interest rate of approximately 4.7 %. The proceeds from these loans were used, along with funding from the Company’s commercial paper note program, to repay $ 800.0 million of 4.21 % fixed rate mortgage debt that was due to mature in November 2023 . (3) Assumed $ 53.5 million of 2.24 % fixed rate mortgage debt maturing in September 2030 on one acquired property and recorded an initial discount of approximately $ 11.2 million. Mortgage notes Proceeds Lump sum Scheduled Amortization Amortization Mortgage notes Fixed Rate Debt: Secured – Conventional $ 1,896,472 $ — $ ( 286,461 ) $ ( 3,311 ) $ 941 $ 1,197 $ 1,608,838 Floating Rate Debt: Secured – Conventional 59,890 48,054 (2) — ( 81 ) — 515 108,378 Secured – Tax Exempt 234,839 — — — 1,243 140 236,222 Floating Rate Debt 294,729 48,054 — ( 81 ) 1,243 655 344,600 Total $ 2,191,201 $ 48,054 $ ( 286,461 ) $ ( 3,392 ) $ 2,184 $ 1,852 $ 1,953,438 (1) Represents amortization of deferred financing costs, net of debt financing costs. (2) See Note 6 for additional discussion of the variable rate construction mortgage debt.
Summary of Notes Activity	The following tables summarize the Company’s notes activity for the years ended December 31, 2023 and 2022, respectively (amounts in thousands): Notes, net as of Proceeds Lump sum Amortization Amortization Notes, net as of Fixed Rate Debt: Unsecured – Public $ 5,342,329 $ — $ — $ 2,248 $ 3,840 $ 5,348,417 (1) Represents amortization of deferred financing costs, net of debt financing costs. Notes, net as of Proceeds Lump sum Amortization Amortization Notes, net as of Fixed Rate Debt: Unsecured – Public $ 5,835,222 $ — $ ( 500,000 ) $ 2,820 $ 4,287 $ 5,342,329 (1) Represents amortization of deferred financing costs, net of debt financing costs.
Schedule of Unsecured Revolving Credit Facility	The following table presents the availability on the Company’s unsecured revolving credit facility as of December 31, 2023 and 2022, respectively (amounts in thousands): December 31, 2023 December 31, 2022 Unsecured revolving credit facility commitment $ 2,500,000 $ 2,500,000 Commercial paper balance outstanding ( 410,000 ) ( 130,000 ) Unsecured revolving credit facility balance outstanding — — Other restricted amounts ( 3,415 ) ( 3,463 ) Unsecured revolving credit facility availability $ 2,086,585 $ 2,366,537
Summary of Debt Extinguishment Costs Recorded as Additional Expense	The following table summarizes the Company’s total debt extinguishment costs recorded as additional expense for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): December 31, 2023 December 31, 2022 December 31, 2021 Write-offs of unamortized deferred financing costs $ 1,143 $ 717 $ 744 Write-offs of unamortized (premiums)/discounts/OCI — 3,947 — Total $ 1,143 $ 4,664 $ 744
Summary of Aggregate Payments of Principal on All Debt	The following table provides a summary of the aggregate payments of principal on all debt for each of the next five years and thereafter as of December 31, 2023 (amounts in thousands): Year Total 2024 (1) $ 416,200 2025 458,100 2026 601,025 2027 409,800 2028 910,700 Thereafter 4,668,832 Subtotal 7,464,657 Deferred Financing Costs and Unamortized (Discount) ( 74,207 ) Total $ 7,390,450 (1) Includes $ 410.0 million in principal outstanding on the Company’s commercial paper program.
Mortgages [Member]
Debt Instrument [Line Items]
Summary of Certain Interest Rate and Maturity Date Information	The following table summarizes certain interest rate and maturity date information as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Interest Rate Ranges (ending) 0.10 % - 5.25 % 0.10 % - 7.10 % Weighted Average Interest Rate 3.68 % 3.46 % Maturity Date Ranges 2029 - 2061 2023 - 2061
Notes [Member]
Debt Instrument [Line Items]
Summary of Certain Interest Rate and Maturity Date Information	The following table summarizes certain interest rate and maturity date information as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Interest Rate Ranges (ending) 1.85 % - 7.57 % 1.85 % - 7.57 % Weighted Average Interest Rate 3.51 % 3.61 % Maturity Date Ranges 2025 - 2047 2025 - 2047
Commercial Paper [Member]
Debt Instrument [Line Items]
Summary of Certain Interest Rate and Maturity Date Information	The following table summarizes certain weighted average interest rate, maturity and amounts outstanding information for the commercial paper program as of and for the years ended December 31, 2023 and 2022, respectively: December 31, 2023 December 31, 2022 Weighted Average Interest Rate (1) 5.47 % 1.52 % Weighted Average Maturity (in days) 14 4 Weighted Average Amounts Outstanding $ 276.0 million $ 156.1 million (1) The notes bear interest at various floating rates.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Summary of Valuations for Each Type of Fair Value Measurement	The following table summarizes the inputs to the valuations for each type of fair value measurement: Fair Value Measurement Type Valuation Inputs Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”) Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets. Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Quoted market price of Common Shares. Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable) Indicative rates provided by lenders of similar loans. Public unsecured notes Quoted market prices for each underlying issuance. Derivatives Readily observable market parameters such as forward yield curves and credit default swap data.
Summary of Carrying and Fair Values of Financial Instruments	The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at December 31, 2023 and 2022, respectively (amounts in thousands): December 31, 2023 December 31, 2022 Carrying Value Estimated Fair Carrying Value Estimated Fair Mortgage notes payable, net $ 1,632,902 $ 1,509,706 $ 1,953,438 $ 1,803,525 Unsecured debt, net 5,757,548 5,346,488 5,472,284 4,874,490 Total debt, net $ 7,390,450 $ 6,856,194 $ 7,425,722 $ 6,678,015
Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at December 31, 2023 and 2022, respectively (amounts in thousands): Fair Value Measurements at Reporting Date Using Description Balance Sheet 12/31/2023 Quoted Prices in Significant Other Significant Assets Supplemental Executive Retirement Plan Other Assets $ 108,478 $ 108,478 $ — $ — Liabilities Supplemental Executive Retirement Plan Other Liabilities $ 108,478 $ 108,478 $ — $ — Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Mezzanine $ 289,248 $ — $ 289,248 $ — Fair Value Measurements at Reporting Date Using Description Balance Sheet 12/31/2022 Quoted Prices in Significant Other Significant Assets Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps Other Assets $ 21,864 $ — $ 21,864 $ — Supplemental Executive Retirement Plan Other Assets 133,245 133,245 — — Total $ 155,109 $ 133,245 $ 21,864 $ — Liabilities Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps Other Liabilities $ 1,210 $ — $ 1,210 $ — Supplemental Executive Retirement Plan Other Liabilities 133,245 133,245 — — Total $ 134,455 $ 133,245 $ 1,210 $ — Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners Mezzanine $ 318,273 $ — $ 318,273 $ —
Summary of Real Estate Technology Investment Securities included in Other Assets	The following table summarizes the Company’s real estate technology investment securities included in other assets as of December 31, 2023 and 2022 (amounts in thousands): December 31, 2023 December 31, 2022 Real Estate Technology Investments $ 19,312 $ 4,312
Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income	The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): December 31, 2023 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ 4,514 Interest expense $ ( 3,737 ) Total $ 4,514 $ ( 3,737 ) December 31, 2022 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ 20,654 Interest expense $ ( 11,071 ) Total $ 20,654 $ ( 11,071 ) December 31, 2021 Amount of Location of Amount of Derivatives designated as hedging instruments: Interest Rate Contracts: Forward Starting Swaps $ — Interest expense $ ( 9,394 ) Total $ — $ ( 9,394 )

Earnings Per Share and Earnin_2

Earnings Per Share and Earnings Per Unit (Tables)	12 Months Ended
	Dec. 31, 2023
Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit	The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts): Year Ended December 31, 2023 2022 2021 Numerator for net income per share – basic: Net income $ 868,488 $ 806,995 $ 1,396,714 Allocation to Noncontrolling Interests – Operating Partnership ( 26,710 ) ( 26,310 ) ( 45,900 ) Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Preferred distributions ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per share – basic $ 832,348 $ 773,821 $ 1,329,760 Numerator for net income per share – diluted: Net income $ 868,488 $ 806,995 $ 1,396,714 Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Preferred distributions ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per share – diluted $ 859,058 $ 800,131 $ 1,375,660 Denominator for net income per share – basic and diluted: Denominator for net income per share – basic 378,773 376,209 373,833 Effect of dilutive securities: OP Units 11,181 11,836 12,263 Long-term compensation shares/units 943 1,402 1,924 ATM forward sales — 3 69 Denominator for net income per share – diluted 390,897 389,450 388,089 Net income per share – basic $ 2.20 $ 2.06 $ 3.56 Net income per share – diluted $ 2.20 $ 2.05 $ 3.54
ERPOP [Member]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit	The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts): Year Ended December 31, 2023 2022 2021 Numerator for net income per Unit – basic and diluted: Net income $ 868,488 $ 806,995 $ 1,396,714 Net (income) loss attributable to Noncontrolling ( 6,340 ) ( 3,774 ) ( 17,964 ) Allocation to Preference Units ( 3,090 ) ( 3,090 ) ( 3,090 ) Numerator for net income per Unit – basic and diluted $ 859,058 $ 800,131 $ 1,375,660 Denominator for net income per Unit – basic and diluted: Denominator for net income per Unit – basic 389,954 388,045 386,096 Effect of dilutive securities: Dilution for Units issuable upon assumed exercise/vesting 943 1,402 1,924 ATM forward sales — 3 69 Denominator for net income per Unit – diluted 390,897 389,450 388,089 Net income per Unit – basic $ 2.20 $ 2.06 $ 3.56 Net income per Unit – diluted $ 2.20 $ 2.05 $ 3.54

Share Incentive Plans (Tables)

Share Incentive Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Terms of Awards Generally Granted to Employees	The following table summarizes the terms of Awards generally granted to employees: Options Restricted Shares Restricted Units Overview Options exercised after vesting result in issuance of new Common Shares. Restricted shareholders generally have the same voting rights and receive quarterly dividend payments on their shares at the same rate and on the same date as any other Common Share holder (1). When certain conditions are met, restricted units convert into an equal number of OP Units, which the holder may exchange for Common Shares on a one-for-one basis or at the option of the Company the cash value of such shares. Restricted unitholders receive quarterly distribution payments on their restricted units at the same rate and on the same date as any other OP Unit holder (1). Grant/Exercise Granted at the fair market value of Common Shares as of the grant date using the Black-Scholes model as described below. Granted at the fair market value of Common Shares as of the grant date. Granted at varying discount rates to the fair market value of Common Shares as of the grant date (2). Vesting Period In three equal installments over a three-year period from the grant date. Three years from the grant date. Three years from the grant date. Expiration Ten years from the grant date. Not applicable. Ten years from the grant date (2). Upon Employee Unvested options are canceled. Unvested restricted shares are canceled. Unvested restricted units are canceled. (1) Dividends/distributions paid on unvested restricted shares and units are included as a component of retained earnings and Noncontrolling Interest – Operating Partnership/Limited Partners Capital, respectively, and have not been considered in reducing net income available to Common Shares/Units in a manner similar to the Company’s preferred share/preference unit dividends for the earnings per share/Unit calculation. (2) A restricted unit will automatically convert to an OP Unit when the capital account of each restricted unit increases (“books-up”) to a specified target. The probability of a book-up occurring within the ten-year contractual life along with the liquidity risk associated with various hold period restrictions are both reflected in the discount. If the capital target is not attained within ten years following the date of issuance, the restricted unit will automatically be canceled and no compensation will be payable to the holder of such canceled restricted unit. If the capital target is attained and the restricted unit is converted to an OP Unit, it will not expire.
Summary of Valuation Method of Share Options	The fair value of the Option grants is recognized over the requisite service/vesting period of the Options. The fair value for the Company’s Options was estimated at the time the Options were granted using the Black-Scholes option pricing model with the primary grant in each year having the following weighted average assumptions: 2023 2022 2021 Expected volatility (1) 23.8 % 21.7 % 21.3 % Expected life (2) 5 years 5 years 5 years Expected dividend yield (3) 3.30 % 3.26 % 3.23 % Risk-free interest rate (4) 4.04 % 1.66 % 0.50 % Exercise price per share (5) $ 66.59 $ 91.59 $ 67.48 Option valuation per share $ 12.67 $ 12.57 $ 7.96 (1) Expected volatility – Estimated based on the historical five-year volatility (the period matching the expected life) of EQR’s share price measured on a monthly basis. (2) Expected life – Approximates the actual weighted average life of all Options granted since the Company went public in 1993. (3) Expected dividend yield – Calculated by averaging the historical annual yield on EQR shares for a period matching the expected life of each grant, with the annual yield calculated by dividing actual regular dividends (excluding any special dividends) by the average price of EQR’s shares in a given year. (4) Risk-free interest rate – The most current U.S. Treasury rate available at the grant date for a period matching the expected life of each grant. (5) Exercise price per share – The closing share price of the Common Shares on the grant date.
Summary of Weighted Average Fair Value for Each Restricted Share/Unit	The individual prices determined above are then weighted to arrive at the final values for each restricted share/unit as follows: 2023 2022 2021 Weighted average fair value per restricted share $ 61.18 $ 96.84 $ 61.73 Weighted average fair value per restricted unit $ 58.78 $ 93.32 $ 59.82
Summary of Terms of Each Retirement Eligibility Category	The following table summarizes the terms of each retirement eligibility category. Age 62 for Employees Rule of 70 for Employees Age 72 for Trustees Eligibility For employees hired prior to January 1, 2009 and who were age 59 or older as of February 1, 2019. All employees (1). All non-employee Trustees. Effect on unvested restricted shares, restricted units and Options Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Awards continue to vest per the original vesting schedule, subject to certain conditions, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions. Effect on LTI Plan Awards are prorated in proportion to the number of days worked in the first year of the three-year performance period and the individual does not receive any payout of shares or units until the final payout is determined at the end of the three-year performance period. (1) The Rule of 70 is met when an employee’s years of service with the Company (which must be at least 15 years) plus his or her age (which must be at least 55 years) on the date of termination equals or exceeds 70 years. In addition, the employee must give the Company at least six months’ advance written notice of his or her intention to retire along with agreeing to certain other conditions.
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan	The following tables summarize compensation information regarding the restricted shares, restricted units, Options and Employee Share Purchase Plan (“ESPP”) for the three years ended December 31, 2023, 2022 and 2021. Year Ended December 31, 2023 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 11,006 $ 1,480 $ — $ 12,486 $ 889 Restricted units 15,809 96 525 16,430 904 Options 4,436 192 — 4,628 — ESPP discount 564 80 — 644 — Total $ 31,815 $ 1,848 $ 525 $ 34,188 $ 1,793 Year Ended December 31, 2022 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 10,419 $ 1,176 $ — $ 11,595 $ 1,120 Restricted units 16,487 87 2,530 19,104 1,039 Options 1,889 169 263 2,321 — ESPP discount 718 78 — 796 — Total $ 29,513 $ 1,510 $ 2,793 $ 33,816 $ 2,159 Year Ended December 31, 2021 Compensation Compensation Restricted Units/Options Compensation Dividends Restricted shares $ 7,258 $ 1,131 $ — $ 8,389 $ 761 Restricted units 16,689 70 1,038 17,797 1,254 Options 2,980 121 — 3,101 — ESPP discount 883 108 — 991 — Total $ 27,810 $ 1,430 $ 1,038 $ 30,278 $ 2,015 (1) The Company allows eligible officers the ability to receive immediately vested restricted units (subject to the book-up provisions described above and a two-year hold restriction) or immediately vested Options in-lieu of any percentage of their annual cash bonus.
Award Activity of the Share Incentive Plans	The table below summarizes the Award activity of the Share Incentive Plans for the three years ended December 31, 2023, 2022 and 2021: Common Weighted Restricted Weighted Restricted Weighted Balance at December 31, 2020 5,642,752 $ 56.91 353,634 $ 71.81 879,800 $ 66.78 Awards granted 489,853 $ 67.58 96,224 $ 70.46 190,742 $ 60.71 Awards exercised/vested ( 1,710,692 ) $ 50.09 ( 133,351 ) $ 62.89 ( 181,531 ) $ 62.01 Awards forfeited ( 23,317 ) $ 73.33 ( 6,631 ) $ 74.31 ( 35,580 ) $ 59.82 Awards expired ( 10,763 ) $ 68.00 — $ — — $ — Balance at December 31, 2021 4,387,833 $ 60.65 309,876 $ 75.17 853,431 $ 66.11 Awards granted 164,199 $ 88.22 182,801 $ 80.52 223,242 $ 86.47 Awards exercised/vested ( 468,021 ) $ 52.87 ( 194,533 ) $ 70.91 ( 122,999 ) $ 66.10 Awards forfeited ( 12,968 ) $ 77.29 ( 8,226 ) $ 82.02 — $ — Awards expired ( 9,683 ) $ 60.02 — $ — — $ — Balance at December 31, 2022 4,061,360 $ 62.60 289,918 $ 81.21 953,674 $ 73.57 Awards granted 395,280 $ 66.56 152,217 $ 66.93 236,031 $ 60.38 Awards exercised/vested ( 495,690 ) $ 48.52 ( 118,322 ) $ 80.76 ( 75,105 ) $ 76.38 Awards forfeited ( 1,717 ) $ 66.73 ( 3,743 ) $ 76.43 ( 70,667 ) $ 59.14 Awards expired ( 981 ) $ 67.50 — $ — — $ — Balance at December 31, 2023 3,958,252 $ 64.76 320,070 $ 74.64 1,043,933 $ 68.56 Amounts in thousands except per share amounts Year Ended December 31, 2023 2022 2021 Weighted average grant date fair value per share for Options granted $ 12.61 $ 12.45 $ 7.98 Aggregate intrinsic value of Options exercised (1) $ 6,023 $ 14,511 $ 47,413 Fair value of restricted shares vested $ 7,783 $ 17,353 $ 9,222 Fair value of restricted units vested $ 4,965 $ 10,662 $ 12,468 (1) These values were calculated as the difference between the strike price of the underlying awards and the per share price at which each respective award was exercised.
Information Regarding Options Outstanding and Exercisable	he following table summarizes information regarding Options outstanding and exercisable at December 31, 2023 (aggregate intrinsic value is in thousands): Options Weighted Weighted Aggregate Options Outstanding 3,958,252 4.81 $ 64.76 $ 2,889 Options Exercisable 3,342,785 4.12 $ 63.83 $ 2,889 Vested and expected to vest 611,238 8.54 $ 69.80 $ — (1) The aggregate intrinsic values were calculated as the excess, if any, between the Company’s closing share price of $ 61.16 per share on December 31, 2023 and the strike price of the underlying awards.

Employee Plans (Tables)

Employee Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement, Additional Disclosure [Abstract]
Summary of Information Regarding the Common Shares Issued Under the ESPP	The following table summarizes information regarding the Common Shares issued under the ESPP with the net proceeds noted below being contributed to ERPOP in exchange for OP Units (amounts in thousands except share and per share amounts): Year Ended December 31, 2023 2022 2021 Shares issued 68,136 66,835 70,702 Issuance price ranges $ 47.97 – $ 55.11 $ 52.33 – $ 72.51 $ 53.13 – $ 71.04 Issuance proceeds $ 3,517 $ 4,178 $ 4,265

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Real Estate Development Commitments	The following table summarizes the gross remaining total project costs for the Company’s projects under development at December 31, 2023 (total project costs remaining in thousands): Projects Apartment Units Total Project Costs Remaining (1) Projects Under Development Consolidated 1 225 $ 74,585 Unconsolidated 6 1,982 144,928 Total Projects Under Development 7 2,207 $ 219,513 (1) The Company's share of the $ 219.5 million in total project costs remaining approximates $ 76.6 million, with the balance funded by the Company's joint venture partners (approximately $ 0.7 million) and/or applicable construction loans (approximately $ 142.2 million).
Schedule of Contractual Obligations	The following table summarizes the Company’s contractual obligations for deferred compensation for the next five years and thereafter as of December 31, 2023: (Payments) Due by Year (in thousands) 2024 2025 2026 2027 2028 Thereafter Total Other Long-Term Liabilities: Deferred Compensation (1) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 840 ) $ ( 3,778 ) $ ( 7,978 ) (1) Includes payments due to the estate of the Company’s former Chairman. As of December 31, 2023, no payments remain due to the Company's former executive officer.

Reportable Segments (Tables)

Reportable Segments (Tables)	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Schedule of Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations	The following table presents a reconciliation of NOI from our rental real estate for the years ended December 31, 2023, 2022 and 2021, respectively (amounts in thousands): Year Ended December 31, 2023 2022 2021 Rental income $ 2,873,964 $ 2,735,180 $ 2,463,997 Property and maintenance expense ( 514,575 ) ( 483,865 ) ( 453,532 ) Real estate taxes and insurance expense ( 412,114 ) ( 388,412 ) ( 397,105 ) Total operating expenses ( 926,689 ) ( 872,277 ) ( 850,637 ) Net operating income $ 1,947,275 $ 1,862,903 $ 1,613,360
Schedule of NOI from Rental Real Estate for Each Segment Specific to Continuing Operations	The following tables present NOI from our rental real estate for each segment for the years ended December 31, 2023, 2022 and 2021, respectively, as well as total assets and capital expenditures at December 31, 2023 and 2022, respectively (amounts in thousands): Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Rental Operating NOI Rental Operating NOI Rental Operating NOI Same store (1) Los Angeles $ 466,980 $ 143,983 $ 322,997 $ 450,635 $ 132,858 $ 317,777 $ 431,954 $ 132,274 $ 299,680 Orange County 130,343 28,699 101,644 122,660 26,511 96,149 109,427 24,986 84,441 San Diego 92,691 20,602 72,089 86,728 19,506 67,222 78,709 18,395 60,314 Subtotal - Southern California 690,014 193,284 496,730 660,023 178,875 481,148 620,090 175,655 444,435 Washington, D.C. 441,676 140,696 300,980 417,210 138,570 278,640 389,205 129,065 260,140 San Francisco 430,390 129,480 300,910 415,173 124,192 290,981 383,817 118,795 265,022 New York 476,319 193,311 283,008 434,820 187,218 247,602 367,370 182,631 184,739 Seattle 290,894 81,787 209,107 281,959 79,037 202,922 256,988 80,775 176,213 Boston 289,423 85,579 203,844 270,899 82,523 188,376 235,050 76,374 158,676 Denver 71,067 21,328 49,739 67,785 19,569 48,216 39,084 11,209 27,875 Other Expansion Markets 64,928 27,983 36,945 61,897 27,618 34,279 — — — Total same store 2,754,711 873,448 1,881,263 2,609,766 837,602 1,772,164 2,291,604 774,504 1,517,100 Non-same store/other Non-same store (2) 100,970 36,836 64,134 74,379 29,758 44,621 59,629 27,691 31,938 Other (3) 18,283 16,405 1,878 51,035 4,917 46,118 112,764 48,442 64,322 Total non-same store/other 119,253 53,241 66,012 125,414 34,675 90,739 172,393 76,133 96,260 Totals $ 2,873,964 $ 926,689 $ 1,947,275 $ 2,735,180 $ 872,277 $ 1,862,903 $ 2,463,997 $ 850,637 $ 1,613,360 (1) For the years ended December 31, 2023 and 2022 , same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2022, less properties subsequently sold, which represented 76,297 apartment units. For the year ended December 31, 2021, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2021, less properties subsequently sold, which represented 72,872 apartment units. (2) For the years ended December 31, 2023 and 2022, non-same store primarily includes properties acquired after January 1, 2022, plus any properties in lease-up and not stabilized as of January 1, 2022, and any properties undergoing major renovations. For the year ended December 31, 2021, non-same store primarily includes properties acquired after January 1, 2021, plus any properties in lease-up and not stabilized as of January 1, 2021, and any properties undergoing major renovations. (3) Other includes development, other corporate operations and operations prior to disposition for properties sold. Year Ended December 31, 2023 Year Ended December 31, 2022 Total Assets Capital Expenditures Total Assets Capital Expenditures Same store (1) Los Angeles $ 2,489,180 $ 54,688 $ 2,549,606 $ 35,057 Orange County 343,219 9,888 356,396 7,885 San Diego 231,549 17,137 228,471 8,798 Subtotal - Southern California 3,063,948 81,713 3,134,473 51,740 Washington, D.C. 2,995,509 50,504 3,091,996 34,640 San Francisco 2,972,476 53,963 3,049,771 33,497 New York 3,326,831 21,908 3,421,373 21,636 Seattle 2,075,966 34,011 2,141,346 27,935 Boston 1,748,887 30,852 1,807,629 23,951 Denver 824,264 4,220 857,021 8,561 Other Expansion Markets 782,977 5,674 811,130 2,175 Total same store 17,790,858 282,845 18,314,739 204,135 Non-same store/other Non-same store (2) 1,493,139 35,615 1,134,000 15,277 Other (3) 750,567 882 769,523 1,674 Total non-same store/other 2,243,706 36,497 1,903,523 16,951 Totals $ 20,034,564 $ 319,342 $ 20,218,262 $ 221,086 (1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2022, less properties subsequently sold, which represented 76,297 apartment units. (2) Non-same store primarily includes properties acquired after January 1, 2022, plus any properties in lease-up and not stabilized as of January 1, 2022, and any properties undergoing major renovations. (3) Other includes development, other corporate operations and capital expenditures for properties sold.

