SmartStop Self Storage REIT (STSFF) 10-K 26 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 18, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	SmartStop Self Storage REIT, Inc.
Entity Central Index Key	0001585389
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 623,169,019
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity File Number	000-55617
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	46-1722812
Entity Interactive Data Current	Yes
Entity Address, Address Line One	10 Terrace Rd
Entity Address, City or Town	Ladera Ranch
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92694
City Area Code	877
Local Phone Number	327-3485
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Documents Incorporated by Reference: The registrant incorporates by reference in Part III (Items 10, 11, 12, 13 and 14) of this Form 10-K portions of its Definitive Proxy Statement for the 2021 Annual Meeting of Stockholders.
Class A Common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		76,092,445
Class T Common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,948,354

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Real estate facilities:
Land	$ 335,800,354	$ 332,350,688
Buildings	810,480,845	780,969,455
Site improvements	63,821,383	60,505,225
Real estate investment property, gross	1,210,102,582	1,173,825,368
Accumulated depreciation	(115,903,045)	(83,692,491)
Real estate investment property	1,094,199,537	1,090,132,877
Construction in process	1,761,303	12,237,722
Real estate facilities, net	1,095,960,840	1,102,370,599
Cash and cash equivalents	72,705,624	62,279,757
Restricted cash	7,952,052	6,291,366
Investments in and advances to Managed REITs	15,624,389	6,072,399
Other assets, net	7,734,276	6,318,037
Intangible assets, net of accumulated amortization	12,406,427	30,040,426
Trademarks, net of accumulated amortization	16,194,118	19,688,167
Goodwill	53,643,331	78,372,980
Total assets	1,282,221,057	1,311,433,731
LIABILITIES AND EQUITY
Debt, net	717,952,233	712,733,002
Accounts payable and accrued liabilities	23,038,976	18,576,230
Due to affiliates	667,429	1,624,474
Distributions payable	6,650,317	5,159,105
Contingent earnout	28,600,000	31,100,000
Deferred tax liability	8,380,215	6,609,571
Total liabilities	785,289,170	775,802,382
Commitments and contingencies (Note 13)
Redeemable common stock / Preferred stock	57,335,575	43,391,362
Equity:
Additional paid-in capital	492,408,006	491,433,240
Distributions	(163,953,169)	(128,642,787)
Accumulated deficit	(141,444,880)	(87,090,486)
Accumulated other comprehensive loss	(3,834,228)	(1,955,335)
Total SmartStop Self Storage REIT, Inc. equity	183,236,294	273,803,767
Noncontrolling interests in our Operating Partnership	59,982,111	71,988,256
Other noncontrolling interests	21,800	21,800
Total noncontrolling interests	60,003,911	72,010,056
Total equity	243,240,205	345,813,823
Total liabilities and equity	1,282,221,057	1,311,433,731
Preferred Stock
LIABILITIES AND EQUITY
Redeemable common stock / Preferred stock	0	0
Equity:
Total equity	196,356,107	146,426,164
Series A Convertible Preferred Stock
LIABILITIES AND EQUITY
Redeemable common stock / Preferred stock	196,356,107	146,426,164
Class A Common stock
Equity:
Common stock, value	52,661	51,435
Class T Common stock
Equity:
Common stock, value	$ 7,904	$ 7,700

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Preferred Stock
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred Stock, shares authorized	200,000,000	200,000,000
Series A Convertible Preferred Stock
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred Stock, shares authorized	200,000	200,000
Preferred Stock, shares issued	200,000	150,000
Preferred Stock, shares outstanding	200,000	150,000
Preferred Stock, liquidation preference, value	$ 202,928,620	$ 151,665,753
Class A Common stock
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	350,000,000	350,000,000
Common Stock, shares issued	52,660,402	51,435,124
Common Stock, shares outstanding	52,660,402	51,435,124
Class T Common stock
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	350,000,000	350,000,000
Common Stock, shares issued	7,903,911	7,699,893
Common Stock, shares outstanding	7,903,911	7,699,893

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Total revenues	$ 124,024,363	$ 109,528,549	$ 80,412,257
Operating expenses:
General and administrative	16,471,199	10,461,453	4,848,447
Depreciation	32,294,627	29,605,278	20,379,694
Intangible amortization expense	9,777,116	11,493,394	2,422,997
Self administration transaction expenses	0	1,572,238	0
Acquisition expenses – affiliates	0	84,061	72,179
Other acquisition expenses	1,366,092	141,489	1,054,159
Contingent earnout adjustment	(2,500,000)	200,000	0
Impairment of goodwill and intangible assets	36,465,732	0	0
Impairment of investments in Managed REITs	4,376,879	0	0
Total operating expenses	145,164,573	101,885,233	64,260,814
Gain on sale of real estate	0	3,944,696	0
Operating income (loss)	(21,140,210)	11,588,012	16,151,443
Other income (expense):
Interest expense	(32,597,613)	(37,563,247)	(18,002,274)
Interest expense – accretion of fair market value of secured debt	130,682	131,611	413,353
Interest expense – debt issuance costs	(3,586,381)	(3,996,676)	(1,582,049)
Net loss on extinguishment of debt	0	(2,647,633)	0
Gain resulting from acquisition of unconsolidated affiliates	0	8,017,353	0
Other	5,986,719	(624,958)	(701,203)
Net loss	(51,206,803)	(25,095,538)	(3,720,730)
Net loss attributable to the noncontrolling interests in our Operating Partnership	6,901,931	2,010,959	22,353
Less: Distributions to preferred stockholders	(10,049,522)	(1,665,754)	0
Net loss attributable to SmartStop Self Storage REIT, Inc. common stockholders	(54,354,394)	(24,750,333)	(3,698,377)
Self Storage Rental Revenue
Revenues:
Total revenues	104,888,883	99,494,560	78,473,091
Ancillary Operating Revenue
Revenues:
Total revenues	5,286,042	3,706,700	1,939,166
Managed REIT Platform Revenue
Revenues:
Total revenues	8,048,630	3,068,306	0
Reimbursable Costs from Managed REITs
Revenues:
Total revenues	5,800,808	3,258,983	0
Operating expenses:
Operating expenses	5,800,808	3,258,983	0
Property Operating Expenses
Operating expenses:
Operating expenses	38,305,199	35,723,111	25,228,704
Property Operating Expenses – Affiliates
Operating expenses:
Operating expenses	0	6,605,670	10,254,634
Managed REIT Platform Expenses
Operating expenses:
Operating expenses	$ 2,806,921	$ 2,739,556	$ 0
Class A Common stock
Other income (expense):
Net loss per share-basic and diluted	$ (0.91)	$ (0.42)	$ (0.06)
Weighted average shares outstanding-basic and diluted	51,813,718	50,734,472	49,902,967
Class T Common stock
Other income (expense):
Net loss per share-basic and diluted	$ (0.91)	$ (0.42)	$ (0.06)
Weighted average shares outstanding-basic and diluted	7,802,689	7,607,654	7,441,250

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (51,206,803)	$ (25,095,538)	$ (3,720,730)
Other comprehensive income (loss):
Foreign currency translation adjustment	965,103	2,371,517	(4,850,547)
Foreign currency hedge contract gains (losses)	(596,969)	(3,226,682)	5,251,438
Interest rate swap and cap contract losses	(2,541,625)	(2,575,366)	(379,745)
Other comprehensive gain (loss)	(2,173,491)	(3,430,531)	21,146
Comprehensive loss	(53,380,294)	(28,526,069)	(3,699,584)
Comprehensive loss attributable to noncontrolling interests:
Comprehensive loss attributable to the noncontrolling interests in our Operating Partnership	7,196,529	2,095,801	22,226
Comprehensive loss attributable to SmartStop Self Storage REIT, Inc. common stockholders	$ (46,183,765)	$ (26,430,268)	$ (3,677,358)

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($)	Total	SSGT Mergers	Self Administration Transaction	Redeemable Common Stock	Common StockClass A Common stock	Common StockClass T Common stock	Additional Paid-in Capital	Distributions	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total SmartStop Self Storage REIT, Inc. Equity	Noncontrolling Interests	Noncontrolling InterestsSSGT Mergers	Noncontrolling InterestsSelf Administration Transaction	Preferred Stock
Beginning Balance at Dec. 31, 2017	$ 382,938,024			$ 24,497,059	$ 49,386	$ 7,351	$ 496,287,890	$ (60,561,504)	$ (58,641,776)	$ 1,369,208	$ 378,510,555	$ 4,427,469
Beginning Balance (in shares) at Dec. 31, 2017					49,386,092	7,350,142
Conversion of OP Units to common stock					$ 483		4,253,526				4,254,009	(4,254,009)
Conversion of OP Units to common stock (in shares)					483,124
Redemption of interest in subsidiary	(125,000)						(125,000)				(125,000)
Offering costs	(16,902)						(16,902)				(16,902)
Issuance of restricted stock	11				$ 11						11
Issuance of restricted stock (in shares)					10,500
Changes to redeemable common stock	(16,055,585)			16,055,585			(16,055,585)				(16,055,585)
Redemptions of common stock	(788)			(8,325,829)	$ (768)	$ (20)					(788)
Redemptions of common stock (in shares)					(768,313)	(19,664)
Distributions	(33,686,822)							(33,686,822)			(33,686,822)
Distributions to noncontrolling interests	(228,863)											(228,863)
Issuance of shares for distribution reinvestment plan	16,057,113				$ 1,325	$ 203	16,055,585				16,057,113
Issuance of shares for distribution reinvestment plan (in shares)					1,325,656	203,312
Equity based compensation expense	75,293						75,293				75,293
Net loss attributable to SmartStop Self Storage REIT, Inc. common stockholders	(3,698,377)								(3,698,377)		(3,698,377)
Net loss attributable to the noncontrolling interests in our Operating Partnership	(22,353)											(22,353)
Foreign currency translation adjustment	(4,850,547)									(4,850,547)	(4,850,547)
Foreign currency forward contract gain (loss)	5,251,438									5,251,438	5,251,438
Interest rate swap and cap contract losses	(379,745)									(379,745)	(379,745)
Ending Balance at Dec. 31, 2018	345,256,897			32,226,815	$ 50,437	$ 7,534	500,474,807	(94,248,326)	(62,340,153)	1,390,354	345,334,653	(77,756)
Ending Balance (in shares) at Dec. 31, 2018					50,437,059	7,533,790
Offering costs	(42,039)						(42,039)				(42,039)
Issuance of preferred stock															$ 150,000,000
Preferred stock issuance costs															(3,573,836)
Issuance of limited partnership units in our Operating Partnership in connection with the SSGT Mergers/Self Administration Transaction		$ 4,217,399	$ 63,643,000										$ 4,217,399	$ 63,643,000
Issuance of limited partnership units in our Operating Partnership in exchange for special limited partnership interest	18,800,000						9,687,035				9,687,035	9,112,965
Contribution of special limited partnership interest in exchange for limited partnership interests in our Operating Partnership	(18,800,000)						(18,800,000)				(18,800,000)
Noncontrolling interests related to the consolidated Tenant Programs joint ventures	21,800											21,800
Redemption of limited partnership interests held by our Former Advisor	(200,000)						(291,103)				(291,103)	91,103
Issuance of restricted stock	252				$ 252						252
Issuance of restricted stock (in shares)					251,993
Changes to redeemable common stock	(16,045,030)			16,046,535			(16,045,030)				(16,045,030)
Redemptions of common stock	(592)			(4,881,988)	$ (557)	$ (35)					(592)
Redemptions of common stock (in shares)					(556,575)	(35,079)
Distributions	(34,394,461)							(34,394,461)			(34,394,461)
Distributions to noncontrolling interests	(2,902,654)											(2,902,654)
Issuance of shares for distribution reinvestment plan	16,046,534				$ 1,303	$ 201	16,045,030				16,046,534
Issuance of shares for distribution reinvestment plan (in shares)					1,302,647	201,182
Equity based compensation expense	404,540						404,540				404,540
Net loss attributable to SmartStop Self Storage REIT, Inc. common stockholders	(24,750,333)								(24,750,333)		(24,750,333)
Net loss attributable to the noncontrolling interests in our Operating Partnership	(2,010,959)											(2,010,959)
Foreign currency translation adjustment	2,371,517									2,311,488	2,311,488	60,029
Foreign currency forward contract gain (loss)	(3,226,682)									(3,030,727)	(3,030,727)	(195,955)
Interest rate swap and cap contract losses	(2,575,366)									(2,626,450)	(2,626,450)	51,084
Ending Balance at Dec. 31, 2019	345,813,823			43,391,362	$ 51,435	$ 7,700	491,433,240	(128,642,787)	(87,090,486)	(1,955,335)	273,803,767	72,010,056			146,426,164
Ending Balance (in shares) at Dec. 31, 2019					51,435,124	7,699,893
Offering costs	(46,907)						(46,907)				(46,907)
Issuance of preferred stock															50,000,000
Preferred stock issuance costs															(70,057)
Issuance of restricted stock	72				$ 72						72
Issuance of restricted stock (in shares)					71,567
Changes to redeemable common stock	(15,954,081)			15,954,081			(15,954,081)				(15,954,081)
Redemptions of common stock	(165)			(2,009,868)	$ (165)						(165)
Redemptions of common stock (in shares)					(164,894)
Distributions	(35,310,382)							(35,310,382)			(35,310,382)
Distributions to noncontrolling interests	(5,525,293)											(5,525,293)
Issuance of shares for distribution reinvestment plan	15,954,081				$ 1,319	$ 204	15,952,558				15,954,081
Issuance of shares for distribution reinvestment plan (in shares)					1,318,605	204,018
Equity based compensation expense	1,738,873						1,023,196				1,023,196	715,677
Net loss attributable to SmartStop Self Storage REIT, Inc. common stockholders	(54,354,394)								(54,354,394)		(54,354,394)
Net loss attributable to the noncontrolling interests in our Operating Partnership	(6,901,931)											(6,901,931)
Foreign currency translation adjustment	965,103									845,698	845,698	119,405
Foreign currency forward contract gain (loss)	(596,969)									(525,540)	(525,540)	(71,429)
Interest rate swap and cap contract losses	(2,541,625)									(2,199,051)	(2,199,051)	(342,574)
Ending Balance at Dec. 31, 2020	$ 243,240,205			$ 57,335,575	$ 52,661	$ 7,904	$ 492,408,006	$ (163,953,169)	$ (141,444,880)	$ (3,834,228)	$ 183,236,294	$ 60,003,911			$ 196,356,107
Ending Balance (in shares) at Dec. 31, 2020					52,660,402	7,903,911

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net loss	$ (51,206,803)	$ (25,095,538)	$ (3,720,730)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	42,071,743	41,098,672	22,802,691
Change in deferred tax liability	(5,926,732)	(806,083)	0
Accretion of fair market value adjustment of secured debt	(130,682)	(131,611)	(413,353)
Amortization of debt issuance costs	3,586,381	3,996,676	1,582,049
Equity based compensation expense	1,738,873	404,540	75,293
Contingent earnout adjustment	(2,500,000)	200,000	0
Impairment of goodwill and intangible assets	36,465,732	0	0
Impairment of investments in Managed REITs	4,376,879	0	0
Unrealized foreign currency and derivative (gains) losses	(93,878)	(797,999)	151,777
Net loss on extinguishment of debt	0	2,647,633	0
Gain resulting from acquisition of unconsolidated affiliates	0	(8,017,353)	0
Gain on sale of real estate	0	(3,944,696)	0
Increase (decrease) in cash from changes in assets and liabilities:
Other assets, net	(1,170,734)	(835,114)	(1,237,429)
Accounts payable and accrued liabilities	298,510	1,576,029	(794,156)
Managed REITs receivables	(428,284)	(122,629)	0
Due to affiliates	(311,134)	(405,505)	(87,017)
Net cash provided by operating activities	26,769,871	9,767,022	18,359,125
Cash flows from investing activities:
Purchase of real estate	(612,892)	(9,435,343)	0
Additions to real estate	(14,946,580)	(12,291,574)	(1,952,738)
Deposits on acquisition of real estate facilities	(298,317)	(200,000)	0
Redemption of SSGT II Preferred Units	19,000,000	0	0
Settlement of foreign currency hedges	398,951	918,558	2,132,261
SSGT Mergers, net of cash acquired	0	(345,538,595)	0
Self Administration Transaction, net of cash acquired	0	(3,292,958)	0
Investment in real estate joint ventures	0	0	(3,358,814)
Net proceeds from the sale of real estate	0	15,721,610	0
Purchase of foreign currency hedge	0	(147,347)	0
Settlement of company owned life insurance	0	3,122,962	0
Proceeds from sale of real estate joint venture	0	3,358,814	0
Net cash used in investing activities	(28,958,838)	(347,783,873)	(3,179,291)
Cash flows from financing activities:
Gross proceeds from issuance of debt	341,717	535,852,363	91,229,806
Repayment of debt	0	(251,732,077)	(72,513,082)
Scheduled principal payments on debt	(701,136)	(802,789)	(1,892,622)
Debt issuance costs	(4,537)	(8,531,362)	(1,892,495)
Common stock offering costs	(656,524)	(709,842)	(693,971)
Gross proceeds from issuance of preferred stock	50,000,000	150,000,000	0
Preferred stock issuance costs	(70,057)	(3,573,836)	0
Redemption of common stock	(1,708,305)	(5,740,677)	(7,758,830)
Distributions paid to preferred stockholders	(8,786,655)	0	0
Distributions paid to common stockholders	(19,160,171)	(18,207,418)	(17,566,799)
Distributions paid to noncontrolling interests in our Operating Partnership	(5,514,994)	(2,440,247)	(253,480)
Redemption of noncontrolling interest	0	(200,000)	(125,000)
Debt defeasance costs	0	(1,690,703)	0
Prepaid debt issuance costs	0	0	(1,075,000)
Net cash provided by (used in) financing activities	13,739,338	392,223,412	(12,541,473)
Impact of foreign exchange rate changes on cash and cash equivalents and restricted cash	536,182	352,354	(494,565)
Change in cash, cash equivalents, and restricted cash	12,086,553	54,558,915	2,143,796
Cash, cash equivalents, and restricted cash beginning of period	68,571,123	14,012,208	11,868,412
Cash, cash equivalents, and restricted cash end of period	80,657,676	68,571,123	14,012,208
Supplemental disclosures and non-cash transactions:
Cash paid for interest	32,834,244	35,942,900	17,976,018
Supplemental disclosure of noncash activities:
Issuance of shares pursuant to distribution reinvestment plan	15,954,081	16,046,534	16,057,113
Distributions payable	6,650,317	5,159,105	2,890,395
Redemption of common stock included in accounts payable and accrued liabilities	732,725	431,326	1,291,520
Deposit applied to the purchase of real estate	200,000	1,000,000	0
Real estate and construction in process included in accounts payable and accrued liabilities	248,845	1,420,217	617,667
Foreign currency contracts, interest rate swaps, and interest rate cap contract in accounts payable and accrued liabilities and other assets	4,862,285	3,575,580	2,774,111
Debt assumed in SSGT Mergers	0	5,038,435	0
Net liabilities assumed in SSGT Mergers	0	1,712,596	0
Debt assumed in the Self Administration Transaction	0	19,219,126	0
Contingent earnout consideration issued in the Self Administration Transaction	0	30,900,000	0
Deferred tax liabilities related to the Self Administration Transaction	0	7,415,654	0
Accounts payable and other accrued liabilities assumed in the Self Administration Transaction	0	722,286	0
Transfer of other assets to debt issuance costs	0	1,075,000	0
Issuance of common stock in exchange for units in our Operating Partnership	0	0	4,254,009
SSGT Mergers
Supplemental disclosure of noncash activities:
Issuance of units in our Operating Partnership	0	4,217,399	0
Self Administration Transaction
Supplemental disclosure of noncash activities:
Issuance of units in our Operating Partnership	0	63,643,000	0
Limited Partner
Supplemental disclosure of noncash activities:
Issuance of units in our Operating Partnership	0	18,800,000	0
Preferred Stock
Cash flows from investing activities:
Purchase of SSGT II Preferred Units	$ (32,500,000)	$ 0	$ 0

Organization

Organization	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Organization	Note 1. Organization SmartStop Self Storage REIT, Inc., a Maryland corporation (the “Company”), is a self-managed and fully-integrated self storage real estate investment trust (“REIT”), formed on January 8, 2013 under the Maryland General Corporation Law. Our year-end is December 31. As used in this report, “we,” “us,” “our,” and “Company” refer to SmartStop Self Storage REIT, Inc. and each of our subsidiaries. We acquire, own and operate self storage facilities—including facilities owned by us as well as those owned by the entities sponsored by us. As of December 31, 2020, we owned 112 self storage facilities located in 17 states (Alabama, Arizona, California, Colorado, Florida, Illinois, Indiana, Maryland, Massachusetts, Michigan, New Jersey, Nevada, North Carolina, Ohio, South Carolina, Texas and Washington) and the Greater Toronto Area of Ontario, Canada. As discussed herein, we, through our subsidiaries, also serve as the sponsor of Strategic Storage Trust IV, Inc. (“SST IV”), a public non-traded REIT, and Strategic Storage Growth Trust II, Inc. (“SSGT II”) (collectively with SST IV, the “Managed REITs”), a private non-traded REIT, and operate the properties owned by the Managed REITs, consisting of 37 properties and approximately 30,000 units and 3.1 million rentable square feet. Through our Managed REIT Platform (as defined below), we have the internal capability to originate, structure, and manage additional investment products. Significant Acquisitions and Transactions SST IV Merger On March 17, 2021, we closed on our merger with SST IV (the “SST IV Merger”). As a result, we acquired all of the real estate owned by SST IV, consisting of (i) 24 self storage facilities located in 9 states comprising approximately 18,000 self storage units and approximately 2.0 million net rentable square feet, and (ii) SST IV’s 50% equity interest in six unconsolidated real estate ventures located in the Greater Toronto Area of Ontario, Canada (the “JV Properties”). The JV Properties consist of three operating self storage properties and three parcels of land being developed into self storage facilities, with subsidiaries of SmartCentres Real Estate Investment Trust, an unaffiliated third party (“SmartCentres”). Additionally, we obtained the rights to acquire, upon its completion, a self storage property that is being developed in San Gabriel, California. See Note 16 - Subsequent Events, for additional information related to the SST IV Merger. New Credit Facility On March 17, 2021, we, through SmartStop OP, L.P. (our “Operating Partnership”), entered into a credit facility with KeyBank, National Association as administrative agent, with an initial aggregate amount of $500 million (the “Credit Facility”), which consists of a $250 million revolving credit facility and a $250 million term loan. The revolving credit facility has an initial term of three years, with a one year extension option, and the term loan has a term of five years, with no extension option. Borrowings under the new Credit Facility may be in either U.S. dollars or Canadian dollars. Upon the closing of the Credit Facility, we immediately made the following drawdowns: (i) under the Credit Facility revolver (A) $199 million in USD borrowings and (B) CAD$2.5 million in Canadian dollar borrowings (approximately $2 million equivalent in U.S. dollars), and (ii) under the Credit Facility term loan (A) $150 million in US borrowings and (B) CAD$124.7 million in Canadian dollar borrowings (approximately $100 million equivalent in U.S. dollars), for an aggregate amount of approximately $451 million. We used the proceeds primarily to pay off certain existing indebtedness as well as indebtedness of SST IV in connection with the SST IV Merger. See Note 16 - Subsequent Events, for additional information related to the new Credit Facility. Self Administration Transaction On June 28, 2019, we acquired the self storage advisory, asset management and property management businesses and certain joint venture interests (the “Self Storage Platform”) of SmartStop Asset Management, LLC, our former sponsor (“SAM”), along with certain other assets of SAM (collectively, the “Self Administration Transaction”). As a result of the Self Administration Transaction, w e became self-managed and the sponsor of SST IV and SSGT II . W e originate, structure and manage investment products (the “Managed REIT Platform”) through SmartStop REIT Advisors, LLC (“SRA”), our indirect subsidiary. See Note 4, Self Administration Transaction and Note 11 – Related Party Transactions , for additional information . SSGT Mergers On October 1, 2018, we, our Operating Partnership, and SST II Growth Acquisition, LLC, our wholly-owned subsidiary (“SSGT Merger Sub”), entered into an Agreement and Plan of Merger (the “SSGT Merger Agreement”) with Strategic Storage Growth Trust, Inc. (“SSGT”), a non-traded REIT then sponsored by SAM, and SS Growth Operating Partnership, L.P. (“SSGT OP”). Pursuant to the terms and conditions set forth in the SSGT Merger Agreement, on January 24, 2019: (i) we acquired SSGT by way of a merger of SSGT with and into SSGT Merger Sub, with SSGT Merger Sub being the surviving entity (the “SSGT REIT Merger”); and (ii) immediately after the SSGT REIT Merger, SSGT OP merged with and into our Operating Partnership, with the Operating Partnership continuing as the surviving entity and remaining a subsidiary of the Company (the “SSGT Partnership Merger” and, together with the SSGT REIT Merger, the “SSGT Mergers”). SSGT was a REIT with stated investment objectives to acquire opportunistic self storage properties, including development and lease-up properties. See Note 3, Real Estate Facilities—Merger with Strategic Storage Growth Trust, Inc., for additional information related to the SSGT Mergers. Equity The Company was formed on January 8, 2013, under the Maryland General Corporation Law. We commenced our initial public offering in January 2014, in which we offered a maximum of $1.0 billion in common shares for sale to the public (the “Primary Offering”) and $95.0 million in common shares for sale pursuant to our distribution reinvestment plan (collectively, the “Offering”). At the termination of our offering in January 2017, we had sold approximately 48 million shares of Class A common stock (“Class A Shares”) and approximately 7 million shares of Class T common stock (“Class T Shares”) for approximately $493 million and $73 million respectively. In November 2016, we filed with the SEC a Registration Statement on Form S-3, which registered up to an additional $100.9 million in shares under our distribution reinvestment plan (our “DRP Offering”). The DRP Offering may be terminated at any time upon 10 days’ prior written notice to stockholders. As of December 31, 2020, we had sold approximately 5.3 million Class A Shares and approximately 0.8 million Class T Shares for approximately $55.5 million and $8.5 million, respectively, in our DRP Offering. On October 29, 2019 (the “Commitment Date”), we entered into a preferred stock purchase agreement (the “Purchase Agreement”) with Extra Space Storage LP (the “Investor”), a subsidiary of Extra Space Storage Inc. (NYSE: EXR), pursuant to which the Investor committed to purchase up to $200 million in shares (the aggregate shares to be purchased, the “Preferred Shares”) of our new Series A Convertible Preferred Stock (the “Series A Convertible Preferred Stock”), in one or more closings The shares of Series A Convertible Preferred Stock rank senior to all other shares of our capital stock, including our common stock, with respect to rights to receive dividends and to participate in distributions or payments upon any voluntary or involuntary liquidation, dissolution or winding up of the Company. Dividends payable on each share of Series A Convertible Preferred Stock will initially be equal to a rate of 6.25% per annum. If the Series A Convertible Preferred Stock has not been redeemed on or prior to the fifth anniversary date of the Initial Closing, the dividend rate will increase an additional 0.75% per annum each year thereafter to a maximum of 9.0% per annum until the tenth anniversary of the Initial Closing, at which time the dividend rate shall increase 0.75% per annum each year thereafter until the Series A Convertible Preferred Stock is redeemed or repurchased in full. See Note 8, Preferred Equity, for additional information On April 20, 2020, our board of directors, upon recommendation of our Nominating and Corporate Governance Committee, approved an estimated value per share of our common stock of $10.40 for our Class A Shares and Class T Shares based on the estimated value of our assets less the estimated value of our liabilities, or net asset value, divided by the number of shares outstanding on a fully diluted basis, calculated as of December 31, 2019. As a result of the calculation of our estimated value per share, beginning in May 2020, shares sold pursuant to our DRP Offering are being sold at the estimated value per share of $10.40 for both Class A Shares and Class T Shares. Prior to the termination of our Primary Offering, Select Capital Corporation, a California corporation (our “Former Dealer Manager”), was responsible for marketing our shares offered pursuant to our Primary Offering. SAM indirectly owns a 15% non-voting equity interest in our Former Dealer Manager. Now that our Primary Offering has terminated, our Former Dealer Manager no longer provides such services for us. However, we pay our Former Dealer Manager an ongoing stockholder servicing fee with respect to the Class T Shares sold. Please see Note 11 – Related Party Transactions – Former Dealer Manager Agreement. Other Corporate History Our Operating Partnership was formed on January 9, 2013. During 2013, Strategic Storage Advisor II, LLC, our former external advisor (“Former External Advisor”) purchased limited partnership interests in our Operating Partnership for $200,000 and on August 2, 2013, we contributed the initial $1,000 capital contribution we received to our Operating Partnership in exchange for the general partner interest. See Note 4, Self Administration Transaction, for additional information. As we accepted subscriptions for shares of our common stock, we transferred all of the net Offering proceeds to our Operating Partnership as capital contributions in exchange for additional units of interest in our Operating Partnership. However, we were deemed to have made capital contributions in the amount of gross proceeds received from investors, and our Operating Partnership was deemed to have simultaneously paid the sales commissions and other costs associated with the Offering. In addition, our Operating Partnership is structured to make distributions with respect to limited partnership units that are equivalent to the distributions made to holders of common stock. Finally, a limited partner in our Operating Partnership may later exchange his or her limited partnership units in our Operating Partnership for shares of our common stock at any time after one year following the date of issuance of their limited partnership units, subject to certain restrictions outlined in our Operating Partnership’s limited partnership agreement. Our Operating Partnership owns, directly or indirectly through one or more special purpose entities, all of the self storage properties that we own. As of December 31, 2020, we owned approximately 86.5% of the common units of limited partnership interests of our Operating Partnership. The remaining approximately 13.5% of the common units are owned by certain members of our executive management team or indirectly by SAM and affiliates of our Former Dealer Manager. As the sole general partner of our Operating Partnership, we have the exclusive power to manage and conduct the business of our Operating Partnership. We conduct certain activities through SmartStop TRS, Inc. (our “TRS”), or other taxable REIT subsidiaries which are directly or indirectly wholly-owned subsidiaries of our Operating Partnership. COVID-19 Our rental revenue and operating results depend significantly on the demand for self storage space. Since the beginning of the COVID-19 pandemic in late March 2020, our operations have been affected by COVID-19 in various ways, including but not limited to, national and local jurisdictions issuing orders causing temporary restrictions on our business in certain markets, temporary shutdowns of certain of our facilities, customer behavior and their comfort levels visiting our facilities, as well as the broader economic impacts of COVID-19. The financial impact associated with these items were most significant in the second quarter of 2020, with customer demand for self storage resuming at or above normalized levels during the second half of 2020. Future governmental orders or broad economic weakness could adversely impact our business, financial condition, liquidity and results of operations, however, the extent and duration to which our operations will be impacted is highly uncertain and cannot be predicted