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2023
Subsequent Events [Abstract]
Disposed Properties to Unaffiliated Parties	• Disposed of the following to unaffiliated parties (sales price in thousands): Properties Apartment Units Sales Price Rental Properties – Consolidated 3 504 $ 248,500 Total 3 504 $ 248,500

Business - Ownership Breakdown

Business - Ownership Breakdown (Details)	Dec. 31, 2023 ApartmentUnit Property
Property/Unit schedule
Properties | Property	302
Apartment Units | ApartmentUnit	80,191
Wholly Owned Properties
Property/Unit schedule
Properties | Property	288
Apartment Units | ApartmentUnit	77,131
Partially Owned Properties – Consolidated
Property/Unit schedule
Properties | Property	14
Apartment Units | ApartmentUnit	3,060

Business - Additional Informati

Business - Additional Information (Details)	Dec. 31, 2023 Property ApartmentUnit State
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of states in which entity operates | State	10
Properties | Property	302
Apartment units | ApartmentUnit	80,191
ERPOP [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Noncontrolling interest, ownership percentage by parent	97%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) ApartmentUnit Property $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares
Capitalized costs development and renovation	$ 15,400,000	$ 15,600,000
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.01	$ 0.01	$ 0.01
Provision for income tax	$ 1,148,000	$ 900,000	$ 915,000
Alternative minimum tax preference adjustment per share | $ / shares	$ 0.01
Alternative minimum tax preference adjustment disclosed under treasury regulation one year amounts disclosure per share | $ / shares	0.04101
Alternative minimum tax preference adjustment disclosed under treasury regulation year three amounts disclosure per share | $ / shares	$ 0.04071
Properties | Property	302
Noncontrolling Interests – Partially Owned Properties	$ 994,000	$ (721,000)
Apartment units | ApartmentUnit	80,191
Limited Life Partnership Properties [Member]
Properties | Property	2
Noncontrolling Interests deficit - Partially Owned Properties	$ (3,500,000)
Noncontrolling interests settlement value	$ 49,100,000
Consolidated Properties [Member]
Properties | Property	14
Noncontrolling Interests – Partially Owned Properties	$ 1,000,000
Apartment units | ApartmentUnit	3,060
Federal [Member]
Provision for income tax	$ 0
Minimum [Member] | Retail Commercial Leases [Member]
Retail leases term	5 years
Maximum [Member] | Retail Commercial Leases [Member]
Retail leases term	10 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, plant and equipment, estimated useful lives	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, plant and equipment, estimated useful lives	10 years
Building [Member]
Property, plant and equipment, estimated useful lives	30 years
Replacements [Member] | Minimum [Member]
Property, plant and equipment, estimated useful lives	5 years
Replacements [Member] | Maximum [Member]
Property, plant and equipment, estimated useful lives	10 years
Renovations and building Improvements [Member] | Minimum [Member]
Property, plant and equipment, estimated useful lives	5 years
Renovations and building Improvements [Member] | Maximum [Member]
Property, plant and equipment, estimated useful lives	15 years
Corporate Office Leases [Member] | Maximum [Member]
Remaining lease terms	10 years
Ground Leases [Member]
Unsecured borrowing rates for actual pricing period used for calculating discount rate	30 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies Tax (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Summary Of Significant Accounting Policies [Abstract]
State and local income, franchise and excise tax (benefit)	$ 1,148	$ 900	$ 915
Income and other tax expense (benefit)	$ 1,148	$ 900	$ 915
Tax Treatment Of Dividends And Distributions Ordinary Dividends	$ 1.85676	$ 1.75466	$ 1.40791
Tax Treatment Of Dividends And Distributions Long Term Capital Gain	0.57857	0.4285	0.73687
Tax Treatment Of Dividends And Distributions Unrecaptured Section Twelve Hundred And Fifty Gain	0.17717	0.29434	0.26522
Dividends and distributions declared per Common Share outstanding	$ 2.61250	$ 2.47750	$ 2.41000

Summary of Significant Accoun_6

Summary of Significant Accounting Policies Tax (Parenthetical) (Details) - $ / shares	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure Summary Of Significant Accounting Policies Tax Parenthetical Details [Abstract]
Dividend payable common share/unit, per share	$ 0.6625	$ 0.625	$ 0.6025

Equity, Capital and Other Int_3

Equity, Capital and Other Interests - Changes in Company's Issued and Outstanding Common Shares and Units (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity Capital And Other Interests [Abstract]
Common Stock, Shares, Outstanding	378,429,708	375,527,195	372,302,000
Common Shares Issued:
Conversion of OP Units	1,013,795	452,532	1,354,208
Issuance of Common Shares		1,740,550
Exercise of share options	495,690	468,021	1,710,692
Employee Share Purchase Plan (ESPP)	68,136	66,835	70,702
Restricted share grants, net	148,474	174,575	89,593
Common Shares Other:
Repurchased and retired	(864,386)
Common Stock, Shares, Outstanding	379,291,417	378,429,708	375,527,195
Units
Total Units Outstanding	12,429,737	12,659,027	13,858,073
Restricted unit grants, net	165,364	223,242	155,162
Conversion of OP Units to Common Shares	(1,013,795)	(452,532)	(1,354,208)
Total Units Outstanding	11,581,306	12,429,737	12,659,027
Common Shares And Units Outstanding	390,872,723	390,859,445	388,186,222
Units Ownership Interest in Operating Partnership	3%	3.20%	3.30%

Equity, Capital and Other Int_4

Equity, Capital and Other Interests - Changes in Operating Partnership's Issued and Outstanding General Partner Units and Limited Partner Units (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
General and Limited Partner Units
Common Shares And Units Outstanding	390,859,445	388,186,222
Issuance of OP Units		1,740,550
Exercise of share options	495,690	468,021	1,710,692
Employee Share Purchase Plan (ESPP)	68,136	66,835	70,702
Restricted share grants, net	148,474	174,575	89,593
Restricted unit grants, net	165,364	223,242	155,162
Common Shares And Units Outstanding	390,872,723	390,859,445	388,186,222
Limited Partner Units
Total Units Outstanding	12,429,737	12,659,027	13,858,073
Restricted unit grants, net	165,364	223,242	155,162
Conversion of Limited Partner OP Units to EQR Common Shares	(1,013,795)	(452,532)	(1,354,208)
Total Units Outstanding	11,581,306	12,429,737	12,659,027
Units Ownership Interest in Operating Partnership	3%	3.20%	3.30%
ERPOP [Member]
General and Limited Partner Units
Common Shares And Units Outstanding	390,859,445	388,186,222	386,160,073
Issuance of OP Units		1,740,550
Exercise of share options	495,690	468,021	1,710,692
Employee Share Purchase Plan (ESPP)	68,136	66,835	70,702
Restricted share grants, net	148,474	174,575	89,593
Restricted unit grants, net	165,364	223,242	155,162
Common Shares And Units Outstanding	390,872,723	390,859,445	388,186,222
OP Units repurchased and retired	(864,386)
Limited Partner Units
Total Units Outstanding	12,429,737	12,659,027	13,858,073
Restricted unit grants, net	165,364	223,242	155,162
Conversion of Limited Partner OP Units to EQR Common Shares	(1,013,795)	(452,532)	(1,354,208)
Total Units Outstanding	11,581,306	12,429,737	12,659,027
Units Ownership Interest in Operating Partnership	3%	3.20%	3.30%

Equity, Capital and Other Int_5

Equity, Capital and Other Interests - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity Capital And Other Interests [Abstract]
Redeemable noncontrolling interests - operating partnership	$ 289,248	$ 318,273	$ 498,977	$ 338,951
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, par or stated value per share	$ 0.01	$ 0.01

Equity, Capital and Other Int_6

Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Redeemable Noncontrolling Interests - Operating Partnership Units	$ 318,273	$ 498,977	$ 338,951
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership	(7,667)	(176,490)	158,598
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(21,358)	(4,214)	1,428
Redeemable Noncontrolling Interests - Operating Partnership Units	289,248	318,273	498,977
E R P O P [Member]
Class of Stock [Line Items]
Redeemable Noncontrolling Interests - Operating Partnership Units	318,273	498,977	338,951
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership	(7,667)	(176,490)	158,598
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(21,358)	(4,214)	1,428
Redeemable Noncontrolling Interests - Operating Partnership Units	$ 289,248	$ 318,273	$ 498,977

Equity, Capital and Other Int_7

Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Limited Partners Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Redeemable Limited Partners	$ 318,273	$ 498,977	$ 338,951
Limited Partners Change In Redemption Value	(7,667)	(176,490)	158,598
Limited Partners Change In Carrying Value	(21,358)	(4,214)	1,428
Redeemable Limited Partners	289,248	318,273	498,977
E R P O P [Member]
Class of Stock [Line Items]
Redeemable Limited Partners	318,273	498,977	338,951
Limited Partners Change In Redemption Value	(7,667)	(176,490)	158,598
Limited Partners Change In Carrying Value	(21,358)	(4,214)	1,428
Redeemable Limited Partners	$ 289,248	$ 318,273	$ 498,977

Equity, Capital and Other Int_8

Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Details) - EQR and ERPOP [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Class Of Stock [Line Items]
8.29% Series K Cumulative Redeemable Preferred Shares/Preference Units; liquidation value $50 per share/unit; 745,600 shares/units issued and outstanding as of December 31, 2023 and 2022	$ 37,280	$ 37,280
Preferred Stock
Class Of Stock [Line Items]
Preferred Stocks Preference Units Call Date	Dec. 10, 2026
Annual Dividend Per Preferred Share Preference Unit	$ 4.145
8.29% Series K Cumulative Redeemable Preferred Shares/Preference Units; liquidation value $50 per share/unit; 745,600 shares/units issued and outstanding as of December 31, 2023 and 2022	$ 37,280	$ 37,280

Equity, Capital and Other Int_9

Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Parenthetical) (Details) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Class Of Stock [Line Items]
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock
Class Of Stock [Line Items]
Preferred Stock Preference Units Issued	745,600	745,600
Preferred Stock Preference Units Outstanding	745,600	745,600
Preferred Stock Preference Units Redemption Price Per Share	$ 50	$ 50
Preferred Stock Preference Units Dividend Rate Percentage	8.29%	8.29%

Equity, Capital and Other In_10

Equity, Capital and Other Interests - Other - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2021
Class Of Stock [Line Items]
Common shares available for issuance		4,619,250
Common Stock, Shares, Issued	378,429,708	379,291,417
Repurchase of stock, weighted average price per share		$ 56.79
Common shares repurchased and retired		$ 49,100,000
Repurchased and retired		864,386
Stock repurchase program, remaining number of shares authorized to be repurchased		12,135,614
Preferred stock, pay distributions		$ 0.03
ERPOP Member
Class Of Stock [Line Items]
OP Units repurchased and retired		864,386
Forward Sales Agreements [Member]
Class Of Stock [Line Items]
Common shares available for issuance		13,000,000
Amount of share issuance		$ 0
Preferred Stock [Member]
Class Of Stock [Line Items]
Redeemable preference shares issued related to buyout of non controlling interest		900,000
Redeemable preference shares issued related to buyout of non controlling interest		933,454
Preferred stock preference units dividend rate percentage		3%
Preferred unit liquidation value		$ 1
ATM Share Offering [Member] | Prior Program [Member] | Forward Sales Agreements [Member]
Class Of Stock [Line Items]
Common Stock, Shares, Issued			1,700,000
Weighted average initial forward price per share			$ 83.25
Shares settled, per share	$ 80.22
Proceeds from settlement of shares	$ 139,600,000

Real Estate - Summary of Carryi

Real Estate - Summary of Carrying Amounts of Investment in Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Land	$ 5,581,876	$ 5,580,878
Depreciable property:
Buildings and improvements	19,809,432	19,471,503
Furniture, fixtures and equipment	2,609,600	2,352,050
In-Place lease intangibles	519,394	510,816
Projects under development:
Projects under development	78,036	112,940
Land held for development:
Land held for development	114,300	60,567
Investment in real estate	28,712,638	28,088,754
Accumulated depreciation	(9,810,337)	(9,027,850)
Investment in real estate, net	18,902,301	19,060,904
Land [Member]
Land	15,000	15,000
Projects under development:
Projects under development	3,201	3,201
Land held for development:
Land held for development	82,026	46,160
Construction-in-progress [Member]
Projects under development:
Projects under development	74,835	109,739
Land held for development:
Land held for development	$ 32,274	$ 14,407

Real Estate - Acquired Properti

Real Estate - Acquired Properties From Unaffiliated Parties (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Property ApartmentUnit	Dec. 31, 2022 USD ($) Property ApartmentUnit
Properties | Property	4	1
Apartment Units | ApartmentUnit	1,183	172
Purchase Price	$ 366,334	$ 113,000
Land	41,142	25,361
Depreciable Property	$ 325,611	$ 87,685
Rental Properties – Consolidated [Member]
Properties | Property	4	1
Apartment Units | ApartmentUnit	1,183	172
Purchase Price	$ 366,334	$ 113,000
Land	41,142	25,361
Depreciable Property	$ 325,611	$ 87,685

Real Estate - Acquired Proper_2

Real Estate - Acquired Properties From Unaffiliated Parties (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Purchase Price	$ 366,334	$ 113,000
2.24% Fixed Rate Mortgage Debt Maturing in September 2030 [Member]
Initial discount	$ 11,200

Real Estate - Disposed Properti

Real Estate - Disposed Properties to Unaffiliated Parties (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) ApartmentUnit Property	Dec. 31, 2022 USD ($) Property ApartmentUnit	Dec. 31, 2021 USD ($)
Properties disposed | Property	11	3
Property Units disposed | ApartmentUnit	912	945
Sales Price	$ 379,893	$ 746,150
Net Gain	$ 282,539	$ 304,325	$ 1,072,183
Rental Properties – Consolidated [Member]
Properties disposed | Property	11	3
Property Units disposed | ApartmentUnit	912	945
Sales Price	$ 379,893	$ 746,150
Net Gain	$ 282,539	$ 304,325

Real Estate - Additional Inform

Real Estate - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022
Non-cash asset impairment charge	$ 16,769
Carrying value		$ 5,581,876	$ 5,580,878
Land [Member]
Non-cash asset impairment charge	$ 16,800
Carrying value		$ 15,000	$ 15,000

Commitments to Acquire_Dispos_3

Commitments to Acquire/Dispose of Real Estate - Summary of Agreement to dispose (Details) $ in Thousands	Dec. 31, 2023 USD ($) ApartmentUnit Property
Property/Unit schedule
Properties | Property	2
Apartment Units | ApartmentUnit	300
Sales Price	$ 80,000
Net Book Value at December 31, 2023	$ 70,533
Rental Properties – Consolidated [Member]
Property/Unit schedule
Properties | Property	2
Apartment Units | ApartmentUnit	300
Sales Price	$ 80,000
Net Book Value at December 31, 2023	$ 70,533

Investments in Partially Owne_3

Investments in Partially Owned Entities - Summary of Company's Consolidated Joint Ventures (Details)	Dec. 31, 2023 ApartmentUnit Project Property	Dec. 31, 2022 ApartmentUnit Property Project
Variable Interest Entity [Line Items]
Properties | Property	302
Project | Project	1
Apartment units	80,191
Consolidated VIE [Member] | Operating Properties [Member]
Variable Interest Entity [Line Items]
Properties | Property	14	15
Apartment units	3,060	3,114
Consolidated VIE [Member] | Projects Under Development [Member]
Variable Interest Entity [Line Items]
Project | Project		1
Apartment units		312
Consolidated VIE [Member] | Projects Held for Development [Member]
Variable Interest Entity [Line Items]
Project | Project	1
Apartment units	440

Investments in Partially Owne_4

Investments in Partially Owned Entities - Summary of Consolidated Assets and Liabilities Related to the Company's VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Consolidated Assets	$ 20,034,564	$ 20,218,262
Consolidated Liabilities	8,456,188	8,517,310
Consolidated VIE [Member]
Variable Interest Entity [Line Items]
Consolidated Assets	599,788	691,880
Consolidated Liabilities	$ 41,153	$ 158,932

Investments in Partially Owne_5

Investments in Partially Owned Entities - Additional Information (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) ApartmentUnit JointVenture Property Project	Dec. 31, 2022 USD ($) ApartmentUnit Project
Variable Interest Entity [Line Items]
Property units acquired | ApartmentUnit	1,183	172
Repayment of debt	$ 3,354,000	$ 3,392,000
Payments to acquired interest in consolidated operating property	$ 4,600,000	$ 32,200,000
Apartment units | ApartmentUnit	80,191
Number of unconsolidated projects | Project	1
Closure funding amount	$ 0
Maximum [Member]
Variable Interest Entity [Line Items]
Funding for budgeted project costs	$ 139,000,000
Partially Owned Properties [Member]
Variable Interest Entity [Line Items]
Number of partially owned properties sold | Property	1
Apartment units | ApartmentUnit	166
Proceeds from sale of real estate	$ 60,100,000
Variable Rate Construction Mortgage [Member]
Variable Interest Entity [Line Items]
Repayment of debt	$ 67,900,000
Number of consolidated development joint ventures | JointVenture	1
Cash [Member]
Variable Interest Entity [Line Items]
Payments to acquired interest in consolidated operating property	$ 3,700
Preferred Stock [Member]
Variable Interest Entity [Line Items]
Preferred stock preference units dividend rate percentage	3%
Payments to acquired interest in consolidated operating property	$ 900,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Percentage interest in consolidated operating property	10%	25%
Property units acquired | ApartmentUnit	200	432
Repayment of debt	$ 64,700,000
Variable Interest Entity, Primary Beneficiary [Member] | Noncontrolling Interest [Member]
Variable Interest Entity [Line Items]
Partially owned property reduced amount	0	$ 0
Payments to acquired interest in consolidated operating property	3,700,000	4,800,000
Variable Interest Entity, Primary Beneficiary [Member] | Paid in Capital/General Partner Capital [Member]
Variable Interest Entity [Line Items]
Payments to acquired interest in consolidated operating property	$ 900,000	$ 27,400,000
Operating Properties [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Apartment units | ApartmentUnit	3,060	3,114
Project Under Development [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Apartment units | ApartmentUnit		312
Number of unconsolidated projects | Project		1

Investments in Partially Owne_6

Investments in Partially Owned Entities - Summary of Variable Rate Construction Mortgage Debt (Details) - Consolidated VIE [Member] $ in Thousands	Dec. 31, 2022 USD ($) JointVenture
Recently Completed Operating Property [Member]
Variable Interest Entity [Line Items]
Number of joint ventures with debt financing | JointVenture	1
Aggregate loan commitments	$ 67,589
Amounts borrowed under loan commitments	$ 64,776
Projects Under Development [Member]
Variable Interest Entity [Line Items]
Number of joint ventures with debt financing | JointVenture	1
Aggregate loan commitments	$ 73,344
Amounts borrowed under loan commitments	$ 44,980

Investments in Partially Owne_7

Investments in Partially Owned Entities - Summary of Company's Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ 282,049	$ 279,024
Various Real Estate Holdings [Member] | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	35,421	35,974
Projects Under Development and Land Held for Development (VIE) [Member]
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ 220,192	218,043
Projects Under Development and Land Held for Development (VIE) [Member] | Variable Interest Entity, Not Primary Beneficiary | Minimum [Member]
Variable Interest Entity [Line Items]
Ownership Percentage	62%
Projects Under Development and Land Held for Development (VIE) [Member] | Variable Interest Entity, Not Primary Beneficiary | Maximum [Member]
Variable Interest Entity [Line Items]
Ownership Percentage	95%
Real Estate Technology Funds/Companies (VIE) [Member] | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ 26,691	25,249
Other [Member]
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ (255)	$ (242)

Investments in Partially Owne_8

Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Details)	Dec. 31, 2023 ApartmentUnit Project Entity	Dec. 31, 2022 Entity Project ApartmentUnit
Variable Interest Entity [Line Items]
Project | Project	1
Apartment units | ApartmentUnit	80,191
Variable Interest Entity, Not Primary Beneficiary | Real Estate Holdings [Member]
Variable Interest Entity [Line Items]
Entities | Entity	3	2
Variable Interest Entity, Not Primary Beneficiary | Projects Under Development [Member]
Variable Interest Entity [Line Items]
Project | Project	6	6
Apartment units | ApartmentUnit	1,982	1,982
Variable Interest Entity, Not Primary Beneficiary | Projects Held for Development [Member]
Variable Interest Entity [Line Items]
Project | Project	4	3
Apartment units | ApartmentUnit	1,164	966

Investments in Partially Owne_9

Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Parenthetical) (Details)	Dec. 31, 2023 LandParcel
Real Estate Holdings [Member] | Unconsolidated VIE [Member]
Variable Interest Entity [Line Items]
Number of project subject to long term ground lease for land parcel	1

Investments in Partially Own_10

Investments in Partially Owned Entities - Summary of Information on Total Unconsolidated Development Joint Ventures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) ApartmentUnit JointVenture	Dec. 31, 2022 USD ($) ApartmentUnit JointVenture	Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items]
Investments in unconsolidated entities - acquisitions	$ 2,800	$ 49,855	$ 48,534
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of unconsolidated joint ventures | JointVenture	2	3
Apartment units | ApartmentUnit	638	1,019
Variable Interest Entity, Not Primary Beneficiary [Member] | Equity Residential [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated entities - acquisitions	$ 2,800	$ 49,855

Restricted Deposits - Restricte

Restricted Deposits - Restricted Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Mortgage escrow deposits:
Real estate taxes and insurance	$ 307
Mortgage principal reserves/sinking funds	29,270	$ 25,304
Mortgage escrow deposits	29,577	25,304
Restricted cash:
Earnest money on pending acquisitions	524	4,500
Restricted deposits on real estate investments	2,181	229
Resident security and utility deposits	40,149	38,432
Replacement reserves	15,571	12,549
Other	1,250	2,289
Restricted cash	59,675	57,999
Restricted deposits	$ 89,252	$ 83,303	$ 236,404

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Property	Dec. 31, 2022 USD ($)
Operating Leased Assets [Line Items]
Non-cash write-off of straight-line receivables	$ 1,500
Finance Lease, Liability	7,100
Ground Leases [Member]
Operating Leased Assets [Line Items]
Finance Lease, Liability	$ 68,143	$ 68,919
Number of operating properties | Property	16
Maximum [Member] | Corporate Office Leases [Member]
Operating Leased Assets [Line Items]
Lease expiration dates (inclusive of applicable extension options)	2042
Maximum [Member] | Ground Leases [Member]
Operating Leased Assets [Line Items]
Operating lease expiration year	2118
Minimum [Member] | Corporate Office Leases [Member]
Operating Leased Assets [Line Items]
Lease expiration dates (inclusive of applicable extension options)	2024
Minimum [Member] | Ground Leases [Member]
Operating Leased Assets [Line Items]
Operating lease expiration year	2042

Leases - Summary of Lease Incom

Leases - Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Leased Assets [Line Items]
Total lease revenue	$ 2,747,585	$ 2,623,559	$ 2,366,594
Rental income	2,873,964	2,735,180	2,463,997
Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	2,684,179	2,558,354	2,300,246
Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	63,406	65,205	66,348
Residential and Non-Residential Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	2,640,758	2,510,511	2,263,166
Residential and Non-Residential Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	2,578,565	2,446,516	2,202,133
Residential and Non-Residential Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	62,193	63,995	61,033
Utility Recoveries (RUBS Income) [Member]
Operating Leased Assets [Line Items]
Total lease revenue	87,534	81,984	75,569
Utility Recoveries (RUBS Income) [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	86,628	81,140	74,846
Utility Recoveries (RUBS Income) [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	906	844	723
Parking Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	44,530	43,770	41,499
Parking Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	44,081	43,335	40,934
Parking Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	449	435	565
Other Lease Revenue [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(25,237)	(12,706)	(13,640)
Other Lease Revenue [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(25,095)	(12,637)	(17,667)
Other Lease Revenue [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(142)	(69)	4,027
Parking Revenue [Member]
Operating Leased Assets [Line Items]
Rental income	40,836	37,338	26,789
Other Revenue [Member]
Operating Leased Assets [Line Items]
Rental income	85,543	74,283	70,614
Other Rental Income [Member]
Operating Leased Assets [Line Items]
Rental income	$ 126,379	$ 111,621	$ 97,403

Leases - Summary of Residential

Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Details) - Other Assets [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2021
Residential Leases [Member]
Operating Leased Assets [Line Items]
Resident/tenant accounts receivable balances	$ 21,477	$ 35,688
Allowance for doubtful accounts	(15,846)	(31,405)
Net receivable balances	5,631	4,283
Straight-line receivable balances	9,183	4,398
Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Resident/tenant accounts receivable balances	2,822	2,820
Allowance for doubtful accounts	(1,849)	(2,152)
Net receivable balances	973	668
Straight-line receivable balances	$ 11,915	$ 13,795

Leases - Summary of Residenti_2

Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Parenthetical) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Leases [Abstract]
Non-cash write-off of straight-line receivables	$ 1.5

Leases - Summary of Residenti_3

Leases - Summary of Residential Bad Debt for Company's Properties (Details) - Residential Leases [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lessor Lease Description [Line Items]
Bad debt, net	$ 38,117	$ 26,570	$ 31,485
% of residential rental income	1.40%	1%	1.30%

Leases - Summary of Residenti_4

Leases - Summary of Residential Bad Debt for Company's Properties (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Bad debt, net from resident payments	$ 2.8	$ 34.7	$ 34.8

Leases - Summary of Right-of-Us

Leases - Summary of Right-of-Use Assets and Related Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating Leased Assets [Line Items]
Right-of-use assets	$ 457,266	$ 462,956
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Right-of-use assets	Right-of-use assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Right-of-use assets	Right-of-use assets
Lease liabilities	$ 311,640	$ 308,748
Finance lease, liabilities	$ 7,100
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Lease liabilities	Lease liabilities
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Lease liabilities	Lease liabilities
Corporate Office Leases [Member]
Operating Leased Assets [Line Items]
Right-of-use assets	$ 40,485	$ 35,747
Lease liabilities	38,745	34,767
Ground Leases [Member]
Operating Leased Assets [Line Items]
Right-of-use assets	324,430	332,355
Finance lease, right-of-use asset	94,091	95,834
Lease liabilities	203,012	204,082
Finance lease, liabilities	$ 68,143	$ 68,919

Leases - Summary of Quantitativ

Leases - Summary of Quantitative Disclosures for Lessees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lease cost:
Amortization of right-of-use assets (capitalized)	$ 146	$ 351	$ 351
Amortization of right-of-use assets (expensed)	1,781	1,391	1,391
Interest on lease liabilities (capitalized)			452
Interest on lease liabilities (expensed)	1,886	1,904	1,464
Total lease cost	31,826	30,817	29,587
Cash paid for amounts included in the measurement of lease liabilities:
Investing cash flows from finance leases			383
Financing cash flows from finance leases	$ 2,847	$ 2,463	$ 1,898
Weighted-average remaining lease term – finance leases	23 years 1 month 6 days	24 years 1 month 6 days	25 years 2 months 12 days
Weighted-average discount rate – finance leases	2.80%	2.80%	2.80%
Corporate Office Leases [Member]
Lease cost:
Operating lease cost	$ 4,738	$ 4,061	$ 3,581
Variable lease cost	599	430	1,037
Cash paid for amounts included in the measurement of lease liabilities:
Corporate office leases	$ 4,576	$ 4,385	$ 5,016
Weighted-average remaining lease term – operating leases	17 years 8 months 12 days	16 years 1 month 6 days	16 years 9 months 18 days
Weighted-average discount rate – operating leases:	4.30%	3.20%	3.20%
Ground Leases [Member]
Lease cost:
Operating lease cost	$ 18,338	$ 18,338	$ 18,338
Variable lease cost	4,338	4,342	2,973
Cash paid for amounts included in the measurement of lease liabilities:
Corporate office leases	$ 15,911	$ 15,037	$ 14,682
Weighted-average remaining lease term – operating leases	60 years 8 months 12 days	61 years 2 months 12 days	61 years 9 months 18 days
Weighted-average discount rate – operating leases:	5.10%	5.10%	5.10%

Leases - Summary of Undiscounte

Leases - Summary of Undiscounted Cash Flows for Contractual Obligations for Minimum Rent Payments/Receipts (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Leases [Abstract]
2024	$ (2,881)
2025	(2,946)
2026	(2,959)
2027	(2,971)
2028	(2,984)
Thereafter	(82,253)
Total	(96,994)
2024	(15,797)
2025	(16,028)
2026	(15,881)
2027	(15,984)
2028	(16,132)
Thereafter	(806,155)
Total	(885,977)
2024	53,000
2025	48,410
2026	44,582
2027	40,771
2028	34,709
Thereafter	112,720
Total	$ 334,192

Leases - Summary of Reconciliat

Leases - Summary of Reconciliation of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Leases [Abstract]
Total minimum rent payments	$ 982,971
Less: Lease discount	(671,331)
Lease liabilities	$ 311,640

Debt - Mortgage Notes Payable -

Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	$ 1,953,438	$ 2,191,201
Proceeds	572,896	48,054	$ 58,428
Assumptions	42,256
Lump sum payoffs	(932,598)	(286,461)	(156,815)
Scheduled principal repayments	(3,354)	(3,392)
Amortization of premiums/ discounts	1,843	2,184	2,764
Amortization of deferred financing costs, net	(1,579)	1,852
Mortgage notes payable, net ending balance	1,632,902	1,953,438	2,191,201
Fixed Rate Debt [Member] | Secured - Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	1,608,838	1,896,472
Proceeds	550,000
Assumptions	42,256
Lump sum payoffs	(800,000)	(286,461)
Scheduled principal repayments		(3,311)
Amortization of premiums/ discounts	601	941
Amortization of deferred financing costs, net	(3,097)	1,197
Mortgage notes payable, net ending balance	1,398,598	1,608,838	1,896,472
Floating Rate Debt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	344,600	294,729
Proceeds	22,896	48,054
Lump sum payoffs	(132,598)
Scheduled principal repayments	(3,354)	(81)
Amortization of premiums/ discounts	1,242	1,243
Amortization of deferred financing costs, net	1,518	655
Mortgage notes payable, net ending balance	234,304	344,600	294,729
Floating Rate Debt [Member] | Secured - Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	108,378	59,890
Proceeds	22,896	48,054
Lump sum payoffs	(132,598)
Scheduled principal repayments	(54)	(81)
Amortization of deferred financing costs, net	1,378	515
Mortgage notes payable, net ending balance		108,378	59,890
Floating Rate Debt [Member] | Secured - Tax Exempt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	236,222	234,839
Scheduled principal repayments	(3,300)
Amortization of premiums/ discounts	1,242	1,243
Amortization of deferred financing costs, net	140	140
Mortgage notes payable, net ending balance	$ 234,304	$ 236,222	$ 234,839

Debt - Mortgage Notes Payable_2

Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Parenthetical) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Property	Dec. 31, 2022 USD ($) Property	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 1,632,902	$ 1,953,438	$ 2,191,201
Properties | Property	4	1
5.18% Fixed Rate Mortgage Debt Maturing in September 2033 [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 200,000
Effective interest rate	5.18%
Debt instrument, maturity date	Sep. 30, 2033
5.25% Fixed Rate Mortgage Debt Maturing in September 2033 [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 350,000
Effective interest rate	5.25%
Debt instrument, maturity date	Sep. 30, 2033
Effective Interest Rate of Approximately 4.7% [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 550,000
Effective interest rate	4.70%
4.21% Fixed Rate Mortgage Debt due to Mature in November 2023 [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 800,000
Effective interest rate	4.21%
Debt instrument, maturity date	Nov. 30, 2023
2.24% Fixed Rate Mortgage Debt Maturing in September 2030 [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 53,500
Effective interest rate	2.24%
Debt instrument, maturity date	Sep. 30, 2030
Properties | Property	1
Initial discount	$ 11,200

Debt - Mortgage Notes Payable_3

Debt - Mortgage Notes Payable - Summary of Certain Interest Rate and Maturity Date Information (Details) - Mortgages [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.68%	3.46%
Maturity Date Ranges, Start	2029	2023
Maturity Date Ranges, End	2061	2061
Minimum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges (ending)	0.10%	0.10%
Maximum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges (ending)	5.25%	7.10%

Debt - Mortgage Notes Payable_4

Debt - Mortgage Notes Payable - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 1,632,902	$ 1,953,438	$ 2,191,201
Historical cost, net of accumulated depreciation, of encumbered properties	2,100,000	2,500,000
Credit Enhanced Debt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 246,700	$ 250,000

Debt - Notes - Summary of Notes

Debt - Notes - Summary of Notes Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Notes, net beginning balance	$ 5,342,329
Lump sum payoffs		$ (500,000)
Amortization of premiums/ discounts	2,248	2,820	$ 2,538
Notes, net ending balance	5,348,417	5,342,329
Fixed Rate Debt [Member] | Unsecured - Public [Member]
Debt Instrument [Line Items]
Notes, net beginning balance	5,342,329	5,835,222
Lump sum payoffs		(500,000)
Amortization of premiums/ discounts	2,248	2,820
Amortization of deferred financing costs, net	3,840	4,287
Notes, net ending balance	$ 5,348,417	$ 5,342,329	$ 5,835,222

Debt - Notes - Summary of Certa

Debt - Notes - Summary of Certain Interest Rate and Maturity Date Information (Details) - Notes [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.51%	3.61%
Maturity Date Ranges, Start	2025	2025
Maturity Date Ranges, End	2047	2047
Minimum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges (ending)	1.85%	1.85%
Maximum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges (ending)	7.57%	7.57%

Debt - Notes Additional Informa

Debt - Notes Additional Information (Details)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Shelf registration statement effective date	2022-05
Shelf registration statement expiry date	2025-05

Debt - Line of Credit and Comme

Debt - Line of Credit and Commercial Paper - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Commercial paper balance outstanding	$ 410,000,000	$ 1,000,000,000
Maximum [Member]
Line of Credit Facility [Line Items]
Commercial paper balance outstanding	$ 1,000,000,000
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Weighted average interest rates	5.47%	1.52%
Weighted average amount outstanding	$ 276,000,000	$ 156,100,000
Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Unsecured revolving credit facility	$ 2,500,000,000	2,500,000,000
Debt instrument, maturity date	Oct. 26, 2027
Ability to increase LOC facility	$ 750,000,000
Debt instrument, basis spread on variable rate	0.725%
Percentage points of line of credit facility commitment fee	0.125%
Commercial paper balance outstanding	$ 410,000,000	130,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility	$ 0	$ 0

Debt - Line of Credit and Com_2

Debt - Line of Credit and Commercial Paper - Summary of Certain Weighted Average Interest Rate, Maturity and Amount Outstanding Information for the Commercial Paper Program (Details) - Commercial Paper [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.47%	1.52%
Weighted Average Maturity (in days)	14 days	4 days
Weighted Average Amounts Outstanding	$ 276	$ 156.1

Debt - Line of Credit and Com_3

Debt - Line of Credit and Commercial Paper - Schedule of Unsecured Revolving Credit Facility (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Commercial paper balance outstanding	$ (410,000,000)	$ (1,000,000,000)
Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Unsecured revolving credit facility commitment	2,500,000,000	2,500,000,000
Commercial paper balance outstanding	(410,000,000)	(130,000,000)
Other restricted amounts	(3,415,000)	(3,463,000)
Unsecured revolving credit facility availability	$ 2,086,585,000	$ 2,366,537,000

Debt - Other - Summary of Debt

Debt - Other - Summary of Debt Extinguishment Costs Recorded as Additional Expense (Details) - Other [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Extinguishment Of Debt [Line Items]
Write-offs of unamortized deferred financing costs	$ 1,143	$ 717	$ 744
Write-offs of unamortized (premiums)/discounts/OCI		3,947
Total	$ 1,143	$ 4,664	$ 744

Debt - Summary of Aggregate Pay

Debt - Summary of Aggregate Payments of Principal on All Debt (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Debt Disclosure [Abstract]
2024	$ 416,200
2025	458,100
2026	601,025
2027	409,800
2028	910,700
Thereafter	4,668,832
Subtotal	7,464,657
Deferred Financing Costs and Unamortized (Discount)	(74,207)
Total	$ 7,390,450

Debt - Summary of Aggregate P_2

Debt - Summary of Aggregate Payments of Principal on All Debt (Parenthetical) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Commercial paper balance outstanding	$ 410,000,000	$ 1,000,000,000

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) ForwardStartingSwap	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Derivative [Line Items]
Number of forward starting swaps settled | ForwardStartingSwap	9
Mortgage notes payable, net	$ 1,632,902	$ 1,953,438	$ 2,191,201
Unrealized gain (loss) on interest rate cash flow hedges, pretax, accumulated other comprehensive income (loss)	5,700	$ (2,500)
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	2,300
Proceeds from sale of portion of investment securities	2,500
Realized gain on sale of investment securities	1,600		$ 23,400
Unrealized gain on sale of investment securities	$ 13,500
Forward Starting Swaps [Member]
Derivative [Line Items]
Mortgage notes period	9 years 8 months
Mortgages [Member] | Forward Starting Swaps [Member]
Derivative [Line Items]
Secured conventional mortgage notes period	10 years
530.0 Million of Ten-Year Secured Conventional Mortgage Notes [Member] | Locked Interest Rate Secured Notes [Member]
Derivative [Line Items]
Amount received to settle forward starting swaps	$ 27,100
Mortgage notes payable, net	530,000
550.0 Million of Secured Notes [Member]
Derivative [Line Items]
Mortgage notes payable, net	550,000
550.0 Million of Ten-Year Secured Conventional Mortgage Notes [Member]
Derivative [Line Items]
Interest expense	1,900
Increase (decrease) in charges hedge termination activities	$ 25,200

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Valuations for Each Type of Fair Value Measurement (Details)	12 Months Ended
	Dec. 31, 2023
Employee Holdings Within The Supplemental Executive Retirement Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”)
Valuation Inputs	Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets.
Redeemable Noncontrolling Interests Operating Partnership Redeemable Limited Partners
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners
Valuation Inputs	Quoted market price of Common Shares.
Mortgage Notes Payable And Private Unsecured Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable)
Valuation Inputs	Indicative rates provided by lenders of similar loans.
Public Unsecured Notes
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Public unsecured notes
Valuation Inputs	Quoted market prices for each underlying issuance.
Derivatives
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Derivatives
Valuation Inputs	Readily observable market parameters such as forward yield curves and credit default swap data.

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	$ 7,390,450	$ 7,425,722
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	6,856,194	6,678,015
Mortgage Notes Payable, Net [Member] | Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	1,632,902	1,953,438
Mortgage Notes Payable, Net [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	1,509,706	1,803,525
Unsecured Debt [Member] | Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	5,757,548	5,472,284
Unsecured Debt [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	$ 5,346,488	$ 4,874,490

Fair Value Measurements - Sum_3

Fair Value Measurements - Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		$ 155,109
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Other Liabilities, Fair Value Disclosure		$ 134,455
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	$ 289,248	318,273	$ 498,977	$ 338,951
Forward Starting Swaps [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		21,864
Other Liabilities, Fair Value Disclosure		1,210
SERP [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure	108,478	133,245
Other Liabilities, Fair Value Disclosure	108,478	133,245
Fair Value, Inputs, Level 1 [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		133,245
Other Liabilities, Fair Value Disclosure		133,245
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	0	0
Fair Value, Inputs, Level 1 [Member] | Forward Starting Swaps [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		0
Other Liabilities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | SERP [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure	108,478	133,245
Other Liabilities, Fair Value Disclosure	108,478	133,245
Fair Value, Inputs, Level 2 [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		21,864
Other Liabilities, Fair Value Disclosure		1,210
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	289,248	318,273
Fair Value, Inputs, Level 2 [Member] | Forward Starting Swaps [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		21,864
Other Liabilities, Fair Value Disclosure		1,210
Fair Value, Inputs, Level 2 [Member] | SERP [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure	0	0
Other Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		0
Other Liabilities, Fair Value Disclosure		0
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	0	0
Fair Value, Inputs, Level 3 [Member] | Forward Starting Swaps [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure		0
Other Liabilities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | SERP [Member]
Derivatives, Fair Value [Line Items]
Other Assets, Fair Value Disclosure	0	0
Other Liabilities, Fair Value Disclosure	$ 0	$ 0

Fair Value Measurements - Sum_4

Fair Value Measurements - Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivative	$ 4,514	$ 20,654
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	$ (3,737)	$ (11,071)	$ (9,394)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Debt	Interest Expense, Debt	Interest Expense, Debt
Forward Starting Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivative	$ 4,514	$ 20,654
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	$ (3,737)	$ (11,071)	$ (9,394)

Fair Value Measurements - Sum_5

Fair Value Measurements - Summary of Real Estate Technology Investment Securities included in Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Real Estate Technology Investments	$ 19,312	$ 4,312

Earnings Per Share and Earnin_3

Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 868,488	$ 806,995	$ 1,396,714
Allocation to Noncontrolling Interests – Operating Partnership	(26,710)	(26,310)	(45,900)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(6,340)	(3,774)	(17,964)
Preferred distributions	(3,090)	(3,090)	(3,090)
Net income available to Common Shares	832,348	773,821	1,329,760
Numerator for net income per share – diluted	$ 859,058	$ 800,131	$ 1,375,660
Weighted average Common Shares outstanding	378,773	376,209	373,833
OP Units	11,181	11,836	12,263
Dilutive Securities Options	943	1,402	1,924
ATM forward sales		3	69
Denominator for net income per share – diluted	390,897	389,450	388,089
Earnings Per Share, Basic	$ 2.2	$ 2.06	$ 3.56
Earnings Per Share, Diluted	$ 2.2	$ 2.05	$ 3.54

Earnings Per Share and Earnin_4

Earnings Per Share and Earnings Per Unit - Computation of Net Income per Unit Basic and Net Income per Unit Diluted for Operating Partnership (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 868,488	$ 806,995	$ 1,396,714
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	$ (6,340)	$ (3,774)	$ (17,964)
Dilutive Securities Options	943	1,402	1,924
ATM forward sales		3	69
Denominator for net income per share – diluted	390,897	389,450	388,089
Earnings Per Share, Basic	$ 2.2	$ 2.06	$ 3.56
Earnings Per Share, Diluted	$ 2.2	$ 2.05	$ 3.54
ERPOP [Member]
Net income	$ 868,488	$ 806,995	$ 1,396,714
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(6,340)	(3,774)	(17,964)
Allocation to Preference Units	(3,090)	(3,090)	(3,090)
Numerator for net income per Unit – basic and diluted	$ 859,058	$ 800,131	$ 1,375,660
Denominator for net income per Unit – basic	389,954	388,045	386,096
Dilutive Securities Options	943	1,402	1,924
ATM forward sales		3	69
Denominator for net income per share – diluted	390,897	389,450	388,089
Earnings Per Share, Basic	$ 2.2	$ 2.06	$ 3.56
Earnings Per Share, Diluted	$ 2.2	$ 2.05	$ 3.54

Share Incentive Plans - Additio

Share Incentive Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant	8,213,508
Individual potential target award minimum	0%
Individual potential target award maximum	200%
Percent of award target performance metric	50%
Percentage of distribution payments	10%
Compensation information
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized	$ 10.7
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	1 year 4 months 2 days
Share-based compensation arrangement by share-based payment award, options, exercisable, number		3,549,325	3,710,888
Share-based compensation arrangement by share-based payment award, options, exercisable, weighted average exercise price		$ 60.8	$ 58.7
Stock Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	11,331,958

Share Incentive Plans - Summary

Share Incentive Plans - Summary of Terms of Awards Generally Granted to Employees (Details)	12 Months Ended
	Dec. 31, 2023
Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Overview	Options exercised after vesting result in issuance of new Common Shares.
Grant/Exercise Price	Granted at the fair market value of Common Shares as of the grant date using the Black-Scholes model as described below.
Vesting Period	3 years
Expiration	10 years
Upon Employee Termination	Unvested options are canceled.
Restricted Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Overview	Restricted shareholders generally have the same voting rights and receive quarterly dividend payments on their shares at the same rate and on the same date as any other Common Share holder (1).
Grant/Exercise Price	Granted at the fair market value of Common Shares as of the grant date.
Vesting Period	3 years
Upon Employee Termination	Unvested restricted shares are canceled.
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Overview	When certain conditions are met, restricted units convert into an equal number of OP Units, which the holder may exchange for Common Shares on a one-for-one basis or at the option of the Company the cash value of such shares. Restricted unitholders receive quarterly distribution payments on their restricted units at the same rate and on the same date as any other OP Unit holder (1).
Grant/Exercise Price	Granted at varying discount rates to the fair market value of Common Shares as of the grant date (2).
Vesting Period	3 years
Expiration	10 years
Upon Employee Termination	Unvested restricted units are canceled.

Share Incentive Plans - Summa_2

Share Incentive Plans - Summary of Valuation Method of Share Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	23.80%	21.70%	21.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years	5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	3.30%	3.26%	3.23%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	4.04%	1.66%	0.50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price	$ 66.59	$ 91.59	$ 67.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 12.67	$ 12.57	$ 7.96

Share Incentive Plans - Summa_3

Share Incentive Plans - Summary of Valuation Method of Share Options (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Historical period of estimated volatility	5 years

Share Incentive Plans - Summa_4

Share Incentive Plans - Summary of Weighted Average Fair Value for Each Restricted Share/Unit (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value per restricted share	$ 66.93	$ 80.52	$ 70.46
LTI Awards [Member] | Restricted Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value per restricted share	61.18	96.84	61.73
LTI Awards [Member] | Restricted Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value per restricted share	$ 58.78	$ 93.32	$ 59.82

Share Incentive Plans - Summa_5

Share Incentive Plans - Summary of Terms of Each Retirement Eligibility Category (Details)	12 Months Ended
	Dec. 31, 2023
Age 62 for Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Eligibility	For employees hired prior to January 1, 2009 and who were age 59 or older as of February 1, 2019.
Effect on unvested restricted shares, restricted units and Options	Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions.
Effect on LTI Plan	Awards are prorated in proportion to the number of days worked in the first year of the three-year performance period and the individual does not receive any payout of shares or units until the final payout is determined at the end of the three-year performance period.
Rule of 70 for Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Eligibility	All employees (1).
Effect on unvested restricted shares, restricted units and Options	Awards continue to vest per the original vesting schedule, subject to certain conditions, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions.
Effect on LTI Plan	Awards are prorated in proportion to the number of days worked in the first year of the three-year performance period and the individual does not receive any payout of shares or units until the final payout is determined at the end of the three-year performance period.
Age 72 for Trustees [Member]
Defined Benefit Plan Disclosure [Line Items]
Eligibility	All non-employee Trustees.
Effect on unvested restricted shares, restricted units and Options	Awards immediately vest, Options continue to be exercisable for the balance of the applicable ten-year option period and restricted units are still subject to the book-up provisions.
Effect on LTI Plan	Awards are prorated in proportion to the number of days worked in the first year of the three-year performance period and the individual does not receive any payout of shares or units until the final payout is determined at the end of the three-year performance period.