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC. Unaudited Information The square footage, unit count, and occupancy percentage data and disclosures included in these notes to the consolidated financial statements are unaudited. Principles of Consolidation Our financial statements, and the financial statements of our Operating Partnership, including its wholly-owned subsidiaries, are consolidated in the accompanying consolidated financial statements. The portion of these entities not wholly-owned by us is presented as noncontrolling interests. All significant intercompany accounts and transactions have been eliminated in consolidation. Consolidation Considerations Current accounting guidance provides a framework for identifying a variable interest entity (“VIE”) and determining when a company should include the assets, liabilities, noncontrolling interests, and results of activities of a VIE in its consolidated financial statements. In general, a VIE is an entity or other legal structure used to conduct activities or hold assets that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. Generally, a VIE should be consolidated if a party with an ownership, contractual, or other financial interest in the VIE (a variable interest holder) has the power to direct the VIE’s most significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could be significant to the VIE. A variable interest holder that consolidates the VIE is called the primary beneficiary. Upon consolidation, the primary beneficiary generally must initially record all of the VIE’s assets, liabilities, and noncontrolling interest at fair value and subsequently account for the VIE as if it were consolidated based on majority voting interest. Our Operating Partnership is deemed to be a VIE and is consolidated by the Company as the primary beneficiary. As of December 31, 2020, and 2019, we were not a party to any other contracts/interests that would be deemed to be variable interest in VIEs other than our Tenant Programs joint ventures with SST IV and SSGT II which were acquired in the Self Administration Transaction, which are consolidated. Equity Investments Under the equity method, our investments will be stated at cost and adjusted for our share of net earnings or losses and reduced by distributions and impairments, as applicable. Equity in earnings will generally be recognized based on our ownership interest in the earnings of each of the unconsolidated investments. Investments in and Advances to Managed REITs As of December 31, 2020, and 2019, we owned equity investments with a carrying value of approximately $15.1 million, and $5.8 million, respectively, in the Managed REITs; such amounts are included in Investments in and advances to Managed REITs within our Consolidated Balance Sheets. We account for these investments using the equity method of accounting as we have the ability to exercise significant influence, but not control, over the Managed REITs’ operating and financial policies through our advisory and property management agreements with the respective Managed REITs. The equity method of accounting requires the investment to be initially recorded at cost and subsequently adjusted for our share of equity in the respective Managed REIT’s earnings and reduced by distributions. Also included in Investments in and advances to Managed REITs as of December 31 , 2020 are receivables from the Managed REITs of approximately $ 0.5 million . As of December 31, 2019, receivables from the Managed REITs approximated $ 0.3 million . For additional discussion, see Note 11 – Related Party Transactions . Noncontrolling Interests in Consolidated Entities We account for the noncontrolling interests in our Operating Partnership and the noncontrolling interests in our Tenant Programs joint ventures with SST IV and SSGT II in accordance with the related accounting guidance. Due to our control through our general partnership interest in our Operating Partnership and the limited rights of the limited partners, our Operating Partnership, including its wholly-owned subsidiaries, are consolidated with the Company and the limited partner interests are reflected as a noncontrolling interests in the accompanying consolidated balance sheets. We also consolidate our interests in the SST IV and SSGT II Tenant Programs and present the minority interests as noncontrolling interests in the accompanying consolidated balance sheets. The noncontrolling interests shall be attributed their share of income and losses, even if that attribution results in a deficit noncontrolling interests balance. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management will adjust such estimates when facts and circumstances dictate. Actual results could materially differ from those estimates. The most significant estimates made include the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed at relative fair value, the determination if certain entities should be consolidated, the evaluation of potential impairment of indefinite and long-lived assets and goodwill, and the estimated useful lives of real estate assets and intangibles. Cash and Cash Equivalents We consider all short-term, highly liquid investments that are readily convertible to cash with a maturity of three months or less at the time of purchase to be cash equivalents. We may maintain cash and cash equivalents in financial institutions in excess of insured limits, but believe this risk will be mitigated by only investing in or through major financial institutions. Restricted Cash Restricted cash consists primarily of impound reserve accounts for property taxes, insurance and capital improvements in connection with the requirements of certain of our loan agreements. Real Estate Purchase Price Allocation We account for acquisitions in accordance with GAAP which requires that we allocate the purchase price of a property to the tangible and intangible assets acquired and the liabilities assumed based on their relative fair values as of the date of acquisition. This guidance requires us to make significant estimates and assumptions, including fair value estimates, which requires the use of significant unobservable inputs as of the acquisition date. The value of the tangible assets, consisting of land and buildings, is determined as if vacant . Substantially all of the leases in place at acquired properties are at market rates, as the majority of the leases are month-to-month contracts. We also consider whether in-place, market leases represent an intangible asset. We recorded none , approximately $ 13.6 million , and none in intangible assets to recognize the value of in-place leases related to our acquisitions during the year s ended December 31, 2020, 2019 and 2018 respectively. We do not expect, nor to date have we recorded, intangible assets for the value of customer relationships because we expect we will not have concentrations of significant customers and the average customer turnover will be fairly frequent . Allocation of purchase price to acquisitions of portfolios of facilities are allocated to the individual facilities based upon an income approach or a cash flow analysis using appropriate risk adjusted capitalization rates which take into account the relative size, age, and location of the individual facility along with current and projected occupancy and rental rate levels or appraised values, if available. Acquisitions that do not meet the definition of a business, as defined under current GAAP, are accounted for as asset acquisitions. During the years ended December 31, 2020 and 2019, our property acquisitions did not meet the definition of a business because substantially all of the fair value was concentrated in a single identifiable asset or group of similar identifiable assets (i.e. land, buildings, and related intangible assets) or because the acquisitions did not include a substantive process in the form of an acquired workforce or an acquired contract that cannot be replaced without significant cost, effort or delay. As a result, once an acquisition is deemed probable, transaction costs are capitalized rather than expensed. During the years ended December 31, 2020, 2019, and 2018 we expensed approximately $1.4 Purchase Price Allocation for the Acquisition of a Business Should the initial accounting for an acquisition that meets the definition of a business be incomplete by the end of a reporting period that falls within the measurement period, we report provisional amounts in our financial statements. During the measurement period, we may adjust the provisional amounts recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and we record those adjustments to our financial statements. We apply any measurement period adjustments in the period in which the provisional amounts are finalized. As discussed in Note 4, the Self Administration Transaction was an acquisition of a business. Evaluation of Possible Impairment of Real Property Assets Management monitors events and changes in circumstances that could indicate that the carrying amounts of our real property assets may not be recoverable. When indicators of potential impairment are present that indicate that the carrying amounts of the assets may not be recoverable, we will assess the recoverability of the assets by determining whether the carrying value of the real property assets will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we will adjust the value of the real property assets to the fair value and recognize an impairment loss. For the years ended December 31, 2020, 2019, and 2018, no impairment losses were recognized. Goodwill Valuation We initially recorded goodwill of approximately $78.4 million as a result of the Self Administration Transaction. Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible assets and other intangible assets acquired. Goodwill is allocated to various reporting units, as applicable, and is not amortized. We perform an annual impairment test for goodwill, and between annual tests, we evaluate the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying amount of goodwill may not be fully recoverable. In our impairment test of goodwill, we perform a quantitative analysis to compare the fair value of each reporting unit to its respective carrying amount. If the carrying amount of goodwill exceeds its fair value, an impairment charge will be recognized. See Note 5—Self Administration Transaction - Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information. Trademarks In connection with the Self Administration Transaction, we initially recorded $19.8 million associated with the two primary trademarks acquired. Prior thereto we had no amounts recorded related to trademarks. Trademarks are based on the value of our brands. Trademarks are valued using the relief from royalty method, which presumes that without ownership of such trademarks, we would have to make a stream of payments to a brand or franchise owner in return for the right to use their name. By virtue of this asset, we avoid any such payments and record the related intangible fair value of our ownership of the brand name. We used the following significant projections and assumptions to determine fair value under the relief from royalty method: revenues; royalty rate; tax expense; terminal growth rate; and discount rate. For the SmartStop ® ® The total estimated future amortization expense of the “Strategic Storage®” trademark asset for the years ending December 31, 2021, 2022, 2023, 2024, and thereafter is approximately $140,000, $140,000, $140,000, $70,000, and none, respectively. We qualitatively evaluate whether any triggering events or changes in circumstances have occurred subsequent to our annual impairment test that would indicate an impairment condition may exist. If any change in circumstance or triggering event occurs, and results in a significant impact to our revenue and profitability projections, or any significant assumption in our valuation methods is adversely impacted, the impact could result in a material impairment charge in the future. See Note 5 - Self Administration Transaction - Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information. Revenue Recognition Self Storage Operations Management believes that all of our leases are operating leases. Rental income is recognized in accordance with the terms of the leases, which generally are month-to-month. Revenues from any long-term operating leases are recognized on a straight-line basis over the term of the lease. The excess of rents received over amounts contractually due pursuant to the underlying leases is included in accounts payable and accrued liabilities in our consolidated balance sheets, and contractually due but unpaid rent is included in other assets. Managed REIT Platform We earn property management and asset management revenue, pursuant to the respective property management and advisory agreement contracts, in connection with providing services to the Managed REITs. We have determined under ASC 606 – Revenue from Contracts with Customers (“ASC 606”), that the performance obligation for the property management services and asset management services are satisfied as the services are rendered. While we are compensated for our services on a monthly basis, these services represent a series of distinct daily services in accordance with ASC 606. Such revenue is recorded in the Managed REIT Platform revenue line within our consolidated statements of operations. The Managed REITs’ advisory agreements also provide for reimbursement to us of our direct and indirect costs of providing administrative and management services to the Managed REITs. These reimbursements include costs incurred in relation to organization and offering services provided to the Managed REITs and the reimbursement of salaries, bonuses, and other expenses related to benefits paid to our employees while performing services for the Managed REITs. T he Managed REITs’ property management agreements also provide r eimbursement to us for the property manager’s costs of managing the properties. Reimbursable costs include wages and salaries and other expenses that arise in operating, managing and maintaining the Managed REITs’ properties. Under ASC 606, direct reimbursement of such costs does not represent a separate performance obligation from our obligation to perform property management and asset management services. The reimbursement income is considered variable consideration, and is recognized as the costs are incurred, subject to limitations on the Managed REIT Platform’s ability to incur offering costs or limitations imposed by the advisory agreements. We have elected to separately record such revenue in the Reimbursable costs from Managed REITs line within our consolidated statements of operations. Additionally, we earn revenue in connection with our Tenant Programs joint ventures with our Managed REITs. We also earn development and construction management revenue from services we provide in connection with the project design, coordination and oversite of development and certain capital improvement projects undertaken by the Managed REITs. We recognize such revenue in the Managed REIT Platform revenue line within our consolidated statements of operations. See Note 11 – Related Party Transactions, for additional information regarding revenue generated from our Managed REIT Platform. Allowance for Doubtful Accounts Tenant accounts receivable is reported net of an allowance for doubtful accounts. Management records this general reserve estimate based upon a review of the current status of accounts receivable. It is reasonably possible that management’s estimate of the allowance will change in the future. Real Estate Facilities We capitalize costs incurred to develop, construct, renovate and improve properties, including interest and property taxes incurred during the construction period. The construction period begins when expenditures for the real estate assets have been made and activities that are necessary to prepare the asset for its intended use are in progress. The construction period ends when the asset is substantially complete and ready for its intended use. Depreciation of Real Property Assets Our management is required to make subjective assessments as to the useful lives of our depreciable assets. We consider the period of future benefit of the asset to determine the appropriate useful lives. Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives Description Standard Depreciable Life Land Not Depreciated Buildings 30-40 years Site Improvements 7-10 years Depreciation of Personal Property Assets Personal property assets consist primarily of furniture, fixtures and equipment and are depreciated on a straight-line basis over the estimated useful lives, generally ranging from 3 to 5 years, and are included in other assets on our consolidated balance sheets. Intangible Assets We have allocated a portion of our real estate purchase price to in-place lease intangibles. We amortize in-place lease intangibles on a straight-line basis over the estimated future benefit period. As of December 31, 2020, the gross amount allocated to in-place lease intangibles was approximately $47.3 million and accumulated amortization of in-place lease intangibles totaled approximately $45.7 million. As of December 31, 2019, the gross amounts allocated to in-place lease intangibles were approximately $46.8 million and accumulated amortization of in-place lease intangibles totaled approximately $40.4 million. The total estimated future amortization expense of intangible assets related to our self storage properties for the years ending December 31, 2021, 2022, 2023, 2024, 2025 and thereafter is approximately $0.1 million, $0.1 million, $0.1 million, $0.1 million, and $1.0 million respectively. In connection with the Self Administration Transaction, we allocated a portion of the consideration to the contracts that we acquired related to the Managed REITs and the customer relationships related to the Tenant Programs joint ventures. For these intangibles, we are amortizing such amounts on a straight-line basis over the estimated benefit period of the contracts and customer relationships. As of December 31, 2020, the gross amount of the intangible assets related to the Managed REITs contracts and the customer relationships related to the Tenant Programs joint ventures was approximately $18.1 million and the accumulated amortization was approximately $7.3 million. As of December 31, 2019, the gross amount of the intangibles related to the Managed REITs contracts and the customer relationships related to the Tenant Programs joint ventures was approximately $26.5 million and accumulated amortization of those intangibles totaled approximately $2.9 million The total estimated future amortization expense for such intangible assets for the years ending December 31, 2021, 2022, 2023, 2024 and 2025 is approximately $2.9 million, $2.9 million, $2.9 million, $1.8 million and $0.3 million, respectively. We evaluate whether any triggering events or changes in circumstances have occurred subsequent to our annual impairment test that would indicate an impairment condition may exist. If any change in circumstance or triggering event occurs, and results in a significant impact to our revenue and profitability projections, or any significant assumption in our valuations methods is adversely impacted, the impact could result in a material impairment charge in the future. See Note 5 – Self Administration Transaction – Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information. Debt Issuance Costs The net carrying value of costs incurred in connection with obtaining non revolving debt are presented on the balance sheet as a deduction from debt (see Note 7). Debt issuance costs are amortized on a straight-line basis over the term of the related loan, which is not materially different than the effective interest method . As of December 31 , 2020 , the gross amount allocated to debt issuance costs related to non-revolving debt totaled approximately $ 12.0 million and accumulated amortization of debt issuance costs related to non-revolving debt totaled approximately $ 7.9 million . As of December 31 , 201 9, the gross amount allocated to debt issuance costs related to non-revolving debt totaled approximately $ 11.9 million and accumulated amortization of debt issuance costs related to non-revolving debt totaled approximately $ 4.3 million . Organizational and Offering Costs We pay our Former Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. We will cease paying the stockholder servicing fee with respect to the Class T Shares sold in the Primary Offering at the earlier of (i) the date we list our shares on a national securities exchange, merge or consolidate with or into another entity, or sell or dispose of all or substantially all of our assets; (ii) the date at which the aggregate underwriting compensation from all sources equals 10% Foreign Currency Translation For non-U.S. functional currency operations, assets and liabilities are translated to U.S. dollars at current exchange rates. Revenues and expenses are translated at the average rates for the period. All adjustments related to amounts classified as long term net investments are recorded in accumulated other comprehensive income (loss) as a separate component of equity. Transactions denominated in a currency other than the functional currency of the related operation are recorded at rates of exchange in effect at the date of the transaction. Changes in investments not classified as long term are recorded in other income (expense) and represented a gain of approximately $0.6 million and approximately $0.9 million for the years ended December 31, 2020 and 2019, respectively. Redeemable Common Stock We adopted a share redemption program (“SRP”) that enables stockholders to sell their shares to us in limited circumstances. We record amounts that are redeemable under the SRP as redeemable common stock in the accompanying consolidated balance sheets since the shares are redeemable at the option of the holder and therefore their redemption is outside our control. The maximum amount redeemable under our SRP is limited to the number of shares we can repurchase with the amount of the net proceeds from the sale of shares under the distribution reinvestment plan. However, accounting guidance states that determinable amounts that can become redeemable should be presented as redeemable when such amount is known. Therefore, the net proceeds from the distribution reinvestment plan are considered to be temporary equity and are presented as redeemable common stock in the accompanying consolidated balance sheets. In addition, current accounting guidance requires, among other things, that financial instruments that represent a mandatory obligation of us to repurchase shares be classified as liabilities and reported at settlement value. When we determine we have a mandatory obligation to repurchase shares under the SRP, we reclassify such obligations from temporary equity to a liability based upon their respective settlement values. On August 26, 2019, our board of directors approved a partial suspension of our SRP, effective as of September 27, 2019, so that common shares were redeemable at the option of the holder only in connection with (i) death or disability of a stockholder, (ii) confinement to a long-term care facility, or (iii) other exigent circumstances . In order to preserve cash in light of the uncertainty relating to COVID-19 and its potential impact on our overall financial results, o n March 30, 2020, our board of directors approved the complete suspension of our SRP, effective on April 29, 2020. Due to the complete suspension, we were unable to honor redemption requests made during the quarter ended March 31, 2020 or the quarter ended June 30, 2020. On August 20, 2020, our board of directors determined that it would be in our best interests to partially reinstate the SRP, effective as of September 23, 2020. Currently, our redemption program remains suspended other than for redemptions sought in connection with a stockholder’s death, qualifying disability, confinement to a long-term care facility or other exigent circumstances. For the year ended December 31, 2020, we received redemption requests totaling approximately $2.0 million (approximately 0.2 million shares), approximately $1.3 million of which were fulfilled during the year ended December 31, 2020, with the remaining approximately $0.7 million included in accounts payable and accrued liabilities as of December 31, 2020 and fulfilled in January 2021. For the year ended December 31, 2019, we received redemption requests totaling approximately $4.9 million (approximately 0.5 million shares), approximately $4.5 million of which were fulfilled during the year ended December 31, 2019, with the remaining approximately $0.4 million included in accounts payable and accrued liabilities as of December 31, 2019 and fulfilled in January 2020. For the year ended December 31, 2018, we received redemption requests totaling approximately $8.3 million (approximately 0.9 million shares), approximately $7.0 million of which were fulfilled during the year ended December 31, 2018, with the remaining approximately $1.3 million included in accounts payable and accrued liabilities as of December 31, 2018 and fulfilled in January 2019. Accounting for Equity Awards We issue equity based awards in two forms: (1) restricted stock awards consisting of shares of our common stock and (2) long-term incentive plan units of our Operating Partnership (“LTIP Units”), both of which may be issued subject to either For time based awards granted which contain a graded vesting schedule, compensation cost is recognized as an expense on a straight-line basis over the requisite service period as if the award was, in substance, a single award. For performance based awards, compensation cost is recognized over the requisite service period if and when we determine the performance condition is probable of being achieved. Fair Value Measurements Under GAAP, we are required to measure certain financial instruments at fair value on a recurring basis. In addition, we are required to measure other financial instruments and balances at fair value on a non-recurring basis. Fair value is defined by the accounting standard for fair value measurements and disclosures as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels. The following summarizes the three levels of inputs and hierarchy of fair value we use when measuring fair value: • Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access; • Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as interest rates and yield curves that are observable at commonly quoted intervals; and • Level 3 inputs are unobservable inputs for the assets or liabilities that are typically based on an entity’s own assumptions as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the fair value measurement will fall within the lowest level that is significant to the fair value measurement in its entirety. The accounting guidance for fair value measurements and disclosures provides a framework for measuring fair value and establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In determining fair value, we will utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment will be necessary to interpret Level 2 and 3 inputs in determining fair value of our financial and non-financial assets and liabilities. Accordingly, there can be no assurance that the fair values we will present will be indicative of amounts that may ultimately be realized upon sale or other disposition of these assets . Financial and non-financial assets and liabilities measured at fair value on a non-recurring basis in our consolidated financial statements consist of real estate and related liabilities assumed related to our acquisitions along with the assets and liabilities described in Note 4 - Self Administration Transaction. The fair values of these assets and liabilities were determined as of the acquisition dates using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity. Additionally, certain such assets and liabilities are required to be fair valued periodically or valued pursuant to ongoing impairment analyses and have been valued subsequently utilizing the same techniques noted above. In general, we consider multiple valuation techniques when measuring fair values. However, in certain circumstances, a single valuation technique may be appropriate. All of the fair values of the assets and liabilities as of the acquisition dates were derived using Level 3 inputs. The carrying amounts of cash and cash equivalents, restricted cash, other assets, variable-rate debt, accounts payable and accrued liabilities, distributions payable and amounts due to affiliates approximate fair value. The table below summarizes our fixed rate notes payable at December 31, 2020 and 2019. The estimated fair value of financial instruments is subjective in nature and is dependent on a number of important assumptions, including discount rates and relevant comparable market information associated with each financial instrument. The fair value of the fixed rate notes payable was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. The use of different market assumptions and estimation methodologies may have a material effe