Share Incentive Plans - Schedul

Share Incentive Plans - Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Compensation information
Compensation Expense	$ 31,815	$ 29,513	$ 27,810
Compensation Capitalized	1,848	1,510	1,430
Restricted Units In-Lieu of Bonus	525	2,793	1,038
Compensation Equity	34,188	33,816	30,278
Dividends Incurred	1,793	2,159	2,015
Restricted Shares [Member]
Compensation information
Compensation Expense	11,006	10,419	7,258
Compensation Capitalized	1,480	1,176	1,131
Restricted Units In-Lieu of Bonus	0	0	0
Compensation Equity	12,486	11,595	8,389
Dividends Incurred	889	1,120	761
Restricted Stock Units (RSUs) [Member]
Compensation information
Compensation Expense	15,809	16,487	16,689
Compensation Capitalized	96	87	70
Restricted Units In-Lieu of Bonus	525	2,530	1,038
Compensation Equity	16,430	19,104	17,797
Dividends Incurred	904	1,039	1,254
Options [Member]
Compensation information
Compensation Expense	4,436	1,889	2,980
Compensation Capitalized	192	169	121
Restricted Units In-Lieu of Bonus	0	263	0
Compensation Equity	4,628	2,321	3,101
Dividends Incurred	0	0	0
Employee Share Purchase Plan Discount [Member]
Compensation information
Compensation Expense	564	718	883
Compensation Capitalized	80	78	108
Restricted Units In-Lieu of Bonus	0	0	0
Compensation Equity	644	796	991
Dividends Incurred	$ 0	$ 0	$ 0

Share Incentive Plans - Award A

Share Incentive Plans - Award Activity of the Share Incentive Plans (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Common Shares Subject to Options, Awards exercised/vested	(495,690)	(468,021)	(1,710,692)
Employee Stock Option [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Common Shares Subject to Options, Beginning Balance	4,061,360	4,387,833	5,642,752
Common Shares Subject to Options, Awards granted	395,280	164,199	489,853
Common Shares Subject to Options, Awards exercised/vested	(495,690)	(468,021)	(1,710,692)
Common Shares Subject to Options, Awards forfeited	(1,717)	(12,968)	(23,317)
Common Shares Subject to Options, Awards expired	(981)	(9,683)	(10,763)
Common Shares Subject to Options, Ending Balance	3,958,252	4,061,360	4,387,833
Weighted Average Exercise Price per Option, Beginning Balance	$ 62.6	$ 60.65	$ 56.91
Weighted Average Exercise Price per Option, Awards granted	66.56	88.22	67.58
Weighted Average Exercise Price per Option, Awards exercised/vested	48.52	52.87	50.09
Weighted Average Exercise Price per Option, Awards forfeited	66.73	77.29	73.33
Weighted Average Exercise Price per Option, Awards expired	67.5	60.02	68
Weighted Average Exercise Price per Option, Ending Balance	$ 64.76	$ 62.6	$ 60.65
Restricted Shares [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Restricted Shares, Beginning Balance	289,918	309,876	353,634
Restricted Shares, Awards granted	152,217	182,801	96,224
Restricted Shares, Awards exercised/vested	(118,322)	(194,533)	(133,351)
Restricted Shares, Awards forfeited	(3,743)	(8,226)	(6,631)
Restricted Shares, Awards Expired	0	0	0
Restricted Shares, Ending Balance	320,070	289,918	309,876
Weighted Average Fair Value per Restricted Share, Beginning Balance	$ 81.21	$ 75.17	$ 71.81
Weighted Average Fair Value per Restricted Share, Awards granted	66.93	80.52	70.46
Weighted Average Fair Value per Restricted Share, Awards exercised/vested	80.76	70.91	62.89
Weighted Average Fair Value per Restricted Share, Awards forfeited	76.43	82.02	74.31
Weighted Average Fair Value per Restricted Share, Awards Expired	0	0	0
Weighted Average Fair Value per Restricted Share, Ending Balance	$ 74.64	$ 81.21	$ 75.17
Restricted Units [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Restricted Units, Beginning Balance	953,674	853,431	879,800
Restricted Units, Awards Granted	236,031	223,242	190,742
Restricted Units, Awards exercised/vested	(75,105)	(122,999)	(181,531)
Restricted Units, Awards forfeited	(70,667)	0	(35,580)
Restricted Units, Awards Expired	0	0	0
Restricted Units, Ending Balance	1,043,933	953,674	853,431
Weighted Average Fair Value per Restricted Unit, Beginning Balance	$ 73.57	$ 66.11	$ 66.78
Weighted Average Fair Value per Restricted Unit, Awards granted	60.38	86.47	60.71
Weighted Average Fair Value per Restricted Unit, Awards exercised/vested	76.38	66.1	62.01
Weighted Average Fair Value per Restricted Unit, Awards forfeited	59.14	0	59.82
Weighted Average Fair Value per Restricted Unit, Awards Expired	0	0	0
Weighted Average Fair Value per Restricted Unit, Ending Balance	$ 68.56	$ 73.57	$ 66.11

Share Incentive Plans - Award_2

Share Incentive Plans - Award Activity of Stock Options, Restricted Shares and Restricted Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Weighted average grant date fair value per share for Options granted	$ 12.67	$ 12.57	$ 7.96
Employee Stock Option [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Weighted average grant date fair value per share for Options granted	$ 12.61	$ 12.45	$ 7.98
Aggregate intrinsic value of Options exercised	$ 6,023	$ 14,511	$ 47,413
Restricted Shares [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	7,783	17,353	9,222
Restricted Units [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$ 4,965	$ 10,662	$ 12,468

Share Incentive Plans - Informa

Share Incentive Plans - Information Regarding Options Outstanding and Exercisable (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Options Outstanding, Options | shares	3,958,252
Options Exercisable, Options | shares	3,342,785
Options, Vested and expected to vest | shares	611,238
Options Outstanding, Weighted Average Remaining Contractual Life in Years	4 years 9 months 21 days
Options Exercisable, Weighted Average Remaining Contractual Life in Years	4 years 1 month 13 days
Options Vested and expected to vest, Weighted Average Remaining Contractual Life in Years	8 years 6 months 14 days
Options Outstanding, Weighted Average Exercise Price | $ / shares	$ 64.76
Options Exercisable, Weighted Average Exercise Price | $ / shares	63.83
Vested and expected to vest, Weighted Average Exercise Price | $ / shares	$ 69.8
Options Outstanding, Aggregate Intrinsic Value | $	$ 2,889
Options Exercisable, Aggregate Intrinsic Value | $	$ 2,889

Share Incentive Plans - Infor_2

Share Incentive Plans - Information Regarding Options Outstanding and Exercisable (Parenthetical) (Details)	Dec. 31, 2023 $ / shares
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Market value of common shares	$ 61.16

Employee Plans - Additional Inf

Employee Plans - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Value of common shares that can be acquired by the employee and trustees under employees share purchase plan	$ 100,000
Number of common shares authorized after amendment	7,000,000
Common Shares available for purchase under the ESPP	2,418,463
Purchase price of common stock	85%
Maximum eligible compensation percentage for the defined contribution plan (the 401(k) Plan)	4%
Defined contribution plan vesting period	5 years
Defined contribution plan, compensation expense	$ 5,200,000	$ 4,800,000	$ 4,900,000
Highly Compensated Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum eligible compensation percentage for the defined contribution plan (the 401(k) Plan)	3%

Employee Plans - Summary of Inf

Employee Plans - Summary of Information Regarding the Common Shares Issued Under the ESPP (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement, Additional Disclosure [Abstract]
Shares issued	68,136	66,835	70,702
Issuance price ranges, Minimum	$ 47.97	$ 52.33	$ 53.13
Issuance price ranges, Maximum	$ 55.11	$ 72.51	$ 71.04
Issuance proceeds	$ 3,517	$ 4,178	$ 4,265

Distribution Reinvestment Plan

Distribution Reinvestment Plan - Additional Information (Details) - shares	Dec. 31, 2023	Sep. 30, 2014
Distribution Reinvestment And Share Purchase Plan [Abstract]
Common shares registered with distribution reinvestment and share purchase Plan (2014 DRIP)		4,790,000
Number of shares available for issuance	4,619,250

Transactions with Related Par_2

Transactions with Related Parties - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Lease expiration date	Nov. 30, 2032
Lease extension options	two five-year
Related Party [Member]
Related Party Transaction [Line Items]
Amount incurred for leased office space	$ 1.9	$ 1.7	$ 1.7

Commitments and Contingencies -

Commitments and Contingencies - Summary of Real Estate Development Commitments (Details) $ in Thousands	Dec. 31, 2023 USD ($) Apartment Project
Projects Under Development Consolidated [Member]
Projects/Investments/Units/Remaining Commitments schedule
Number of consolidated projects in various stages of development | Project	1
Apartment Units | Apartment	225
Consolidated project under development commitment fund | $	$ 74,585
Projects Under Development Unconsolidated [Member]
Projects/Investments/Units/Remaining Commitments schedule
Number of unconsolidated projects in various stages of development | Project	6
Apartment Units | Apartment	1,982
Unconsolidated project under development commitment fund | $	$ 144,928
Projects Under Development [Member]
Projects/Investments/Units/Remaining Commitments schedule
Number of projects in various stages of development | Project	7
Apartment Units | Apartment	2,207
Project under development commitment fund | $	$ 219,513

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Real Estate Development Commitments (Parenthetical) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Projects/Investments/Units/Remaining Commitments schedule
Total project costs remaining under development commitment fund	$ 219.5
Parent
Projects/Investments/Units/Remaining Commitments schedule
Total project costs remaining under development commitment fund	76.6
Corporate Joint Venture
Projects/Investments/Units/Remaining Commitments schedule
Total project costs remaining under development commitment fund	0.7
Construction Loans
Projects/Investments/Units/Remaining Commitments schedule
Total project costs remaining under development commitment fund	$ 142.2

Commitments and Contingencies_3

Commitments and Contingencies - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) Investment Agreement	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Commitments And Contingencies [Abstract]
Number of real estate investment funds | Investment	10
Real estate investment funds	$ 38.8
Real estate technology and other real estate investments commitment funds	19.2
Compensation expense, recognized	$ 0.6	$ (0.2)	$ 0.1
Number of deferred compensation agreement with former executive officer | Agreement	1

Commitments and Contingencies_4

Commitments and Contingencies - Schedule of Contractual Obligations (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Other Long-Term Liabilities:
Deferred Compensation Due, Year 1	$ (840)
Deferred Compensation Due, Year 2	(840)
Deferred Compensation Due, Year 3	(840)
Deferred Compensation Due, Year 4	(840)
Deferred Compensation Due, Year 5	(840)
Deferred Compensation Due, Thereafter	(3,778)
Deferred Compensation Due, Total	$ (7,978)

Reportable Segments - Additiona

Reportable Segments - Additional Information (Details) - Customer	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Number of customer contributed 10% or more of total revenue	0	0	0
Non-residential Leases [Member] | Revenue [Member] | Revenue Concentration Risk [Member] | Maximum [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	4%

Reportable Segments - Reconcili

Reportable Segments - Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
Property and maintenance expense	(514,575)	(483,865)	(453,532)
Real estate taxes and insurance expense	(412,114)	(388,412)	(397,105)
Total operating expenses	(926,689)	(872,277)	(850,637)
Operating income	1,947,275	1,862,903	1,613,360
Operating income	$ 1,160,585	$ 1,116,046	$ 1,675,841

Reportable Segments - NOI from

Reportable Segments - NOI from Our Rental Real Estate for Each Segment Specific to Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
Operating expenses	926,689	872,277	850,637
Operating income	1,947,275	1,862,903	1,613,360
Operating income	1,160,585	1,116,046	1,675,841
Total Assets	20,034,564	20,218,262
Capital Expenditures	319,342	221,086
Same Store
Segment Reporting Information [Line Items]
Rental income	2,754,711	2,609,766	2,291,604
Operating expenses	873,448	837,602	774,504
Operating income	1,881,263	1,772,164	1,517,100
Total Assets	17,790,858	18,314,739
Capital Expenditures	282,845	204,135
Non-same store/other
Segment Reporting Information [Line Items]
Rental income	119,253	125,414	172,393
Operating expenses	53,241	34,675	76,133
Operating income	66,012	90,739	96,260
Total Assets	2,243,706	1,903,523
Capital Expenditures	36,497	16,951
Los Angeles | Same Store
Segment Reporting Information [Line Items]
Rental income	466,980	450,635	431,954
Operating expenses	143,983	132,858	132,274
Operating income	322,997	317,777	299,680
Total Assets	2,489,180	2,549,606
Capital Expenditures	54,688	35,057
Orange County | Same Store
Segment Reporting Information [Line Items]
Rental income	130,343	122,660	109,427
Operating expenses	28,699	26,511	24,986
Operating income	101,644	96,149	84,441
Total Assets	343,219	356,396
Capital Expenditures	9,888	7,885
San Diego | Same Store
Segment Reporting Information [Line Items]
Rental income	92,691	86,728	78,709
Operating expenses	20,602	19,506	18,395
Operating income	72,089	67,222	60,314
Total Assets	231,549	228,471
Capital Expenditures	17,137	8,798
Subtotal - Southern California | Same Store
Segment Reporting Information [Line Items]
Rental income	690,014	660,023	620,090
Operating expenses	193,284	178,875	175,655
Operating income	496,730	481,148	444,435
Total Assets	3,063,948	3,134,473
Capital Expenditures	81,713	51,740
Washington D.C. | Same Store
Segment Reporting Information [Line Items]
Rental income	441,676	417,210	389,205
Operating expenses	140,696	138,570	129,065
Operating income	300,980	278,640	260,140
Total Assets	2,995,509	3,091,996
Capital Expenditures	50,504	34,640
San Francisco | Same Store
Segment Reporting Information [Line Items]
Rental income	430,390	415,173	383,817
Operating expenses	129,480	124,192	118,795
Operating income	300,910	290,981	265,022
Total Assets	2,972,476	3,049,771
Capital Expenditures	53,963	33,497
New York | Same Store
Segment Reporting Information [Line Items]
Rental income	476,319	434,820	367,370
Operating expenses	193,311	187,218	182,631
Operating income	283,008	247,602	184,739
Total Assets	3,326,831	3,421,373
Capital Expenditures	21,908	21,636
Seattle | Same Store
Segment Reporting Information [Line Items]
Rental income	290,894	281,959	256,988
Operating expenses	81,787	79,037	80,775
Operating income	209,107	202,922	176,213
Total Assets	2,075,966	2,141,346
Capital Expenditures	34,011	27,935
Boston | Same Store
Segment Reporting Information [Line Items]
Rental income	289,423	270,899	235,050
Operating expenses	85,579	82,523	76,374
Operating income	203,844	188,376
Operating income			158,676
Total Assets	1,748,887	1,807,629
Capital Expenditures	30,852	23,951
Denver | Same Store
Segment Reporting Information [Line Items]
Rental income	71,067	67,785	39,084
Operating expenses	21,328	19,569	11,209
Operating income	49,739	48,216	27,875
Total Assets	824,264	857,021
Capital Expenditures	4,220	8,561
Other Expansion Markets | Same Store
Segment Reporting Information [Line Items]
Rental income	64,928	61,897
Operating expenses	27,983	27,618
Operating income	36,945	34,279
Total Assets	782,977	811,130
Capital Expenditures	5,674	2,175
Non-same store | Non-same store/other
Segment Reporting Information [Line Items]
Rental income	100,970	74,379	59,629
Operating expenses	36,836	29,758	27,691
Operating income	64,134	44,621	31,938
Total Assets	1,493,139	1,134,000
Capital Expenditures	35,615	15,277
Other | Non-same store/other
Segment Reporting Information [Line Items]
Rental income	18,283	51,035	112,764
Operating expenses	(16,405)	4,917	48,442
Operating income	1,878	46,118	$ 64,322
Total Assets	750,567	769,523
Capital Expenditures	$ 882	$ 1,674

Reportable Segments - NOI fro_2

Reportable Segments - NOI from Our Rental Real Estate for Each Segment Specific to Continuing Operations (Parenthetical) (Details) - Property	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Units in same store properties	76,297	76,297	72,872

Subsequent Events - Disposed Pr

Subsequent Events - Disposed Properties to Unaffiliated Parties (Details) $ in Thousands		12 Months Ended
	Jan. 01, 2024 USD ($) Property ApartmentUnit	Dec. 31, 2023 USD ($) ApartmentUnit Property	Dec. 31, 2022 USD ($) Property ApartmentUnit
Subsequent Event [Line Items]
Properties disposed | Property		11	3
Property units disposed | ApartmentUnit		912	945
Sales Price | $		$ 379,893	$ 746,150
Rental Properties – Consolidated [Member]
Subsequent Event [Line Items]
Properties disposed | Property		11	3
Property units disposed | ApartmentUnit		912	945
Sales Price | $		$ 379,893	$ 746,150
Subsequent Events [Member]
Subsequent Event [Line Items]
Properties disposed | Property	3
Property units disposed | ApartmentUnit	504
Sales Price | $	$ 248,500
Subsequent Events [Member] | Rental Properties – Consolidated [Member]
Subsequent Event [Line Items]
Properties disposed | Property	3
Property units disposed | ApartmentUnit	504
Sales Price | $	$ 248,500

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) shares in Millions	Jan. 01, 2024 shares
Subsequent Events [Member]
Subsequent Event [Line Items]
Stock repurchase program, number of shares authorized to be repurchased	13

Schedule III - Real Estate an_2

Schedule III - Real Estate and Accumulated Depreciation-Overall Summary (Details)	Dec. 31, 2023 USD ($) ApartmentUnit Property	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Overall summary of real estate and accumulated depreciation
Investment in Real Estate, Gross	$ 28,712,638,000	$ 28,088,754,000	$ 28,272,906,000	$ 27,203,325,000
Accumulated Depreciation	$ (9,810,337,000)	$ (9,027,850,000)	$ (8,354,282,000)	$ (7,859,657,000)
Investment in Real Estate - Wholly Owned Unencumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	255
Units | ApartmentUnit	68,916
Investment in Real Estate, Gross	$ 24,800,990,957
Accumulated Depreciation	(8,491,300,503)
Investment in Real Estate, Net	16,309,690,454
Encumbrances	$ 0
Investment in Real Estate - Wholly Owned Encumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	33
Units | ApartmentUnit	8,215
Investment in Real Estate, Gross	$ 3,097,180,778
Accumulated Depreciation	(1,052,189,478)
Investment in Real Estate, Net	2,044,991,300
Encumbrances	$ 1,604,630,478
Wholly Owned Properties
Overall summary of real estate and accumulated depreciation
Properties | Property	288
Units | ApartmentUnit	77,131
Investment in Real Estate, Gross	$ 27,898,171,735
Accumulated Depreciation	(9,543,489,981)
Investment in Real Estate, Net	18,354,681,754
Encumbrances	$ 1,604,630,478
Investment in Real Estate - Partially Owned Unencumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	13
Units | ApartmentUnit	2,792
Investment in Real Estate, Gross	$ 779,454,558
Accumulated Depreciation	(244,736,257)
Investment in Real Estate, Net	534,718,301
Encumbrances	$ 0
Investment in Real Estate - Partially Owned Encumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	1
Units | ApartmentUnit	268
Investment in Real Estate, Gross	$ 35,011,634
Accumulated Depreciation	(22,111,181)
Investment in Real Estate, Net	12,900,453
Encumbrances	$ 28,271,943
NONCONTROLLING INTERESTS - PARTIALLY OWNED PROPERTIES
Overall summary of real estate and accumulated depreciation
Properties | Property	14
Units | ApartmentUnit	3,060
Investment in Real Estate, Gross	$ 814,466,192
Accumulated Depreciation	(266,847,438)
Investment in Real Estate, Net	547,618,754
Encumbrances	$ 28,271,943
Unencumbered Properties [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	268
Units | ApartmentUnit	71,708
Investment in Real Estate, Gross	$ 25,580,445,515
Accumulated Depreciation	(8,736,036,760)
Investment in Real Estate, Net	16,844,408,755
Encumbrances	$ 0
Encumbered Properties [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	34
Units | ApartmentUnit	8,483
Investment in Real Estate, Gross	$ 3,132,192,412
Accumulated Depreciation	(1,074,300,659)
Investment in Real Estate, Net	2,057,891,753
Encumbrances	$ 1,632,902,421
Total Consolidated Investment in Real Estate [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	302
Units | ApartmentUnit	80,191
Investment in Real Estate, Gross	$ 28,712,637,927
Accumulated Depreciation	(9,810,337,419)
Investment in Real Estate, Net	18,902,300,508
Encumbrances	$ 1,632,902,421

Schedule III - Real Estate an_3

Schedule III - Real Estate and Accumulated Depreciation-Encumbrances Reconciliation (Details)	Dec. 31, 2023 USD ($) Property
Total Consolidated Investment in Real Estate [Member]
Overall summary of real estate and accumulated depreciation
Encumbrances	$ 1,632,902,421
Archstone Master Property [Member]
Real Estate and Accumulated Depreciation Encumbrances Reconciliation [Abstract]
Number of Properties Encumbered | Property	8
Overall summary of real estate and accumulated depreciation
Encumbrances	$ 546,784,016
Portfolio Entity Encumbrances [Member]
Real Estate and Accumulated Depreciation Encumbrances Reconciliation [Abstract]
Number of Properties Encumbered | Property	8
Overall summary of real estate and accumulated depreciation
Encumbrances	$ 546,784,016
Individual Property Encumbrances [Member]
Overall summary of real estate and accumulated depreciation
Encumbrances	$ 1,086,118,405

Schedule III - Real Estate an_4

Schedule III - Real Estate and Accumulated Depreciation - Summary of Changes in Real Estate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in total real estate
Balance, beginning of year	$ 28,088,754	$ 28,272,906	$ 27,203,325
Acquisitions and development	500,221	214,903	1,912,579
Improvements	321,082	225,136	152,715
Dispositions and other	(197,419)	(624,191)	(995,713)
Balance, end of year	$ 28,712,638	$ 28,088,754	$ 28,272,906

Schedule III - Real Estate an_5

Schedule III - Real Estate and Accumulated Depreciation - Summary of Changes in Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in accumulated depreciation
Balance, beginning of year	$ 9,027,850	$ 8,354,282	$ 7,859,657
Depreciation	888,709	882,168	838,272
Dispositions and other	(106,222)	(208,600)	(343,647)
Balance, end of year	$ 9,810,337	$ 9,027,850	$ 8,354,282

Schedule III - Real Estate an_6

Schedule III - Real Estate and Accumulated Depreciation (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) ApartmentUnit	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Real Estate And Accumulated Depreciation Abstract
Accumulated Depreciation	$ (9,810,337,000)	$ (9,027,850,000)	$ (8,354,282,000)	$ (7,859,657,000)
100 K Apartments (fka 100K Street) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	222
Initial Cost to Company, Land	$ 15,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	70,296,069
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	300,905
Gross Amount Carried at close of period 12/31/2023, Land	15,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	70,596,974
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	86,196,974
Accumulated Depreciation	(14,897,778)
Investment in Real Estate, Net	71,299,196
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
170 Amsterdam [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	236
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	112,096,955
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,076,420
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	113,173,375
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	113,173,375
Accumulated Depreciation	(38,535,035)
Investment in Real Estate, Net	74,638,340
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
175 Kent [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Brooklyn, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	113
Initial Cost to Company, Land	$ 22,037,831
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	53,962,169
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,841,342
Gross Amount Carried at close of period 12/31/2023, Land	22,037,831
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	56,803,511
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	78,841,342
Accumulated Depreciation	(26,115,759)
Investment in Real Estate, Net	52,725,583
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
180 Montague (fka Brooklyn Heights) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Brooklyn, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	193
Initial Cost to Company, Land	$ 32,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	92,675,228
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,202,414
Gross Amount Carried at close of period 12/31/2023, Land	32,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	98,877,642
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	131,277,642
Accumulated Depreciation	(41,299,986)
Investment in Real Estate, Net	89,977,656
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
180 Riverside Boulevard [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	516
Initial Cost to Company, Land	$ 144,968,250
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	138,346,681
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	23,000,194
Gross Amount Carried at close of period 12/31/2023, Land	144,968,250
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	161,346,875
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	306,315,125
Accumulated Depreciation	(102,045,821)
Investment in Real Estate, Net	204,269,304
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
1210 Mass [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	144
Initial Cost to Company, Land	$ 9,213,512
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	36,559,189
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,031,243
Gross Amount Carried at close of period 12/31/2023, Land	9,213,512
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,590,432
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	51,803,944
Accumulated Depreciation	(26,263,816)
Investment in Real Estate, Net	25,540,128
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
1401 Joyce on Pentagon Row [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	326
Initial Cost to Company, Land	$ 9,780,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	89,668,165
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,670,778
Gross Amount Carried at close of period 12/31/2023, Land	9,780,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	99,338,943
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	109,118,943
Accumulated Depreciation	(51,888,815)
Investment in Real Estate, Net	57,230,128
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
1500 Mass Ave [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	556
Initial Cost to Company, Land	$ 54,638,298
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	40,361,702
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,275,942
Gross Amount Carried at close of period 12/31/2023, Land	54,638,298
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	58,637,644
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	113,275,942
Accumulated Depreciation	(37,775,345)
Investment in Real Estate, Net	75,500,597
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
1800 Oak (fka Rosslyn) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	314
Initial Cost to Company, Land	$ 31,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	109,005,734
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,922,635
Gross Amount Carried at close of period 12/31/2023, Land	31,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	122,928,369
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	154,328,369
Accumulated Depreciation	(52,103,605)
Investment in Real Estate, Net	102,224,764
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
2201 Pershing Drive [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	188
Initial Cost to Company, Land	$ 11,321,198
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	49,674,175
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,542,317
Gross Amount Carried at close of period 12/31/2023, Land	11,321,198
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	53,216,492
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	64,537,690
Accumulated Depreciation	(23,077,524)
Investment in Real Estate, Net	41,460,166
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
2201 Wilson [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	219
Initial Cost to Company, Land	$ 21,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	78,724,663
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,735,230
Gross Amount Carried at close of period 12/31/2023, Land	21,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	88,459,893
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	110,359,893
Accumulated Depreciation	(36,122,649)
Investment in Real Estate, Net	74,237,244
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
2400 M St [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	359
Initial Cost to Company, Land	$ 30,006,593
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	114,013,785
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,040,872
Gross Amount Carried at close of period 12/31/2023, Land	30,006,593
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	120,054,657
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	150,061,250
Accumulated Depreciation	(73,845,252)
Investment in Real Estate, Net	76,215,998
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
315 on A [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	202
Initial Cost to Company, Land	$ 14,450,070
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	115,824,930
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,728,746
Gross Amount Carried at close of period 12/31/2023, Land	14,450,070
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	118,553,676
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	133,003,746
Accumulated Depreciation	(39,985,661)
Investment in Real Estate, Net	93,018,085
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
340 Fremont (fka Rincon Hill) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	348
Initial Cost to Company, Land	$ 42,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	248,607,902
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,455,245
Gross Amount Carried at close of period 12/31/2023, Land	42,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	250,063,147
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	292,063,147
Accumulated Depreciation	(72,136,881)
Investment in Real Estate, Net	219,926,266
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
341 Nevins [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Brooklyn, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 3,621,717
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	308,661
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	3,621,717
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	308,661
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	3,930,378
Accumulated Depreciation	0
Investment in Real Estate, Net	3,930,378
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
3003 Van Ness (fka Van Ness) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	625
Initial Cost to Company, Land	$ 56,300,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	141,191,580
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,398,348
Gross Amount Carried at close of period 12/31/2023, Land	56,300,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	154,589,928
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	210,889,928
Accumulated Depreciation	(65,522,660)
Investment in Real Estate, Net	145,367,268
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
425 Broadway [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Monica, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	101
Initial Cost to Company, Land	$ 12,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	34,394,772
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,177,489
Gross Amount Carried at close of period 12/31/2023, Land	12,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,572,261
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	51,172,261
Accumulated Depreciation	(16,909,293)
Investment in Real Estate, Net	34,262,968
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
425 Mass [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	559
Initial Cost to Company, Land	$ 28,150,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	138,600,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,286,087
Gross Amount Carried at close of period 12/31/2023, Land	28,150,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	149,886,087
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	178,036,087
Accumulated Depreciation	(73,476,449)
Investment in Real Estate, Net	104,559,638
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
455 Eye Street [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	174
Initial Cost to Company, Land	$ 11,941,407
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,418,689
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	474,032
Gross Amount Carried at close of period 12/31/2023, Land	11,941,407
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	61,892,721
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	73,834,128
Accumulated Depreciation	(15,925,044)
Investment in Real Estate, Net	57,909,084
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
4th and Hill [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 13,131,456
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,868,544
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	13,131,456
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	1,868,544
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	15,000,000
Accumulated Depreciation	0
Investment in Real Estate, Net	15,000,000
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
55 West Fifth I & II (fka Townhouse Plaza and Gardens) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Mateo, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	241
Initial Cost to Company, Land	$ 21,041,710
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	71,931,323
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,881,207
Gross Amount Carried at close of period 12/31/2023, Land	21,041,710
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	90,812,530
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	111,854,240
Accumulated Depreciation	(43,587,776)
Investment in Real Estate, Net	68,266,464
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
600 Washington [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	135
Initial Cost to Company, Land	$ 32,852,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	43,140,551
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,880,600
Gross Amount Carried at close of period 12/31/2023, Land	32,852,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	48,021,151
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	80,873,151
Accumulated Depreciation	(29,111,793)
Investment in Real Estate, Net	51,761,358
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
660 Washington (fka Boston Common) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	420
Initial Cost to Company, Land	$ 106,100,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	166,311,679
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	19,921,287
Gross Amount Carried at close of period 12/31/2023, Land	106,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	186,232,966
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	292,332,966
Accumulated Depreciation	(73,269,964)
Investment in Real Estate, Net	219,063,002
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
70 Greene [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Jersey City, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	480
Initial Cost to Company, Land	$ 28,108,899
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	236,763,553
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,822,777
Gross Amount Carried at close of period 12/31/2023, Land	28,108,899
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	244,586,330
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	272,695,229
Accumulated Depreciation	(115,268,366)
Investment in Real Estate, Net	157,426,863
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
71 Broadway [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	238
Initial Cost to Company, Land	$ 22,611,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	77,492,171
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	22,156,834
Gross Amount Carried at close of period 12/31/2023, Land	22,611,600
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	99,649,005
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	122,260,605
Accumulated Depreciation	(68,010,311)
Investment in Real Estate, Net	54,250,294
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
77 Bluxome [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	102
Initial Cost to Company, Land	$ 5,249,124
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,609,876
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	808,565
Gross Amount Carried at close of period 12/31/2023, Land	5,249,124
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,418,441
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	24,667,565
Accumulated Depreciation	(8,843,983)
Investment in Real Estate, Net	15,823,582
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
77 Park Avenue (fka Hoboken) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Hoboken, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	301
Initial Cost to Company, Land	$ 27,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	168,992,440
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,758,976
Gross Amount Carried at close of period 12/31/2023, Land	27,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	180,751,416
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	208,651,416
Accumulated Depreciation	(74,020,489)
Investment in Real Estate, Net	134,630,927
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
777 Sixth [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	294
Initial Cost to Company, Land	$ 65,352,706
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	65,747,294
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,483,965
Gross Amount Carried at close of period 12/31/2023, Land	65,352,706
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	74,231,259
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	139,583,965
Accumulated Depreciation	(40,561,987)
Investment in Real Estate, Net	99,021,978
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
88 Hillside [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Daly City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	95
Initial Cost to Company, Land	$ 7,786,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	31,587,325
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,738,464
Gross Amount Carried at close of period 12/31/2023, Land	7,786,800
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	36,325,789
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	44,112,589
Accumulated Depreciation	(16,832,809)
Investment in Real Estate, Net	27,279,780
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
855 Brannan [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	449
Initial Cost to Company, Land	$ 41,363,921
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	282,730,067
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,666,205
Gross Amount Carried at close of period 12/31/2023, Land	41,363,921
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	284,396,272
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	325,760,193
Accumulated Depreciation	(68,753,861)
Investment in Real Estate, Net	257,006,332
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
929 Mass (fka 929 House) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	127
Initial Cost to Company, Land	$ 3,252,993
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	21,745,595
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,890,575
Gross Amount Carried at close of period 12/31/2023, Land	3,252,993
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	31,636,170
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	34,889,163
Accumulated Depreciation	(24,748,862)
Investment in Real Estate, Net	10,140,301
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Academy Village [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	North Hollywood, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	248
Initial Cost to Company, Land	$ 25,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	23,593,194
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,095,146
Gross Amount Carried at close of period 12/31/2023, Land	25,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	37,688,340
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	62,688,340
Accumulated Depreciation	(25,487,214)
Investment in Real Estate, Net	37,201,126
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Acappella [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Pasadena, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	143
Initial Cost to Company, Land	$ 5,839,548
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	29,360,452
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,853,851
Gross Amount Carried at close of period 12/31/2023, Land	5,839,548
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,214,303
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,053,851
Accumulated Depreciation	(16,729,407)
Investment in Real Estate, Net	21,324,444
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Alban Towers [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	229
Initial Cost to Company, Land	$ 18,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	89,794,201
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,117,051
Gross Amount Carried at close of period 12/31/2023, Land	18,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	97,911,252
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	116,811,252
Accumulated Depreciation	(40,243,353)
Investment in Real Estate, Net	76,567,899
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Alborada [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fremont, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	442
Initial Cost to Company, Land	$ 24,310,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	59,214,129
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,057,491
Gross Amount Carried at close of period 12/31/2023, Land	24,310,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	70,271,620
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	94,581,620
Accumulated Depreciation	(55,425,390)
Investment in Real Estate, Net	39,156,230
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Alcott Apartments (fka West End Tower) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	470
Initial Cost to Company, Land	$ 10,424,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	398,024,518
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	707,600
Gross Amount Carried at close of period 12/31/2023, Land	10,424,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	398,732,118
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	409,156,118
Accumulated Depreciation	(33,508,942)
Investment in Real Estate, Net	375,647,176
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Alcyone [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	162
Initial Cost to Company, Land	$ 11,379,497
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	49,360,503
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,564,761
Gross Amount Carried at close of period 12/31/2023, Land	11,379,497
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	51,925,264
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	63,304,761
Accumulated Depreciation	(18,898,816)
Investment in Real Estate, Net	44,405,945
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Altitude (fka Village at Howard Hughes, The (Lots 1 & 2)) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	545
Initial Cost to Company, Land	$ 43,783,485
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	150,234,305
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,130,013
Gross Amount Carried at close of period 12/31/2023, Land	43,783,485
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	152,364,318
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	196,147,803
Accumulated Depreciation	(45,260,093)
Investment in Real Estate, Net	150,887,710
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Alton, The (fka Millikan) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Irvine, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	344
Initial Cost to Company, Land	$ 11,049,027
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	96,523,927
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	896,714
Gross Amount Carried at close of period 12/31/2023, Land	11,049,027
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	97,420,641
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	108,469,668
Accumulated Depreciation	(27,304,190)
Investment in Real Estate, Net	81,165,478
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Arches,The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Sunnyvale, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	410
Initial Cost to Company, Land	$ 26,650,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	62,850,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,685,977
Gross Amount Carried at close of period 12/31/2023, Land	26,650,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	78,535,977
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	105,185,977
Accumulated Depreciation	(34,669,178)
Investment in Real Estate, Net	70,516,799
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Artisan on Second [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	118
Initial Cost to Company, Land	$ 8,000,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	36,074,600
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,805,294
Gross Amount Carried at close of period 12/31/2023, Land	8,000,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,879,894
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	46,880,294
Accumulated Depreciation	(18,009,181)
Investment in Real Estate, Net	28,871,113
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Artistry Emeryville (fka Emeryville) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Emeryville, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	267
Initial Cost to Company, Land	$ 12,300,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,466,267
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,843,817
Gross Amount Carried at close of period 12/31/2023, Land	12,300,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	71,310,084
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	83,610,084
Accumulated Depreciation	(32,323,930)
Investment in Real Estate, Net	51,286,154
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Atelier [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Brooklyn, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	120
Initial Cost to Company, Land	$ 32,401,680
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	47,135,432
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,091,757
Gross Amount Carried at close of period 12/31/2023, Land	32,401,680
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	48,227,189
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	80,628,869
Accumulated Depreciation	(15,712,454)
Investment in Real Estate, Net	64,916,415
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Avenue Two [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Sunnyvale, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	177
Initial Cost to Company, Land	$ 9,057,300
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,483,642
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,187,247
Gross Amount Carried at close of period 12/31/2023, Land	9,057,300
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	31,670,889
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	40,728,189
Accumulated Depreciation	(24,481,933)
Investment in Real Estate, Net	16,246,256
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Axis at Shady Grove [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Rockville, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	366
Initial Cost to Company, Land	$ 14,745,774
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	90,503,831
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	917,567
Gross Amount Carried at close of period 12/31/2023, Land	14,745,774
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	91,421,398
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	106,167,172
Accumulated Depreciation	(24,584,449)
Investment in Real Estate, Net	81,582,723
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Azure (fka Mission Bay-Block 13) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	273
Initial Cost to Company, Land	$ 32,855,115
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	153,566,841
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,170,015
Gross Amount Carried at close of period 12/31/2023, Land	32,855,115
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	155,736,856
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	188,591,971
Accumulated Depreciation	(48,623,946)
Investment in Real Estate, Net	139,968,025
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Basin The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Wakefield, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 35,866,372
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,195,498
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	35,866,372
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	15,195,498
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	51,061,870
Accumulated Depreciation	0
Investment in Real Estate, Net	51,061,870
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Bay Hill [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Long Beach, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	160
Initial Cost to Company, Land	$ 7,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	27,437,239
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,964,954
Gross Amount Carried at close of period 12/31/2023, Land	7,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,402,193
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	40,002,193
Accumulated Depreciation	(21,835,777)
Investment in Real Estate, Net	18,166,416
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Beatrice, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	302
Initial Cost to Company, Land	$ 114,351,405
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	165,648,595
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,995,875
Gross Amount Carried at close of period 12/31/2023, Land	114,351,405
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	169,644,470
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	283,995,875
Accumulated Depreciation	(73,548,689)
Investment in Real Estate, Net	210,447,186
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Bella Vista I, II, III Combined [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Woodland Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	579
Initial Cost to Company, Land	$ 31,682,754
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	121,095,786
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,188,788
Gross Amount Carried at close of period 12/31/2023, Land	31,682,754
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	136,284,574
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	167,967,328
Accumulated Depreciation	(83,555,036)
Investment in Real Estate, Net	84,412,292
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Belle Arts Condominium Homes, LLC [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bellevue, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	1
Initial Cost to Company, Land	$ 63,158
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	236,157
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,098
Gross Amount Carried at close of period 12/31/2023, Land	63,158
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	238,255
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	301,413
Accumulated Depreciation	(124,113)
Investment in Real Estate, Net	177,300
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Bella Fontaine [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Marina Del Rey, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	102
Initial Cost to Company, Land	$ 9,098,808
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	28,701,192
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,444,563
Gross Amount Carried at close of period 12/31/2023, Land	9,098,808
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,145,755
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	41,244,563
Accumulated Depreciation	(14,408,672)
Investment in Real Estate, Net	26,835,891
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Breakwater at Marina Del Rey [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Marina Del Rey, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	224
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	73,189,262
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,136,929
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	76,326,191
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	76,326,191
Accumulated Depreciation	(32,636,843)
Investment in Real Estate, Net	43,689,348
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Briarwood (CA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Sunnyvale, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	192
Initial Cost to Company, Land	$ 9,991,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	22,247,278
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,063,331
Gross Amount Carried at close of period 12/31/2023, Land	9,991,500
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	35,310,609
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	45,302,109
Accumulated Depreciation	(23,585,266)
Investment in Real Estate, Net	21,716,843
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Brodie, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Westminster, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	312
Initial Cost to Company, Land	$ 8,639,904
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	79,257,130
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,753,507
Gross Amount Carried at close of period 12/31/2023, Land	8,639,904
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	81,010,637
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	89,650,541
Accumulated Depreciation	(20,858,102)
Investment in Real Estate, Net	68,792,439
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Brooklyner, The (fka 111 Lawrence). [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Brooklyn, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	490
Initial Cost to Company, Land	$ 40,099,922
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	221,438,631
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,118,634
Gross Amount Carried at close of period 12/31/2023, Land	40,099,922
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	227,557,265
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	267,657,187
Accumulated Depreciation	(101,708,858)
Investment in Real Estate, Net	165,948,329
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
C on Pico [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	94
Initial Cost to Company, Land	$ 17,125,766
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	28,074,234
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	704,768
Gross Amount Carried at close of period 12/31/2023, Land	17,125,766
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	28,779,002
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	45,904,768
Accumulated Depreciation	(9,424,001)
Investment in Real Estate, Net	36,480,767
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Carlyle Mill [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	317
Initial Cost to Company, Land	$ 10,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	51,367,913
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	12,565,532
Gross Amount Carried at close of period 12/31/2023, Land	10,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	63,933,445
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	73,933,445
Accumulated Depreciation	(44,576,313)
Investment in Real Estate, Net	29,357,132
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Carmel Terrace [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	384
Initial Cost to Company, Land	$ 2,288,300
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	20,596,281
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	21,048,610
Gross Amount Carried at close of period 12/31/2023, Land	2,288,300
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	41,644,891
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	43,933,191
Accumulated Depreciation	(33,112,960)
Investment in Real Estate, Net	10,820,231
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Cascade [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	477
Initial Cost to Company, Land	$ 23,751,564
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	149,406,957
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,129,025
Gross Amount Carried at close of period 12/31/2023, Land	23,751,564
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	150,535,982
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	174,287,546
Accumulated Depreciation	(38,651,067)
Investment in Real Estate, Net	135,636,479
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Centennial (fka Centennial Court & Centennial Tower) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	408
Initial Cost to Company, Land	$ 9,700,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	70,080,378
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	17,577,904
Gross Amount Carried at close of period 12/31/2023, Land	9,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	87,658,282
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	97,358,282
Accumulated Depreciation	(58,180,900)
Investment in Real Estate, Net	39,177,382
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Centre Club Combined [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Ontario, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	412
Initial Cost to Company, Land	$ 7,436,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,014,789
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	12,451,304
Gross Amount Carried at close of period 12/31/2023, Land	7,436,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,466,093
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	52,902,093
Accumulated Depreciation	(34,033,011)
Investment in Real Estate, Net	18,869,082
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Chelsea Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	113
Initial Cost to Company, Land	$ 3,397,100
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,289,074
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,370,676
Gross Amount Carried at close of period 12/31/2023, Land	3,397,100
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	12,659,750
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	16,056,850
Accumulated Depreciation	(10,679,531)
Investment in Real Estate, Net	5,377,319
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Chloe on Madison (fka 1401 E. Madison) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	137
Initial Cost to Company, Land	$ 10,401,958
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	53,913,565
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	109,171
Gross Amount Carried at close of period 12/31/2023, Land	10,401,958
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	54,022,736
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	64,424,694
Accumulated Depreciation	(9,225,790)
Investment in Real Estate, Net	55,198,904
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Chloe on Union (fka Chloe) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	117
Initial Cost to Company, Land	$ 14,835,571
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	39,359,650
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,301,073
Gross Amount Carried at close of period 12/31/2023, Land	14,835,571
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,660,723
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,496,294
Accumulated Depreciation	(11,890,890)
Investment in Real Estate, Net	45,605,404
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Church Corner [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	85
Initial Cost to Company, Land	$ 5,220,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,744,643
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,816,835
Gross Amount Carried at close of period 12/31/2023, Land	5,220,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	20,561,478
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	25,781,478
Accumulated Depreciation	(14,047,556)
Investment in Real Estate, Net	11,733,922
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Circa Fitzsimons [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	280
Initial Cost to Company, Land	$ 9,241,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	86,070,796
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	625,672
Gross Amount Carried at close of period 12/31/2023, Land	9,241,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	86,696,468
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	95,937,868
Accumulated Depreciation	(11,403,217)
Investment in Real Estate, Net	84,534,651
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
City Gate at Cupertino (fka Cupertino) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cupertino, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	311
Initial Cost to Company, Land	$ 40,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	95,937,046
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,960,917
Gross Amount Carried at close of period 12/31/2023, Land	40,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	104,897,963
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	145,297,963
Accumulated Depreciation	(44,848,845)
Investment in Real Estate, Net	100,449,118
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
City Square Bellevue (fka Bellevue) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bellevue, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	191
Initial Cost to Company, Land	$ 15,100,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	41,876,257
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,710,373
Gross Amount Carried at close of period 12/31/2023, Land	15,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	47,586,630
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	62,686,630
Accumulated Depreciation	(20,232,213)
Investment in Real Estate, Net	42,454,417
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Clarendon, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	292
Initial Cost to Company, Land	$ 30,400,340
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	103,824,660
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,885,173
Gross Amount Carried at close of period 12/31/2023, Land	30,400,340
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	109,709,833
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	140,110,173
Accumulated Depreciation	(51,014,797)
Investment in Real Estate, Net	89,095,376
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Cleo, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	92
Initial Cost to Company, Land	$ 6,615,467
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,829,335
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,785,294
Gross Amount Carried at close of period 12/31/2023, Land	6,615,467
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,614,629
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	26,230,096
Accumulated Depreciation	(12,188,753)
Investment in Real Estate, Net	14,041,343
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Connecticut Heights [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	518
Initial Cost to Company, Land	$ 27,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	114,002,295
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	12,080,368
Gross Amount Carried at close of period 12/31/2023, Land	27,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	126,082,663
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	153,682,663
Accumulated Depreciation	(53,418,758)
Investment in Real Estate, Net	100,263,905
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Corcoran House at DuPont Circle (fka DuPont Circle) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	138
Initial Cost to Company, Land	$ 13,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	26,913,113
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,223,942
Gross Amount Carried at close of period 12/31/2023, Land	13,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,137,055
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	45,637,055
Accumulated Depreciation	(14,041,548)
Investment in Real Estate, Net	31,595,507
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Courthouse Plaza [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	396
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	87,386,024
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,408,049
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	96,794,073
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	96,794,073
Accumulated Depreciation	(42,702,367)
Investment in Real Estate, Net	54,091,706
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Creekside (San Mateo) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Mateo, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	192
Initial Cost to Company, Land	$ 9,606,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	21,193,232
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,417,124
Gross Amount Carried at close of period 12/31/2023, Land	9,606,600
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	27,610,356
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	37,216,956
Accumulated Depreciation	(23,016,852)
Investment in Real Estate, Net	14,200,104
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Cronins Landing [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Waltham, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	281
Initial Cost to Company, Land	$ 32,300,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	85,119,324
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	16,618,711
Gross Amount Carried at close of period 12/31/2023, Land	32,300,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	101,738,035
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	134,038,035
Accumulated Depreciation	(44,049,990)
Investment in Real Estate, Net	89,988,045
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Crystal Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	181
Initial Cost to Company, Land	$ 17,200,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	47,918,975
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,465,464
Gross Amount Carried at close of period 12/31/2023, Land	17,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	54,384,439
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	71,584,439
Accumulated Depreciation	(23,323,848)
Investment in Real Estate, Net	48,260,591
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Dalton, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	270
Initial Cost to Company, Land	$ 22,947,777
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	95,334,754
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	520,384
Gross Amount Carried at close of period 12/31/2023, Land	22,947,777
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	95,855,138
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	118,802,915