Real Estate Facilities

Real Estate Facilities	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Real Estate Facilities	Note 3. Real Estate Facilities The following summarizes the activity in real estate facilities during the years ended December 31, 2020 and 2019: Real estate facilities Balance at December 31, 2018 $ 820,296,026 Facilities acquired through merger with SSGT 334,139,296 Asset disposals (11,688,993 ) Corporate office acquired through Self Administration Transaction 6,500,000 Other facility acquisitions 10,430,942 Impact of foreign exchange rate changes 6,582,603 Improvements and additions 7,565,494 Balance at December 31, 2019 1,173,825,368 Impact of foreign exchange rate changes 4,147,798 Acquisitions, additions and other (1) 32,129,416 Balance at December 31, 2020 $ 1,210,102,582 Accumulated depreciation Balance at December 31, 2018 $ (54,264,685 ) Asset disposals 202,416 Depreciation expense (29,188,668 ) Impact of foreign exchange rate changes (441,554 ) Balance at December 31, 2019 (83,692,491 ) Depreciation expense (31,711,102 ) Impact of foreign exchange rate changes (499,452 ) Balance at December 31, 2020 $ (115,903,045 ) (1) Land Acquisition – Riverview, Florida On July 21, 2020, we purchased an undeveloped parcel of land adjacent to our existing Riverview, Florida self storage facility for $800,000, plus closing costs. We acquired the parcel from an unaffiliated third party and are in process of expanding our existing self storage facility on the newly acquired land; thereby adding approximately 170 units and approximately 25,000 rentable square feet Potential Acquisitions On June 2, 2020, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a plot of land (the “Etobicoke Property”) in the city of Toronto. On September 1, 2020, we executed a second purchase and sale agreement with the same seller for the acquisition of another plot of land (the “Scarborough Property”) in the city of Toronto. We intend on developing both the Etobicoke Property and the Scarborough Property into self storage facilities. The purchase price for the Etobicoke Property and the Scarborough Property are each approximately $2.2 million CAD, with adjustment factors to the purchase price based on the final surveys, plus closing costs There can be no assurances that we will complete these acquisitions. If we fail to acquire the Etobicoke Property or the Scarborough Property, in addition to the incurred acquisition costs, we may also forfeit earnest money deposits as a result. On November 18, 2020, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a property (the “Jane Street Property”) in the city of North York, Ontario. We intend on developing the Jane Street Property into a self storage facility. The purchase price for the Jane Street Property is approximately $8.5 million CAD, plus closing costs. There can be no assurance that we will complete the acquisition. If we fail to acquire the Jane Street Property, in addition to the incurred acquisition costs, we may also forfeit earnest money deposits as a result. On February 18, 2021, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a property (the “Oakville IQ Property”) in the city of Oakville, Ontario. The purchase price for the Oakville IQ Property is approximately $25.0 million CAD, plus closing costs. There can be no assurance that we will complete the acquisition. If we fail to acquire the Oakville IQ Property, in addition to the incurred acquisition costs, we may also forfeit earnest money as a result We may decide to enter into joint venture agreements with SmartCentres for some or all of the above mentioned Canadian properties currently under contract. On March 19, 2021, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a property that is being developed into a self storage facility located in the city of Henderson, Nevada (the “Henderson Property”). The purchase price for the Henderson Property is approximately $12.6 million, plus closing costs. There can be no assurance that we will complete the acquisition. If we fail to acquire the Henderson Property, in addition to the incurred acquisition costs, we may also forfeit earnest money as a result. On March 19, 2021, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a self storage property (the “Durango Property”) in the city of Las Vegas, Nevada. The purchase price for the Durango Property is approximately $8.0 million, plus closing costs. There can be no assurance that we will complete the acquisition. If we fail to acquire the Durango Property, in addition to the incurred acquisition costs, we may also forfeit earnest money as a result. On March 24, 2021, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of a property that is being developed into a self storage facility located in the city of Phoenix, Arizona (the “Baseline III Property”). The purchase price for the Baseline III Property is approximately $11.0 million, plus closing costs. There can be no assurance that we will complete the acquisition. If we fail to acquire the Baseline III Property, in addition to the incurred acquisition costs, we may also forfeit earnest money as a result. Merger with Strategic Storage Growth Trust, Inc. On January 24, 2019, we closed on the SSGT Mergers. At the effective time of the SSGT Mergers, each outstanding unit of partnership interest in SSGT OP was converted automatically into 1.127 units of partnership interest in our Operating Partnership, which resulted in approximately 396,000 The proceeds used to fund the SSGT Mergers and the repayment of approximately $141 million of our outstanding debt were funded by the SSGT Merger Financings, totaling approximately $500 million, as described in Note 7 – Debt. SSGT was a REIT with stated investment objectives to acquire opportunistic self storage properties, including development, and lease-up properties. Additionally, we obtained the rights to acquire a self storage facility which was under development located in Gilbert, Arizona that was previously under contract with SSGT and was acquired by us in July 2019. The following table reconciles the total consideration transferred during the SSGT Mergers: Fair value of consideration transferred: Cash $ 346,231,561 (1) Issuance of limited partnership units in our Operating Partnership to SS Growth Advisor, LLC 4,217,399 Total consideration transferred $ 350,448,960 (1) approximately $19 million of SSGT debt that was repaid at closing, approximately $5 million of other SSGT liabilities paid at closing, and approximately $1 million in transaction costs The following table summarizes the relative fair values of the assets acquired and liabilities assumed in the SSGT Mergers: Assets Acquired: Land $ 62,261,573 Buildings 255,743,767 Site improvements 16,133,956 Construction in process 5,370,773 Intangible assets 13,571,765 Cash and cash equivalents 692,965 Other assets 6,536,838 Total assets acquired $ 360,311,637 Liabilities assumed: Debt $ 5,038,435 Accounts payable and accrued liabilities 4,824,242 Total liabilities assumed $ 9,862,677 Total net assets acquired $ 350,448,960 Acquisition of Property Located in Gilbert, Arizona On January 24, 2019, we, by way of the SSGT Mergers, obtained the rights to acquire a property that was being developed into a self storage facility located in Gilbert, Arizona (the “Gilbert Property”). On July 11, 2019, upon issuance of the certificate of occupancy, we acquired the Gilbert Property for a purchase price of $10 million, plus closing costs and acquisition fees. The following table summarizes our purchase price allocation for our acquisitions during the year ended December 31, 2019 : Acquisition Acquisition Date Real Estate Assets Construction in Process (4) Intangibles Total (1) Debt Issued or Assumed 2019 Revenue (2) 2019 Property Operating Income (2)(3) SSGT Mergers (5) 1/24/2019 $ 334,139,296 $ 5,370,773 $ 13,571,765 $ 353,081,834 $ 193,376,846 $ 21,909,300 $ 12,032,555 Riggs Rd - Gilbert (6) 7/11/2019 10,430,942 - - 10,430,942 5,702,000 62,085 (44,459 ) 2019 Total $ 344,570,238 $ 5,370,773 $ 13,571,765 $ 363,512,776 $ 199,078,846 $ 21,971,385 $ 11,988,096 (1) The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs. (2) The operating results of the self storage properties acquired during the year ended December 31, 2019 were included in our consolidated statements of operations since their respective acquisition date (3) Property operating income excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses (4) Construction in process relates to the Torbarrie property in Toronto, Canada, which is a self storage property that was under construction at the time of acquisition. Such facility opened subsequently in 2020. (5) SSGT had stated investment objectives to acquire opportunistic self storage properties, including development, and lease-up properties. As a result, many of its properties were not physically and/or economically stabilized as of the date of the SSGT Mergers (6) The Gilbert Property was acquired with 0% occupancy as of the acquisition date

Self Administration Transaction

Self Administration Transaction	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Self Administration Transaction	Note 4. Self Administration Transaction Overview On June 28, 2019, we, our Operating Partnership and our TRS entered into a series of transactions, agreements, and amendments to our existing agreements and arrangements with our then-sponsor SAM and SmartStop OP Holdings, LLC (“SS OP Holdings”), a subsidiary of SAM, pursuant to which, effective June 28, 2019, we acquired the self storage advisory, asset management and property management businesses and certain joint venture interests of SAM, along with certain other assets of SAM. As a result of the Self Administration Transaction, Agreements Contribution Agreement On June 28, 2019, we along with our Operating Partnership, as contributee, and SAM and SS OP Holdings, as contributor, entered into a Contribution Agreement (the “Contribution Agreement”) whereby the Operating Partnership acquired the Self Storage Platform and certain other assets, including (a) SAM’s, or its subsidiaries’, 100% membership interests in our Former External Advisor and Former External Property Managers, the advisor and property manager for SST IV, the advisor and property manager for SSGT II, entities related to the Tenant Programs joint ventures, and certain entities related to SAM’s self storage business in Canada ; (b) all equipment, furnishings, fixtures and computer equipment as set forth in the Contribution Agreement; (c) certain personal property as set forth in the Contribution Agreement; (d) all intellectual property, goodwill, licenses and sublicenses granted and obtained with respect thereto (including all rights to the “SmartStop®” brand and “Strategic Storage®” related trademarks); (e) SAM’s processes, practices, procedures and workforce related to the self storage business (then consisting of a total of approximately 350 on-site self storage employees, regional and district managers, other personnel and the then current executive management team of the Company), and (f) certain other assets as set forth in the Contribution Agreement, in exchange for $769,126 in cash, and 8,698,956 Class A-1 limited partnership units of the Operating Partnership (“Class A-1 Units”) and 3,283,302 Class A-2 limited partnership units of the Operating Partnership (“Class A-2 Units”). Third Amended and Restated Limited Partnership Agreement and Redemption of Limited Partner Interest Agreement On June 28, 2019, we entered into the Third Amended and Restated Limited Partnership Agreement of the Operating Partnership (the “Operating Partnership Agreement”), which amended and superseded the Second Amended and Restated Limited Partnership Agreement (the “Former OP Agreement”), and a Redemption of Limited Partner Interest Agreement (the “Redemption of Limited Partner Interest Agreement”) with the Former External Advisor and the Operating Partnership, pursuant to which the Operating Partnership redeemed all of the limited partnership interests held by the Former External Advisor in the Operating Partnership. As a result of the Redemption of Limited Partner Interest Agreement and the Self Administration Transaction, the Former External Advisor’s parent entity, SAM and its affiliates no longer hold either their previously existing 20,000 limited partnership units or their special limited partnership interest in the Operating Partnership; however, SAM received cash of $ 200,000 and also now holds Class A-1 Units and Class A-2 Units in the Operating Partnership, as further described below. In addition, the revised Operating Partnership Agreement created two new classes of units issued to SS OP Holdings in connection with the Self Administration Transaction: Class A-1 Units and Class A-2 Units. T he Class A-1 Units are subject to the general restrictions on transfer contained in the Operating Partnership Agreement. In addition, until June 28, 2021 (the “Lock-Up Expiration”), the Class A-1 Units may not be sold, pledged, or otherwise transferred or encumbered except in certain limited circumstances set forth in the Contribution Agreement. The Class A-1 Units are otherwise entitled to all rights and duties of the Class A limited partnership units in the Operating Partnership, including cash distributions and the allocation of any profits or losses in the Operating Partnership. The Class A-2 Units are not entitled to cash distributions or the allocation of any profits or losses in the Operating Partnership until the Class A-2 Units are converted into Class A-1 Units. The conversion features of the Class A-2 Units are as follows: (A) the first time the aggregate incremental assets under management (“AUM”) (as defined in the Operating Partnership Agreement) of the Operating Partnership equals or exceeds one-third one-third Membership Interest Purchase Agreement – Ladera Office On June 28, 2019, immediately following the Self Administration Transaction, SAM and its then wholly-owned subsidiary, 10 Terrace Rd, LLC (“10 Terrace Rd”), and SmartStop Storage Advisors, LLC (“SSA”), our indirect subsidiary, entered into a Membership Interest Purchase Agreement (the “Membership Interest Purchase Agreement”), pursuant to which SSA purchased 100% of the membership interests in 10 Terrace Rd for $6.5 million, payable through the assumption of existing debt in the amount of approximately $4.2 million, and cash in the amount of approximately $2.3 million. 10 Terrace Rd is the owner of an office condominium located at 10 Terrace Rd., Ladera Ranch, California (the “Ladera Office”) which, as a result of the Membership Interest Purchase Agreement, we now indirectly own. The Ladera Office houses our corporate headquarters. Fair Value of Consideration Transferred We accounted for the Contribution Agreement and Membership Interest Purchase Agreement discussed above as a business combination under the acquisition method of accounting. During the year ended December 31, 2019, we incurred approximately $1.6 million for legal fees and fees and expenses of our other professional and financial advisors related to the Self Administration Transaction, which are included in the self administration transaction expenses line-item in the accompanying consolidated statements of operations. The estimated fair value of the consideration transferred totaled approximately $111.3 million and consisted of the following: Estimated Fair Value of Consideration Transferred Cash (1) $ 3,918,185 Class A-1 Units 63,643,000 Class A-2 Units (contingent earnout) 30,900,000 Total Consideration Transferred 98,461,185 Fair value of our preexisting 50% equity interests 12,800,000 Total $ 111,261,185 (1) We assumed a net asset of approximately $0.5 million, which per the Contribution Agreement we were required to pay to SAM the value thereof and such amount was included above as cash consideration. As a result of this acquisition, we remeasured the book value of our preexisting 50% equity method investments in our Tenant Programs joint ventures to fair value, which resulted in a gain of approximately $8.0 million which was presented in the gain resulting from acquisition of unconsolidated affiliates line-item in our consolidated statements of operations as of the date of the acquisition. The fair values of the Tenant Programs joint ventures were determined based on a discounted cash flow valuation of the projected cash flows. The estimated fair value of the Class A-1 Units issued was determined using the Company’s then current net asset value, which was based on an income approach to value the properties and the valuation of the assets acquired in the Self Administration Transaction, as described herein, adjusted for market related adjustments and illiquidity discounts. These fair value measurements are based on significant inputs not observable in the market and thus represent a Level 3 measurement as discussed in Note 2. The key assumptions used in estimating the fair value of the Class A-1 Units and Class A-2 Units consideration included (i) a marketability discount of 5%, (ii) a capitalization rate of 5.16% and (iii) annual net operating income. The estimated fair value of the contingent earnout, Class A-2 Units, was determined using the net asset value calculation described above and further adjusted based on a discounted probability weighted forecast of achieving the requisite AUM thresholds. Subsequent to the completion of the Self Administration Transaction, such liability is required to be recorded at fair value. For additional information, see Note 5 – Self Administration Transaction – Intangible Assets, Goodwill and Certain Other Assets and Liabilities. As of December 31, 2020, we have added incremental assets under management of approximately $250 million since the close of the Self Administration Transaction. Allocation of Consideration The consideration transferred pursuant to the Self Administration Transaction was allocated to the assets acquired and liabilities assumed, based upon their estimated fair values as of the acquisition date. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed: Identifiable Assets Acquired at Fair Value Cash and cash equivalents $ 36,443 Restricted cash 94,999 Land 975,000 Building 5,389,000 Site Improvements 136,000 Equipment, furniture and fixtures 651,000 Investments in Managed REITs 5,600,000 Other assets 1,084,629 Intangibles - customer relationships 1,600,000 Trademarks 19,800,000 Intangibles - management contracts 24,900,000 Total identifiable assets acquired $ 60,267,071 Identifiable Liabilities Assumed at Fair Value Debt $ 19,219,126 Accounts payable and accrued expenses 722,286 Deferred tax liabilities, net 7,415,654 Total liabilities assumed $ 27,357,066 Net identifiable assets acquired $ 32,910,005 Goodwill 78,372,980 Non-controlling interest related to consolidated Tenant Programs joint ventures (21,800 ) Net assets acquired $ 111,261,185 The fair value estimate of property and equipment utilized a combination of the income, cost and market approaches, depending on the characteristics of the asset classification. The fair value of land was determined using the market approach, which considers sales of comparable assets and applies compensating factors for any differences specific to the particular assets. Equipment was valued based on estimated replacement cost. Building and site improvements were valued using the cost approach using a direct cost model built on estimates of replacement cost. The intangible assets acquired primarily consist of trademarks and the property management and advisory contracts related to the Managed REITs. The value of the property management and advisory contracts were determined based on a discounted cash flow valuation of the projected cash flows of the acquired contracts. The deferred tax liability is the result of differences between the GAAP carrying value of certain amortizing assets and the carrying value for tax purposes related to activities which are conducted through our TRS. The goodwill recognized was supported by several factors, including that the Company becoming self-managed; additionally, the Managed REIT Platform business brings an established management platform with numerous strategic benefits including growth from new income streams and the ability to offer new products. The results of the acquisition have been included in our consolidated statements of operations since the closing date of the transaction. Fair Value of Equity Exchanged Related to the Redemption of Limited Partnership Interests In connection with the Redemption of Limited Partner Interest Agreement and the Contribution Agreement, the Former External Advisor redeemed its special limited partnership interest and 20,000 limited partnership units in the Operating Partnership in exchange for $200,000 in cash and Class A-1 Units. The exchange was accounted for as a transaction among equity holders with no gain or loss recognized. The fair value of the special limited partnership interest contributed was determined to be approximately $ 18.8 million, while the book value of the Class A-1 Units issued that was recorded in noncontrolling interest was approximately $ 9.1 million. The difference between the fair value of the special limited partnership interest received and the book value of the Operating Partnership Units issued was recorded to additional paid in capital. The estimated fair value of the Class A-1 Units issued was determined consistent with the methodology described above. The fair value of the special limited partnership interest was determined based on discounted projections of the future value of the special limited partnership interest which included various assumptions, including estimated future distributions and the related timing thereto. Administrative Services Agreement On June 28, 2019, we along with our Operating Partnership, the TRS and SSA (collectively, the “Company Parties”) entered into an Administrative Services Agreement with SAM (the “Administrative Services Agreement”), which, as amended, requires that the Company Parties will be reimbursed for providing certain operational and administrative services to SAM which may include, without limitation, accounting and financial support, IT support, HR support, advisory services and operations support, and administrative support as set forth in the Administrative Services Agreement and SAM will be reimbursed for providing certain operational and administrative services to the Company Parties which may include, without limitation, due diligence support, marketing, fulfillment and offering support, events support, insurance support, and administrative and facilities support. SAM and the Company Parties will reimburse one another based on the actual costs of providing their respective services. Additionally, SAM will pay the Company Parties an allocation of rent and overhead for the portion it occupies in the Ladera Office. Such agreement has a term of

Self Administration Transacti_2

Self Administration Transaction - Intangible Assets, Goodwill and Certain Other Assets and Liabilities	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Self Administration Transaction - Intangible Assets, Goodwill and Certain Other Assets and Liabilities	Note 5. Self Administration Transaction - Intangible Assets, Goodwill and Certain Other Assets and Liabilities The emergence and spread of the COVID-19 pandemic caused significant volatility and disruption in the economy and the capital markets beginning in the first quarter of 2020. The increase in consumer and investor uncertainty had an impact on our Managed REITs, specifically the Managed REITs’ ability to attract investor equity in the face of economic weakness and volatility. The volatility and uncertainty in the economy caused various broker dealers that our Managed REITs had selling agreements with to temporarily halt non-traded REIT sales within their advisory networks. Effective April 30, 2020, the Managed REITs suspended their offerings. Given the disruption that COVID-19 had on the capital markets and our Managed REITs and their ability to raise additional equity, accordingly we evaluated the various intangible assets and liabilities associated with the sponsorship of the Managed REITs for impairment. Based on the above facts, we revised our capital raise projections for the Managed REITs. We then evaluated the revised projected undiscounted future cash flows of our amortizing intangible assets to determine if they exceeded their respective carrying values and we determined that certain trademarks and management contracts acquired in the Self Administration Transaction were impaired. For such assets we recorded impairments to reduce their carrying value to their respective fair values. For our indefinite-lived trademark we determined that the carrying value was in excess of its fair value and therefore recorded an impairment equal to the difference. As a result, we recorded impairment charges totaling approximately $11.7 million to intangible assets, consisting of approximately $3.3 million related to our trademarks, approximately $2.2 million related to the management contracts of SST IV and approximately $6.2 million related to the management contracts of SSGT II. We similarly evaluated goodwill for impairment and determined that the carrying value of the goodwill related to our Managed REIT segment was in excess of fair value, and therefore impaired and we recognized an impairment charge of approximately $24.7 million. Goodwill related to our self storage operations was not impaired. In connection with the Self Administration Transaction, we acquired a special limited partnership interest in SST IV and SSGT II. This interest, in certain situations, may entitle us to various subordinated distributions under SST IV’s and SSGT II’s operating partnership agreements. Given the revised capital projections noted above, the projected future subordinated distributions had revised estimated fair values less than their carrying values. We deemed this difference to be an other than temporary decline in value and have therefore recorded an impairment charge of approximately $4.4 million. As a result of the Self Administration Transaction, we recorded a deferred tax liability, which is the result of differences between the GAAP carrying value of certain amortizing assets and the carrying value for tax purposes of certain assets related to activities which are conducted through our TRS. As we reduced the GAAP carrying value of such assets, primarily the Managed REIT management contracts, we adjusted the value of our deferred tax liabilities by pro-rata amounts, reducing the deferred tax liabilities in aggregate by approximately $ 2.4 million, and recorded such adjustment as other income within the other line-item in our consolidated statement of operations. In connection with the Self Administration Transaction, we issued the Class A-2 Units, as a form of contingent consideration, which is required to be revalued at each reporting period, based on the discounted probability weighted forecast of achieving the requisite AUM thresholds or the occurrence of an Earnout Acceleration Event. The revised capital raise projections discussed above reduced the probability of the Class A-2 Units converting, which had the result of decreasing the estimated fair value of the contingent earnout liability from approximately $31.1 million as of December 31, 2019 to approximately $23.9 million as of the date of the impairment analysis. As of December 31, 2020, the estimated fair value of the contingent earnout liability is approximately $28.6 million.

Pro Forma Financial Information

Pro Forma Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2020
Business Acquisition Pro Forma Information [Abstract]
Pro Forma Financial Information (Unaudited)	Note 6. Pro Forma Financial Information (Unaudited) The table set forth below summarizes, on a pro forma basis, the combined results of operations of the Company for the years ended December 31, 2020 and 2019. Such presentation reflects the Company’s acquisitions that occurred during 2019, which met the GAAP definition of a business in effect at that time, as if the acquisitions had occurred as of January 1, 2018. This pro forma information does not purport to represent what the actual consolidated results of operations of the Company would have been for the periods indicated, nor does it purport to predict the results of operations for future periods. Year Ended December 31, 2020 Year Ended December 31, 2019 Pro forma revenue $ 124,024,363 $ 113,847,174 Pro forma operating expenses $ (144,097,906 ) $ (103,065,650 ) Pro forma net income (loss) attributable to common stockholders $ (53,586,219 ) $ (27,522,507 ) The pro forma financial information for the years ended December 31, 2020 and 2019 was adjusted to exclude none and approximately $1.6 million, respectively, for acquisition related expenses.