Accumulated Depreciation	(18,310,220)
Investment in Real Estate, Net	100,492,695
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Deerwood (SD)
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	316
Initial Cost to Company, Land	$ 2,082,095
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,739,815
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,736,371
Gross Amount Carried at close of period 12/31/2023, Land	2,082,095
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	37,476,186
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	39,558,281
Accumulated Depreciation	(34,569,639)
Investment in Real Estate, Net	4,988,642
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Del Mar Ridge [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	181
Initial Cost to Company, Land	$ 7,801,824
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	36,948,176
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,128,679
Gross Amount Carried at close of period 12/31/2023, Land	7,801,824
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	46,076,855
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	53,878,679
Accumulated Depreciation	(23,465,530)
Investment in Real Estate, Net	30,413,149
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Eagle Canyon [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Chino Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	252
Initial Cost to Company, Land	$ 1,808,900
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,274,361
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,396,931
Gross Amount Carried at close of period 12/31/2023, Land	1,808,900
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,671,292
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	31,480,192
Accumulated Depreciation	(25,455,777)
Investment in Real Estate, Net	6,024,415
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Edge, The (fka 4885 Edgemoor Lane) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bethesda, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	154
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	72,836,851
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	47,591
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	72,884,442
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	72,884,442
Accumulated Depreciation	(7,419,177)
Investment in Real Estate, Net	65,465,265
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Edgemont at Bethesda Metro [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bethesda, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	123
Initial Cost to Company, Land	$ 13,092,552
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	43,907,448
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,501,637
Gross Amount Carried at close of period 12/31/2023, Land	13,092,552
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	49,409,085
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	62,501,637
Accumulated Depreciation	(22,196,226)
Investment in Real Estate, Net	40,305,411
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Emerson Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	444
Initial Cost to Company, Land	$ 14,855,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	57,566,636
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	39,564,184
Gross Amount Carried at close of period 12/31/2023, Land	14,855,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	97,130,820
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	111,985,820
Accumulated Depreciation	(80,591,213)
Investment in Real Estate, Net	31,394,607
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Encore at Sherman Oaks, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Sherman Oaks, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	174
Initial Cost to Company, Land	$ 8,700,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	25,446,003
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,534,741
Gross Amount Carried at close of period 12/31/2023, Land	8,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	30,980,744
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	39,680,744
Accumulated Depreciation	(15,446,990)
Investment in Real Estate, Net	24,233,754
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Eviva on Cherokee [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	274
Initial Cost to Company, Land	$ 10,507,626
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	100,037,204
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,351,489
Gross Amount Carried at close of period 12/31/2023, Land	10,507,626
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	102,388,693
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	112,896,319
Accumulated Depreciation	(22,757,962)
Investment in Real Estate, Net	90,138,357,000
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Flora [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Austin, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	194
Initial Cost to Company, Land	$ 5,733,088
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	32,343,349
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	709,561
Gross Amount Carried at close of period 12/31/2023, Land	5,733,088
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	33,052,910
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,785,998
Accumulated Depreciation	(6,108,471)
Investment in Real Estate, Net	32,677,527
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Fremont Center [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fremont, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	322
Initial Cost to Company, Land	$ 25,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	78,753,114
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,001,771
Gross Amount Carried at close of period 12/31/2023, Land	25,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	87,754,885
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	113,554,885
Accumulated Depreciation	(37,054,339)
Investment in Real Estate, Net	76,500,546
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Gaithersburg Station [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Gaithersburg, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	400
Initial Cost to Company, Land	$ 17,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	74,678,917
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,895,451
Gross Amount Carried at close of period 12/31/2023, Land	17,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	81,574,368
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	99,074,368
Accumulated Depreciation	(32,497,818)
Investment in Real Estate, Net	66,576,550
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Gateway at Malden Center [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Malden, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	203
Initial Cost to Company, Land	$ 9,209,780
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	25,722,666
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	19,657,330
Gross Amount Carried at close of period 12/31/2023, Land	9,209,780
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,379,996
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	54,589,776
Accumulated Depreciation	(34,108,785)
Investment in Real Estate, Net	20,480,991
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Geary Court Yard [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	165
Initial Cost to Company, Land	$ 1,722,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,471,429
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,820,508
Gross Amount Carried at close of period 12/31/2023, Land	1,722,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	22,291,937
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	24,014,337
Accumulated Depreciation	(19,281,906)
Investment in Real Estate, Net	4,732,431
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Girard [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	160
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	102,450,328
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,322,917
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	103,773,245
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	103,773,245
Accumulated Depreciation	(26,132,043)
Investment in Real Estate, Net	77,641,202
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hampshire Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	259
Initial Cost to Company, Land	$ 10,806,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	30,335,330
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	12,691,799
Gross Amount Carried at close of period 12/31/2023, Land	10,806,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	43,027,129
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	53,833,129
Accumulated Depreciation	(26,984,424)
Investment in Real Estate, Net	26,848,705
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Harbor Steps [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	761
Initial Cost to Company, Land	$ 59,403,601
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	158,829,432
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	60,387,650
Gross Amount Carried at close of period 12/31/2023, Land	59,403,601
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	219,217,082
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	278,620,683
Accumulated Depreciation	(133,704,499)
Investment in Real Estate, Net	144,916,184
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hathaway [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Long Beach, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	385
Initial Cost to Company, Land	$ 2,512,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	22,611,912
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	16,834,416
Gross Amount Carried at close of period 12/31/2023, Land	2,512,500
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	39,446,328
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	41,958,828
Accumulated Depreciation	(33,365,015)
Investment in Real Estate, Net	8,593,813
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Helios (fka 2nd+Pine) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	398
Initial Cost to Company, Land	$ 18,061,674
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	206,762,591
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,391,969
Gross Amount Carried at close of period 12/31/2023, Land	18,061,674
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	208,154,560
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	226,216,234
Accumulated Depreciation	(53,149,822)
Investment in Real Estate, Net	173,066,412
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Heritage at Stone Ridge [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Burlington, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	180
Initial Cost to Company, Land	$ 10,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	31,808,335
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,898,871
Gross Amount Carried at close of period 12/31/2023, Land	10,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,707,206
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	49,507,206
Accumulated Depreciation	(23,082,304)
Investment in Real Estate, Net	26,424,902
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Heritage Ridge [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Lynwood, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	197
Initial Cost to Company, Land	$ 6,895,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,983,597
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,865,406
Gross Amount Carried at close of period 12/31/2023, Land	6,895,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	24,849,003
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	31,744,003
Accumulated Depreciation	(16,027,471)
Investment in Real Estate, Net	15,716,532
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hesby [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	North Hollywood, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	308
Initial Cost to Company, Land	$ 23,299,892
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	102,700,108
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,620,381
Gross Amount Carried at close of period 12/31/2023, Land	23,299,892
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	106,320,489
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	129,620,381
Accumulated Depreciation	(39,156,702)
Investment in Real Estate, Net	90,463,679
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Highlands at South Plainfield [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	South Plainfield, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	252
Initial Cost to Company, Land	$ 10,080,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	37,526,912
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,075,515
Gross Amount Carried at close of period 12/31/2023, Land	10,080,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	41,602,427
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	51,682,427
Accumulated Depreciation	(26,247,074)
Investment in Real Estate, Net	25,435,353
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hikari [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	128
Initial Cost to Company, Land	$ 9,435,760
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	32,564,240
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,625,378
Gross Amount Carried at close of period 12/31/2023, Land	9,435,760
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	35,189,618
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	44,625,378
Accumulated Depreciation	(16,167,679)
Investment in Real Estate, Net	28,457,699
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hudson Crossing [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	259
Initial Cost to Company, Land	$ 23,420,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	69,977,699
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,378,863
Gross Amount Carried at close of period 12/31/2023, Land	23,420,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	75,356,562
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	98,776,562
Accumulated Depreciation	(48,829,162)
Investment in Real Estate, Net	49,947,400
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Hudson Pointe [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Jersey City, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	182
Initial Cost to Company, Land	$ 5,350,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	41,114,074
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,918,277
Gross Amount Carried at close of period 12/31/2023, Land	5,350,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	50,032,351
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	55,382,351
Accumulated Depreciation	(34,040,770)
Investment in Real Estate, Net	21,341,581
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Huxley, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redwood City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	137
Initial Cost to Company, Land	$ 18,775,028
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	89,336,651
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	555,115
Gross Amount Carried at close of period 12/31/2023, Land	18,775,028
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	89,891,766
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	108,666,794
Accumulated Depreciation	(16,805,781)
Investment in Real Estate, Net	91,861,013
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Indie Deep Ellum [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Dallas, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	231
Initial Cost to Company, Land	$ 12,253,503
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	63,853,833
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	901,501
Gross Amount Carried at close of period 12/31/2023, Land	12,253,503
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	64,755,334
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	77,008,837
Accumulated Depreciation	(8,878,139)
Investment in Real Estate, Net	68,130,698
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Ivory Wood [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bothell, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	144
Initial Cost to Company, Land	$ 2,732,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,888,282
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,558,625
Gross Amount Carried at close of period 12/31/2023, Land	2,732,800
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,446,907
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	22,179,707
Accumulated Depreciation	(11,427,052)
Investment in Real Estate, Net	10,752,655
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Jia (fka Chinatown Gateway) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	280
Initial Cost to Company, Land	$ 14,791,831
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	78,286,423
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,962,875
Gross Amount Carried at close of period 12/31/2023, Land	14,791,831
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	81,249,298
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	96,041,129
Accumulated Depreciation	(33,138,562)
Investment in Real Estate, Net	62,902,567
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Junction 47 (fka West Seattle) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	206
Initial Cost to Company, Land	$ 11,726,305
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	56,581,665
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,152,881
Gross Amount Carried at close of period 12/31/2023, Land	11,726,305
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	57,734,546
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	69,460,851
Accumulated Depreciation	(19,405,411)
Investment in Real Estate, Net	50,055,440
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Juniper Sandy Springs [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Sandy Springs, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	230
Initial Cost to Company, Land	$ 8,668,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	64,989,813
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	716,375
Gross Amount Carried at close of period 12/31/2023, Land	8,668,700
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	65,706,188
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	74,374,888
Accumulated Depreciation	(8,984,522)
Investment in Real Estate, Net	65,390,366
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Kelvin, The (fka Modera) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Irvine, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	194
Initial Cost to Company, Land	$ 15,521,552
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	64,853,448
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,566,632
Gross Amount Carried at close of period 12/31/2023, Land	15,521,552
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	66,420,080
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	81,941,632
Accumulated Depreciation	(22,771,191)
Investment in Real Estate, Net	59,170,441
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Kilby [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Frisco, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	258
Initial Cost to Company, Land	$ 6,431,940
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	64,187,474
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	617,387
Gross Amount Carried at close of period 12/31/2023, Land	6,431,940
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	64,804,861
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	71,236,801
Accumulated Depreciation	(9,248,837)
Investment in Real Estate, Net	61,987,964
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Laguna Clara [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Clara, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	222
Initial Cost to Company, Land	$ 10,441,994
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	22,572,843
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	37,440,159
Gross Amount Carried at close of period 12/31/2023, Land	10,441,994
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	60,013,002
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	70,454,996
Accumulated Depreciation	(23,986,326)
Investment in Real Estate, Net	46,468,670
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Laguna Clara II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Clara, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 3,200,426
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	74,835,894
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	3,200,426
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	74,835,894
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	78,036,320
Accumulated Depreciation	0
Investment in Real Estate, Net	78,036,320
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Landings at Port Imperial [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	W. New York, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	276
Initial Cost to Company, Land	$ 27,246,045
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	37,741,049
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,166,959
Gross Amount Carried at close of period 12/31/2023, Land	27,246,045
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	55,908,008
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	83,154,053
Accumulated Depreciation	(42,240,676)
Investment in Real Estate, Net	40,913,377
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lane [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	217
Initial Cost to Company, Land	$ 13,142,946
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	71,942,751
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	433,093
Gross Amount Carried at close of period 12/31/2023, Land	13,142,946
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	72,375,844
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	85,518,790
Accumulated Depreciation	(13,223,818)
Investment in Real Estate, Net	72,294,972
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lex, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Jose, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	387
Initial Cost to Company, Land	$ 21,817,512
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	158,778,598
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,422,042
Gross Amount Carried at close of period 12/31/2023, Land	21,817,512
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	161,200,640
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	183,018,152
Accumulated Depreciation	(33,432,604)
Investment in Real Estate, Net	149,585,548
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Liberty Park [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Braintree, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	202
Initial Cost to Company, Land	$ 5,977,504
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	26,749,111
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,311,443
Gross Amount Carried at close of period 12/31/2023, Land	5,977,504
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	36,060,554
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	42,038,058
Accumulated Depreciation	(25,793,896)
Investment in Real Estate, Net	16,244,162
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Liberty Tower [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	235
Initial Cost to Company, Land	$ 16,382,822
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	83,817,078
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,377,043
Gross Amount Carried at close of period 12/31/2023, Land	16,382,822
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	93,194,121
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	109,576,943
Accumulated Depreciation	(45,138,808)
Investment in Real Estate, Net	64,438,135
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lincoln Heights [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Quincy, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	336
Initial Cost to Company, Land	$ 5,928,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,595,262
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	17,591,688
Gross Amount Carried at close of period 12/31/2023, Land	5,928,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	51,186,950
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,115,350
Accumulated Depreciation	(44,339,403)
Investment in Real Estate, Net	12,775,947
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lofts at Kendall Square (fka Kendall Square) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	186
Initial Cost to Company, Land	$ 18,696,674
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	78,445,657
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,634,537
Gross Amount Carried at close of period 12/31/2023, Land	18,696,674
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	87,080,194
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	105,776,868
Accumulated Depreciation	(37,626,154)
Investment in Real Estate, Net	68,150,714
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lofts at Kendall Square ll (fka 249 Third Street) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	84
Initial Cost to Company, Land	$ 4,603,326
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	44,187,266
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	318,540
Gross Amount Carried at close of period 12/31/2023, Land	4,603,326
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	44,505,806
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	49,109,132
Accumulated Depreciation	(7,430,067)
Investment in Real Estate, Net	41,679,065
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Longacre House [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	293
Initial Cost to Company, Land	$ 73,170,045
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	53,962,510
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,667,753
Gross Amount Carried at close of period 12/31/2023, Land	73,170,045
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	61,630,263
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	134,800,308
Accumulated Depreciation	(34,732,681)
Investment in Real Estate, Net	100,067,627
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Longfellow Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	710
Initial Cost to Company, Land	$ 38,264,917
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	132,175,915
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	109,245,678
Gross Amount Carried at close of period 12/31/2023, Land	38,264,917
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	241,421,593
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	279,686,510
Accumulated Depreciation	(191,850,552)
Investment in Real Estate, Net	87,835,958
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Luna Upper Westside [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Atlanta, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	345
Initial Cost to Company, Land	$ 14,847,420
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	108,325,394
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	593,390
Gross Amount Carried at close of period 12/31/2023, Land	14,847,420
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	108,918,784
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	123,766,204
Accumulated Depreciation	(13,248,308)
Investment in Real Estate, Net	110,517,896
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Madox [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Jersey City, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	131
Initial Cost to Company, Land	$ 9,679,635
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	64,594,205
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,645,456
Gross Amount Carried at close of period 12/31/2023, Land	9,679,635
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	66,239,661
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	75,919,296
Accumulated Depreciation	(15,369,145)
Investment in Real Estate, Net	60,550,151
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mantena [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	98
Initial Cost to Company, Land	$ 22,346,513
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,501,158
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,188,992
Gross Amount Carried at close of period 12/31/2023, Land	22,346,513
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	63,690,150
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	86,036,663
Accumulated Depreciation	(26,550,412)
Investment in Real Estate, Net	59,486,251
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mara Pacific Beach [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	172
Initial Cost to Company, Land	$ 25,360,682
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	87,755,429
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,410,014
Gross Amount Carried at close of period 12/31/2023, Land	25,360,682
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	89,165,443
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	114,526,125
Accumulated Depreciation	(9,204,461)
Investment in Real Estate, Net	105,321,664
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Marina 41 (fka Marina Del Rey) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Marina Del Rey, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	623
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	168,842,442
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	12,614,637
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	181,457,079
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	181,457,079
Accumulated Depreciation	(78,411,305)
Investment in Real Estate, Net	103,045,774
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mariposa at Playa Del Rey (fka Playa Del Rey) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Playa Del Rey, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	354
Initial Cost to Company, Land	$ 60,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	89,311,482
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,223,579
Gross Amount Carried at close of period 12/31/2023, Land	60,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	103,535,061
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	164,435,061
Accumulated Depreciation	(42,508,058)
Investment in Real Estate, Net	121,927,003
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Market Street Village [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	229
Initial Cost to Company, Land	$ 13,740,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	40,757,301
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,472,332
Gross Amount Carried at close of period 12/31/2023, Land	13,740,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	44,229,633
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,969,633
Accumulated Depreciation	(26,991,272)
Investment in Real Estate, Net	30,978,361
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Marlowe (fka Oakwood Crystal City) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	162
Initial Cost to Company, Land	$ 15,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	35,474,336
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,261,340
Gross Amount Carried at close of period 12/31/2023, Land	15,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	41,735,676
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,135,676
Accumulated Depreciation	(18,198,660)
Investment in Real Estate, Net	38,937,016
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Milano Lofts [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	99
Initial Cost to Company, Land	$ 8,125,216
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	27,378,784
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,530,316
Gross Amount Carried at close of period 12/31/2023, Land	8,125,216
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,909,100
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	41,034,316
Accumulated Depreciation	(14,623,666)
Investment in Real Estate, Net	26,410,650
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mill Creek [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Milpitas, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	516
Initial Cost to Company, Land	$ 12,858,693
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	57,168,503
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	20,302,965
Gross Amount Carried at close of period 12/31/2023, Land	12,858,693
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	77,471,468
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	90,330,161
Accumulated Depreciation	(53,791,805)
Investment in Real Estate, Net	36,538,356
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Milo [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	319
Initial Cost to Company, Land	$ 15,957,975
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	153,331,358
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,631,738
Gross Amount Carried at close of period 12/31/2023, Land	15,957,975
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	154,963,096
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	170,921,071
Accumulated Depreciation	(15,719,277)
Investment in Real Estate, Net	155,201,794
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mosaic at Metro [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Hyattsville, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	260
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	59,580,898
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,376,256
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	61,957,154
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	61,957,154
Accumulated Depreciation	(32,149,923)
Investment in Real Estate, Net	29,807,231
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mountain View Redevelopment [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Mountain View, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,690,285
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	2,690,285
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	2,690,285
Accumulated Depreciation	0
Investment in Real Estate, Net	2,690,285
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Mozaic at Union Station [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	272
Initial Cost to Company, Land	$ 8,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	52,529,446
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,360,565
Gross Amount Carried at close of period 12/31/2023, Land	8,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	57,890,011
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	66,390,011
Accumulated Depreciation	(33,745,465)
Investment in Real Estate, Net	32,644,546
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Murray Hill Tower (fka Murray Hill) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	270
Initial Cost to Company, Land	$ 75,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	102,705,401
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,903,328
Gross Amount Carried at close of period 12/31/2023, Land	75,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	118,608,729
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	194,408,729
Accumulated Depreciation	(52,828,918)
Investment in Real Estate, Net	141,579,811
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Next on Sixth [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	398
Initial Cost to Company, Land	$ 52,509,906
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	136,635,650
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,404,646
Gross Amount Carried at close of period 12/31/2023, Land	52,509,906
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	138,040,296
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	190,550,202
Accumulated Depreciation	(29,659,205)
Investment in Real Estate, Net	160,890,997
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
North Pier at Harborside [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Jersey City, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	297
Initial Cost to Company, Land	$ 4,000,159
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	94,290,590
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,655,270
Gross Amount Carried at close of period 12/31/2023, Land	4,000,159
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	108,945,860
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	112,946,019
Accumulated Depreciation	(69,398,688)
Investment in Real Estate, Net	43,547,331
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Northglen [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Valencia, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	234
Initial Cost to Company, Land	$ 9,360,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	20,778,553
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,016,329
Gross Amount Carried at close of period 12/31/2023, Land	9,360,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	28,794,882
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,154,882
Accumulated Depreciation	(21,634,092)
Investment in Real Estate, Net	16,520,790
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Northpark [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Burlingame, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	510
Initial Cost to Company, Land	$ 38,607,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	77,472,217
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	20,077,277
Gross Amount Carried at close of period 12/31/2023, Land	38,607,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	97,549,494
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	136,156,494
Accumulated Depreciation	(54,387,642)
Investment in Real Estate, Net	81,768,852
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Oak Park Combined [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Agoura Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	444
Initial Cost to Company, Land	$ 3,390,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	30,517,274
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	13,167,882
Gross Amount Carried at close of period 12/31/2023, Land	3,390,700
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	43,685,156
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	47,075,856
Accumulated Depreciation	(39,986,282)
Investment in Real Estate, Net	7,089,574
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Oaks [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Clarita, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	520
Initial Cost to Company, Land	$ 23,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,020,438
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,187,526
Gross Amount Carried at close of period 12/31/2023, Land	23,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	79,207,964
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	102,607,964
Accumulated Depreciation	(50,232,040)
Investment in Real Estate, Net	52,375,924
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Ocean Crest [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Solana Beach, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	146
Initial Cost to Company, Land	$ 5,111,200
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,910,438
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,778,689
Gross Amount Carried at close of period 12/31/2023, Land	5,111,200
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	17,689,127
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	22,800,327
Accumulated Depreciation	(14,730,437)
Investment in Real Estate, Net	8,069,890
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Odin (fka Tallman) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	301
Initial Cost to Company, Land	$ 16,807,519
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	64,519,515
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	827,649
Gross Amount Carried at close of period 12/31/2023, Land	16,807,519
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	65,347,164
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	82,154,683
Accumulated Depreciation	(21,646,607)
Investment in Real Estate, Net	60,508,076
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Olivian at the Realm [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Lewisville, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	421
Initial Cost to Company, Land	$ 14,854,564
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	109,313,571
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,162,940
Gross Amount Carried at close of period 12/31/2023, Land	14,854,564
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	110,476,511
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	125,331,075
Accumulated Depreciation	(12,312,825)
Investment in Real Estate, Net	113,018,250
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
One Henry Adams [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	241
Initial Cost to Company, Land	$ 30,224,393
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	139,704,146
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,286,618
Gross Amount Carried at close of period 12/31/2023, Land	30,224,393
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	140,990,764
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	171,215,157
Accumulated Depreciation	(39,511,777)
Investment in Real Estate, Net	131,703,380
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
One India Street (fka Oakwood Boston) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	94
Initial Cost to Company, Land	$ 22,200,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	28,672,979
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,294,988
Gross Amount Carried at close of period 12/31/2023, Land	22,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	35,967,967
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	58,167,967
Accumulated Depreciation	(16,671,590)
Investment in Real Estate, Net	41,496,377
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Osprey [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Atlanta, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	320
Initial Cost to Company, Land	$ 18,121,932
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	116,950,910
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	795,010
Gross Amount Carried at close of period 12/31/2023, Land	18,121,932
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	117,745,920
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	135,867,852
Accumulated Depreciation	(13,708,059)
Investment in Real Estate, Net	122,159,793
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Pacific Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	430
Initial Cost to Company, Land	$ 32,250,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	110,750,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,450,100
Gross Amount Carried at close of period 12/31/2023, Land	32,250,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	120,200,100
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	152,450,100
Accumulated Depreciation	(46,424,357)
Investment in Real Estate, Net	106,025,743
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Packard Building [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	61
Initial Cost to Company, Land	$ 5,911,041
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	19,954,959
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,559,243
Gross Amount Carried at close of period 12/31/2023, Land	5,911,041
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	21,514,202
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	27,425,243
Accumulated Depreciation	(7,229,644)
Investment in Real Estate, Net	20,195,599
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parc 77 [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	137
Initial Cost to Company, Land	$ 40,504,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,025,679
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,970,358
Gross Amount Carried at close of period 12/31/2023, Land	40,504,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	25,996,037
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	66,500,037
Accumulated Depreciation	(17,581,457)
Investment in Real Estate, Net	48,918,580
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parc Cameron [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	166
Initial Cost to Company, Land	$ 37,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,855,597
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,449,294
Gross Amount Carried at close of period 12/31/2023, Land	37,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	18,304,891
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	55,904,891
Accumulated Depreciation	(13,879,196)
Investment in Real Estate, Net	42,025,695
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parc Coliseum [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	177
Initial Cost to Company, Land	$ 52,654,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	23,045,751
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,770,843
Gross Amount Carried at close of period 12/31/2023, Land	52,654,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	33,816,594
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	86,470,594
Accumulated Depreciation	(23,394,106)
Investment in Real Estate, Net	63,076,488
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parc East Towers [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	324
Initial Cost to Company, Land	$ 102,163,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	108,989,402
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,586,244