Debt

Debt	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt	Note 7. Debt The Company’s debt is summarized as follows: Encumbered Property December 31, 2020 December 2019 Interest Rate Maturity Date KeyBank CMBS Loan (1) $ 95,000,000 $ 95,000,000 3.89 % 8/1/2026 KeyBank Florida CMBS Loan (2) 52,000,000 52,000,000 4.65 % 5/1/2027 Midland North Carolina CMBS Loan (3) 46,427,994 47,048,287 5.31 % 8/1/2024 Canadian CitiBank Loan (4)(12) 87,337,110 85,500,660 2.72 % 10/9/2021 CMBS SASB Loan (5)(12) 235,000,000 235,000,000 3.13 % (11) 2/9/2022 CMBS Loan (6) 104,000,000 104,000,000 5.00 % 2/1/2029 Secured Loan (7) (8)(12) 85,512,000 85,512,000 3.00 % 1/24/2022 Stoney Creek Loan (9)(12) 5,712,058 5,591,950 4.65 % 10/1/2021 Torbarrie Loan (10)(12) 6,423,863 5,936,996 4.65 % 9/1/2021 Ladera Office Loan 4,099,152 4,179,994 4.29 % 11/1/2026 Premium on secured debt, net 461,823 592,505 Debt issuance costs, net (4,021,767 ) (7,629,390 ) Total debt $ 717,952,233 $ 712,733,002 (1) Boynton Beach, and Lancaster II) with monthly interest only payments until September 2021, at which time both interest and principal payments will be due monthly. The separate assets of these encumbered properties are not available to pay our other debts . (2) (3) (4) e purchased interest rate caps that cap CDOR at 3.0% until October 15, 2021. (5) (6) (7) (8) (9) (10) (11) on this loan (12) On March 17, 2021, these loans were paid off in full in conjunction with the SST IV Merger. See Note 16 – Subsequent Events for additional information. The weighted average interest rate on our consolidated debt, excluding the impact of our interest rate hedging activities, as of December 31, 2020 was approximately 3.72%. We are subject to certain restrictive covenants relating to the outstanding debt. As of December 31, 2020, we were in compliance with all such covenants. On January 24, 2019, in conjunction with the SSGT Mergers, we, through certain wholly-owned special purpose entities, entered into various financings (“SSGT Merger Financings”), as follows: Merger Financings Principal Borrowing as of Merger Date CMBS SASB Loan $ 235,000,000 CMBS Loan 104,000,000 Secured Loan 89,178,000 Senior Term Loan 72,000,000 Total $ 500,178,000 The proceeds from the SSGT Merger Financings were primarily used to facilitate the SSGT Mergers as previously described, including the payment of the SSGT merger consideration and the repayment, in full, of certain of our debt, as follows: Merger Financings Principal Repaid Raleigh/Myrtle Beach promissory note $ 11,862,471 Amended KeyBank Credit Facility 98,782,500 Oakland and Concord loan 19,443,753 $11M KeyBank Subordinate Loan 11,000,000 Total $ 141,088,724 In conjunction with the SSGT Merger Financings, we recognized a loss on extinguishment of debt of approximately $1.5 million, primarily attributable to prepayment penalties related to the CMBS SASB Loan This loan is a $235 million commercial mortgage-backed securities (“CMBS”), single-asset/single-borrower (“SASB”) financing (the “CMBS SASB Loan”) with KeyBank, National Association (“KeyBank”) and Citi Real Estate Funding Inc. or its affiliates (“Citibank”), as initial lenders (together, the “CMBS SASB Lenders”), comprised of (A) a mortgage loan in the amount of $180 million (the “CMBS SASB Mortgage Loan”) and (B) a mezzanine loan in the amount of $55 million (the “CMBS SASB Mezzanine Loan”). The CMBS SASB Mortgage Loan is secured by a first mortgage or deed of trust on each of 29 wholly owned properties (the “CMBS SASB Properties”), and the CMBS SASB Mezzanine Loan is secured by a pledge of the equity interests in the 29 special purpose entities that own the CMBS SASB Properties. Each loan has a maturity date of February 9, 2022, which may, in certain circumstances, be extended at the option of the respective borrower for two consecutive terms of one year each, as set forth in the respective loan agreement (collectively, the “CMBS SASB Loan Agreements”). Monthly payments due under the CMBS SASB Loan Agreements are interest-only, with the full principal amount becoming due and payable on the respective maturity date. The amounts outstanding under the CMBS SASB Loan Agreements bear interest at an annual rate equal to LIBOR plus 3%. In addition, pursuant to the requirements of the CMBS SASB Loan Agreements: (a) the borrower with respect to the CMBS SASB Mortgage Loan has purchased an interest rate cap with a notional amount of $180 million, with an effective date of January 24, 2019, whereby LIBOR is capped at 3% through February 15, 2022 and (b) the borrower with respect to the CMBS SASB Mezzanine Loan has purchased an interest rate cap with a notional amount of $55 million, with an effective date of January 24, 2019, whereby LIBOR is capped at 3% through February 15, 2022. On June 7, 2019, to effectively terminate our $180 million and $55 million existing interest rate caps, we sold an offsetting interest rate cap with a notional amount of $235 million, whereby LIBOR is capped at 3% through February 15, 2022. We simultaneously entered into an interest rate swap with a notional amount of $235 million, whereby LIBOR is fixed at 1.79% through February 15, 2022. None of the CMBS SASB Loan may be prepaid, in whole or in part, without satisfying certain conditions as set forth in the respective CMBS SASB Loan Agreements, such as the payment of a spread maintenance premium if the prepayment is made within the first two years. Thereafter the CMBS SASB Loan may be prepaid in whole or in part at par without penalty. The loan documents for the CMBS SASB Loan contain: customary affirmative, negative and financial covenants; agreements; representations; warranties and borrowing conditions; reserve requirements and events of default all as set forth in such loan documents. In addition, and pursuant to the terms of the limited recourse guaranties, with respect to the CMBS SASB Mortgage Loan (the “CMBS SASB Mortgage Loan Guaranty”), and with respect to the CMBS SASB Mezzanine Loan (the “CMBS SASB Mezzanine Loan Guaranty” and collectively the “CMBS SASB Guarantees”), each dated January 24, 2019, in favor of the CMBS SASB Lenders, the Company serves as a non-recourse guarantor with respect to each of the CMBS SASB Mortgage Loan and the CMBS SASB Mezzanine Loan and is subject to certain net worth and liquidity requirements, each as described in the CMBS SASB Guarantees . CMBS Loan The CMBS loan is a $104 million CMBS financing with KeyBank as lender (the “CMBS Lender”) pursuant to a mortgage loan (the “CMBS Loan”), and The amounts outstanding under the CMBS Loan bear interest at an annual fixed rate equal to 5%. Commencing two years after securitization, the CMBS Loan may be defeased in whole, but not in part, subject to certain conditions as set forth in the CMBS Loan Agreement. The loan documents for the CMBS Loan contain: customary affirmative, negative and financial covenants; agreements; representations; warranties and borrowing conditions; reserve requirements and events of default all as set forth in such loan documents. In addition, and pursuant to the terms of the limited recourse guaranty dated January 24, 2019, in favor of the CMBS Lender, the Company serves as a non-recourse guarantor with respect to the CMBS Loan. Secured Loan This represents secured financing with KeyBank, Fifth Third Bank (“Fifth Third”), and SunTrust Bank (“SunTrust”) as equal co-lenders (the “Secured Lenders”) pursuant to a mortgage loan (the “Secured Loan”). . The amounts outstanding under the Secured Loan Agreement bear interest at an annual rate equal to LIBOR plus 2.5%. On January 24, 2019, the borrowers entered into an interest rate swap arrangement with a notional amount of approximately $89.2 million, such that LIBOR was fixed at approximately 2.6% until August 1, 2020. On October 29, 2019, in connection with the settlement of a previously existing loan, we restructured this swap to reduce the notional amount to approximately $85.5 million, an amount equivalent to the then outstanding principal on the Secured Loan. On August 3, 2020, we purchased an interest rate cap with a notional amount of $80 million that effectively caps LIBOR at 0.5% through August 2, 2021. The loan documents for the Secured Loan contain: customary affirmative, negative and financial covenants; agreements; representations; warranties and borrowing conditions; reserve requirements and events of default all as set forth in such loan documents. In particular, the Secured Loan Agreement imposes certain requirements on the Company such as a total leverage ratio, tangible net worth and liquidity requirements, fixed charge coverage ratios and limits on the amount of unhedged variable rate debt exposure. On May 8, 2020, we completed an amendment to the Secured Loan with the Secured Lenders. The Secured Loan amendment revised certain financial covenants, including increasing the REIT-level liquidity covenant from $10 million to $15 million, and the addition of a REIT-level debt service coverage ratio. Additionally, the amendment added a minimum rate for LIBOR of 0.50% . Secured Loan Canadian CitiBank Loan On October 11, 2018, we, through 10 special purpose entities wholly owned by our Operating Partnership, entered into a loan agreement with The CitiBank Loan Agreement is a term loan, the original maturity date was October 9, 2020. The loan may, in certain circumstances, be extended at our option for three consecutive terms of one year each. We exercised the first one year extension option, extending the maturity date to October 9, 2021. Monthly payments due under the CitiBank Loan Agreement are interest-only, with the full principal amount becoming due and payable on the maturity date. The amounts outstanding under the CitiBank Loan Agreement bear interest at a rate equal to the sum of the “CDOR” (as defined in the CitiBank Loan Agreement) and 2.25%. If we exercise our third extension option, the interest rate shall be increased by 0.25%. In addition, pursuant to the requirements of the CitiBank Loan Agreement, we have purchased interest rate caps with a combined notional amount of $112 million CAD, whereby the CDOR is capped at 3.00% through October 15, 2021. The following table presents the future principal payment requirements on outstanding debt as of December 31, 2020: 2021 $ 100,767,277 2022 323,426,414 2023 3,384,140 2024 47,043,508 2025 2,869,187 2026 and thereafter 244,021,651 Total payments 721,512,177 Premium on secured debt, net 461,823 Debt issuance costs, net (4,021,767 ) Total $ 717,952,233 On March 17, 2021, in conjunction with the SST IV Merger, we entered into new financings, assumed certain debt from SST IV, and paid off certain of our other existing debt. See Note 16 – Subsequent Events. The following table presents the future principal payment requirements on outstanding debt as of March 17, 2021: 2021 $ 1,100,433 2022 2,914,414 2023 44,052,298 2024 248,046,008 2025 2,869,187 2026 and thereafter 534,406,353 Total payments $ 833,388,693

Preferred Equity

Preferred Equity	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Preferred Equity	Note 8. Preferred Equity Series A Convertible Preferred Stock On October 29, 2019 (the “Commitment Date”), we entered into a preferred stock purchase agreement (the “Purchase Agreement”) with Extra Space Storage LP (the “Investor”), a subsidiary of Extra Space Storage Inc. (NYSE: EXR), pursuant to which the Investor committed to purchase up to $200 million in preferred shares (the aggregate shares to be purchased, the “Preferred Shares”) of our new Series A Convertible Preferred Stock (the “Series A Convertible Preferred Stock”), in one or more closings (each, a “Closing,” and collectively, the “Closings”). The initial closing (the “Initial Closing”) in the amount of $150 million occurred on the Commitment Date, and the second and final closing in the amount of $50 million occurred on October 26, 2020. We incurred approximately $3.6 million in issuance costs related to the Series A Convertible Preferred Stock, which were recorded as a reduction to Series A Convertible Preferred stock on our consolidated balance sheets. The shares of Series A Convertible Preferred Stock rank senior to all other shares our capital stock, including our common stock, with respect to rights to receive dividends and to participate in distributions or payments upon any voluntary or involuntary liquidation, dissolution or winding up of the Company. Dividends payable on each share of Series A Convertible Preferred Stock will initially be equal to a rate of 6.25% per annum. If the Series A Convertible Preferred Stock has not been redeemed on or prior to the fifth anniversary date of the Initial Closing, the dividend rate will increase an additional 0.75% per annum each year thereafter to a maximum of 9.0% per annum until the tenth anniversary of the Initial Closing, at which time the dividend rate shall increase 0.75% per annum each year thereafter until the Series A Convertible Preferred Stock is redeemed or repurchased in full. The dividends are payable in arrears for the prior calendar quarter on or before the 15 th Upon any voluntary or involuntary liquidation, dissolution or winding up of the Company, the holders of Series A Convertible Preferred Stock will be entitled to receive a payment equal to the greater of (i) aggregate purchase price of all outstanding Preferred Shares, plus any accrued and unpaid dividends (the “Liquidation Amount”) and (ii) the amount that that would have been payable had the Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to such liquidation. Subject to certain additional redemption rights, as described herein, we have the right to redeem the Series A Convertible Preferred Stock for cash at any time following the fifth anniversary of the Initial Closing. The amount of such redemption will be equal to the Liquidation Amount. Upon the listing of our common stock on a national securities exchange (the “Listing”), we have the right to redeem any or all outstanding Series A Convertible Preferred Stock at an amount equal to the greater of (i) the amount that would have been payable had such Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to the Listing, and then all of such Preferred Shares were sold in the Listing, or (ii) the Liquidation Amount, plus a premium amount (the “Premium Amount”) of 10%, 8%, 6%, 4%, or 2% if redeemed prior to the first, second, third, fourth, or fifth anniversary dates of issuance, respectively, or 0% if redeemed thereafter, as set forth in the Articles Supplementary. Upon a change of control event, we have the right to redeem any or all outstanding Series A Convertible Preferred Stock at an amount equal to the greater of (i) the amount that would have been payable had the Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to such change of control or (ii) the Liquidation Amount, plus the Premium Amount, as set forth in the Articles Supplementary. In addition, subject to certain cure provisions, if we fail to maintain our status as a real estate investment trust, the holders of Series A Convertible Preferred Stock have the right to require us to repurchase the Series A Convertible Preferred Stock at an amount equal to the Liquidation Amount with no Premium Amount. At any time after the earlier to occur of (i) the second anniversary of the Initial Closing or (ii) 180 days after a Listing, the holders of Series A Convertible Preferred Stock have the right to convert any or all of the Series A Convertible Preferred Stock held by such holders into common stock at a rate per share equal to the quotient obtained by dividing the Liquidation Amount by the conversion price. The conversion price is $ 10.66 , as may be adjusted in connection with stock splits, stock dividends and other similar transactions. The holders of Series A Convertible Preferred Stock are not entitled to vote on any matter submitted to a vote of our stockholders, except that in the event that the dividend for the Series A Convertible Preferred Stock has not been paid for at least four quarters (whether or not consecutive), the holders of Series A Convertible Preferred Stock have the right to vote together with our stockholders on any matter submitted to a vote of our stockholders, upon which the holders of the Series A Convertible Preferred Stock and holders of common stock shall vote together as a single class. The number of votes applicable to a share of Series A Convertible Preferred Stock will be equal to the number of shares of common stock a share of Series A Convertible Preferred Stock could have been converted into as of the record date set for purposes of such stockholder vote. This foregoing limited voting right shall cease when all past dividend periods have been paid in full. In addition, the affirmative vote of the holders of a majority of the outstanding shares of Series A Convertible Preferred Stock is required in certain customary circumstances, as well as other circumstances, such as (i) our real estate portfolio exceeding a leverage ratio of 60% loan-to-value, (ii) entering into certain transactions with our Executive Chairman as of the Commitment Date, or his affiliates, (iii) effecting a merger (or similar) transaction with an entity whose assets are not at least 80% self storage related and (iv) entering into any line of business other than self storage and ancillary businesses, unless such ancillary business represents revenues of less than 10% of our revenues for our last fiscal year. In connection with the issuance of the Series A Convertible Preferred Stock, we and the Investor also entered into an investors’ rights agreement (the “Investors’ Rights Agreement”) which provides the Investor with certain customary protections, including demand registration rights and “piggyback” registration rights with respect to our common stock issued to the Investor upon conversion of the Preferred Shares. As of December 31, 2020, there were 200,000 Preferred Shares outstanding with an aggregate liquidation preference of approximately $202.9 million, which consists of $150 million from the Initial Closing, $50 million from a closing on October 26, 2020 and approximately $2.9 million of accumulated and unpaid distributions. As of December 31, 2019, there were 150,000 Preferred Shares outstanding with an aggregate liquidation preference of approximately $151.7 million, which consisted of $150 million from the Initial Closing, approximately $1.6 million of accumulated and unpaid distributions, and approximately $0.1 million of accumulated and unpaid fees on the undrawn commitment.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 9. Derivative Instruments Interest Rate Derivatives Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we use interest rate swaps and caps as part of our interest rate risk management strategy. The effective portion of the change in the fair value of the derivative that qualifies as a cash flow hedge is recorded in accumulated other comprehensive income (loss) (“AOCI”) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest expense as interest payments are made on our variable-rate debt. We do not use interest rate derivatives for trading or speculative purposes. Derivatives not designated as hedges are not speculative and are used to manage our exposure to interest rate movements and other identified risks but we have elected not to apply hedge accounting. Changes in the fair value of interest rate derivatives not designated in hedging relationships are recorded in other income (expense) as income within our consolidated statements of operations . Foreign Currency Hedges Our objectives in using foreign currency derivatives are to add stability to potential fluctuations in exchange rates between foreign currencies and the U.S. dollar and to manage our exposure to exchange rate movements. To accomplish this objective, we use foreign currency forwards and foreign currency options as part of our exchange rate risk management strategy. A foreign currency forward contract is a commitment to deliver a certain amount of currency at a certain price on a specific date in the future. By entering into the forward contract and holding it to maturity, we are locked into a future currency exchange rate in an amount equal to and for the term of the forward contract. A foreign currency option contract is a commitment by the seller of the option to deliver, solely at the option of the buyer, a certain amount of currency at a certain price on a specific date. For derivatives designated as net investment hedges, the changes in the fair value of the derivatives are reported in accumulated other comprehensive income. Amounts are reclassified out of accumulated other comprehensive income (loss) into earnings when the hedged net investment is either sold or substantially liquidated. The following table summarizes the terms of our derivative financial instruments as of December 31, 2020: Notional Amount Strike Effective Maturity Interest Rate Swap: LIBOR Swap $ 235,000,000 1.79 % June 15, 2019 February 15, 2022 Interest Rate Caps: LIBOR Cap $ 80,000,000 0.50 % August 3, 2020 August 2, 2021 CDOR Cap 99,300,000 (1) 3.00 % October 11, 2018 October 15, 2021 CDOR Cap 1,000,000 (1) 3.00 % March 28, 2019 October 15, 2021 CDOR Cap 11,700,000 (1) 3.00 % May 28, 2019 October 15, 2021 Foreign Currency Forward: Denominated in CAD $ 95,000,000 (1) 1.334 February 10, 2020 February 10, 2021 (2) (1) Notional amounts shown are denominated in CAD. (2) On February 10, 2021, we rolled this currency forward into a new $95 million CAD currency forward with a strike price of 1.334, and a maturity date of April 12, 2021 On January 25, 2019, we settled a $90 million CAD foreign currency forward, receiving a net settlement of approximately $2.1 million and simultaneously entered into a $95 million CAD foreign currency forward. On July 8, 2019, we settled the $95 million CAD foreign currency forward, paying a net settlement of approximately $0.6 million and simultaneously entered into a $95 million CAD currency option. On December 9, 2019 the CAD currency option expired and we simultaneously entered into a two month $95 million CAD foreign currency forward . A portion of our gain (loss) from our settled and unsettled foreign currency hedges is recorded net in foreign currency hedge contract gain (loss) in our consolidated statements of comprehensive loss, the other portion, a loss of approximately $0.8 million and $0.4 million related to the ineffective portion is recorded in other income within our consolidated statements of operations for the years ended December 31, 2020 and 2019, respectively. The following table summarizes the terms of our derivative financial instruments as of December 31, 2019: Notional Amount Strike Effective Date Maturity Interest Rate Swaps: LIBOR Swap $ 85,512,000 2.61 % January 24, 2019 August 1, 2020 (3) LIBOR Swap 235,000,000 1.79 % June 15, 2019 February 15, 2022 Interest Rate Cap: CDOR Cap $ 99,300,000 (1) 3.00 % October 11, 2018 October 15, 2021 CDOR Cap 1,000,000 (1) 3.00 % March 28, 2019 October 15, 2021 CDOR Cap 11,700,000 (1) 3.00 % May 28, 2019 October 15, 2021 Foreign Currency Forward: Denominated in CAD $ 95,000,000 (1) 1.323 December 9, 2019 February 10, 2020 (2) (1) Notional amount shown is denominated in CAD. (2) We settled this forward on February 10, 2020, receiving a net settlement of approximately $0.5 million and simultaneously entered into another $95 million CAD foreign currency forward with a maturity date of February 10, 2021 . (3) On August 3, 2020, we entered into a LIBOR interest rate cap for a notional amount of $80 million which caps LIBOR at 0.5% through August 2, 2021. The following table presents a gross presentation of the fair value of our derivative financial instruments as well as their classification on our consolidated balance sheets as of December 31, 2020 and 2019: Asset/Liability Derivatives Fair Value Balance Sheet Location December 31, 2020 December 31, 2019 Interest Rate Swaps Accounts payable and accrued liabilities $ 4,379,424 $ 1,695,140 Interest Rate Caps Other assets $ — $ 28,847 Foreign Currency Hedges Accounts payable and accrued liabilities $ 3,270,910 $ 1,425,632

Segment Disclosures

Segment Disclosures	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment Disclosures	Note 10. Segment Disclosures Prior to the Self Administration Transaction on June 28, 2019, we internally evaluated all of our properties and interests therein as one industry segment and, accordingly, did not report segment information. Subsequent to the Self Administration Transaction, we now operate in two reportable business segments: (i) self storage operations and (ii) our Managed REIT Platform business. Management evaluates performance based upon net operating income (“NOI”). For our self storage operations, NOI is defined as leasing and related revenues, less property level operating expenses. NOI for the Company’s Managed REIT Platform business represents Managed REIT Platform revenues less Managed REIT Platform expenses. The following tables summarize information for the reportable segments for the periods presented: Year Ended December 31, 2020 Managed REIT Corporate Self Storage Platform and Other Total Revenues: Self storage rental revenue $ 104,888,883 $ — $ — $ 104,888,883 Ancillary operating revenue 5,286,042 — — 5,286,042 Managed REIT Platform revenue — 8,048,630 — 8,048,630 Reimbursable costs from Managed REITs — 5,800,808 — 5,800,808 Total revenues 110,174,925 13,849,438 — 124,024,363 Operating expenses: Property operating expenses 38,305,199 — — 38,305,199 Managed REIT Platform expense — 2,806,921 — 2,806,921 Reimbursable costs from Managed REITs — 5,800,808 — 5,800,808 General and administrative — — 16,471,199 16,471,199 Depreciation 31,773,526 — 521,101 32,294,627 Intangible amortization expense 5,234,312 4,542,804 — 9,777,116 Other property acquisition expenses 1,366,092 — — 1,366,092 Contingent earnout adjustment — (2,500,000 ) — (2,500,000 ) Impairment of goodwill and intangible assets — 36,465,732 — 36,465,732 Impairment of investments in Managed REITs — 4,376,879 — 4,376,879 Total operating expenses 76,679,129 51,493,144 16,992,300 145,164,573 Operating income (loss) 33,495,796 (37,643,706 ) (16,992,300 ) (21,140,210 ) Other income (expense): Interest expense (32,417,179 ) — (180,434 ) (32,597,613 ) Interest expense – accretion of fair market value of secured debt 130,682 — — 130,682 Interest expense – debt issuance costs (3,577,730 ) — (8,651 ) (3,586,381 ) Other 1,708,026 4,557,129 (278,436 ) 5,986,719 Net loss $ (660,405 ) $ (33,086,577 ) $ (17,459,821 ) $ (51,206,803 ) Year Ended December 31, 2019 Managed REIT Corporate Self Storage Platform and Other Total Revenues: Self storage rental revenue $ 99,494,560 $ — $ — $ 99,494,560 Ancillary operating revenue 3,706,700 — — 3,706,700 Managed REIT Platform revenue — 3,068,306 — 3,068,306 Reimbursable costs from Managed REITs — 3,258,983 — 3,258,983 Total revenues 103,201,260 6,327,289 — 109,528,549 Operating expenses: Property operating expenses 35,723,111 — — 35,723,111 Property operating expenses – affiliates 6,605,670 — — 6,605,670 Managed REIT Platform expense — 2,739,556 — 2,739,556 Reimbursable costs from Managed REITs — 3,258,983 — 3,258,983 General and administrative — — 10,461,453 10,461,453 Depreciation 29,305,979 — 299,299 29,605,278 Intangible amortization expense 9,051,083 2,442,311 — 11,493,394 Contingent earnout adjustment — — 200,000 200,000 Self administration transaction expenses — — 1,572,238 1,572,238 Acquisition expenses – affiliates 84,061 — — 84,061 Other property acquisition expenses 141,489 — — 141,489 Total operating expenses 80,911,393 8,440,850 12,532,990 101,885,233 Gain on sale of real estate 3,944,696 — — 3,944,696 Operating income (loss) 26,234,563 (2,113,561 ) (12,532,990 ) 11,588,012 Other income (expense): Interest expense (37,469,725 ) — (93,522 ) (37,563,247 ) Interest expense – accretion of fair market value of secured debt 131,611 — — 131,611 Interest expense – debt issuance costs (3,990,421 ) — (6,255 ) (3,996,676 ) Net loss on extinguishment of debt (2,635,278 ) — (12,355 ) (2,647,633 ) Gain resulting from acquisition of unconsolidated affiliates 8,017,353 — — 8,017,353 Other (1,159,570 ) 534,612 — (624,958 ) Net loss $ (10,871,467 ) $ (1,578,949 ) $ (12,645,122 ) $ (25,095,538 ) The following table summarizes our total assets by segment: Segments December 31, 2020 December 31, 2019 Self Storage $ 1,172,178,148 (1) $ 1,175,887,634 (1) Managed REIT Platform 44,482,625 (1) 73,939,002 (1) Corporate and Other 65,560,284 61,607,095 Total assets $ 1,282,221,057 $ 1,311,433,731 (1) Included in the assets of the Self Storage and the Managed REIT Platform segments as of December 31, 2020, are approximately $45.3 million, and $8.4 million of goodwill, respectively. As of December 31, 2019, such amounts were approximately $45.3 million and $33.1 million of goodwill, respectively.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Note 11. Related Party Transactions Through the closing of the Self Administration Transaction on June 28, 2019, we incurred expenses under the following advisory and property management agreements; commencing on such closing and continuing thereafter we no longer incur such expenses. The Former Dealer Manager Agreement and the Transfer Agent Agreement described below were not impacted by the Self Administration Transaction. Fees to Affiliates Our Advisory Agreement with our Former External Advisor, our dealer manager agreement, as amended ("Former Dealer Manager Agreement") with our Former Dealer Manager, our Property Management Agreements with our Former External Property Managers and our Transfer Agent Agreement with our Transfer Agent entitle such affiliates to specified fees upon the provision of certain services with regard to our Offering and investment of funds in real estate properties, among other services, as well as certain reimbursements, as described below . Advisory Agreement Prior to the Self Administration Transaction we did not have any employees. Our Former External Advisor was primarily responsible for managing our business affairs and carrying out the directives of our board of directors. Our Former External Advisor received various fees and expenses under the terms of our Advisory Agreement. As a result of the Self Administration Transaction, on June 28, 2019, we acquired approximately 350 self storage professionals and other personnel and now perform such services on our own behalf. Our Former External Advisor received acquisition fees equal to 1.75% of the contract purchase price of each property we acquired plus reimbursement of any acquisition expenses incurred by our Former External Advisor. Our Former External Advisor also received a monthly asset management fee equal to 0.05208%, which is one-twelfth of 0.625%, of our aggregate asset value, as defined in the Advisory Agreement. Pursuant to the Advisory Agreement, our Former External Advisor was entitled to reimbursement of our Former External Advisor’s direct and indirect costs of providing administrative and management services to us. Former Dealer Manager Agreement In connection with our Primary Offering, our Former Dealer Manager received a sales commission of up to 7.0% of gross proceeds from sales of Class A Shares and up to 2.0% of gross proceeds from the sales of Class T Shares in the Primary Offering and a dealer manager fee up to 3.0% of gross proceeds from sales of both Class A Shares and Class T Shares in the Primary Offering under the terms of the Former Dealer Manager Agreement. In addition, our Former Dealer Manager receives an ongoing stockholder servicing fee as discussed in Note 2 – Summary of Significant Accounting Policies – Organization and Offering Costs. Affiliated Former Dealer Manager SAM owns a 15% non-voting equity interest in our Former Dealer Manager. Affiliates of our Former Dealer Manager own limited partnership interests in our Operating Partnership. Transfer Agent Agreement SAM owns 100% of the membership interests of Strategic Transfer Agent Services, LLC, our transfer agent (“Transfer Agent”), which is a registered transfer agent with the SEC. Pursuant to our transfer agent agreement, our Transfer Agent provides transfer agent and registrar services to us. These services are substantially similar to what a third party transfer agent would provide in the ordinary course of performing its functions as a transfer agent, including, but not limited to: providing customer service to our stockholders, processing the distributions and any servicing fees with respect to our shares and issuing regular reports to our stockholder. Our Transfer Agent may retain and supervise third party vendors in its efforts to administer certain services. We believe that our Transfer Agent, through its knowledge and understanding of the direct participation program industry which includes non-traded REITs, is particularly suited to provide us with transfer agent and registrar services. Our Transfer Agent also conducts transfer agent and registrar services for other non-traded REITs sponsored by SRA. Fees paid to our Transfer Agent are based on a fixed quarterly fee, one-time account setup fees, monthly open account fees and fees for investor inquiries. In addition, we will reimburse our Transfer Agent for all reasonable expenses or other changes incurred by it in connection with the provision of its services to us, and we will pay our Transfer Agent fees for any additional services we may request from time to time, in accordance with its rates then in effect. Upon the request of our Transfer Agent, we may also advance payment for substantial reasonable out-of-pocket expenditures to be incurred by it. The initial term of the transfer agent agreement is three years, which term will be automatically renewed for one year successive terms, but either party may terminate the transfer agent agreement upon 90 days’ prior written notice. In the event that we terminate the transfer agent agreement, other than for cause, we will pay our transfer agent all amounts that would have otherwise accrued during the remaining term of the transfer agent agreement; provided, however, that when calculating the remaining months in the term for such purposes, such term is deemed to be a 12 month period starting from the date of the most recent annual anniversary date. Property Management Agreements As a result of the Self Administration Transaction, we now perform property management services on our own behalf. Through June 28, 2019, pursuant to the property management agreements, our Former External Property Managers received: (i) a monthly management fee for each property equal to the greater of $3,000 or 6% of the gross revenues from the properties plus reimbursement of the property manager’s costs of managing the properties and (ii) a construction management fee equal to 5% of the cost of construction or capital improvement work in excess of $10,000. In addition, we had agreed with our Former External Property Managers or an affiliate to share equally in the net revenue attributable to the sale of tenant insurance, protection plans, or other indemnity plans at our properties. With respect to each new property we acquired for which we entered into a property management agreement with our Former External Property Managers we paid our Former External Property Managers a one-time start-up fee in the amount of $3,750. Our self storage properties located in Canada were subject to separate property management agreements with our Former External Property Managers on terms substantially the same as the amended property management agreements described above. All of our properties in the United States and Canada are operated under the “SmartStop® Self Storage” brand, which as a result of the Self Administration Transaction we now own. Pursuant to the terms of the agreements described above, the following table summarizes related party costs incurred and paid by us for the years ended December 31, 2019 and 2020, as well as any related amounts payable as of December 31, 2019 and 2020: Year Ended December 31, 2019 Year Ended December 31, 2020 Incurred Paid Payable Incurred Paid Payable Expensed Operating expenses $ 975,985 $ 1,185,370 $ — $ — $ — $ — Transfer Agent fees 324,943 374,404 — 525,108 489,108 36,000 Asset management fees 3,622,558 3,622,558 — — — — Property management fees 2,983,111 2,983,111 — — — — Acquisition expenses 84,061 84,061 — — — — Capitalized Acquisition costs 235,932 235,932 — — — — Self Administration Transaction working capital true-up 493,785 493,785 — — — — Additional paid-in capital Stockholder servicing fee (1) — 667,651 1,277,340 — 645,911 631,429 Total $ 8,720,375 $ 9,646,872 $ 1,277,340 $ 525,108 $ 1,135,019 $ 667,429 (1) th Please see Note 3 – Real Estate Facilities and Note 4 – Self Administration Transaction for detail regarding additional related party transactions. Tenant Programs W e may offer a tenant insurance plan, tenant protection plan or similar program (collectively “Tenant Programs”) to customers at our properties. We and an affiliate of our Former External Property Manager previously agreed to transfer our respective rights in such Tenant Programs revenue to a joint venture owned 50% by our TRS subsidiary and, through the date of the Self Administration Transaction, 50% by our Former External Property Manager’s affiliate (the “Former PM Affiliate”). Under the terms of the joint venture agreement, the TRS received of the net economics generated from such Tenant Programs and the Former PM Affiliate received the other of such net economics shared equally in the net revenue attributable to the sale of Tenant Programs at the properties we acquired in the SSGT Mergers on substantially similar terms as set forth above. Storage Auction Program In connection with the Self Administration Transaction we now own a minority interest in a company that owns 50% of an online auction company (the “Auction Company”) that serves as a web portal for self storage companies to post their auctions for the contents of abandoned storage units online instead of using live auctions conducted at the self storage facilities. The Auction Company receives a service fee for such services. During the years ended December 31, 2020, 2019 and 2018 we paid approximately $44,000, $45,000, and $43,000, respectively, in fees to the Auction Company related to our properties. Our properties receive the proceeds from such online auctions Acquisition of Self Storage Platform from SmartStop Asset Management, LLC and Other Transactions As a result of the Self Administration Transaction, the advisor and property manager entities of SST IV and SSGT II, became our indirect subsidiaries. As a result, we are entitled to receive various fees and expense reimbursements under the terms of the SST IV and SSGT II advisory and property management agreements as described below. Investment in Managed REIT On September 21, 2020, a wholly owned subsidiary of our Operating Partnership (the “Preferred Investor”), entered into a preferred unit purchase agreement (the “SSGT II Unit Purchase Agreement”) with SS Growth Operating Partnership II, L.P. (the “SSGT II OP”) and SSGT II. Pursuant to the terms of the SSGT II Unit Purchase Agreement, the Preferred Investor agreed to purchase, in one or more tranches, up to 1.6 million units of limited partnership interest in SSGT II OP (the “SSGT II Preferred Units”) for an aggregate of up to $40 million (the “SSGT II Investment”). Upon the closing of each tranche of the SSGT II Investment, the Preferred Investor will be due an investment fee equal to 1% of the investment amount of such tranche. The Preferred Investor will receive distributions, payable monthly in arrears, at a rate of 7.25% per annum from the date of investment until 180 days after the date of investment, 8.25% per annum from 181 days after the date of investment until 360 days after the date of investment, and 9.25% per annum thereafter (collectively, the “Pay Rate”). The proceeds of the SSGT II Investment may be used by SSGT II OP to finance self-storage acquisition, development, and improvement activities, and working capital or other general partnership purposes. Each SSGT II Preferred Unit has a liquidation preference of $25.00, plus all accumulated and unpaid distributions. The foregoing distributions shall be payable monthly, and calculated on an actual/360 day basis, and any unpaid distributions shall accrue at the applicable Pay Rate. On September 21, 2020, October 29, 2020, and November 4, 2020, the Preferred Investor invested approximately $6.5 million, $13 million, and $13 million, respectively, in the SSGT II Operating Partnership. On November 12, 2020, SSGT II redeemed $19 million of our SSGT II Preferred Units, reducing our investment in SSGT II Preferred Units to $13.5 million. Such investment is included in investments in and advances to Managed REITs in our consolidated balance sheets. As of December 31, 2020, we were potentially required to purchase an additional $7.5 million in SSGT II Preferred Units. For the year ended December 31, 2020, we recorded income related to the SSGT II Preferred Units, totaling approximately $570,000 which is recorded within the Other line item in our consolidated statements of operations. On January 21, 2021, SSGT II redeemed the remaining $13.5 million of our outstanding SSGT II Preferred Units. Advisory Agreement Fees Our indirect subsidiaries, Strategic Storage Advisor IV, LLC, the advisor to SST IV (the “SST IV Advisor”), and SS Growth Advisor II, LLC, the advisor to SSGT II (the “SSGT II Advisor”), are entitled to receive various fees and expense reimbursements under the terms of the SST IV and SSGT II advisory agreements. SST IV Advisory Agreement The SST IV Advisor provided acquisition and advisory services to SST IV pursuant to an advisory agreement (the “SST IV Advisory Agreement”) to SST IV up until the SST IV Merger on March 17, 2021. SST IV was required to reimburse the SST IV Advisor for organization and offering costs under the SST IV Advisory Agreement; however, the SST IV Advisor funds, and was not reimbursed for 1.15% of the gross offering proceeds from the sale of class W shares sold in the SST IV offering. Such amounts for the years ended December 31, 2020, and 2019, totaled approximately $25,000, and $41,000, respectively. The SST IV Advisor was required to reimburse SST IV within 60 days after the end of the month in which the SST IV public offering terminated to the extent SST IV paid or reimbursed organization and offering costs (excluding sales commissions and dealer manager fees) in excess of 3.5% of the gross offering proceeds from the SST IV offering. The SST IV Advisory Agreement also required the SST IV Advisor to reimburse SST IV to the extent that offering expenses, including sales commissions, dealer manager fees and organization and offering expenses, are in excess of 15% of gross proceeds from the SST IV offering. Effective as of April 30, 2020, SST IV suspended its offering due to various factors, including the uncertainty relating to the ongoing COVID-19 outbreak and its potential economic impact, the status of fundraising in the non-traded REIT industry due to such uncertainty and the termination of their dealer manager agreement. SST IV’s public offering terminated on September 11, 2020. Subsequent to the termination of SST IV’s primary offering, SST IV determined that total organization and offering costs did not exceed 3.5% of the gross proceeds received from its primary offering, and thus we were not required to reimburse SST IV. Additionally, SST IV determined that total organization and offering costs did not exceed 15% of the gross proceeds received in its primary offering, and thus we will not be required to reimburse SST IV for any excess offering costs. The SST IV Advisor also received a monthly asset management fee equal to 0.0833%, which is one-twelfth of 1%, of SST IV’s aggregate asset value, as defined. The SST IV Advisor was potentially also entitled to various subordinated distributions under SST IV’s operating partnership agreement pursuant to the special limited partnership interest and its cash flow participation distribution rights if SST IV (1) listed its shares of common stock on a national exchange, (2) terminated the SST IV Advisory Agreement, (3) liquidated its portfolio, or (4) entered into an Extraordinary Transaction, as defined in the SST IV operating partnership agreement. The SST IV Advisory Agreement provided for reimbursement of the SST IV Advisor’s direct and indirect costs of providing administrative and management services to SST IV. The SST IV Advisor was required to pay or reimburse SST IV the amount by which SST IV’s aggregate annual operating expenses, as defined, exceed the greater of 2% of SST IV’s average invested assets or 25% of SST IV’s net income, as defined, unless a majority of SST IV’s independent directors determine that such excess expenses were justified based on unusual and non-recurring factors. Through the period ended December 31, 2020, no such amounts have been required to be reimbursed by the SST IV Advisor. Effective March 17, 2021, in connection with the SST IV Merger, the SST IV Advisory Agreement was terminated and none of the aforementioned subordinated distributions or fees were paid. SSGT II Advisory Agreement The SSGT II Advisor provides acquisition and advisory services to SSGT II pursuant to an advisory agreement (the “SSGT II Advisory Agreement”). In connection with the SSGT II private placement offering, SSGT II is required to reimburse the SSGT II Advisor for organization and offering costs from the SSGT II private offering pursuant to the SSGT II Advisory Agreement. Effective as of April 30, 2020, SSGT II suspended their offering due to various factors, including the uncertainty relating to the ongoing COVID-19 outbreak and its potential economic impact, the status of fundraising in the non-traded REIT industry due to such uncertainty and the termination of their dealer manager agreement. The SSGT II Advisor receives a monthly asset management fee equal to 0.1042%, which is one-twelfth of 1.25%, of SSGT II’s aggregate asset value, as defined. The SSGT II Advisor may also be potentially entitled to various subordinated distributions under SSGT II’s operating partnership agreement pursuant to the special limited partnership interest and its cash flow participation distribution rights. So long as the SSGT II Advisory Agreement has not been terminated (including by means of non-renewal), SSGT II is required to pay the SSGT II Advisor a distribution from its operating partnership (other than net sale proceeds), pursuant to a special limited partnership interest, equal to 10.0% of any amount distributed to stockholders in excess of the amount required to provide stockholders with an annual aggregate distribution equal to 5.0% (reflective of the weighted average purchase price per share), cumulative within the subject calendar year (as adjusted for partial periods outstanding). Such distribution will be reconciled and paid annually. The cash flow participation distribution may be payable in cash or operating partnership units (or any combination thereof), at the election of the SSGT II Advisor. The SSGT II Advisor may also be potentially entitled to various subordinated distributions under SSGT II’s operating partnership agreement if SSGT II (1) lists its shares of common stock on a national exchange, (2) terminates the SSGT II Advisory Agreement, (3) liquidates its portfolio, or (4) merges with another entity or enters into an Extraordinary Transaction, as defined in the SSGT II operating partnership agreement. The SSGT II Advisory Agreement provides for reimbursement of the SSGT II Advisor’s direct and indirect costs of providing administrative and management services to SSGT II. Managed REIT Property Management Agreements Our indirect subsidiaries, Strategic Storage Property Management IV, LLC and SS Growth Property Management II, LLC (collectively the “Managed REITs Property Managers”), are entitled to receive fees for their services in managing the properties owned by the Managed REITs pursuant to property management agreements entered into between the owner of the property and the applicable Managed REIT’s Property Manager. The Managed REITs’ Property Managers will receive a property management fee equal to 6% of the gross revenues from the properties, generally subject to a monthly minimum of $3,000 per property, plus reimbursement of the costs of managing the properties, and a one-time fee of $3,750 for each property acquired that would be managed by the Managed REITs’ Property Managers. Reimbursable costs and expenses include wages and salaries and other expenses of employees engaged in operating, managing and maintaining such properties. Pursuant to the property management agreements, we through our Operating Partnership employ the on-site staff for the Managed REITs’ properties. The SST IV property manager will be entitled to a construction management fee equal to 5% of the cost of a related construction or capital improvement work project in excess of $10,000. Effective March 17, 2021, in connection with the SST IV Merger, the SST IV property management contracts were terminated. Summary of Fees and Revenue Related to the Managed REITs Pursuant to the terms of the various agreements described above for the Managed REITs, the following summarizes the related party fees for the years ended December 31, 2020 and 2019: Managed REIT Platform Revenues Year Ended December 31, 2020 Year Ended December 31, 2019 Advisory agreement – SST IV (1) $ 3,211,661 $ 1,153,137 Advisory agreement – SSGT II 1,210,529 310,786 Property management agreement – SST IV (1) 1,429,632 602,162 Property management agreement – SSGT II 371,751 91,594 Tenant Program revenue – SST IV (1) 893,315 254,148 Tenant Program revenue – SSGT II 257,602 37,269 Other Managed REIT revenue (2) 674,140 619,210 Total $ 8,048,630 $ 3,068,306 (1) On March 17, 2021, we acquired SST IV. Please see Note 16 – Subsequent Events for additional information. (2) Such revenues primarily includes construction management, development fees, and other miscellaneous revenues. Reimbursable costs from Managed REITs includes reimbursement of both the SST IV and SSGT II Advisors’ direct and indirect costs of providing administrative and management services to the Managed REITs. Additionally, reimbursable costs includes reimbursement pursuant to the property management agreements for reimbursement of the costs of managing the Managed REITs’ properties, including wages and salaries and other expenses of employees engaged in operating, managing and maintaining such properties. As of December 31, 2020 and 2019 we had receivables due from the Managed REITs totaling approximately $0.6 million, and $0.3 million, respectively. Such amounts are included in investments in and advances to the Managed REITs line-item in our consolidated balance sheets. Such amounts included unpaid amounts relative to the above table, in addition to other direct routine expenditures of the Managed REITs that we directly funded. Administrative Services Agreement For the year ended December 31, 2020, and 2019, we incurred fees payable to SAM under the Administrative Services Agreement of approximately $1.9 million, and $2.1 million, respectively, which were recorded in the Managed REIT Platform expenses line item in our consolidated statement of operations. We recorded reimbursements from SAM of approximately $0.4 million and $0.1 million during the years ended December 31, 2020 and 2019, respectively, related to services provided to SAM as well as reimbursements of rent and overhead for the portion of the Ladera Office occupied by SAM, which were included in Managed REIT Platform revenue in our consolidated statement of operations. As of December 31, 2020, a receivable of approximately $50,000 was due from SAM related to the Administrative Services Agreement and included in the other assets line in our consolidated balance sheet. As of December 31, 2019, a payable of approximately $345,000 was due to SAM related to the Administrative Services Agreement and included in the due to affiliates line in our consolidated balance sheet.

Equity Based Compensation

Equity Based Compensation	12 Months Ended
	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity Based Compensation	Note 12. Equity Based Compensation We issue equity based compensation pursuant to the employee and director long-term incentive plan of SmartStop Self Storage REIT, Inc. (the “Plan”). Pursuant to the Plan, we are able to issue various forms of equity based compensation. Through December 31, 2020, we have issued equity based awards in two forms: (1) restricted stock awards consisting of shares of our common stock and (2) long-term incentive plan units of our Operating Partnership (“LTIP Units”). Through March 2020, we had only issued restricted stock, which shares are subject to a time based vesting period. In April 2020 t The fair value of the restricted stock and the LTIP Units was determined based on an estimated value per share, adjusted for an illiquidity discount due to the illiquid nature of the underlying equity. The fair value of the LTIP Units was further adjusted by applying an additional discount as the LTIP Units are not initially economically equivalent to our restricted stock. For the performance based awards, a fair value was determined for each performance ranking scenario, with stock compensation expense recorded using the fair value of the scenario determined to be probable of achievement. Time Based Awards We have granted various time based awards, which generally vest ratably over either one, three, or four years commencing in the year of grant, subject to the recipient’s continued employment or service through the applicable vesting date. All grants of time based restricted stock have limitations on transferability during the vesting period, and the grantee does not have the ability to vote any unvested shares. the restriction on transfer applies only to the unvested portion of the restricted stock. With respect to grants of time based restricted stock made to our executive officers in 2020, distributions began to accrue effective January 1, 2020 and are payable as distributions are paid on our Class A Shares without regard to whether the underlying restricted shares have vested. With respect to all other outstanding grants of time based restricted stock, distributions accrue on non-vested shares granted and are paid when the underlying restricted shares vest. Holders of time based LTIP Units receive allocations of profits and losses with respect to the LTIP Units as of the effective date, distributions from the effective date in an amount equivalent to the distributions declared and paid on our Class A Shares, and the same voting rights as holders of common units, voting as a class with each LTIP Unit holder having one vote per LTIP Unit held. Prior to vesting, time based LTIP Units generally may not be transferred, other than by laws of descent and distribution. The following table summarizes the activity related to our time based awards: Restricted Stock LTIPs Time Based Award Grants Shares Weighted-Average Grant-Date Fair Value Units Weighted-Average Grant-Date Fair Value Unvested at December 31, 2018 21,438 $ 10.38 $ — $ — Granted 251,993 9.48 — — Vested (7,625 ) 10.29 — — Forfeited — — — — Unvested at December 31, 2019 265,806 9.53 — — Granted 72,383 9.78 214,521 9.09 Vested (82,351 ) 9.55 (53,630 ) 9.09 Forfeited (6,567 ) 9.78 — — Unvested at December 31, 2020 249,271 $ 9.58 160,891 $ 9.09 Performance Based Awards With respect to performance based awards, the number of shares of restricted stock granted as of the grant date equaled 100% of the targeted award, whereas the number of LTIP Units granted as of the grant date equaled 200% of the targeted award. The targeted award for each executive was determined and approved by the Compensation Committee of our Board of Directors. The actual number of shares of restricted stock or LTIP Units, as applicable, to be issued upon vesting may range from 0% 200% Recipients of performance based restricted stock accrue distributions during the performance period, and such distributions will only be payable on the date that any such shares of restricted stock vest, based upon the performance level attained. Recipients of performance based LTIP Units are issued LTIP Units at 200% of the targeted award and are entitled to receive distributions and allocations of profits and losses with respect to the performance based LTIP Units as of the effective date of January 1, 2020 in an amount equal to 10% of the distributions and allocations available to such LTIP Units, until the Distribution Participation Date (as defined in the Partnership Agreement). The remaining 90% of distributions will accrue and will be payable on the Distribution Participation Date based upon the performance level attained and number of performance based LTIP Units that vest. Following the Distribution Participation Date, recipients will be entitled to receive the full amount of distributions and allocations of profits and losses with respect to the vested performance-based LTIP Units, such amount being equivalent to distributions declared and paid on our Class A Shares. The following table summarizes our activity related to our performance based awards: Restricted Stock LTIPs Performance Based Award Grants Shares Weighted-Average Grant-Date Fair Value Units Weighted-Average Grant-Date Fair Value Unvested at December 31, 2019 — $ — — $ — Granted 5,752 9.78 130,638 9.09 Vested — — — — Forfeited — — — — Unvested at December 31, 2020 5,752 $ 9.78 130,638 $ 9.09 Holders of performance based restricted stock do not have any rights as a stockholder with respect to the unvested portion of such restricted stock awards. Prior to vesting, shares of performance based restricted stock generally may not be transferred, other than by laws of descent and distribution. Holders of performance based LTIP Units have the same voting rights as holders of common units, voting as a class with each LTIP Unit holder having one vote per LTIP Unit held. Prior to vesting, performance based LTIP Units generally may not be transferred, other than by laws of descent and distribution. LTIP Units are designed to qualify as “profits interests” in the Operating Partnership for federal income tax purposes. The profits interests’ characteristics of the LTIP Units mean that initially they will not be treated as economically equivalent in value to a common unit and the issuance of LTIP Units will not be a taxable event to the Operating Partnership or the recipient. If and when certain events occur pursuant to applicable tax regulations and in accordance with the Partnership Agreement, LTIP Units may become economically equivalent to common units of limited partnership interest of our Operating Partnership on a one-for-one basis. As of December 31, 2020, 5,356,273 shares of stock were available for issuance under the Plan. We recorded approximately $1.6 million of equity based compensation expense in general and administrative expense and approximately $40,000 of equity based compensation expense in property operating expenses, within our consolidated statements of operations for the year ended December 31, 2020. As of December 31, 2020, there was approximately $4.0 million of total unrecognized compensation expense related to non-vested equity awards. Such cost is expected to be recognized over a weighted-average period of approximately 2.5 years.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 13. Commitments and Contingencies Distribution Reinvestment Plan We have adopted an amended and restated distribution reinvestment plan that allows both our Class A and Class T stockholders to have distributions otherwise distributable to them invested in additional shares of our Class A and Class T Shares, respectively. The purchase price per share pursuant to our distribution reinvestment plan is equivalent to the estimated value per share approved by our board of directors and in effect on the date of purchase of shares under the plan. In conjunction with the board of directors’ declaration of a new estimated value per share of our common stock on April 20, 2020, beginning in May 2020, shares sold pursuant to our distribution reinvestment plan are sold at the estimated value per share of $10.40 per Class A Share and Class T Share. On November 30, 2016, we filed with the SEC a Registration Statement on Form S-3, which registered up to an additional $100.9 million in shares under our distribution reinvestment plan (our “DRP Offering”). We may amend or terminate the amended and restated distribution reinvestment plan for any reason at any time upon 10 days’ prior written notice to stockholders. No sales commissions, dealer manager fee, or stockholder servicing fee will be paid on shares sold through the amended and restated distribution reinvestment plan. Through the termination of our Offering on January 9, 2017, we had sold approximately 1.1 million Class A shares and 0.1 million Class T Shares through our original distribution reinvestment plan. As of December 31, 2020, we had sold approximately 5.3 million Class A Shares and approximately 0.8 million Class T Shares through our DRP Offering. Share Redemption Program As described in Note 2 – Redeemable Common Stock, we have an SRP, which is partially suspended. Please refer to Note 2 for additional details. Pursuant to the SRP, we may redeem the shares of stock presented for redemption for cash to the extent that such requests comply with the below terms of our SRP and we have sufficient funds available to fund such redemption. Our board of directors may amend, suspend or terminate the SRP with 30 days’ notice to our stockholders. We may provide this notice by including such information in a Current Report on Form 8-K or in our annual or quarterly reports, all publicly filed with the SEC, or by a separate mailing to our stockholders. On August 20, 2020, our board of directors determined that it would be in the best interests of the Company to amend the terms of the SRP to revise the redemption price per share for all redemptions under the SRP to be equal to the most recently published estimated net asset value per share of the applicable share class (the “SRP Amendment”). Prior to the SRP Amendment, the redemption amount was the lesser of the amount the stockholders paid for their shares or the price per share in the current offering. There are several limitations in addition to those noted above on our ability to redeem shares under the SRP including, but not limited to: • During any calendar year, we will not redeem in excess of 5% of the weighted-average number of shares outstanding during the prior calendar year. • The cash available for redemption is limited to the proceeds from the sale of shares pursuant to our distribution reinvestment plan, less any prior redemptions. • We have no obligation to redeem shares if the redemption would violate the restrictions on distributions under Maryland law, which prohibits distributions that would cause a corporation to fail to meet statutory tests of solvency. For the year ended December 31, 2018, we received redemption requests totaling approximately $8.3 million (approximately 0.9 million shares), approximately $7.0 million of which were fulfilled during year ended December 31, 2018, with the remaining approximately $1.3 million included in accounts payable and accrued liabilities as of December 31, 2018 and fulfilled in January 2019. For the year ended December 31, 2019, we received redemption requests totaling approximately $4.9 million (approximately 0.5 million shares), approximately $4.5 million of which were fulfilled during the year ended December 31, 2019, with the remaining approximately $0.4 million included in accounts payable and accrued liabilities as of December 31, 2019 and fulfilled in January 2020 . For the year ended December 31, 2020, we received redemption requests totaling approximately $2.0 million (approximately 0.2 million shares), approximately $1.3 million of which were fulfilled during the year ended December 31, 2020, with the remaining approximately $0.7 million included in accounts payable and accrued liabilities as of December 31, 2020 and fulfilled in January 2021. Operating Partnership Redemption Rights Generally, the limited partners of our Operating Partnership, excluding any limited partners with respect to their A-2 Units, have the right to cause our Operating Partnership to redeem their limited partnership units for cash equal to the value of an equivalent number of our shares, or, at our option, we may purchase their limited partnership units by issuing one share of our common stock for each limited partnership unit redeemed. These rights may not be exercised under certain circumstances that could cause us to lose our REIT election. Furthermore, limited partners may exercise their redemption rights only after their limited partnership units have been outstanding for one year. Additionally, the Class A-1 Units issued in connection with the Self Administration Transaction are subject to the general restrictions on transfer contained in the Operating Partnership Agreement. Lock-Up Expiration, the Class A-1 Units may not be sold, pledged, or otherwise transferred or encumbered except in certain limited circumstances set forth in the Contribution Agreement. The Class A-1 Units are otherwise entitled to all rights and duties of the Class A limited partnership units in the Operating Partnership, including cash distributions and the allocation of any profits or losses in the Operating Partnership Other Contingencies From time to time, we are party to legal, regulatory and other proceedings that arise in the ordinary course of our business. In accordance with applicable accounting guidance, management accrues an estimated liability when those matters present loss contingencies that are both probable and reasonably estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. We are not aware of any such proceedings of which the outcome is reasonably likely to have a material adverse effect on our results of operations or financial condition.

Declaration of Distributions

Declaration of Distributions	12 Months Ended
	Dec. 31, 2020
Dividends [Abstract]
Declaration of Distributions	Note 14. Declaration of Distributions On December 3, 2020, our board of directors declared a distribution rate for the first quarter of 2021 of $0.00164 per day per share on the outstanding shares of common stock payable to Class A and Class T stockholders of record of such shares as shown on our books at the close of business on each day of the period commencing on January 1, 2021 and ending March 31, 2021. Such distributions payable to each stockholder of record during a month will be paid the following month. On March 3, 2021 , our board of directors declared a distribution rate for the second quarter of 2021 of $0.00164 per day per share on the outstanding shares of common stock payable to Class A and Class T stockholders of record of such shares as shown on our books at the close of business on each day of the period commencing on April 1, 2021 and ending June 30, 2021.