Gross Amount Carried at close of period 12/31/2023, Land	102,163,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	124,575,646
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	226,738,646
Accumulated Depreciation	(74,316,340)
Investment in Real Estate, Net	152,422,306
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parc on Powell (fka Parkside at Emeryville) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Emeryville, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	173
Initial Cost to Company, Land	$ 16,667,059
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	65,473,337
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,310,713
Gross Amount Carried at close of period 12/31/2023, Land	16,667,059
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	68,784,050
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	85,451,109
Accumulated Depreciation	(22,819,414)
Investment in Real Estate, Net	62,631,695
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Park Connecticut [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	142
Initial Cost to Company, Land	$ 13,700,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	59,087,519
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,912,747
Gross Amount Carried at close of period 12/31/2023, Land	13,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	65,000,266
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	78,700,266
Accumulated Depreciation	(25,595,262)
Investment in Real Estate, Net	53,105,004
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Park West (CA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	444
Initial Cost to Company, Land	$ 3,033,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	27,302,383
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,665,950
Gross Amount Carried at close of period 12/31/2023, Land	3,033,500
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,968,333
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	46,001,833
Accumulated Depreciation	(37,830,238)
Investment in Real Estate, Net	8,171,595
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Parkside [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Union City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	208
Initial Cost to Company, Land	$ 6,246,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,827,453
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,034,696
Gross Amount Carried at close of period 12/31/2023, Land	6,246,700
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	20,862,149
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	27,108,849
Accumulated Depreciation	(16,929,525)
Investment in Real Estate, Net	10,179,324
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Pearl, The (WA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	80
Initial Cost to Company, Land	$ 6,972,585
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	26,527,415
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,496,143
Gross Amount Carried at close of period 12/31/2023, Land	6,972,585
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	28,023,558
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	34,996,143
Accumulated Depreciation	(9,753,976)
Investment in Real Estate, Net	25,242,167
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Pearl MDR (fka Oakwood Marina Del Rey) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Marina Del Rey, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	597
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	120,795,359
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	25,387,707
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	146,183,066
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	146,183,066
Accumulated Depreciation	(58,974,843)
Investment in Real Estate, Net	87,208,223
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Pegasus [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	322
Initial Cost to Company, Land	$ 18,094,052
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	81,905,948
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,486,175
Gross Amount Carried at close of period 12/31/2023, Land	18,094,052
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	93,392,123
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	111,486,175
Accumulated Depreciation	(45,871,998)
Investment in Real Estate, Net	65,614,177
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Portofino [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Chino Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	176
Initial Cost to Company, Land	$ 3,572,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,660,994
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,368,196
Gross Amount Carried at close of period 12/31/2023, Land	3,572,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	20,029,190
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	23,601,590
Accumulated Depreciation	(16,858,559)
Investment in Real Estate, Net	6,743,031
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Portofino (Val) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Valencia, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	216
Initial Cost to Company, Land	$ 8,640,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	21,487,126
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,133,484
Gross Amount Carried at close of period 12/31/2023, Land	8,640,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	28,620,610
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	37,260,610
Accumulated Depreciation	(22,054,016)
Investment in Real Estate, Net	15,206,594
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Portside Towers [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Jersey City, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	527
Initial Cost to Company, Land	$ 22,487,006
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	96,842,913
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	31,772,570
Gross Amount Carried at close of period 12/31/2023, Land	22,487,006
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	128,615,483
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	151,102,489
Accumulated Depreciation	(108,369,349)
Investment in Real Estate, Net	42,733,140
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Potrero 1010 [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	453
Initial Cost to Company, Land	$ 40,830,011
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	181,924,463
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,633,921
Gross Amount Carried at close of period 12/31/2023, Land	40,830,011
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	184,558,384
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	225,388,395
Accumulated Depreciation	(56,411,881)
Investment in Real Estate, Net	168,976,514
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Prado (fka Glendale) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Glendale, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	264
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	67,977,313
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,812,571
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	75,789,884
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	75,789,884
Accumulated Depreciation	(32,306,839)
Investment in Real Estate, Net	43,483,045
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Penman, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Atlanta, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	262
Initial Cost to Company, Land	$ 9,942,043
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	68,917,572
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	413,300
Gross Amount Carried at close of period 12/31/2023, Land	9,942,043
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	69,330,872
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	79,272,915
Accumulated Depreciation	(3,261,263)
Investment in Real Estate, Net	76,011,652
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Prime, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	281
Initial Cost to Company, Land	$ 34,625,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	77,879,740
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,451,378
Gross Amount Carried at close of period 12/31/2023, Land	34,625,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	89,331,118
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	123,956,118
Accumulated Depreciation	(45,403,647)
Investment in Real Estate, Net	78,552,471
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Prism at Park Avenue South (fka 400 Park Aveue South (EQR)) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	269
Initial Cost to Company, Land	$ 76,292,169
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	171,812,112
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	480,769
Gross Amount Carried at close of period 12/31/2023, Land	76,292,169
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	172,292,881
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	248,585,050
Accumulated Depreciation	(58,984,500)
Investment in Real Estate, Net	189,600,550
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Promenade at Town Center I & II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Valencia, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	564
Initial Cost to Company, Land	$ 28,200,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	69,795,915
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	19,178,549
Gross Amount Carried at close of period 12/31/2023, Land	28,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	88,974,464
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	117,174,464
Accumulated Depreciation	(57,965,755)
Investment in Real Estate, Net	59,208,709
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Providence [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bothell, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	200
Initial Cost to Company, Land	$ 3,573,621
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	19,055,505
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,956,842
Gross Amount Carried at close of period 12/31/2023, Land	3,573,621
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	26,012,347
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	29,585,968
Accumulated Depreciation	(16,594,365)
Investment in Real Estate, Net	12,991,603
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Quarry Hills [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Quincy, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	316
Initial Cost to Company, Land	$ 26,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	84,411,162
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,884,801
Gross Amount Carried at close of period 12/31/2023, Land	26,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	92,295,963
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	119,195,963
Accumulated Depreciation	(38,628,384)
Investment in Real Estate, Net	80,567,579
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Radiant Fairfax Ridge [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fairfax, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	213
Initial Cost to Company, Land	$ 7,352,547
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	63,018,744
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	763,336
Gross Amount Carried at close of period 12/31/2023, Land	7,352,547
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	63,782,080
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	71,134,627
Accumulated Depreciation	(9,407,562)
Investment in Real Estate, Net	61,727,065
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Radius Uptown [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	372
Initial Cost to Company, Land	$ 13,644,960
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	121,899,084
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,684,835
Gross Amount Carried at close of period 12/31/2023, Land	13,644,960
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	124,583,919
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	138,228,879
Accumulated Depreciation	(30,154,484)
Investment in Real Estate, Net	108,074,395
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Redmond Court [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bellevue, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	206
Initial Cost to Company, Land	$ 10,300,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,488,745
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,757,284
Gross Amount Carried at close of period 12/31/2023, Land	10,300,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	39,246,029
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	49,546,029
Accumulated Depreciation	(16,909,272)
Investment in Real Estate, Net	32,636,757
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Regency Palms [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Huntington Beach, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	310
Initial Cost to Company, Land	$ 1,857,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,713,254
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,768,897
Gross Amount Carried at close of period 12/31/2023, Land	1,857,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	26,482,151
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	28,339,551
Accumulated Depreciation	(23,045,040)
Investment in Real Estate, Net	5,294,511
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Burlington, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Burlington, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	270
Initial Cost to Company, Land	$ 20,250,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	114,476,933
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,192,804
Gross Amount Carried at close of period 12/31/2023, Land	20,250,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	115,669,737
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	135,919,737
Accumulated Depreciation	(14,832,668)
Investment in Real Estate, Net	121,087,069
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Clarendon Centre, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	252
Initial Cost to Company, Land	$ 10,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	52,812,935
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,497,244
Gross Amount Carried at close of period 12/31/2023, Land	10,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	60,310,179
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	70,810,179
Accumulated Depreciation	(41,008,914)
Investment in Real Estate, Net	29,801,265
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Eisenhower, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	226
Initial Cost to Company, Land	$ 6,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	34,585,059
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,366,435
Gross Amount Carried at close of period 12/31/2023, Land	6,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	40,951,494
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	47,451,494
Accumulated Depreciation	(28,643,944)
Investment in Real Estate, Net	18,807,550
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Empire Lakes [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Rancho Cucamonga, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	467
Initial Cost to Company, Land	$ 16,345,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	73,080,670
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,209,264
Gross Amount Carried at close of period 12/31/2023, Land	16,345,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	87,289,934
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	103,634,934
Accumulated Depreciation	(51,335,751)
Investment in Real Estate, Net	52,299,183
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Fairfax Corner [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fairfax, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	652
Initial Cost to Company, Land	$ 15,804,057
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	63,129,050
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	16,050,762
Gross Amount Carried at close of period 12/31/2023, Land	15,804,057
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	79,179,812
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	94,983,869
Accumulated Depreciation	(57,156,000)
Investment in Real Estate, Net	37,827,869
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Mountain View (fka Mountain View) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Mountain View, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	180
Initial Cost to Company, Land	$ 27,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,029,605
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,940,765
Gross Amount Carried at close of period 12/31/2023, Land	27,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,970,370
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	69,970,370
Accumulated Depreciation	(20,306,708)
Investment in Real Estate, Net	49,663,662
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Potomac Yard [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	588
Initial Cost to Company, Land	$ 11,918,917
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	68,862,641
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	22,487,722
Gross Amount Carried at close of period 12/31/2023, Land	11,918,917
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	91,350,363
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	103,269,280
Accumulated Depreciation	(61,488,868)
Investment in Real Estate, Net	41,780,412
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Reserve at Town Center I-III (WA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Mill Creek, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	584
Initial Cost to Company, Land	$ 16,768,705
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	77,623,664
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,491,401
Gross Amount Carried at close of period 12/31/2023, Land	16,768,705
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	92,115,065
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	108,883,770
Accumulated Depreciation	(50,723,769)
Investment in Real Estate, Net	58,160,001
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Rianna I & II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	156
Initial Cost to Company, Land	$ 4,430,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	29,298,096
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,922,304
Gross Amount Carried at close of period 12/31/2023, Land	4,430,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	34,220,400
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,650,400
Accumulated Depreciation	(17,048,020)
Investment in Real Estate, Net	21,602,380
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Richmond Row [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Suwanee, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	344
Initial Cost to Company, Land	$ 10,030,008
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	88,340,263
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,075
Gross Amount Carried at close of period 12/31/2023, Land	10,030,008
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	88,347,338
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	98,377,346
Accumulated Depreciation	(2,992,401)
Investment in Real Estate, Net	95,384,945
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Ridgewood Village I&II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	408
Initial Cost to Company, Land	$ 11,809,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	34,004,048
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,600,913
Gross Amount Carried at close of period 12/31/2023, Land	11,809,500
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,604,961
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	54,414,461
Accumulated Depreciation	(34,187,275)
Investment in Real Estate, Net	20,227,186
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Riva Terra I (fka Redwood Shores) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redwood City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	304
Initial Cost to Company, Land	$ 34,963,355
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	84,587,658
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,990,949
Gross Amount Carried at close of period 12/31/2023, Land	34,963,355
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	95,578,607
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	130,541,962
Accumulated Depreciation	(42,139,194)
Investment in Real Estate, Net	88,402,768
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Riva Terra II (fka Harborside) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redwood City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	149
Initial Cost to Company, Land	$ 17,136,645
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	40,536,531
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,308,292
Gross Amount Carried at close of period 12/31/2023, Land	17,136,645
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,844,823
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	62,981,468
Accumulated Depreciation	(19,195,628)
Investment in Real Estate, Net	43,785,840
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Riverpark [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	321
Initial Cost to Company, Land	$ 14,355,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	80,894,049
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,478,677
Gross Amount Carried at close of period 12/31/2023, Land	14,355,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	87,372,726
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	101,727,726
Accumulated Depreciation	(39,802,428)
Investment in Real Estate, Net	61,925,298
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Rivington, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Hoboken, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	240
Initial Cost to Company, Land	$ 34,340,640
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	112,112,152
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,247,025
Gross Amount Carried at close of period 12/31/2023, Land	34,340,640
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	118,359,177
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	152,699,817
Accumulated Depreciation	(29,568,763)
Investment in Real Estate, Net	123,131,054
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Rivington II, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Hoboken, NJ
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	882,999
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	882,999
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	882,999
Accumulated Depreciation	0
Investment in Real Estate, Net	882,999
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Rosecliff II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Quincy, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	130
Initial Cost to Company, Land	$ 4,922,840
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	30,202,160
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,144,895
Gross Amount Carried at close of period 12/31/2023, Land	4,922,840
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	33,347,055
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,269,895
Accumulated Depreciation	(15,693,941)
Investment in Real Estate, Net	22,575,954
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Sakura Crossing [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	230
Initial Cost to Company, Land	$ 14,641,990
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	42,858,010
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,295,778
Gross Amount Carried at close of period 12/31/2023, Land	14,641,990
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,153,788
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	59,795,778
Accumulated Depreciation	(21,869,195)
Investment in Real Estate, Net	37,926,583
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Savanna Nine Mile [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Erie, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	287
Initial Cost to Company, Land	$ 9,386,048
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	98,792,001
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	327,082
Gross Amount Carried at close of period 12/31/2023, Land	9,386,048
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	99,119,083
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	108,505,131
Accumulated Depreciation	(6,144,916)
Investment in Real Estate, Net	102,360,215
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Saxton [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	325
Initial Cost to Company, Land	$ 38,805,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	128,652,023
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,017,507
Gross Amount Carried at close of period 12/31/2023, Land	38,805,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	129,669,530
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	168,474,930
Accumulated Depreciation	(24,464,893)
Investment in Real Estate, Net	144,010,037
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Sheffield Court [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	597
Initial Cost to Company, Land	$ 3,342,381
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	31,337,332
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	28,451,637
Gross Amount Carried at close of period 12/31/2023, Land	3,342,381
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	59,788,969
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	63,131,350
Accumulated Depreciation	(49,017,026)
Investment in Real Estate, Net	14,114,324
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Siena Terrace [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Lake Forest, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	356
Initial Cost to Company, Land	$ 8,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	24,083,024
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,161,947
Gross Amount Carried at close of period 12/31/2023, Land	8,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	34,244,971
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	43,144,971
Accumulated Depreciation	(28,124,403)
Investment in Real Estate, Net	15,020,568
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Skycrest [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Valencia, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	264
Initial Cost to Company, Land	$ 10,560,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	25,574,457
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,261,508
Gross Amount Carried at close of period 12/31/2023, Land	10,560,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,835,965
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	43,395,965
Accumulated Depreciation	(25,008,353)
Investment in Real Estate, Net	18,387,612
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Skyhouse South [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Atlanta, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	320
Initial Cost to Company, Land	$ 14,182,277
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	101,911,477
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	865,625
Gross Amount Carried at close of period 12/31/2023, Land	14,182,277
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	102,777,102
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	116,959,379
Accumulated Depreciation	(14,711,876)
Investment in Real Estate, Net	102,247,503
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Skylark [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Union City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	174
Initial Cost to Company, Land	$ 1,781,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,731,916
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,385,765
Gross Amount Carried at close of period 12/31/2023, Land	1,781,600
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,117,681
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	24,899,281
Accumulated Depreciation	(19,266,032)
Investment in Real Estate, Net	5,633,249
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Skyview [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Rancho Santa Margarita, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	260
Initial Cost to Company, Land	$ 3,380,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	21,952,863
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,822,233
Gross Amount Carried at close of period 12/31/2023, Land	3,380,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,775,096
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	33,155,096
Accumulated Depreciation	(23,882,860)
Investment in Real Estate, Net	9,272,236
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
SoMa II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 29,406,606
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,946,220
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	29,406,606
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	5,946,220
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	35,352,826
Accumulated Depreciation	0
Investment in Real Estate, Net	35,352,826
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Sonterra at Foothill Ranch [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Foothill Ranch, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	300
Initial Cost to Company, Land	$ 7,503,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	24,048,507
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,306,241
Gross Amount Carried at close of period 12/31/2023, Land	7,503,400
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	31,354,748
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	38,858,148
Accumulated Depreciation	(26,411,678)
Investment in Real Estate, Net	12,446,470
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
South City Station (fka South San Francisco) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	368
Initial Cost to Company, Land	$ 68,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	79,476,861
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	11,170,173
Gross Amount Carried at close of period 12/31/2023, Land	68,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	90,647,034
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	159,547,034
Accumulated Depreciation	(37,427,408)
Investment in Real Estate, Net	122,119,626
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Southwood [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Palo Alto, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	100
Initial Cost to Company, Land	$ 6,936,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,324,069
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,166,206
Gross Amount Carried at close of period 12/31/2023, Land	6,936,600
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,490,275
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	30,426,875
Accumulated Depreciation	(17,886,037)
Investment in Real Estate, Net	12,540,838
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Springline [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	136
Initial Cost to Company, Land	$ 9,163,667
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	47,910,981
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	925,584
Gross Amount Carried at close of period 12/31/2023, Land	9,163,667
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	48,836,565
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	58,000,232
Accumulated Depreciation	(13,738,227)
Investment in Real Estate, Net	44,262,005
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
STOA [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	237
Initial Cost to Company, Land	$ 25,326,048
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	79,976,031
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	798,002
Gross Amount Carried at close of period 12/31/2023, Land	25,326,048
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	80,774,033
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	106,100,081
Accumulated Depreciation	(17,730,242)
Investment in Real Estate, Net	88,369,839
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Ten23 (fka 500 West 23rd Street) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	111
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	58,881,873
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,884,314
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	60,766,187
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	60,766,187
Accumulated Depreciation	(24,816,731)
Investment in Real Estate, Net	35,949,456
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Terraces, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	117
Initial Cost to Company, Land	$ 14,087,610
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,314,151
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,404,650
Gross Amount Carried at close of period 12/31/2023, Land	14,087,610
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,718,801
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	33,806,411
Accumulated Depreciation	(10,311,675)
Investment in Real Estate, Net	23,494,736
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Square One [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	112
Initial Cost to Company, Land	$ 7,222,544
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	26,277,456
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	585,300
Gross Amount Carried at close of period 12/31/2023, Land	7,222,544
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	26,862,756
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	34,085,300
Accumulated Depreciation	(9,806,190)
Investment in Real Estate, Net	24,279,110
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Theo [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	275
Initial Cost to Company, Land	$ 15,322,049
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	122,105,822
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,725,512
Gross Amount Carried at close of period 12/31/2023, Land	15,322,049
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	127,831,334
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	143,153,383
Accumulated Depreciation	(14,436,596)
Investment in Real Estate, Net	128,716,787
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Third Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	471
Initial Cost to Company, Land	$ 26,767,171
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	218,822,728
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,058,561
Gross Amount Carried at close of period 12/31/2023, Land	26,767,171
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	232,881,289
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	259,648,460
Accumulated Depreciation	(119,293,842)
Investment in Real Estate, Net	140,354,618
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Three20 [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	134
Initial Cost to Company, Land	$ 7,030,766
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	29,005,762
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,201,169
Gross Amount Carried at close of period 12/31/2023, Land	7,030,766
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	30,206,931
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	37,237,697
Accumulated Depreciation	(11,923,729)
Investment in Real Estate, Net	25,313,968
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Toscana [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Irvine, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	563
Initial Cost to Company, Land	$ 39,410,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	50,806,072
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	29,210,951
Gross Amount Carried at close of period 12/31/2023, Land	39,410,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	80,017,023
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	119,427,023
Accumulated Depreciation	(59,755,687)
Investment in Real Estate, Net	59,671,336
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Town Square at Mark Center I&II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	678
Initial Cost to Company, Land	$ 39,928,464
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	141,208,321
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	18,935,294
Gross Amount Carried at close of period 12/31/2023, Land	39,928,464
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	160,143,615
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	200,072,079
Accumulated Depreciation	(93,729,565)
Investment in Real Estate, Net	106,342,514
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Troy Boston [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	378
Initial Cost to Company, Land	$ 34,641,051
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	181,607,331
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,949,396
Gross Amount Carried at close of period 12/31/2023, Land	34,641,051
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	185,556,727
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	220,197,778
Accumulated Depreciation	(46,837,498)
Investment in Real Estate, Net	173,360,280
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Urbana (fka Market Street Landing) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	289
Initial Cost to Company, Land	$ 12,542,418
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	75,800,090
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,048,215
Gross Amount Carried at close of period 12/31/2023, Land	12,542,418
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	79,848,305
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	92,390,723
Accumulated Depreciation	(31,470,273)
Investment in Real Estate, Net	60,920,450
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Uwajimaya Village [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	176
Initial Cost to Company, Land	$ 8,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	22,188,288
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,465,521
Gross Amount Carried at close of period 12/31/2023, Land	8,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	30,653,809
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	39,453,809
Accumulated Depreciation	(17,843,046)
Investment in Real Estate, Net	21,610,763
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Vantage Hollywood [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	298
Initial Cost to Company, Land	$ 42,580,326
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	56,014,674
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,599,573
Gross Amount Carried at close of period 12/31/2023, Land	42,580,326
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	60,614,247
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	103,194,573
Accumulated Depreciation	(22,544,861)
Investment in Real Estate, Net	80,649,712
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Veloce [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	322
Initial Cost to Company, Land	$ 15,322,724
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	76,176,594
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,572,969
Gross Amount Carried at close of period 12/31/2023, Land	15,322,724
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	84,749,563
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	100,072,287
Accumulated Depreciation	(33,927,756)
Investment in Real Estate, Net	66,144,531
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Venue at the Promenade [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Castle Rock, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	312
Initial Cost to Company, Land	$ 8,355,048
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	83,752,689
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,003,370
Gross Amount Carried at close of period 12/31/2023, Land	8,355,048
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	84,756,059
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	93,111,107
Accumulated Depreciation	(18,249,114)
Investment in Real Estate, Net	74,861,993
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Verde Condominium Homes (fka Mission Verde, LLC) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Jose, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	108
Initial Cost to Company, Land	$ 5,190,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,679,109
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,728,363
Gross Amount Carried at close of period 12/31/2023, Land	5,190,700
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	15,407,472
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	20,598,172
Accumulated Depreciation	(12,866,340)
Investment in Real Estate, Net	7,731,832
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Veridian (fka Silver Spring) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Silver Spring, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	457
Initial Cost to Company, Land	$ 18,539,817
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	130,407,365
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,431,672
Gross Amount Carried at close of period 12/31/2023, Land	18,539,817
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	136,839,037
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	155,378,854
Accumulated Depreciation	(67,886,445)
Investment in Real Estate, Net	87,492,409
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Versailles [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Woodland Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	253
Initial Cost to Company, Land	$ 12,650,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,656,292
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,427,319
Gross Amount Carried at close of period 12/31/2023, Land	12,650,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	43,083,611
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	55,733,611
Accumulated Depreciation	(30,740,341)
Investment in Real Estate, Net	24,993,270
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Versailles (K-Town) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	225
Initial Cost to Company, Land	$ 10,590,975
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	44,409,025
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,831,899
Gross Amount Carried at close of period 12/31/2023, Land	10,590,975
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	47,240,924
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,831,899
Accumulated Depreciation	(24,671,051)
Investment in Real Estate, Net	33,160,848
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Victor on Venice [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	115
Initial Cost to Company, Land	$ 10,350,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	35,433,437
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,139,715
Gross Amount Carried at close of period 12/31/2023, Land	10,350,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	40,573,152
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	50,923,152
Accumulated Depreciation	(22,756,285)
Investment in Real Estate, Net	28,166,867
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Villa Solana [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Laguna Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	272
Initial Cost to Company, Land	$ 1,665,100
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,985,677
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,066,723
Gross Amount Carried at close of period 12/31/2023, Land	1,665,100
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,052,400
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	30,717,500
Accumulated Depreciation	(26,497,536)
Investment in Real Estate, Net	4,219,964
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Village at Del Mar Heights, The (fka Del Mar Heights) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	168
Initial Cost to Company, Land	$ 15,100,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	40,859,396
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,646,584
Gross Amount Carried at close of period 12/31/2023, Land	15,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,505,980
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	60,605,980
Accumulated Depreciation	(20,011,239)
Investment in Real Estate, Net	40,594,741
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Vintage at 425 Broadway (fka Promenade) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Monica, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	60
Initial Cost to Company, Land	$ 9,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,961,523
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,140,493
Gross Amount Carried at close of period 12/31/2023, Land	9,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	16,102,016
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	25,102,016
Accumulated Depreciation	(7,324,017)
Investment in Real Estate, Net	17,777,999
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Virginia Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	231
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	85,940,003
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,852,413
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	92,792,416
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	92,792,416
Accumulated Depreciation	(39,956,244)
Investment in Real Estate, Net	52,836,172
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Vista 99 (fka Tasman) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Jose, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	554