Selected Quarterly Data (Unaudi

Selected Quarterly Data (Unaudited)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Data (Unaudited)	Note 15. Selected Quarterly Data (Unaudited) The following is a summary of quarterly financial information for the years ended December 31, 2020 and 2019: Three months ended March 31, 2020 June 30, 2020 September 30, 2020 December 31, 2020 Total revenues $ 30,298,123 $ 29,469,545 $ 31,363,122 $ 32,893,573 Total operating expenses $ 61,368,274 $ 27,497,027 $ 26,992,137 $ 29,307,135 Operating income (loss) $ (31,070,151 ) $ 1,972,518 $ 4,370,985 $ 3,586,438 Net loss $ (37,743,581 ) $ (7,062,841 ) $ (4,456,497 ) $ (1,943,884 ) Net loss attributable to common stockholders $ (35,073,951 ) $ (8,491,421 ) $ (6,259,114 ) $ (4,529,908 ) Net loss per Class A Share-basic and diluted $ (0.59 ) $ (0.14 ) $ (0.10 ) $ (0.08 ) Net loss per Class T Share-basic and diluted $ (0.59 ) $ (0.14 ) $ (0.10 ) $ (0.08 ) Three months ended March 31, 2019 June 30, 2019 September 30, 2019 December 31, 2019 Total revenues $ 23,883,325 $ 25,980,517 $ 29,588,014 $ 30,076,693 Total operating expenses $ 21,934,203 $ 25,211,611 $ 27,773,486 $ 26,965,933 Operating income $ 1,949,122 $ 768,906 $ 1,814,528 $ 7,055,456 Net loss $ (8,948,317 ) $ (2,283,972 ) $ (9,541,579 ) $ (4,321,670 ) Net loss attributable to common stockholders $ (8,891,558 ) $ (2,212,445 ) $ (8,214,826 ) $ (5,431,504 ) Net loss per Class A Share-basic and diluted $ (0.15 ) $ (0.04 ) $ (0.14 ) $ (0.09 ) Net loss per Class T Share-basic and diluted $ (0.15 ) $ (0.04 ) $ (0.14 ) $ (0.09 )

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Note 16. Subsequent Events Redemption of SSGT II Preferred Equity On January 21, 2021, SSGT II redeemed the remaining $13.5 million of our outstanding SSGT II Preferred Units. SST IV Merger On November 10, 2020, we, SST IV Merger Sub, LLC, a Maryland limited liability company and a wholly-owned subsidiary of ours (“SST IV Merger Sub”), and SST IV entered into an agreement and plan of merger (the “SST IV Merger Agreement”). Pursuant to the terms and conditions set forth in the SST IV Merger Agreement, on March 17, 2021, we acquired SST IV by way of a merger of SST IV with and into our SST IV Merger Sub, with SST IV Merger Sub being the surviving entity (the “SST IV Merger”). At the effective time of the SST IV Merger (the “SST IV Merger Effective Time”), each share of SST IV common stock, par value $0.001 per share (the “SST IV Common Stock”), outstanding immediately prior to the SST IV Merger Effective Time (other than shares owned by SST IV and its subsidiaries or us and our subsidiaries) was automatically converted into the right to receive 2.1875 of our Class A Common Stock (the “SST IV Merger Consideration”), which represents a total transaction value of approximately $380 million (which includes outstanding debt of SST IV assumed or repaid but excludes transaction costs). Immediately prior to the SST IV Merger Effective Time, all shares of SST IV Common Stock that were subject to vesting and other restrictions also became fully vested and converted into the right to receive the SST IV Merger Consideration. As a result of the SST IV Merger, we acquired all of the real estate owned by SST IV, consisting of 24 wholly-owned self storage facilities located across 9 states and 6 self storage real estate joint ventures located in the Greater Toronto Area of Ontario, Canada. The real estate joint ventures consist of three operating properties and three properties in various stages of development. A summary of SST IV’s wholly-owned real estate portfolio is as follows (as of December 31, 2020): State No. of Properties Units (1) Sq. Ft. (net) (2) % of Total Rentable Sq. Ft. Physical Occupancy % (3) Rental Income % (4) Arizona 1 720 79,000 3.9 % 88.8 % 3.0 % California 2 1,620 154,000 7.5 % 78.5 % 6.7 % Florida 5 3,830 519,100 25.4 % 87.7 % 24.9 % North Carolina 2 1,910 176,500 8.6 % 85.8 % 7.9 % New Jersey 1 1,900 158,000 7.7 % 90.5 % 11.0 % Nevada 2 1,220 131,500 6.4 % 91.9 % 8.0 % Texas 8 4,610 605,900 29.7 % 92.3 % 25.3 % Virginia 1 830 71,000 3.5 % 94.9 % 5.2 % Washington 2 1,180 146,000 7.3 % 89.2 % 8.0 % Total 24 17,820 2,041,000 100 % 89.1 % 100 % (1) (2)Includes all rentable square feet, consisting of storage units and parking (approximately 250,000 square feet). (3)Represents the occupied square feet of all facilities SST IV owned in a state divided by total rentable square feet of all the facilities SST IV owned in such state as of December 31, 2020. (4)Represents rental income (excludes administrative fees, late fees, and other ancillary income) for all facilities SST IV owned in a state divided by SST IV’s total rental income for the month ended December 31, 2020. New Credit Facility On March 17, 2021, we, through our Operating Partnership (the “Borrower”), entered into a credit facility with KeyBank, National Association, as administrative agent, KeyBanc Capital Markets, LLC, Wells Fargo Securities, Citibank, N.A., and BMO Capital Markets, as joint book runners and joint lead arrangers, and certain other lenders party thereto (the “Credit Facility”). The initial aggregate amount of the Credit Facility is $500 million, which consists of a $250 million revolving credit facility (the “Credit Facility Revolver”) and a $250 million term loan (the “Credit Facility Term Loan”). The Borrower has the right to increase the amount available under the Credit Facility by an additional $350 million, for a total aggregate amount of $850 million, subject to certain conditions. The Credit Facility also includes sublimits of (a) up to $25 million for letters of credit and (b) up to $25 million for swingline loans; each of these sublimits are part of, and not in addition to, the amounts available under the Credit Facility Revolver. Borrowings under the Credit Facility may be in either U.S. dollars (each, a “US Borrowing”) or Canadian dollars (each, a “CAD Borrowing”). Upon the closing of the Credit Facility, the Borrower immediately made the following drawdowns: (i) under the Credit Facility Revolver (A) $199 million in US Borrowings and (B) CAD$2.5 million in CAD Borrowings (approximately $2 million equivalent in U.S. dollars), and (ii) under the Credit Facility Term Loan (A) $150 million in US Borrowings and (B) CAD$124.7 million in CAD Borrowings (approximately $100 million equivalent in U.S. dollars), for an aggregate amount of approximately $451 million. We used the proceeds primarily to pay off certain existing indebtedness as well as indebtedness of SST IV. The maturity date of the Credit Facility Revolver is March 17, 2024, subject to a one-year Amounts borrowed under the Credit Facility Revolver and Credit Facility Term Loan bear interest based on both the type of borrowing (either ABR Loans or Eurodollar Loans, each as defined in the Credit Facility), as well as the currency of the borrowing. ABR Loans bear interest at the lesser of (x) the alternate base rate plus the applicable rate, or (y) the maximum rate. Eurodollar Loans bear interest at the lesser of (a) the adjusted LIBO rate or CDOR rate (depending on whether the loan is a US Borrowing or a CAD Borrowing, respectively) for the interest period in effect plus the applicable rate, or (b) the maximum rate. The corresponding applicable rate varies depending on the type of borrowing and our consolidated leverage ratio. Initial advances under the Credit Facility Term Loan bear interest at 195 basis points over 30-day LIBOR or 30-day CDOR, while initial advances under the Credit Facility Revolver bear interest at 200 basis points over 30-day LIBOR or 30-day CDOR. The Credit Facility is also subject to an annual unused fee based upon the average amount of the unused portion of the Credit Facility Revolver, which varies from 15 bps to 25 bps, depending on the size of the unused amount, as well as whether a Security Interest Termination Event (defined below) has occurred. The Credit Facility is fully recourse, jointly and severally, to us, our Operating Partnership, and certain of our subsidiaries (the “Subsidiary Guarantors”). In connection with this, we, our Operating Partnership, and our Subsidiary Guarantors executed guarantees in favor of the lenders. The Credit Facility is also cross-defaulted to (i) any recourse debt of ours, our Operating Partnership, or the Subsidiary Guarantors and (ii) any non-recourse debt of ours, our Operating Partnership, or the Subsidiary Guarantors of at least $75 million. The Credit Facility is initially secured by a pledge of equity interests in the Subsidiary Guarantors. However, upon the achievement of certain security interest termination conditions, the pledges shall be released and the Credit Facility shall become unsecured (the “Security Interest Termination Event”). The Security Interest Termination Event occurs at the Borrower’s election, once the Borrower satisfies the following security interest termination conditions: (i) a fixed charge coverage ratio of no less than 1.50:1.00; (ii) an unsecured interest coverage ratio of not less than 2.00:1.00; (iii) a consolidated capitalization rate leverage ratio of not greater than 60%; and (iv) a secured debt ratio of no greater than 40%. Following the occurrence of the Security Interest Termination Event, certain terms and conditions of the Credit Facility are modified, including, but not limited to: (i) in certain circumstances, a reduction in the applicable interest rate under the Credit Facility, (ii) the modification or addition of certain financial covenants, (iii) the addition of a floor of at least $25 million for any cross-defaulted recourse debt of ours, our Operating Partnership, or any Subsidiary Guarantor, and (iv) in certain circumstances, a reduction in the annual unused fee for the Credit Facility Revolver. The Credit Facility contains certain customary representations and warranties, affirmative, negative and financial covenants, borrowing conditions, and events of default. In particular, the financial covenants imposed include: a maximum leverage ratio, a minimum fixed charge coverage ratio, a minimum tangible net worth, certain limits on both secured debt and secured recourse debt, certain payout ratios of dividends paid to core funds from operations, limits on unhedged variable rate debt, and minimum liquidity. If an event of default occurs and continues, the Borrower is subject to certain actions by the administrative agent, including, without limitation, the acceleration of repayment of all amounts outstanding under the Credit Facility. Additionally, we obtained the rights to acquire, upon its completion, a self storage property that is being developed in San Gabriel, California. We also indirectly assumed three outstanding loans in connection with the SST IV Merger. The first loan is a mortgage loan with TCF National Bank, as lender, and certain property owning subsidiaries, as borrowers, as amended, in the amount of approximately $40.7 million (the “TCF Loan”). The second loan is a CMBS loan with KeyBank National Association, as the initial lender, and certain property owning subsidiaries, as borrowers, in the amount of approximately $40.5 million (the “T4 CMBS Loan”). The third loan is an arrangement that SST IV entered with SmartCentres Storage Finance LP, as lender, in the amount of up to approximately $68 million CAD (the “SmartCentres Loan”). The borrowers under the SmartCentres Loan are the joint venture entities in which we now hold a 50% limited partnership interest with subsidiaries of SmartCentres (the “JV Partnerships”). In connection with the foregoing assumptions, we became a non-recourse carve-out guarantor under the TCF Loan and the T4 CMBS Loan. In addition, we also became a recourse guarantor for (i) 25% of the TCF Loan, with such percentage decreasing in certain situations and (ii) 50% of the SmartCentres Loan. Strategic Storage Trust VI, Inc. We, through our subsidiary, SRA, now serve as sponsor for Strategic Storage Trust VI, Inc. (“SST VI”), a private REIT focused on acquiring income and growth self storage properties. On March 10, 2021, SmartStop OP made an investment of $5.0 million in Strategic Storage Operating Partnership VI, L.P. (“SST VI OP”), the operating partnership of SST VI, in exchange for common units of limited partnership interest in SST VI OP. On March 11, 2021, SST VI OP, through a wholly-owned subsidiary, acquired its first self storage facility in Phoenix, Arizona for approximately $16 million. SST VI commenced its private offering in the first quarter of 2021. Given our current level of ownership, we initially expect to consolidate SST VI in our financial statements until the equity raised in SST VI’s offering increases the level of outside ownership. In connection with SST VI’s acquisition of the Phoenix property, we provided a $3.5 million mezzanine loan to a wholly-owned subsidiary of SST VI’s operating partnership with an initial interest rate of 8.5% and term of six months; as well as a 180 day extension option which, if exercised, would increase the interest rate to 9.25%. In addition to the aforementioned mezzanine loan, SST VI financed the acquisition, in part, by obtaining a third party mortgage loan on the property of approximately $9 million, which had an initial interest rate of 3.5%, and a three year term, with two one year extension options. Amendment to the Operating Partnership Agreement On March 24, 2021, we, as the general partner of our Operating Partnership, entered into Amendment No. 3 (the “Amendment”) to the Third Amended and Restated Limited Partnership Agreement of the Operating Partnership dated June 28, 2019, as amended to date (the “Partnership Agreement”), to make certain revisions to Exhibit D (Description of Class A-2 Units) to the Partnership Agreement. The Amendment (i) revises the definition of “AUM” in connection with the earnout of the Class A-2 Units so that it (A) includes assets acquired by us and our affiliates and (B) includes 100% of any joint venture assets, rather than a pro rata percentage, and (ii) clarifies that the Class A-2 Units may be transferred after the two-year holding period. On March 24, 2021, 1,094,434 Class A-2 Units held by an affiliate of SAM, were converted into 1,121,795 Class A-1 Units pursuant to the achievement of the first tier of earnout consideration received in connection with the self administration transaction entered into on June 28, 2019. Pursuant to the Partnership Agreement, Class A-1 Units of the Operating Partnership are exchangeable for Class A common stock.

Schedule III Real Estate and Ac

Schedule III Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2020
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Schedule III Real Estate and Accumulated Depreciation	SMARTSTOP SELF STORAGE REIT, INC. AND SUBSIDIARIES SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION December 31, 2020 Initial Cost to Company Gross Carrying Amount at December 31, 2020 Description ST Encumbrance Land Building and Improvements Total Cost Capitalized Subsequent to Acquisition Land Building and Improvements Total (1) Accumulated Depreciation Date of Construction Date Acquired Morrisville NC $ 3,109,374 $ 531,000 $ 1,891,000 $ 2,422,000 $ 154,693 $ 531,000 $ 2,045,693 $ 2,576,693 $ 483,118 2004 11/3/2014 Cary NC 5,289,973 1,064,000 3,301,000 4,365,000 149,566 1,064,000 3,450,566 4,514,566 781,073 1998/2005/2006 11/3/2014 Raleigh NC 4,482,344 1,186,000 2,540,000 3,726,000 281,007 1,186,000 2,821,007 4,007,007 749,096 1999 11/3/2014 Myrtle Beach I SC 8,606,670 1,482,000 4,476,000 5,958,000 399,692 1,482,000 4,875,692 6,357,692 1,157,451 1998/2005-2007 11/3/2014 Myrtle Beach II SC 6,970,422 1,690,000 3,654,000 5,344,000 268,904 1,690,000 3,922,904 5,612,904 962,322 1999/2006 11/3/2014 Whittier CA 4,602,761 2,730,000 2,916,875 5,646,875 556,152 2,730,000 3,473,027 6,203,027 878,394 1989 2/19/2015 La Verne CA 3,167,492 1,950,000 2,036,875 3,986,875 315,625 1,950,000 2,352,500 4,302,500 637,553 1986 1/23/2015 Santa Ana CA 5,196,666 4,890,000 4,006,875 8,896,875 432,696 4,890,000 4,439,571 9,329,571 1,148,412 1978 2/5/2015 Upland CA 3,612,920 2,950,000 3,016,875 5,966,875 474,795 2,950,000 3,491,670 6,441,670 934,042 1979 1/29/2015 La Habra CA 3,662,412 2,060,000 2,356,875 4,416,875 358,283 2,060,000 2,715,158 4,775,158 650,124 1981 2/5/2015 Monterey Park CA 2,573,587 2,020,000 2,216,875 4,236,875 265,392 2,020,000 2,482,267 4,502,267 592,000 1987 2/5/2015 Huntington Beach CA 6,978,379 5,460,000 4,856,875 10,316,875 434,564 5,460,000 5,291,439 10,751,439 1,291,699 1986 2/5/2015 Chico CA 1,163,063 400,000 1,336,875 1,736,875 301,646 400,000 1,638,521 2,038,521 424,851 1984 1/23/2015 Lancaster CA 1,682,730 200,000 1,516,875 1,716,875 388,790 200,000 1,905,665 2,105,665 535,853 1980 1/29/2015 Riverside CA 2,326,127 370,000 2,326,875 2,696,875 556,660 370,000 2,883,535 3,253,535 702,132 1985 1/23/2015 Fairfield CA 2,746,809 730,000 2,946,875 3,676,875 219,987 730,000 3,166,862 3,896,862 752,721 1984 1/23/2015 Lompoc CA 2,821,047 1,000,000 2,746,875 3,746,875 196,871 1,000,000 2,943,746 3,943,746 700,266 1982 2/5/2015 Santa Rosa CA 7,324,823 3,150,000 6,716,875 9,866,875 570,137 3,150,000 7,287,012 10,437,012 1,713,660 1979-1981 1/29/2015 Vallejo CA 8,237,821 990,000 3,946,875 4,936,875 300,667 990,000 4,247,542 5,237,542 1,005,091 1981 1/29/2015 Federal Heights CO 2,375,619 1,100,000 3,346,875 4,446,875 384,145 1,100,000 3,731,020 4,831,020 1,028,501 1983 1/29/2015 Aurora CO 4,800,729 810,000 5,906,875 6,716,875 623,921 810,000 6,530,796 7,340,796 1,552,900 1984 2/5/2015 Littleton CO 2,177,650 1,680,000 2,456,875 4,136,875 325,375 1,680,000 2,782,250 4,462,250 704,722 1985 1/23/2015 Bloomingdale IL 2,375,619 810,000 3,856,874 4,666,874 438,757 810,000 4,295,631 5,105,631 988,929 1987 2/19/2015 Crestwood IL 1,633,238 250,000 2,096,875 2,346,875 400,190 250,000 2,497,065 2,747,065 620,585 1987 1/23/2015 Forestville MD 3,464,444 1,940,000 4,346,875 6,286,875 1,134,128 1,940,000 5,481,003 7,421,003 1,467,936 1988 1/23/2015 Warren I MI 1,954,936 230,000 2,966,875 3,196,875 540,970 230,000 3,507,845 3,737,845 826,849 1996 5/8/2015 Sterling Heights MI 2,301,381 250,000 3,286,875 3,536,875 822,804 250,000 4,109,679 4,359,679 925,909 1977 5/21/2015 Troy MI 3,414,952 240,000 4,176,875 4,416,875 312,636 240,000 4,489,511 4,729,511 1,035,935 1988 5/8/2015 Warren II MI 2,251,889 240,000 3,066,875 3,306,875 676,260 240,000 3,743,135 3,983,135 930,488 1987 5/8/2015 Beverly NJ 1,385,778 400,000 1,696,875 2,096,875 335,408 400,000 2,032,283 2,432,283 440,895 1988 5/28/2015 Everett WA 2,722,063 2,010,000 2,956,875 4,966,875 639,767 2,010,000 3,596,642 5,606,642 846,506 1986 2/5/2015 Foley AL 4,132,587 1,839,000 5,717,000 7,556,000 794,161 1,839,000 6,511,161 8,350,161 1,423,786 1985/1996/2006 9/11/2015 Tampa FL 1,633,238 718,244 2,257,471 2,975,715 584,751 718,244 2,842,222 3,560,466 598,303 1985 11/3/2015 Boynton Beach FL 8,166,188 1,983,491 15,232,817 17,216,308 497,684 1,983,491 15,730,501 17,713,992 2,398,657 2004 1/7/2016 Lancaster II CA 2,350,873 670,392 3,711,424 4,381,816 284,574 670,392 3,995,998 4,666,390 787,497 1991 1/11/2016 Milton (2) ONT 6,068,742 1,452,870 7,929,810 9,382,680 1,185,101 (3) 1,584,505 8,983,276 10,567,781 1,346,290 2006 2/11/2016 Burlington I (2) ONT 9,674,806 3,293,267 10,278,861 13,572,128 1,605,918 (3) 3,591,649 11,586,397 15,178,046 1,754,755 2011 2/11/2016 Oakville I (2) ONT 6,684,411 2,655,215 13,072,458 15,727,673 3,440,072 (3) 2,895,786 16,271,959 19,167,745 2,510,039 2016 2/11/2016 Oakville II (2) ONT 7,827,797 2,983,307 9,346,283 12,329,590 1,082,649 (3) 3,164,156 10,248,083 13,412,239 1,596,679 2004 2/29/2016 Burlington II (2) ONT 4,837,403 2,944,035 5,125,839 8,069,874 707,348 (3) 3,122,504 5,654,718 8,777,222 875,180 2008 2/29/2016 Xenia OH 2,705,559 275,493 2,664,693 2,940,186 109,253 275,493 2,773,946 3,049,439 515,997 2003 4/20/2016 Sidney OH 1,817,166 255,246 1,806,349 2,061,595 186,550 255,246 1,992,899 2,248,145 541,954 2003 4/20/2016 Troy OH 2,988,229 150,666 2,596,010 2,746,676 147,296 150,666 2,743,306 2,893,972 578,732 2003 4/20/2016 Greenville OH 1,897,929 82,598 1,909,466 1,992,064 146,559 82,598 2,056,025 2,138,623 373,694 2003 4/20/2016 Washington Court House OH 2,947,848 255,456 1,882,203 2,137,659 133,867 255,456 2,016,070 2,271,526 377,892 2003 4/20/2016 Richmond IN 2,988,229 223,159 2,944,379 3,167,538 173,202 223,159 3,117,581 3,340,740 600,924 2003 4/20/2016 Connersville IN 1,857,548 155,533 1,652,290 1,807,823 103,000 155,533 1,755,290 1,910,823 339,460 2003 4/20/2016 Port St. Lucie I FL 7,430,191 2,589,781 6,339,578 8,929,359 211,938 2,589,781 6,551,516 9,141,297 1,089,677 1999 4/29/2016 Sacramento CA 8,157,058 1,205,209 6,616,767 7,821,976 212,938 1,205,209 6,829,705 8,034,914 1,038,002 2006 5/9/2016 Oakland CA 13,325,887 5,711,189 6,902,446 12,613,635 219,600 5,711,189 7,122,046 12,833,235 1,072,552 1979 5/18/2016 Concord CA 32,628,233 19,090,003 17,202,868 36,292,871 387,750 19,090,003 17,590,618 36,680,621 2,743,596 1988/1998 5/18/2016 Pompano Beach FL 8,590,310 3,947,715 16,656,002 20,603,717 246,372 3,947,715 16,902,374 20,850,089 2,314,967 1979 6/1/2016 Lake Worth FL 10,308,370 12,108,208 10,804,173 22,912,381 320,345 12,108,208 11,124,518 23,232,726 2,104,765 1998/2003 6/1/2016 Jupiter FL 11,568,280 16,029,881 10,556,833 26,586,714 299,814 16,029,881 10,856,647 26,886,528 1,720,706 1992/2012 6/1/2016 Royal Palm Beach FL 9,678,415 11,425,394 13,275,322 24,700,716 187,370 11,425,394 13,462,692 24,888,086 2,404,301 2001/2003 6/1/2016 Port St. Lucie II FL 7,264,947 5,130,621 8,410,474 13,541,095 345,056 5,130,621 8,755,530 13,886,151 1,477,030 2002 6/1/2016 Wellington FL 14,456,568 10,233,511 11,662,801 21,896,312 137,696 10,233,511 11,800,497 22,034,008 1,747,065 2005 6/1/2016 Doral FL 14,133,517 11,335,658 11,485,045 22,820,703 309,000 11,335,658 11,794,045 23,129,703 1,775,725 1998 6/1/2016 Plantation FL 15,969,792 12,989,079 19,224,919 32,213,998 460,227 12,989,079 19,685,146 32,674,225 2,896,603 2002/2012 6/1/2016 Naples FL 14,214,280 11,789,085 12,771,305 24,560,390 255,610 11,789,085 13,026,915 24,816,000 1,902,481 2002 6/1/2016 Delray FL 11,854,625 17,096,692 12,983,627 30,080,319 241,033 17,096,692 13,224,660 30,321,352 1,991,270 2003 6/1/2016 Baltimore MD 16,293,926 3,897,872 22,427,843 26,325,715 469,901 3,897,872 22,897,744 26,795,616 3,535,225 1990/2014 6/1/2016 Sonoma CA 6,283,197 3,468,153 3,679,939 7,148,092 155,859 3,468,153 3,835,798 7,303,951 612,444 1984 6/14/2016 Las Vegas I NV 10,210,195 2,391,220 11,117,892 13,509,112 210,409 2,391,220 11,328,301 13,719,521 1,539,337 2002 7/28/2016 Las Vegas II NV 10,471,995 3,840,088 9,916,937 13,757,025 176,148 3,840,088 10,093,085 13,933,173 1,459,661 2000 9/23/2016 Las Vegas III NV 6,544,997 2,565,579 6,338,944 8,904,523 254,770 2,565,579 6,593,714 9,159,293 978,873 1989 9/27/2016 Asheville I NC 7,019,318 3,619,676 11,173,603 14,793,279 426,488 3,619,676 11,600,091 15,219,767 1,654,688 1988/2005/2015 12/30/2016 Asheville II NC 3,193,545 1,764,969 3,107,311 4,872,280 136,440 1,764,969 3,243,751 5,008,720 496,179 1984 12/30/2016 Hendersonville I NC 2,204,681 1,081,547 3,441,204 4,522,751 174,583 1,081,547 3,615,787 4,697,334 516,311 1982 12/30/2016 Asheville III NC 4,595,788 5,096,833 4,620,013 9,716,846 237,943 5,096,833 4,857,956 9,954,789 763,659 1991/2002 12/30/2016 Arden NC 6,443,829 1,790,118 10,265,741 12,055,859 286,135 1,790,118 10,551,876 12,341,994 1,347,993 1973 12/30/2016 Asheville IV NC 4,336,414 4,558,139 4,455,118 9,013,257 161,485 4,558,139 4,616,603 9,174,742 738,658 1985/1986/2005 12/30/2016 Asheville V NC 4,984,850 2,414,680 7,826,417 10,241,097 237,279 2,414,680 8,063,696 10,478,376 1,155,385 1978/2009/2014 12/30/2016 Asheville VI NC 3,428,604 1,306,240 5,121,332 6,427,572 191,332 1,306,240 5,312,664 6,618,904 702,186 2004 12/30/2016 Asheville VIII NC 4,457,995 1,764,965 6,162,855 7,927,820 253,925 1,764,965 6,416,780 8,181,745 939,546 1968/2002 12/30/2016 Hendersonville II NC 4,198,620 2,597,584 5,037,350 7,634,934 231,075 2,597,584 5,268,425 7,866,009 894,115 1989/2003 12/30/2016 Asheville VII NC 1,564,351 782,457 2,139,791 2,922,248 77,153 782,457 2,216,944 2,999,401 344,297 1999 12/30/2016 Sweeten Creek Land NC — 348,480 — 348,480 — 348,480 — 348,480 — N/A 12/30/2016 Highland Center Land NC — 50,000 — 50,000 — 50,000 — 50,000 — N/A 12/30/2016 Aurora II CO 8,560,873 1,584,664 8,196,091 9,780,755 133,413 1,584,664 8,329,504 9,914,168 1,292,252 2012 1/11/2017 Dufferin (2) ONT 18,821,895 6,258,511 16,287,332 22,545,843 2,995,447 (3) 6,958,371 18,582,919 25,541,290 2,312,634 2015 2/1/2017 Mavis (2) ONT 13,017,011 4,657,233 14,493,508 19,150,741 2,314,020 (3) 5,178,028 16,286,733 21,464,761 2,014,225 2013 2/1/2017 Brewster (2) ONT 9,586,853 4,136,329 9,527,410 13,663,739 1,607,064 (3) 4,598,876 10,671,927 15,270,803 1,339,009 2013 2/1/2017 Granite (2) ONT 6,332,600 3,126,446 8,701,429 11,827,875 1,443,554 (3) 3,476,062 9,795,367 13,271,429 1,171,561 1998/2016 2/1/2017 Centennial (2) ONT 4,485,592 1,714,644 11,428,538 13,143,182 1,593,845 (3) 1,906,384 12,830,643 14,737,027 1,512,894 2016/2017 2/1/2017 Initial Cost to Company Gross Carrying Amount at December 31, 2020 Description ST Encumbrance Land Building and Improvements Total Cost Capitalized Subsequent to Acquisition Land Building and Improvements Total (1) Accumulated Depreciation Date of Construction Date Acquired Ft. Pierce FL 6,479,547 1,152,931 12,398,306 13,551,237 129,493 1,156,293 12,524,437 13,680,730 749,851 2008 1/24/2019 Russell Blvd, Las Vegas II NV 13,002,835 3,433,634 15,449,497 18,883,131 132,138 3,438,279 15,576,990 19,015,269 1,169,420 1996 1/24/2019 Jones Blvd, Las Vegas I NV 10,902,999 1,975,283 12,565,410 14,540,693 113,052 1,978,884 12,674,861 14,653,745 757,400 1999 1/24/2019 Airport Rd, Colorado Springs CO 3,664,395 870,373 7,877,813 8,748,186 220,490 872,523 8,096,153 8,968,676 516,585 1983 1/24/2019 Riverside CA 6,461,036 1,259,685 6,995,794 8,255,479 253,593 1,261,734 7,247,338 8,509,072 481,177 1980 1/24/2019 Stockton CA 5,653,407 783,938 7,706,492 8,490,430 69,715 786,045 7,774,100 8,560,145 509,303 1984 1/24/2019 Azusa CA 9,530,028 4,384,861 9,153,677 13,538,538 202,371 4,388,187 9,352,722 13,740,909 584,010 1986 1/24/2019 Romeoville IL 3,836,240 964,701 5,755,146 6,719,847 183,355 966,367 5,936,835 6,903,202 402,473 1986 1/24/2019 Elgin IL 2,665,177 1,162,197 2,895,052 4,057,249 169,685 1,163,207 3,063,727 4,226,934 258,475 1986 1/24/2019 San Antonio I TX 9,126,214 1,602,740 9,196,093 10,798,833 184,566 1,605,415 9,377,984 10,983,399 592,176 1998 1/24/2019 Kingwood TX 6,299,510 1,016,291 9,358,519 10,374,810 174,887 1,018,822 9,530,875 10,549,697 630,274 2001 1/24/2019 Aurora CO 3,942,344 1,678,141 5,958,219 7,636,360 76,540 1,680,019 6,032,881 7,712,900 505,106 2015 1/24/2019 San Antonio II TX — 3,109,187 8,579,806 11,688,993 — — — — — 2004 1/24/2019 Stoney Creek I TOR 5,712,058 2,363,127 8,154,202 10,517,329 603,571 (3) 2,475,762 8,645,138 11,120,900 566,990 N/A 1/24/2019 Torbarrie TOR 6,423,863 2,714,051 — 2,714,051 — (3) 2,843,412 14,061,994 16,905,406 428,890 1980 1/24/2019 Baseline AZ 5,882,318 1,307,289 11,385,380 12,692,669 — 1,310,430 11,605,833 12,916,263 753,252 2016 1/24/2019 3173 Sweeten Creek Rd, Asheville NC 3,636,033 1,036,164 8,764,558 9,800,722 1,238,977 1,038,538 10,001,161 11,039,699 585,196 1982 1/24/2019 Elk Grove IL 3,670,067 2,384,166 6,000,071 8,384,237 164,242 2,386,241 6,162,238 8,548,479 400,769 2016 1/24/2019 Garden Grove CA 10,885,408 8,076,202 13,152,494 21,228,696 134,269 8,081,469 13,281,496 21,362,965 846,688 2017 1/24/2019 Deaverview Rd, Asheville NC 2,830,546 1,449,001 4,412,039 5,861,040 207,943 1,450,457 4,618,526 6,068,983 324,157 1992 1/24/2019 Highland Center Blvd, Asheville NC 3,267,324 1,763,875 4,823,116 6,586,991 99,121 1,765,497 4,920,615 6,686,112 332,058 1994 1/24/2019 Sarasota FL 3,687,085 1,084,165 7,359,913 8,444,078 86,558 1,086,243 7,444,393 8,530,636 446,430 2017 1/24/2019 Mount Pleasant SC 3,528,256 1,054,553 5,678,794 6,733,347 148,802 1,056,257 5,825,892 6,882,149 348,794 2016 1/24/2019 Nantucket MA 25,198,238 5,854,837 33,210,517 39,065,354 159,319 5,864,568 33,360,105 39,224,673 1,960,699 2002 1/24/2019 Pembroke Pines FL 8,559,709 3,146,970 14,296,167 17,443,137 70,708 3,151,227 14,362,618 17,513,845 892,843 2018 1/24/2019 Riverview FL 4,674,089 1,593,082 7,102,271 8,695,353 918,900 2,408,153 7,206,100 9,614,253 474,508 2018 1/24/2019 Eastlake CA 10,193,371 2,120,104 15,417,746 17,537,850 56,350 2,124,462 15,469,738 17,594,200 891,288 2018 1/24/2019 McKinney TX 5,990,094 2,177,186 9,320,876 11,498,062 134,923 2,179,999 9,452,986 11,632,985 573,274 2016 1/24/2019 Hualapai Way, Las Vegas NV 5,428,523 742,839 9,018,717 9,761,556 54,149 745,225 9,070,480 9,815,705 550,290 2018 1/24/2019 Gilbert AZ 5,672,438 1,379,687 9,021,255 10,400,942 457,349 1,037,750 9,820,541 10,858,291 457,210 2019 7/11/2019 Corporate Office CA 4,099,152 975,000 5,525,000 6,500,000 — 975,000 5,555,585 6,530,585 223,735 2018 1/24/2019 $ 721,512,177 $ 334,865,685 $ 823,989,800 $ 1,158,855,485 $ 48,490,556 $ 335,800,354 $ 874,302,228 $ 1,210,102,582 $ 115,903,045 (1) The aggregate cost of real estate for United States federal income tax purposes is approximately $1,246,517,589. (2) This property is located in Ontario, Canada. (3) The change in cost at these self storage facilities are the net of the impact of foreign exchange rate changes and any actual additions. Activity in real estate facilities d uring 2020 was as follows: 2020 Real estate facilities Balance at beginning of year $ 1,173,825,368 Impact of foreign exchange rate changes 4,147,798 Improvements, additions and other 32,129,416 Balance at end of year $ 1,210,102,582 Accumulated depreciation Balance at beginning of year $ (83,692,491 ) Depreciation expense (31,711,102 ) Impact of foreign exchange rate changes (499,452 ) Balance at end of year $ (115,903,045 ) Construction in process Balance at beginning of year $ 12,237,722 Net additions and assets placed into service (10,476,419 ) Balance at end of year $ 1,761,303 Real estate facilities, net $ 1,095,960,840

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC. Unaudited Information The square footage, unit count, and occupancy percentage data and disclosures included in these notes to the consolidated financial statements are unaudited.
Unaudited Information	Unaudited Information The square footage, unit count, and occupancy percentage data and disclosures included in these notes to the consolidated financial statements are unaudited.
Principles of Consolidation	Principles of Consolidation Our financial statements, and the financial statements of our Operating Partnership, including its wholly-owned subsidiaries, are consolidated in the accompanying consolidated financial statements. The portion of these entities not wholly-owned by us is presented as noncontrolling interests. All significant intercompany accounts and transactions have been eliminated in consolidation.
Consolidation Considerations	Consolidation Considerations Current accounting guidance provides a framework for identifying a variable interest entity (“VIE”) and determining when a company should include the assets, liabilities, noncontrolling interests, and results of activities of a VIE in its consolidated financial statements. In general, a VIE is an entity or other legal structure used to conduct activities or hold assets that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. Generally, a VIE should be consolidated if a party with an ownership, contractual, or other financial interest in the VIE (a variable interest holder) has the power to direct the VIE’s most significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could be significant to the VIE. A variable interest holder that consolidates the VIE is called the primary beneficiary. Upon consolidation, the primary beneficiary generally must initially record all of the VIE’s assets, liabilities, and noncontrolling interest at fair value and subsequently account for the VIE as if it were consolidated based on majority voting interest. Our Operating Partnership is deemed to be a VIE and is consolidated by the Company as the primary beneficiary. As of December 31, 2020, and 2019, we were not a party to any other contracts/interests that would be deemed to be variable interest in VIEs other than our Tenant Programs joint ventures with SST IV and SSGT II which were acquired in the Self Administration Transaction, which are consolidated.
Equity Investments	Equity Investments Under the equity method, our investments will be stated at cost and adjusted for our share of net earnings or losses and reduced by distributions and impairments, as applicable. Equity in earnings will generally be recognized based on our ownership interest in the earnings of each of the unconsolidated investments.
Investments in and Advances to Managed REITs	Investments in and Advances to Managed REITs As of December 31, 2020, and 2019, we owned equity investments with a carrying value of approximately $15.1 million, and $5.8 million, respectively, in the Managed REITs; such amounts are included in Investments in and advances to Managed REITs within our Consolidated Balance Sheets. We account for these investments using the equity method of accounting as we have the ability to exercise significant influence, but not control, over the Managed REITs’ operating and financial policies through our advisory and property management agreements with the respective Managed REITs. The equity method of accounting requires the investment to be initially recorded at cost and subsequently adjusted for our share of equity in the respective Managed REIT’s earnings and reduced by distributions. Also included in Investments in and advances to Managed REITs as of December 31 , 2020 are receivables from the Managed REITs of approximately $ 0.5 million . As of December 31, 2019, receivables from the Managed REITs approximated $ 0.3 million . For additional discussion, see Note 11 – Related Party Transactions .
Noncontrolling Interests in Consolidated Entities	Noncontrolling Interests in Consolidated Entities We account for the noncontrolling interests in our Operating Partnership and the noncontrolling interests in our Tenant Programs joint ventures with SST IV and SSGT II in accordance with the related accounting guidance. Due to our control through our general partnership interest in our Operating Partnership and the limited rights of the limited partners, our Operating Partnership, including its wholly-owned subsidiaries, are consolidated with the Company and the limited partner interests are reflected as a noncontrolling interests in the accompanying consolidated balance sheets. We also consolidate our interests in the SST IV and SSGT II Tenant Programs and present the minority interests as noncontrolling interests in the accompanying consolidated balance sheets. The noncontrolling interests shall be attributed their share of income and losses, even if that attribution results in a deficit noncontrolling interests balance.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management will adjust such estimates when facts and circumstances dictate. Actual results could materially differ from those estimates. The most significant estimates made include the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed at relative fair value, the determination if certain entities should be consolidated, the evaluation of potential impairment of indefinite and long-lived assets and goodwill, and the estimated useful lives of real estate assets and intangibles.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all short-term, highly liquid investments that are readily convertible to cash with a maturity of three months or less at the time of purchase to be cash equivalents. We may maintain cash and cash equivalents in financial institutions in excess of insured limits, but believe this risk will be mitigated by only investing in or through major financial institutions.
Restricted Cash	Restricted Cash Restricted cash consists primarily of impound reserve accounts for property taxes, insurance and capital improvements in connection with the requirements of certain of our loan agreements.
Real Estate Purchase Price Allocation	Real Estate Purchase Price Allocation We account for acquisitions in accordance with GAAP which requires that we allocate the purchase price of a property to the tangible and intangible assets acquired and the liabilities assumed based on their relative fair values as of the date of acquisition. This guidance requires us to make significant estimates and assumptions, including fair value estimates, which requires the use of significant unobservable inputs as of the acquisition date. The value of the tangible assets, consisting of land and buildings, is determined as if vacant . Substantially all of the leases in place at acquired properties are at market rates, as the majority of the leases are month-to-month contracts. We also consider whether in-place, market leases represent an intangible asset. We recorded none , approximately $ 13.6 million , and none in intangible assets to recognize the value of in-place leases related to our acquisitions during the year s ended December 31, 2020, 2019 and 2018 respectively. We do not expect, nor to date have we recorded, intangible assets for the value of customer relationships because we expect we will not have concentrations of significant customers and the average customer turnover will be fairly frequent . Acquisitions that do not meet the definition of a business, as defined under current GAAP, are accounted for as asset acquisitions. During the years ended December 31, 2020 and 2019, our property acquisitions did not meet the definition of a business because substantially all of the fair value was concentrated in a single identifiable asset or group of similar identifiable assets (i.e. land, buildings, and related intangible assets) or because the acquisitions did not include a substantive process in the form of an acquired workforce or an acquired contract that cannot be replaced without significant cost, effort or delay. As a result, once an acquisition is deemed probable, transaction costs are capitalized rather than expensed. During the years ended December 31, 2020, 2019, and 2018 we expensed approximately $1.4
Purchase Price Allocation for the Acquisition of a Business	Purchase Price Allocation for the Acquisition of a Business Should the initial accounting for an acquisition that meets the definition of a business be incomplete by the end of a reporting period that falls within the measurement period, we report provisional amounts in our financial statements. During the measurement period, we may adjust the provisional amounts recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and we record those adjustments to our financial statements. We apply any measurement period adjustments in the period in which the provisional amounts are finalized.
Evaluation of Possible Impairment of Real Property Assets	Evaluation of Possible Impairment of Real Property Assets Management monitors events and changes in circumstances that could indicate that the carrying amounts of our real property assets may not be recoverable. When indicators of potential impairment are present that indicate that the carrying amounts of the assets may not be recoverable, we will assess the recoverability of the assets by determining whether the carrying value of the real property assets will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we will adjust the value of the real property assets to the fair value and recognize an impairment loss. For the years ended December 31, 2020, 2019, and 2018, no impairment losses were recognized.
Goodwill Valuation	Goodwill Valuation We initially recorded goodwill of approximately $78.4 million as a result of the Self Administration Transaction. Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible assets and other intangible assets acquired. Goodwill is allocated to various reporting units, as applicable, and is not amortized. We perform an annual impairment test for goodwill, and between annual tests, we evaluate the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying amount of goodwill may not be fully recoverable. In our impairment test of goodwill, we perform a quantitative analysis to compare the fair value of each reporting unit to its respective carrying amount. If the carrying amount of goodwill exceeds its fair value, an impairment charge will be recognized. See Note 5—Self Administration Transaction - Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information.
Trademarks	Trademarks In connection with the Self Administration Transaction, we initially recorded $19.8 million associated with the two primary trademarks acquired. Prior thereto we had no amounts recorded related to trademarks. Trademarks are based on the value of our brands. Trademarks are valued using the relief from royalty method, which presumes that without ownership of such trademarks, we would have to make a stream of payments to a brand or franchise owner in return for the right to use their name. By virtue of this asset, we avoid any such payments and record the related intangible fair value of our ownership of the brand name. We used the following significant projections and assumptions to determine fair value under the relief from royalty method: revenues; royalty rate; tax expense; terminal growth rate; and discount rate. For the SmartStop ® ® The total estimated future amortization expense of the “Strategic Storage®” trademark asset for the years ending December 31, 2021, 2022, 2023, 2024, and thereafter is approximately $140,000, $140,000, $140,000, $70,000, and none, respectively. We qualitatively evaluate whether any triggering events or changes in circumstances have occurred subsequent to our annual impairment test that would indicate an impairment condition may exist. If any change in circumstance or triggering event occurs, and results in a significant impact to our revenue and profitability projections, or any significant assumption in our valuation methods is adversely impacted, the impact could result in a material impairment charge in the future. See Note 5 - Self Administration Transaction - Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information.
Revenue Recognition	Revenue Recognition Self Storage Operations Management believes that all of our leases are operating leases. Rental income is recognized in accordance with the terms of the leases, which generally are month-to-month. Revenues from any long-term operating leases are recognized on a straight-line basis over the term of the lease. The excess of rents received over amounts contractually due pursuant to the underlying leases is included in accounts payable and accrued liabilities in our consolidated balance sheets, and contractually due but unpaid rent is included in other assets. Managed REIT Platform We earn property management and asset management revenue, pursuant to the respective property management and advisory agreement contracts, in connection with providing services to the Managed REITs. We have determined under ASC 606 – Revenue from Contracts with Customers (“ASC 606”), that the performance obligation for the property management services and asset management services are satisfied as the services are rendered. While we are compensated for our services on a monthly basis, these services represent a series of distinct daily services in accordance with ASC 606. Such revenue is recorded in the Managed REIT Platform revenue line within our consolidated statements of operations. The Managed REITs’ advisory agreements also provide for reimbursement to us of our direct and indirect costs of providing administrative and management services to the Managed REITs. These reimbursements include costs incurred in relation to organization and offering services provided to the Managed REITs and the reimbursement of salaries, bonuses, and other expenses related to benefits paid to our employees while performing services for the Managed REITs. T he Managed REITs’ property management agreements also provide r eimbursement to us for the property manager’s costs of managing the properties. Reimbursable costs include wages and salaries and other expenses that arise in operating, managing and maintaining the Managed REITs’ properties. Under ASC 606, direct reimbursement of such costs does not represent a separate performance obligation from our obligation to perform property management and asset management services. The reimbursement income is considered variable consideration, and is recognized as the costs are incurred, subject to limitations on the Managed REIT Platform’s ability to incur offering costs or limitations imposed by the advisory agreements. We have elected to separately record such revenue in the Reimbursable costs from Managed REITs line within our consolidated statements of operations. Additionally, we earn revenue in connection with our Tenant Programs joint ventures with our Managed REITs. We also earn development and construction management revenue from services we provide in connection with the project design, coordination and oversite of development and certain capital improvement projects undertaken by the Managed REITs. We recognize such revenue in the Managed REIT Platform revenue line within our consolidated statements of operations. See Note 11 – Related Party Transactions, for additional information regarding revenue generated from our Managed REIT Platform.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts Tenant accounts receivable is reported net of an allowance for doubtful accounts. Management records this general reserve estimate based upon a review of the current status of accounts receivable. It is reasonably possible that management’s estimate of the allowance will change in the future.
Real Estate Facilities	Real Estate Facilities We capitalize costs incurred to develop, construct, renovate and improve properties, including interest and property taxes incurred during the construction period. The construction period begins when expenditures for the real estate assets have been made and activities that are necessary to prepare the asset for its intended use are in progress. The construction period ends when the asset is substantially complete and ready for its intended use.
Depreciation of Real Property Assets	Depreciation of Real Property Assets Our management is required to make subjective assessments as to the useful lives of our depreciable assets. We consider the period of future benefit of the asset to determine the appropriate useful lives. Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives Description Standard Depreciable Life Land Not Depreciated Buildings 30-40 years Site Improvements 7-10 years
Depreciation of Personal Property Assets	Depreciation of Personal Property Assets Personal property assets consist primarily of furniture, fixtures and equipment and are depreciated on a straight-line basis over the estimated useful lives, generally ranging from 3 to 5 years, and are included in other assets on our consolidated balance sheets.
Intangible Assets	Intangible Assets We have allocated a portion of our real estate purchase price to in-place lease intangibles. We amortize in-place lease intangibles on a straight-line basis over the estimated future benefit period. As of December 31, 2020, the gross amount allocated to in-place lease intangibles was approximately $47.3 million and accumulated amortization of in-place lease intangibles totaled approximately $45.7 million. As of December 31, 2019, the gross amounts allocated to in-place lease intangibles were approximately $46.8 million and accumulated amortization of in-place lease intangibles totaled approximately $40.4 million. The total estimated future amortization expense of intangible assets related to our self storage properties for the years ending December 31, 2021, 2022, 2023, 2024, 2025 and thereafter is approximately $0.1 million, $0.1 million, $0.1 million, $0.1 million, and $1.0 million respectively. In connection with the Self Administration Transaction, we allocated a portion of the consideration to the contracts that we acquired related to the Managed REITs and the customer relationships related to the Tenant Programs joint ventures. For these intangibles, we are amortizing such amounts on a straight-line basis over the estimated benefit period of the contracts and customer relationships. As of December 31, 2020, the gross amount of the intangible assets related to the Managed REITs contracts and the customer relationships related to the Tenant Programs joint ventures was approximately $18.1 million and the accumulated amortization was approximately $7.3 million. As of December 31, 2019, the gross amount of the intangibles related to the Managed REITs contracts and the customer relationships related to the Tenant Programs joint ventures was approximately $26.5 million and accumulated amortization of those intangibles totaled approximately $2.9 million The total estimated future amortization expense for such intangible assets for the years ending December 31, 2021, 2022, 2023, 2024 and 2025 is approximately $2.9 million, $2.9 million, $2.9 million, $1.8 million and $0.3 million, respectively. We evaluate whether any triggering events or changes in circumstances have occurred subsequent to our annual impairment test that would indicate an impairment condition may exist. If any change in circumstance or triggering event occurs, and results in a significant impact to our revenue and profitability projections, or any significant assumption in our valuations methods is adversely impacted, the impact could result in a material impairment charge in the future. See Note 5 – Self Administration Transaction – Intangibles, Goodwill, and Certain Other Assets and Liabilities for additional information.
Debt Issuance Costs	Debt Issuance Costs The net carrying value of costs incurred in connection with obtaining non revolving debt are presented on the balance sheet as a deduction from debt (see Note 7). Debt issuance costs are amortized on a straight-line basis over the term of the related loan, which is not materially different than the effective interest method . As of December 31 , 2020 , the gross amount allocated to debt issuance costs related to non-revolving debt totaled approximately $ 12.0 million and accumulated amortization of debt issuance costs related to non-revolving debt totaled approximately $ 7.9 million . As of December 31 , 201 9, the gross amount allocated to debt issuance costs related to non-revolving debt totaled approximately $ 11.9 million and accumulated amortization of debt issuance costs related to non-revolving debt totaled approximately $ 4.3 million .
Organizational and Offering Costs	Organizational and Offering Costs We pay our Former Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. We will cease paying the stockholder servicing fee with respect to the Class T Shares sold in the Primary Offering at the earlier of (i) the date we list our shares on a national securities exchange, merge or consolidate with or into another entity, or sell or dispose of all or substantially all of our assets; (ii) the date at which the aggregate underwriting compensation from all sources equals 10%
Foreign Currency Translation	Foreign Currency Translation For non-U.S. functional currency operations, assets and liabilities are translated to U.S. dollars at current exchange rates. Revenues and expenses are translated at the average rates for the period. All adjustments related to amounts classified as long term net investments are recorded in accumulated other comprehensive income (loss) as a separate component of equity. Transactions denominated in a currency other than the functional currency of the related operation are recorded at rates of exchange in effect at the date of the transaction. Changes in investments not classified as long term are recorded in other income (expense) and represented a gain of approximately $0.6 million and approximately $0.9 million for the years ended December 31, 2020 and 2019, respectively.
Redeemable Common Stock	Redeemable Common Stock We adopted a share redemption program (“SRP”) that enables stockholders to sell their shares to us in limited circumstances. We record amounts that are redeemable under the SRP as redeemable common stock in the accompanying consolidated balance sheets since the shares are redeemable at the option of the holder and therefore their redemption is outside our control. The maximum amount redeemable under our SRP is limited to the number of shares we can repurchase with the amount of the net proceeds from the sale of shares under the distribution reinvestment plan. However, accounting guidance states that determinable amounts that can become redeemable should be presented as redeemable when such amount is known. Therefore, the net proceeds from the distribution reinvestment plan are considered to be temporary equity and are presented as redeemable common stock in the accompanying consolidated balance sheets. In addition, current accounting guidance requires, among other things, that financial instruments that represent a mandatory obligation of us to repurchase shares be classified as liabilities and reported at settlement value. When we determine we have a mandatory obligation to repurchase shares under the SRP, we reclassify such obligations from temporary equity to a liability based upon their respective settlement values. On August 26, 2019, our board of directors approved a partial suspension of our SRP, effective as of September 27, 2019, so that common shares were redeemable at the option of the holder only in connection with (i) death or disability of a stockholder, (ii) confinement to a long-term care facility, or (iii) other exigent circumstances . In order to preserve cash in light of the uncertainty relating to COVID-19 and its potential impact on our overall financial results, o n March 30, 2020, our board of directors approved the complete suspension of our SRP, effective on April 29, 2020. Due to the complete suspension, we were unable to honor redemption requests made during the quarter ended March 31, 2020 or the quarter ended June 30, 2020. On August 20, 2020, our board of directors determined that it would be in our best interests to partially reinstate the SRP, effective as of September 23, 2020. Currently, our redemption program remains suspended other than for redemptions sought in connection with a stockholder’s death, qualifying disability, confinement to a long-term care facility or other exigent circumstances. For the year ended December 31, 2020, we received redemption requests totaling approximately $2.0 million (approximately 0.2 million shares), approximately $1.3 million of which were fulfilled during the year ended December 31, 2020, with the remaining approximately $0.7 million included in accounts payable and accrued liabilities as of December 31, 2020 and fulfilled in January 2021. For the year ended December 31, 2019, we received redemption requests totaling approximately $4.9 million (approximately 0.5 million shares), approximately $4.5 million of which were fulfilled during the year ended December 31, 2019, with the remaining approximately $0.4 million included in accounts payable and accrued liabilities as of December 31, 2019 and fulfilled in January 2020. For the year ended December 31, 2018, we received redemption requests totaling approximately $8.3 million (approximately 0.9 million shares), approximately $7.0 million of which were fulfilled during the year ended December 31, 2018, with the remaining approximately $1.3 million included in accounts payable and accrued liabilities as of December 31, 2018 and fulfilled in January 2019.
Accounting for Equity Awards	Accounting for Equity Awards We issue equity based awards in two forms: (1) restricted stock awards consisting of shares of our common stock and (2) long-term incentive plan units of our Operating Partnership (“LTIP Units”), both of which may be issued subject to either For time based awards granted which contain a graded vesting schedule, compensation cost is recognized as an expense on a straight-line basis over the requisite service period as if the award was, in substance, a single award. For performance based awards, compensation cost is recognized over the requisite service period if and when we determine the performance condition is probable of being achieved.
Fair Value Measurements	Fair Value Measurements Under GAAP, we are required to measure certain financial instruments at fair value on a recurring basis. In addition, we are required to measure other financial instruments and balances at fair value on a non-recurring basis. Fair value is defined by the accounting standard for fair value measurements and disclosures as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels. The following summarizes the three levels of inputs and hierarchy of fair value we use when measuring fair value: • Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access; • Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as interest rates and yield curves that are observable at commonly quoted intervals; and • Level 3 inputs are unobservable inputs for the assets or liabilities that are typically based on an entity’s own assumptions as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the fair value measurement will fall within the lowest level that is significant to the fair value measurement in its entirety. The accounting guidance for fair value measurements and disclosures provides a framework for measuring fair value and establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In determining fair value, we will utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment will be necessary to interpret Level 2 and 3 inputs in determining fair value of our financial and non-financial assets and liabilities. Accordingly, there can be no assurance that the fair values we will present will be indicative of amounts that may ultimately be realized upon sale or other disposition of these assets . Financial and non-financial assets and liabilities measured at fair value on a non-recurring basis in our consolidated financial statements consist of real estate and related liabilities assumed related to our acquisitions along with the assets and liabilities described in Note 4 - Self Administration Transaction. The fair values of these assets and liabilities were determined as of the acquisition dates using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity. Additionally, certain such assets and liabilities are required to be fair valued periodically or valued pursuant to ongoing impairment analyses and have been valued subsequently utilizing the same techniques noted above. In general, we consider multiple valuation techniques when measuring fair values. However, in certain circumstances, a single valuation technique may be appropriate. All of the fair values of the assets and liabilities as of the acquisition dates were derived using Level 3 inputs. The carrying amounts of cash and cash equivalents, restricted cash, other assets, variable-rate debt, accounts payable and accrued liabilities, distributions payable and amounts due to affiliates approximate fair value. The table below summarizes our fixed rate notes payable at December 31, 2020 and 2019. The estimated fair value of financial instruments is subjective in nature and is dependent on a number of important assumptions, including discount rates and relevant comparable market information associated with each financial instrument. The fair value of the fixed rate notes payable was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. The use of different market assumptions and estimation methodologies may have a material effect on the reported estimated fair value amounts. Accordingly, the estimates presented below are not necessarily indicative of the amounts we would realize in a current market exchange. December 31, 2020 December 31, 2019 Fair Value Carrying Value Fair Value Carrying Value Fixed Rate Secured Debt $ 316,000,000 $ 301,988,969 $ 311,700,000 $ 302,820,786 As of December 31, 2020 and 2019, we had interest rate swaps, interest rate caps, and a net investment hedge (See Notes 7 and 9). The valuations of these instruments were determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of the derivative. The analyses reflect the contractual terms of the derivatives, including the period to maturity, and used observable market-based inputs, including interest rate curves, foreign exchange rates, and implied volatilities. The fair value of the interest rate swaps were determined using the market standard methodology of netting the discounted future fixed cash payments and the discounted expected variable cash payments. Our fair values of our net investment hedges are based on the change in the spot rate at the end of the period as compared with the strike price at inception. To comply with GAAP, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of derivative contracts for the effect of non-performance risk, we consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Although we had determined that the majority of the inputs used to value our derivatives were within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilized Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by us and our counterparties. However, through December 31, 2020, we had assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and determined that the credit valuation adjustments were not significant to the overall valuation of our derivatives. As a result, we determined that our derivative valuations in their entirety were classified in Level 2 of the fair value hierarchy.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities We record all derivatives on our balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. We may enter into derivative contracts that are intended to economically hedge certain of our risks, even though hedge accounting does not apply or we elect not to apply hedge accounting. For derivatives designated as net investment hedges, the effective portion of changes in the fair value of the derivatives are reported in accumulated other comprehensive income (loss). The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. Amounts are reclassified out of other comprehensive (loss) income into earnings (loss) when the hedged net investment is either sold or substantially liquidated.
Out-of-Period Adjustment	Out-of-Period Adjustment
Income Taxes	Income Taxes We made an election to be taxed as a Real Estate Investment Trust (“REIT”), under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the “Code”), commencing with our taxable year ended December 31, 2014. To qualify as a REIT, we must continue to meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the REIT’s ordinary taxable income to stockholders (which is computed without regard to the dividends paid deduction or net capital gains and which does not equal net income as calculated in accordance with GAAP). For income tax purposes, distributions to common stockholders are characterized as ordinary dividends, capital gain dividends, or as nontaxable distributions. To the extent that we make a distribution in excess of our current or accumulated earnings and profits, the distribution will be a non-taxable return of capital, reducing the tax basis in each U.S. stockholder’s shares, and the amount of each distribution in excess of a U.S. stockholder’s tax basis in its shares will be taxable as gain realized from the sale of its shares. As a REIT, we generally will not be subject to federal income tax on taxable income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we will then be subject to federal income taxes on our taxable income at regular corporate rates and will not be permitted to qualify for treatment as a REIT for federal income tax purposes for four years following the year during which qualification is lost unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. Even if we continue to qualify for taxation as a REIT, we may be subject to certain state, local, and foreign taxes on our income and property, and federal income and excise taxes on our undistributed income. We filed an election to treat our TRS as a taxable REIT subsidiary effective January 1, 2014. In general, our TRS performs additional services for our customers and provides the advisory and property management services to the Managed REITs and otherwise generally engages in any real estate or non-real estate related business. The TRS is subject to corporate federal and state income tax. Deferred tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities. As of December 31, 2020 and 2019 we had a deferred tax liability of approximately $8.4 million and $6.6 million, respectively, related to intangible assets acquired in the Self Administration Transaction and real property tax basis differences in certain of our Canadian properties. As of December 31, 2020, the net deferred tax liability of approximately $8.4 million was comprised of a deferred tax liability of approximately $2.6 million related to our intangible assets acquired in the Self Administration Transaction, and a net deferred tax liability of approximately $5.8 million recorded at certain of our Canadian properties. The $5.8 million net deferred tax liability is comprised of a gross deferred tax liability of approximately $9.6 million, net of a gross deferred tax asset of approximately $3.8 million. The income tax benefit for the years ended December 31, 2020 and 2019 includes a deferred tax benefit of approximately $5.9 million and $0.8 million, respectively, and a current tax expense of approximately $0.1 million and none, respectively. The Company recorded a net combined foreign, federal, and state income tax benefit of $5.8 million and $0.8 million for the years ended December 31, 2020 and 2019, respectively, which are included in Other in our consolidated statements of operations. At December 31, 2020 and 2019, there were no material unrecognized tax benefits. Interest and penalties relating to uncertain tax positions will be recognized in income tax expense when incurred. As of December 31, 2020 and 2019, the Company had no interest or penalties related to uncertain tax positions. Income taxes payable are classified within accounts payable and accrued liabilities in the consolidated balance sheets. The tax years 2016-2019 remain open to examination by the major taxing jurisdictions to which we are subject.
Concentration	Concentration No single self storage customer represents a significant concentration of our revenues. For the month of December 2020, approximately 24%, 21%, and 13% of our rental income was concentrated in California, Florida, and the Greater Toronto Area of Canada, respectively
Segment Reporting	Segment Reporting Our business is comprised of two reportable segments: (i) self storage operations and (ii) the Managed REIT Platform business. Please see Note 10 – Segment Disclosures for additional detail.
Convertible Preferred Stock	Convertible Preferred Stock We classify our Series A Convertible Preferred Stock on our consolidated balance sheets using the guidance in ASC 480‑10‑S99. Our Series A Convertible Preferred Stock can be redeemed by us on or after the fifth anniversary of its issuance, or if certain events occur, such as the listing of our common stock on a national securities exchange, a change in control, or if a redemption would be required to maintain our REIT status. Additionally, if we do not maintain our REIT status the holder can require redemption. As the shares are contingently redeemable, and under certain circumstances not solely within our control, we have classified our Series A Convertible Preferred Stock as temporary equity. We have analyzed whether the conversion features in our Series A Convertible Preferred Stock should be bifurcated under the guidance in ASC 815‑10 and have determined that bifurcation is not necessary.
Per Share Data	Per Share Data Basic earnings per share attributable to our common stockholders for all periods presented are computed by dividing net income (loss) attributable to our common stockholders by the weighted average number of common shares outstanding during the period, excluding unvested restricted stock. Diluted earnings per share is computed by including the dilutive effect of the conversion of all potential common stock equivalents (which includes unvested restricted stock and convertible preferred stock) and the adding back of the Series A Convertible
Recently Adopted/Issued Accounting Guidance	Recently Adopted Accounting Guidance In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 amends the guidance on accounting for leases. Under ASU 2016-02, lessees will be required to recognize the following for all leases (with the exception of short term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under ASU 2016-02, lessor accounting is largely unchanged. It also includes extensive amendments to the disclosure requirements. ASU 2016-02 is effective for fiscal years and interim periods beginning after December 15, 2018. We adopted this standard and all related amendments on January 1, 2019 using the modified retrospective approach, without applying the provisions to comparative periods presented. Its adoption did not have a material impact on our consolidated financial statements as substantially all of our lease revenues are derived from month-to-month leases and, as lessee, we have no significant leases In addition, the new standard requires our expected loss related to collectability of rental payments, previously reflected in property operating expenses as bad debt expense, to be reflected as a reduction to self storage rental revenue. The impact of this was a reduction in both self storage rental revenue and property operating expenses of approximately $1.4 million and $1.7 million for the years ended December 31, 2020, and 2019, respectively. During the year ended December 31, 2018, bad debt expense totaled approximately $1.2 million, and is included in property operating expenses. In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." The new guidance changes how entities measure credit losses for most financial assets. This standard requires an entity to estimate its lifetime expected credit loss and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. In November 2018, the FASB issued ASU 2018-19, "Codification Improvements to Topic 326, Financial Instruments - Credit Losses," which clarified that receivables arising from operating leases are within the scope of the leasing standard (ASU 2016-02), and not within the scope of ASU 2016-13. This new standard became effective on January 1, 2020. Our adoption of this standard did not have a material impact on the consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities”. ASU 2017-12 is intended to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements and to simplify the application of the hedge accounting guidance under previous GAAP. ASU 2017-12 is effective for fiscal years and interim periods within those years beginning after December 15, 2018, with early adoption permitted. For cash flow and net investment hedges existing at the date of adoption, a reporting entity must apply the amendments in ASU 2017-12 using the modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. The Company adopted ASU 2017-12 effective beginning January 1, 2019, and its adoption did not have a material impact on our financial statements . In January 2017, the FASB issued ASU 2017-04, “Intangibles—Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment” . The standard simplifies the subsequent measurement of goodwill by removing the requirement to perform a hypothetical purchase price allocation to compute the implied fair value of goodwill to measure impairment. Instead, goodwill impairment is measured as the difference between the fair value and the carrying value, as applicable. This standard is effective for annual or any interim goodwill impairment test in fiscal years beginning after December 15, 2019, with early adoption permitted for impairment tests performed after January 1, 2017. The Company early adopted ASU 2017-04 . Recently Issued Accounting Guidance In August 2020, the FASB issued ASU 2020-06, "Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40)." The new guidance simplifies the accounting for convertible instruments and amends the guidance for the derivatives scope exception for contracts in an entity’s own equity. Additionally, this standard amends the related earnings per share guidance. The guidance in ASU 2020-06 becomes effective for fiscal years beginning after December 15, 2021. . In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848)." ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. We continue to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Estimated Useful Lives used to Depreciate Real Property Assets	Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives Description Standard Depreciable Life Land Not Depreciated Buildings 30-40 years Site Improvements 7-10 years
Summary of Fixed Rate Notes Payable	The table below summarizes our fixed rate notes payable at December 31, 2020 and 2019. The estimated fair value of financial instruments is subjective in nature and is dependent on a number of important assumptions, including discount rates and relevant comparable market information associated with each financial instrument. The fair value of the fixed rate notes payable was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. The use of different market assumptions and estimation methodologies may have a material effect on the reported estimated fair value amounts. Accordingly, the estimates presented below are not necessarily indicative of the amounts we would realize in a current market exchange. December 31, 2020 December 31, 2019 Fair Value Carrying Value Fair Value Carrying Value Fixed Rate Secured Debt $ 316,000,000 $ 301,988,969 $ 311,700,000 $ 302,820,786