Initial Cost to Company, Land	$ 27,709,329
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	177,556,948
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,300,163
Gross Amount Carried at close of period 12/31/2023, Land	27,709,329
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	180,857,111
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	208,566,440
Accumulated Depreciation	(55,894,410)
Investment in Real Estate, Net	152,672,030
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Vista Del Lago [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Mission Viejo, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	608
Initial Cost to Company, Land	$ 4,525,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	40,736,293
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	26,012,880
Gross Amount Carried at close of period 12/31/2023, Land	4,525,800
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	66,749,173
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	71,274,973
Accumulated Depreciation	(59,975,988)
Investment in Real Estate, Net	11,298,985
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Walden Park [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Cambridge, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	232
Initial Cost to Company, Land	$ 12,448,888
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	52,044,448
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,648,651
Gross Amount Carried at close of period 12/31/2023, Land	12,448,888
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	57,693,099
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	70,141,987
Accumulated Depreciation	(29,126,694)
Investment in Real Estate, Net	41,015,293
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Water Park Towers [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	362
Initial Cost to Company, Land	$ 34,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	108,485,859
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	16,536,076
Gross Amount Carried at close of period 12/31/2023, Land	34,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	125,021,935
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	159,421,935
Accumulated Depreciation	(53,904,806)
Investment in Real Estate, Net	105,517,129
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Watertown Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Watertown, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	134
Initial Cost to Company, Land	$ 16,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	34,074,056
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,705,823
Gross Amount Carried at close of period 12/31/2023, Land	16,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,779,879
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	55,579,879
Accumulated Depreciation	(15,601,180)
Investment in Real Estate, Net	39,978,699
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Weaver, The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Austin, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	250
Initial Cost to Company, Land	$ 25,405,232
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	69,552,640
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	942,684
Gross Amount Carried at close of period 12/31/2023, Land	25,405,232
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	70,495,324
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	95,900,556
Accumulated Depreciation	(8,810,968)
Investment in Real Estate, Net	87,089,588
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
West 96th [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	209
Initial Cost to Company, Land	$ 84,800,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	67,055,501
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,095,791
Gross Amount Carried at close of period 12/31/2023, Land	84,800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	76,151,292
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	160,951,292
Accumulated Depreciation	(34,550,051)
Investment in Real Estate, Net	126,401,241
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
West End Apartments (fka Emerson Place/CRP II) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	310
Initial Cost to Company, Land	$ 469,546
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	163,123,022
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,092,334
Gross Amount Carried at close of period 12/31/2023, Land	469,546
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	170,215,356
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	170,684,902
Accumulated Depreciation	(90,900,140)
Investment in Real Estate, Net	79,784,762
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Westchester at Rockville [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Rockville, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	192
Initial Cost to Company, Land	$ 10,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	44,135,207
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,491,898
Gross Amount Carried at close of period 12/31/2023, Land	10,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	46,627,105
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	57,227,105
Accumulated Depreciation	(18,960,439)
Investment in Real Estate, Net	38,266,666
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Westerly [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Dallas, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	331
Initial Cost to Company, Land	$ 11,958,829
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	79,169,818
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	808,754
Gross Amount Carried at close of period 12/31/2023, Land	11,958,829
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	79,978,572
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	91,937,401
Accumulated Depreciation	(10,797,996)
Investment in Real Estate, Net	81,139,405
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Westmont [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	163
Initial Cost to Company, Land	$ 64,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,143,259
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,038,327
Gross Amount Carried at close of period 12/31/2023, Land	64,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	69,181,586
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	134,081,586
Accumulated Depreciation	(29,972,941)
Investment in Real Estate, Net	104,108,645
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Westside [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	204
Initial Cost to Company, Land	$ 34,200,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	56,962,630
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,437,079
Gross Amount Carried at close of period 12/31/2023, Land	34,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	61,399,709
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	95,599,709
Accumulated Depreciation	(25,691,497)
Investment in Real Estate, Net	69,908,212
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Windridge (CA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Laguna Niguel, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	344
Initial Cost to Company, Land	$ 2,662,900
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	23,985,497
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,863,783
Gross Amount Carried at close of period 12/31/2023, Land	2,662,900
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,849,280
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	41,512,180
Accumulated Depreciation	(35,333,767)
Investment in Real Estate, Net	6,178,413
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Wisconsin Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Chevy Chase, MD
Real Estate And Accumulated Depreciation Units | ApartmentUnit	432
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	172,089,355
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,425,504
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	174,514,859
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	174,514,859
Accumulated Depreciation	(71,043,768)
Investment in Real Estate, Net	103,471,091
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Woodleaf [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Campbell, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	178
Initial Cost to Company, Land	$ 8,550,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,988,183
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,932,641
Gross Amount Carried at close of period 12/31/2023, Land	8,550,600
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	24,920,824
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	33,471,424
Accumulated Depreciation	(20,333,249)
Investment in Real Estate, Net	13,138,175
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Zephyr on the Park [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	193
Initial Cost to Company, Land	$ 15,637,106
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	89,964,029
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	508,237
Gross Amount Carried at close of period 12/31/2023, Land	15,637,106
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	90,472,266
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	106,109,372
Accumulated Depreciation	(10,350,495)
Investment in Real Estate, Net	95,758,877
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Management Business [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	N/A
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	146,900,379
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	146,900,379
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	146,900,379
Accumulated Depreciation	(117,346,461)
Investment in Real Estate, Net	29,553,918
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Operating Partnership [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	N/A
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,381,683
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	5,381,683
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	5,381,683
Accumulated Depreciation	0
Investment in Real Estate, Net	5,381,683
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Other [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	N/A
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	139,699
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	139,699
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	139,699
Accumulated Depreciation	(107,085)
Investment in Real Estate, Net	32,614
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Wholly Owned Unencumbered [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Units | ApartmentUnit	68,916
Initial Cost to Company, Land	$ 4,803,002,687
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	17,835,391,731
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,162,596,539
Gross Amount Carried at close of period 12/31/2023, Land	4,803,002,687
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,997,988,270
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	24,800,990,957
Accumulated Depreciation	(8,491,300,503)
Investment in Real Estate, Net	16,309,690,454
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
1111 Belle Pre (fka The Madison) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alexandria, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	360
Initial Cost to Company, Land	$ 18,937,702
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	94,758,679
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,129,011
Gross Amount Carried at close of period 12/31/2023, Land	18,937,702
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	96,887,690
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	115,825,392
Accumulated Depreciation	(38,064,593)
Investment in Real Estate, Net	77,760,799
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 86,423,543
2501 Porter [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	202
Initial Cost to Company, Land	$ 13,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	75,271,179
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,579,027
Gross Amount Carried at close of period 12/31/2023, Land	13,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	83,850,206
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	96,850,206
Accumulated Depreciation	(37,053,984)
Investment in Real Estate, Net	59,796,222
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
300 East 39th (fka East 39th) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	254
Initial Cost to Company, Land	$ 48,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	96,174,639
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,535,816
Gross Amount Carried at close of period 12/31/2023, Land	48,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	104,710,455
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	153,610,455
Accumulated Depreciation	(44,008,723)
Investment in Real Estate, Net	109,601,732
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 61,781,539
303 East 83rd (fka Camargue) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	261
Initial Cost to Company, Land	$ 79,400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	79,122,624
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	14,669,737
Gross Amount Carried at close of period 12/31/2023, Land	79,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	93,792,361
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	173,192,361
Accumulated Depreciation	(42,481,189)
Investment in Real Estate, Net	$ 130,711,172
Artisan Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Northridge, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	140
Initial Cost to Company, Land	$ 7,000,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	20,537,359
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	3,027,258
Gross Amount Carried at close of period 12/31/2023, Land	7,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,564,617
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	30,564,617
Accumulated Depreciation	(16,607,074)
Investment in Real Estate, Net	13,957,543
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 35,662,809
Avanti [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Anaheim, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	162
Initial Cost to Company, Land	$ 12,960,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,497,683
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,712,439
Gross Amount Carried at close of period 12/31/2023, Land	12,960,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,210,122
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	36,170,122
Accumulated Depreciation	(14,816,612)
Investment in Real Estate, Net	21,353,510
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 28,073,517
Avenir Apartments [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Boston, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	241
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	114,321,619
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,511,355
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	122,832,974
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	122,832,974
Accumulated Depreciation	(50,573,694)
Investment in Real Estate, Net	72,259,280
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 850,000
City Pointe [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fullerton, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	183
Initial Cost to Company, Land	$ 6,863,792
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	36,476,208
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,969,717
Gross Amount Carried at close of period 12/31/2023, Land	6,863,792
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	42,445,925
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	49,309,717
Accumulated Depreciation	(21,723,936)
Investment in Real Estate, Net	27,585,781
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 39,664,995
Cleveland House [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	214
Initial Cost to Company, Land	$ 18,300,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	66,392,414
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,164,220
Gross Amount Carried at close of period 12/31/2023, Land	18,300,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	75,556,634
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	93,856,634
Accumulated Depreciation	(31,747,411)
Investment in Real Estate, Net	62,109,223
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Elevé [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Glendale, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	208
Initial Cost to Company, Land	$ 14,080,560
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	56,419,440
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,898,510
Gross Amount Carried at close of period 12/31/2023, Land	14,080,560
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	58,317,950
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	72,398,510
Accumulated Depreciation	(22,068,088)
Investment in Real Estate, Net	50,330,422
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 38,438,100
Estancia at Santa Clara (fka Santa Clara) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Santa Clara, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	450
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	123,759,804
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,018,382
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	133,778,186
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	133,778,186
Accumulated Depreciation	(54,209,519)
Investment in Real Estate, Net	79,568,667
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Fairchase [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Fairfax, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	392
Initial Cost to Company, Land	$ 23,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	87,722,321
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,395,439
Gross Amount Carried at close of period 12/31/2023, Land	23,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	92,117,760
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	115,617,760
Accumulated Depreciation	(36,947,609)
Investment in Real Estate, Net	$ 78,670,151
Flats at DuPont Circle [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	306
Initial Cost to Company, Land	$ 35,200,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	108,768,198
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,119,373
Gross Amount Carried at close of period 12/31/2023, Land	35,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	114,887,571
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	150,087,571
Accumulated Depreciation	(45,726,981)
Investment in Real Estate, Net	$ 104,360,590
Glo [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	201
Initial Cost to Company, Land	$ 16,047,023
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	48,650,963
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,749,785
Gross Amount Carried at close of period 12/31/2023, Land	16,047,023
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	53,400,748
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	69,447,771
Accumulated Depreciation	(25,591,509)
Investment in Real Estate, Net	43,856,262
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 33,040,681
Heights on Capitol Hill [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	104
Initial Cost to Company, Land	$ 5,425,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	21,138,028
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,561,602
Gross Amount Carried at close of period 12/31/2023, Land	5,425,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,699,630
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	29,124,630
Accumulated Depreciation	(14,248,969)
Investment in Real Estate, Net	14,875,661
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 22,611,034
Kelvin Court (fka Alta Pacific) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Irvine, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	132
Initial Cost to Company, Land	$ 10,752,145
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	34,846,856
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,901,431
Gross Amount Carried at close of period 12/31/2023, Land	10,752,145
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	37,748,287
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	48,500,432
Accumulated Depreciation	(19,504,163)
Investment in Real Estate, Net	28,996,269
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 26,274,230
Kenwood Mews [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Burbank, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	141
Initial Cost to Company, Land	$ 14,100,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	24,662,883
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,645,398
Gross Amount Carried at close of period 12/31/2023, Land	14,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,308,281
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	43,408,281
Accumulated Depreciation	(18,949,257)
Investment in Real Estate, Net	24,459,024
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 37,664,400
La Terrazza at Colma Station [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Colma, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	155
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	41,251,044
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,164,137
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	46,415,181
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	46,415,181
Accumulated Depreciation	(26,522,851)
Investment in Real Estate, Net	19,892,330
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 25,050,483
Lindley Apartments [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Encino, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	129
Initial Cost to Company, Land	$ 5,805,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	25,705,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,920,637
Gross Amount Carried at close of period 12/31/2023, Land	5,805,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	30,625,637
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	36,430,637
Accumulated Depreciation	(14,344,051)
Investment in Real Estate, Net	22,086,586
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 28,071,118
Lofts 590 [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Arlington, VA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	212
Initial Cost to Company, Land	$ 20,100,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	67,909,023
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,030,805
Gross Amount Carried at close of period 12/31/2023, Land	20,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	69,939,828
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	90,039,828
Accumulated Depreciation	(27,620,612)
Investment in Real Estate, Net	62,419,216
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 43,082,769
Longview Place [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Waltham, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	348
Initial Cost to Company, Land	$ 20,880,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	90,255,509
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,894,429
Gross Amount Carried at close of period 12/31/2023, Land	20,880,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	106,149,938
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	127,029,938
Accumulated Depreciation	(65,958,574)
Investment in Real Estate, Net	61,071,364
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 84,368,535
Mark On 8th [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	174
Initial Cost to Company, Land	$ 23,004,387
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	51,116,647
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	807,153
Gross Amount Carried at close of period 12/31/2023, Land	23,004,387
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	51,923,800
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	74,928,187
Accumulated Depreciation	(14,084,735)
Investment in Real Estate, Net	$ 60,843,452
Metro on First [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	106
Initial Cost to Company, Land	$ 8,540,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	12,209,981
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,839,628
Gross Amount Carried at close of period 12/31/2023, Land	8,540,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	17,049,609
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	25,589,609
Accumulated Depreciation	(9,954,415)
Investment in Real Estate, Net	15,635,194
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 21,514,520
Moda [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	251
Initial Cost to Company, Land	$ 12,649,228
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	36,842,012
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,990,545
Gross Amount Carried at close of period 12/31/2023, Land	12,649,228
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	39,832,557
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	52,481,785
Accumulated Depreciation	(20,236,076)
Investment in Real Estate, Net	$ 32,245,709
Montierra (CA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	272
Initial Cost to Company, Land	$ 8,160,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	29,360,938
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,884,277
Gross Amount Carried at close of period 12/31/2023, Land	8,160,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,245,215
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	53,405,215
Accumulated Depreciation	(31,866,121)
Investment in Real Estate, Net	21,539,094
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 61,087,211
Notch [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Newcastle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	158
Initial Cost to Company, Land	$ 5,463,324
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	43,490,989
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	490,130
Gross Amount Carried at close of period 12/31/2023, Land	5,463,324
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	43,981,119
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	49,444,443
Accumulated Depreciation	(7,198,601)
Investment in Real Estate, Net	$ 42,245,842
Old Town Lofts [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	149
Initial Cost to Company, Land	$ 7,740,467
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	44,146,181
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,406,975
Gross Amount Carried at close of period 12/31/2023, Land	7,740,467
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	45,553,156
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	53,293,623
Accumulated Depreciation	(15,844,032)
Investment in Real Estate, Net	37,449,591
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 35,607,063
Olympus Towers [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	328
Initial Cost to Company, Land	$ 14,752,034
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	73,335,425
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	15,130,891
Gross Amount Carried at close of period 12/31/2023, Land	14,752,034
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	88,466,316
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	103,218,350
Accumulated Depreciation	(60,604,642)
Investment in Real Estate, Net	42,613,708
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 94,849,343
Park Place at San Mateo (fka San Mateo) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Mateo, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	575
Initial Cost to Company, Land	$ 71,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	211,907,141
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	22,480,322
Gross Amount Carried at close of period 12/31/2023, Land	71,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	234,387,463
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	306,287,463
Accumulated Depreciation	(98,109,758)
Investment in Real Estate, Net	$ 208,177,705
Red 160 (fka Redmond Way) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Redmond, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	250
Initial Cost to Company, Land	$ 15,546,376
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	65,320,010
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,155,187
Gross Amount Carried at close of period 12/31/2023, Land	15,546,376
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	69,475,197
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	85,021,573
Accumulated Depreciation	(30,161,561)
Investment in Real Estate, Net	$ 54,860,012
Skyhouse Denver [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Denver, CO
Real Estate And Accumulated Depreciation Units | ApartmentUnit	361
Initial Cost to Company, Land	$ 13,562,331
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	126,360,318
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,845,618
Gross Amount Carried at close of period 12/31/2023, Land	13,562,331
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	129,205,936
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	142,768,267
Accumulated Depreciation	(30,901,861)
Investment in Real Estate, Net	111,866,406
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 74,264,209
SoMa Square Apartments (fka South Market) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Francisco, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	410
Initial Cost to Company, Land	$ 79,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	177,316,977
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	24,171,007
Gross Amount Carried at close of period 12/31/2023, Land	79,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	201,487,984
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	281,387,984
Accumulated Depreciation	(84,134,370)
Investment in Real Estate, Net	$ 197,253,614
Teresina [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Chula Vista, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	440
Initial Cost to Company, Land	$ 28,600,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	61,916,670
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,708,402
Gross Amount Carried at close of period 12/31/2023, Land	28,600,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	71,625,072
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	100,225,072
Accumulated Depreciation	(44,273,739)
Investment in Real Estate, Net	55,951,333
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 37,940,000
Vintage [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Ontario, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	300
Initial Cost to Company, Land	$ 7,059,230
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	47,677,762
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	7,293,204
Gross Amount Carried at close of period 12/31/2023, Land	7,059,230
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	54,970,966
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	62,030,196
Accumulated Depreciation	(30,742,125)
Investment in Real Estate, Net	31,288,071
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 49,187,924
West 54th [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	New York, NY
Real Estate And Accumulated Depreciation Units | ApartmentUnit	222
Initial Cost to Company, Land	$ 60,900,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	48,193,837
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,751,094
Gross Amount Carried at close of period 12/31/2023, Land	60,900,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	53,944,931
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	114,844,931
Accumulated Depreciation	(24,620,479)
Investment in Real Estate, Net	90,224,452
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	50,217,548
Portfolio/Entity Encumbrances [Member]
Real Estate And Accumulated Depreciation Abstract
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 546,784,016
Investment in Real Estate - Wholly Owned Encumbered [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Units | ApartmentUnit	8,215
Initial Cost to Company, Land	$ 709,512,459
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,166,730,519
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	220,937,800
Gross Amount Carried at close of period 12/31/2023, Land	709,512,459
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	2,387,668,319
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	3,097,180,778
Accumulated Depreciation	(1,052,189,478)
Investment in Real Estate, Net	2,044,991,300
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 1,604,630,478
2300 Elliott [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Seattle, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	92
Initial Cost to Company, Land	$ 796,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,173,725
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,206,588
Gross Amount Carried at close of period 12/31/2023, Land	796,800
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	15,380,313
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	16,177,113
Accumulated Depreciation	(13,898,731)
Investment in Real Estate, Net	2,278,382
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Bellevue Meadows [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bellevue, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	180
Initial Cost to Company, Land	$ 4,507,100
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	12,574,814
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,750,894
Gross Amount Carried at close of period 12/31/2023, Land	4,507,100
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	21,325,708
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	25,832,808
Accumulated Depreciation	(16,675,884)
Investment in Real Estate, Net	9,156,924
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Canyon Ridge [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Diego, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	162
Initial Cost to Company, Land	$ 4,869,448
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,955,064
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	5,206,979
Gross Amount Carried at close of period 12/31/2023, Land	4,869,448
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	17,162,043
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	22,031,491
Accumulated Depreciation	(14,449,448)
Investment in Real Estate, Net	7,582,043
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Country Oaks [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Agoura Hills, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	256
Initial Cost to Company, Land	$ 6,105,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	29,561,865
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,548,710
Gross Amount Carried at close of period 12/31/2023, Land	6,105,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	38,110,575
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	44,215,575
Accumulated Depreciation	(28,244,746)
Investment in Real Estate, Net	15,970,829
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Lantern Cove [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Foster City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	232
Initial Cost to Company, Land	$ 6,945,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	23,064,976
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	9,338,195
Gross Amount Carried at close of period 12/31/2023, Land	6,945,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	32,403,171
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	39,348,171
Accumulated Depreciation	(24,847,843)
Investment in Real Estate, Net	14,500,328
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Radius Koreatown [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	301
Initial Cost to Company, Land	$ 32,494,154
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	84,645,202
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,545,484
Gross Amount Carried at close of period 12/31/2023, Land	32,494,154
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	86,190,686
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	118,684,840
Accumulated Depreciation	(25,090,360)
Investment in Real Estate, Net	93,594,480
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Rosecliff [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Quincy, MA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	156
Initial Cost to Company, Land	$ 5,460,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,721,570
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	6,063,052
Gross Amount Carried at close of period 12/31/2023, Land	5,460,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	21,784,622
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	27,244,622
Accumulated Depreciation	(17,339,132)
Investment in Real Estate, Net	9,905,490
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Schooner Bay I [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Foster City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	168
Initial Cost to Company, Land	$ 5,345,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	20,390,618
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,933,453
Gross Amount Carried at close of period 12/31/2023, Land	5,345,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,324,071
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	34,669,071
Accumulated Depreciation	(21,365,717)
Investment in Real Estate, Net	13,303,354
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Schooner Bay II [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Foster City, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	144
Initial Cost to Company, Land	$ 4,550,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,064,764
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	8,025,150
Gross Amount Carried at close of period 12/31/2023, Land	4,550,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	26,089,914
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	30,639,914
Accumulated Depreciation	(18,942,122)
Investment in Real Estate, Net	11,697,792
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
St Johns West [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Austin, TX
Real Estate And Accumulated Depreciation Units | ApartmentUnit	297
Initial Cost to Company, Land	$ 10,097,109
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	47,928,229
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	1,280,572
Gross Amount Carried at close of period 12/31/2023, Land	10,097,109
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	49,208,801
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	59,305,910
Accumulated Depreciation	(9,223,103)
Investment in Real Estate, Net	50,082,807
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Venn at Main [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Bellevue, WA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	350
Initial Cost to Company, Land	$ 26,626,497
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	151,520,448
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,293,697
Gross Amount Carried at close of period 12/31/2023, Land	26,626,497
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	153,814,145
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	180,440,642
Accumulated Depreciation	(38,628,434)
Investment in Real Estate, Net	141,812,208
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Virgil Square [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Los Angeles, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	142
Initial Cost to Company, Land	$ 5,500,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,216,613
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	4,425,861
Gross Amount Carried at close of period 12/31/2023, Land	5,500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	19,642,474
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	25,142,474
Accumulated Depreciation	(13,082,386)
Investment in Real Estate, Net	12,060,088
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Partially Owned Unencumbered [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Units | ApartmentUnit	2,792
Initial Cost to Company, Land	$ 149,162,480
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	557,664,823
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	72,627,255
Gross Amount Carried at close of period 12/31/2023, Land	149,162,480
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	630,292,078
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	779,454,558
Accumulated Depreciation	(244,736,257)
Investment in Real Estate, Net	534,718,301
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Aero Apartments [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Alameda, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	200
Initial Cost to Company, Land	$ 13,107,242
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	100,519,872
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	104,683
Gross Amount Carried at close of period 12/31/2023, Land	13,107,242
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	100,624,555
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	113,731,797
Accumulated Depreciation	(10,818,873)
Investment in Real Estate, Net	102,912,924
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Canyon Creek (CA) [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	San Ramon, CA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	268
Initial Cost to Company, Land	$ 5,425,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,812,121
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,774,513
Gross Amount Carried at close of period 12/31/2023, Land	5,425,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,586,634
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	35,011,634
Accumulated Depreciation	(22,111,181)
Investment in Real Estate, Net	12,900,453
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 28,271,943
Reverb Fka 9th And W [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Washington, D.C.
Real Estate And Accumulated Depreciation Units | ApartmentUnit	0
Initial Cost to Company, Land	$ 0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	104,651,437
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	0
Gross Amount Carried at close of period 12/31/2023, Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	104,660,057
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	104,660,057
Accumulated Depreciation	0
Investment in Real Estate, Net	101,711,706
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 0
Baxter Decatur The [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Description Of Location	Decatur, GA
Real Estate And Accumulated Depreciation Units | ApartmentUnit	290
Initial Cost to Company, Land	$ 11,783,860
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	70,317,555
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	146,488
Gross Amount Carried at close of period 12/31/2023, Land	11,783,860
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	70,464,043
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	82,247,903
Accumulated Depreciation	(3,698,478)
Investment in Real Estate, Net	78,549,425
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 42,120,891
Partially Owned Encumbered [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Units | ApartmentUnit	268
Initial Cost to Company, Land	$ 5,425,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,812,121
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	10,774,513
Gross Amount Carried at close of period 12/31/2023, Land	5,425,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	29,586,634
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	35,011,634
Accumulated Depreciation	(22,111,181)
Investment in Real Estate, Net	12,900,453
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 28,271,943
Total Consolidated Investment in Real Estate [Member]
Real Estate And Accumulated Depreciation Abstract
Real Estate And Accumulated Depreciation Units | ApartmentUnit	80,191
Initial Cost to Company, Land	$ 5,667,102,626
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	20,578,599,194
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Building And Fixtures	2,466,936,107
Gross Amount Carried at close of period 12/31/2023, Land	5,667,102,626
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements And Furnitures And Fixtures	23,045,535,301
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements And Furnitures And Fixtures	28,712,637,927
Accumulated Depreciation	(9,810,337,419)
Investment in Real Estate, Net	18,902,300,508
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances	$ 1,632,902,421

Schedule III - Real Estate an_7

Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Real Estate And Accumulated Depreciation [Line Items]
Furniture, fixtures and equipment	$ 2,609,600,000	$ 2,352,050,000
Land and depreciable property net	12,700,000,000
Depreciable Property [Member]
Real Estate And Accumulated Depreciation [Line Items]
Furniture, fixtures and equipment	$ 2,609,600,391
Building [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	30 years
Renovations and Improvements Minimum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	5 years
Renovations and Improvements Maximum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	15 years
Replacements Minimum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	5 years
Replacements Maximum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	10 years
Management Business Renovations and Improvements Minimum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	3 years
Management Business Renovations and Improvements Maximum [Member]
Real Estate And Accumulated Depreciation Abstract
Property, Plant and Equipment, Estimated Useful Lives	7 years