Real Estate Facilities (Tables)

Real Estate Facilities (Tables)	12 Months Ended
	Dec. 31, 2020
Summary of Activity in Real Estate Facilities	The following summarizes the activity in real estate facilities during the years ended December 31, 2020 and 2019: Real estate facilities Balance at December 31, 2018 $ 820,296,026 Facilities acquired through merger with SSGT 334,139,296 Asset disposals (11,688,993 ) Corporate office acquired through Self Administration Transaction 6,500,000 Other facility acquisitions 10,430,942 Impact of foreign exchange rate changes 6,582,603 Improvements and additions 7,565,494 Balance at December 31, 2019 1,173,825,368 Impact of foreign exchange rate changes 4,147,798 Acquisitions, additions and other (1) 32,129,416 Balance at December 31, 2020 $ 1,210,102,582 Accumulated depreciation Balance at December 31, 2018 $ (54,264,685 ) Asset disposals 202,416 Depreciation expense (29,188,668 ) Impact of foreign exchange rate changes (441,554 ) Balance at December 31, 2019 (83,692,491 ) Depreciation expense (31,711,102 ) Impact of foreign exchange rate changes (499,452 ) Balance at December 31, 2020 $ (115,903,045 ) (1)
Summary of Reconciles Total Consideration Transferred	The estimated fair value of the consideration transferred totaled approximately $111.3 million and consisted of the following: Estimated Fair Value of Consideration Transferred Cash (1) $ 3,918,185 Class A-1 Units 63,643,000 Class A-2 Units (contingent earnout) 30,900,000 Total Consideration Transferred 98,461,185 Fair value of our preexisting 50% equity interests 12,800,000 Total $ 111,261,185
Summary of Relative Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed: Identifiable Assets Acquired at Fair Value Cash and cash equivalents $ 36,443 Restricted cash 94,999 Land 975,000 Building 5,389,000 Site Improvements 136,000 Equipment, furniture and fixtures 651,000 Investments in Managed REITs 5,600,000 Other assets 1,084,629 Intangibles - customer relationships 1,600,000 Trademarks 19,800,000 Intangibles - management contracts 24,900,000 Total identifiable assets acquired $ 60,267,071 Identifiable Liabilities Assumed at Fair Value Debt $ 19,219,126 Accounts payable and accrued expenses 722,286 Deferred tax liabilities, net 7,415,654 Total liabilities assumed $ 27,357,066 Net identifiable assets acquired $ 32,910,005 Goodwill 78,372,980 Non-controlling interest related to consolidated Tenant Programs joint ventures (21,800 ) Net assets acquired $ 111,261,185
Summary of Purchase Price Allocation for Acquisitions	The following table summarizes our purchase price allocation for our acquisitions during the year ended December 31, 2019 : Acquisition Acquisition Date Real Estate Assets Construction in Process (4) Intangibles Total (1) Debt Issued or Assumed 2019 Revenue (2) 2019 Property Operating Income (2)(3) SSGT Mergers (5) 1/24/2019 $ 334,139,296 $ 5,370,773 $ 13,571,765 $ 353,081,834 $ 193,376,846 $ 21,909,300 $ 12,032,555 Riggs Rd - Gilbert (6) 7/11/2019 10,430,942 - - 10,430,942 5,702,000 62,085 (44,459 ) 2019 Total $ 344,570,238 $ 5,370,773 $ 13,571,765 $ 363,512,776 $ 199,078,846 $ 21,971,385 $ 11,988,096 (1) The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs. (2) The operating results of the self storage properties acquired during the year ended December 31, 2019 were included in our consolidated statements of operations since their respective acquisition date (3) Property operating income excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses (4) Construction in process relates to the Torbarrie property in Toronto, Canada, which is a self storage property that was under construction at the time of acquisition. Such facility opened subsequently in 2020. (5) SSGT had stated investment objectives to acquire opportunistic self storage properties, including development, and lease-up properties. As a result, many of its properties were not physically and/or economically stabilized as of the date of the SSGT Mergers (6) The Gilbert Property was acquired with 0% occupancy as of the acquisition date
Strategic Storage Growth Trust, Inc
Summary of Reconciles Total Consideration Transferred	The following table reconciles the total consideration transferred during the SSGT Mergers: Fair value of consideration transferred: Cash $ 346,231,561 (1) Issuance of limited partnership units in our Operating Partnership to SS Growth Advisor, LLC 4,217,399 Total consideration transferred $ 350,448,960 (1) approximately $19 million of SSGT debt that was repaid at closing, approximately $5 million of other SSGT liabilities paid at closing, and approximately $1 million in transaction costs
Summary of Relative Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the relative fair values of the assets acquired and liabilities assumed in the SSGT Mergers: Assets Acquired: Land $ 62,261,573 Buildings 255,743,767 Site improvements 16,133,956 Construction in process 5,370,773 Intangible assets 13,571,765 Cash and cash equivalents 692,965 Other assets 6,536,838 Total assets acquired $ 360,311,637 Liabilities assumed: Debt $ 5,038,435 Accounts payable and accrued liabilities 4,824,242 Total liabilities assumed $ 9,862,677 Total net assets acquired $ 350,448,960

Self Administration Transacti_3

Self Administration Transaction (Tables)	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Summary of Reconciles Total Consideration Transferred	The estimated fair value of the consideration transferred totaled approximately $111.3 million and consisted of the following: Estimated Fair Value of Consideration Transferred Cash (1) $ 3,918,185 Class A-1 Units 63,643,000 Class A-2 Units (contingent earnout) 30,900,000 Total Consideration Transferred 98,461,185 Fair value of our preexisting 50% equity interests 12,800,000 Total $ 111,261,185
Summary of Relative Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed: Identifiable Assets Acquired at Fair Value Cash and cash equivalents $ 36,443 Restricted cash 94,999 Land 975,000 Building 5,389,000 Site Improvements 136,000 Equipment, furniture and fixtures 651,000 Investments in Managed REITs 5,600,000 Other assets 1,084,629 Intangibles - customer relationships 1,600,000 Trademarks 19,800,000 Intangibles - management contracts 24,900,000 Total identifiable assets acquired $ 60,267,071 Identifiable Liabilities Assumed at Fair Value Debt $ 19,219,126 Accounts payable and accrued expenses 722,286 Deferred tax liabilities, net 7,415,654 Total liabilities assumed $ 27,357,066 Net identifiable assets acquired $ 32,910,005 Goodwill 78,372,980 Non-controlling interest related to consolidated Tenant Programs joint ventures (21,800 ) Net assets acquired $ 111,261,185

Pro Forma Financial Informati_2

Pro Forma Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Business Acquisition Pro Forma Information [Abstract]
Summary of Consolidated Results of Operations on Pro Forma Basis	Year Ended December 31, 2020 Year Ended December 31, 2019 Pro forma revenue $ 124,024,363 $ 113,847,174 Pro forma operating expenses $ (144,097,906 ) $ (103,065,650 ) Pro forma net income (loss) attributable to common stockholders $ (53,586,219 ) $ (27,522,507 )

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2020
Schedule of Summarized Real Estate Secured Debt	The Company’s debt is summarized as follows: Encumbered Property December 31, 2020 December 2019 Interest Rate Maturity Date KeyBank CMBS Loan (1) $ 95,000,000 $ 95,000,000 3.89 % 8/1/2026 KeyBank Florida CMBS Loan (2) 52,000,000 52,000,000 4.65 % 5/1/2027 Midland North Carolina CMBS Loan (3) 46,427,994 47,048,287 5.31 % 8/1/2024 Canadian CitiBank Loan (4)(12) 87,337,110 85,500,660 2.72 % 10/9/2021 CMBS SASB Loan (5)(12) 235,000,000 235,000,000 3.13 % (11) 2/9/2022 CMBS Loan (6) 104,000,000 104,000,000 5.00 % 2/1/2029 Secured Loan (7) (8)(12) 85,512,000 85,512,000 3.00 % 1/24/2022 Stoney Creek Loan (9)(12) 5,712,058 5,591,950 4.65 % 10/1/2021 Torbarrie Loan (10)(12) 6,423,863 5,936,996 4.65 % 9/1/2021 Ladera Office Loan 4,099,152 4,179,994 4.29 % 11/1/2026 Premium on secured debt, net 461,823 592,505 Debt issuance costs, net (4,021,767 ) (7,629,390 ) Total debt $ 717,952,233 $ 712,733,002 (1) Boynton Beach, and Lancaster II) with monthly interest only payments until September 2021, at which time both interest and principal payments will be due monthly. The separate assets of these encumbered properties are not available to pay our other debts . (2) (3) (4) e purchased interest rate caps that cap CDOR at 3.0% until October 15, 2021. (5) (6) (7) (8) (9) (10) (11) on this loan (12) On March 17, 2021, these loans were paid off in full in conjunction with the SST IV Merger. See Note 16 – Subsequent Events for additional information.
Summary of Merger Financings	On January 24, 2019, in conjunction with the SSGT Mergers, we, through certain wholly-owned special purpose entities, entered into various financings (“SSGT Merger Financings”), as follows: Merger Financings Principal Borrowing as of Merger Date CMBS SASB Loan $ 235,000,000 CMBS Loan 104,000,000 Secured Loan 89,178,000 Senior Term Loan 72,000,000 Total $ 500,178,000
Schedule of Payment Related to Merger Consideration and Repayment of Debt	The proceeds from the SSGT Merger Financings were primarily used to facilitate the SSGT Mergers as previously described, including the payment of the SSGT merger consideration and the repayment, in full, of certain of our debt, as follows: Merger Financings Principal Repaid Raleigh/Myrtle Beach promissory note $ 11,862,471 Amended KeyBank Credit Facility 98,782,500 Oakland and Concord loan 19,443,753 $11M KeyBank Subordinate Loan 11,000,000 Total $ 141,088,724
Future Principal Payment Requirements on Outstanding Debt	The following table presents the future principal payment requirements on outstanding debt as of December 31, 2020: 2021 $ 100,767,277 2022 323,426,414 2023 3,384,140 2024 47,043,508 2025 2,869,187 2026 and thereafter 244,021,651 Total payments 721,512,177 Premium on secured debt, net 461,823 Debt issuance costs, net (4,021,767 ) Total $ 717,952,233
Strategic Storage Trust IV, Inc.
Future Principal Payment Requirements on Outstanding Debt	The following table presents the future principal payment requirements on outstanding debt as of March 17, 2021: 2021 $ 1,100,433 2022 2,914,414 2023 44,052,298 2024 248,046,008 2025 2,869,187 2026 and thereafter 534,406,353 Total payments $ 833,388,693

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Derivative Financial Instruments	The following table summarizes the terms of our derivative financial instruments as of December 31, 2020: Notional Amount Strike Effective Maturity Interest Rate Swap: LIBOR Swap $ 235,000,000 1.79 % June 15, 2019 February 15, 2022 Interest Rate Caps: LIBOR Cap $ 80,000,000 0.50 % August 3, 2020 August 2, 2021 CDOR Cap 99,300,000 (1) 3.00 % October 11, 2018 October 15, 2021 CDOR Cap 1,000,000 (1) 3.00 % March 28, 2019 October 15, 2021 CDOR Cap 11,700,000 (1) 3.00 % May 28, 2019 October 15, 2021 Foreign Currency Forward: Denominated in CAD $ 95,000,000 (1) 1.334 February 10, 2020 February 10, 2021 (2) (1) Notional amounts shown are denominated in CAD. (2) On February 10, 2021, we rolled this currency forward into a new $95 million CAD currency forward with a strike price of 1.334, and a maturity date of April 12, 2021 The following table summarizes the terms of our derivative financial instruments as of December 31, 2019: Notional Amount Strike Effective Date Maturity Interest Rate Swaps: LIBOR Swap $ 85,512,000 2.61 % January 24, 2019 August 1, 2020 (3) LIBOR Swap 235,000,000 1.79 % June 15, 2019 February 15, 2022 Interest Rate Cap: CDOR Cap $ 99,300,000 (1) 3.00 % October 11, 2018 October 15, 2021 CDOR Cap 1,000,000 (1) 3.00 % March 28, 2019 October 15, 2021 CDOR Cap 11,700,000 (1) 3.00 % May 28, 2019 October 15, 2021 Foreign Currency Forward: Denominated in CAD $ 95,000,000 (1) 1.323 December 9, 2019 February 10, 2020 (2) (1) Notional amount shown is denominated in CAD. (2) We settled this forward on February 10, 2020, receiving a net settlement of approximately $0.5 million and simultaneously entered into another $95 million CAD foreign currency forward with a maturity date of February 10, 2021 . (3) On August 3, 2020, we entered into a LIBOR interest rate cap for a notional amount of $80 million which caps LIBOR at 0.5% through August 2, 2021.
Schedule of Fair Value of Derivative Financial Instruments and Classification In Consolidated Balance Sheets	The following table presents a gross presentation of the fair value of our derivative financial instruments as well as their classification on our consolidated balance sheets as of December 31, 2020 and 2019: Asset/Liability Derivatives Fair Value Balance Sheet Location December 31, 2020 December 31, 2019 Interest Rate Swaps Accounts payable and accrued liabilities $ 4,379,424 $ 1,695,140 Interest Rate Caps Other assets $ — $ 28,847 Foreign Currency Hedges Accounts payable and accrued liabilities $ 3,270,910 $ 1,425,632

Segment Disclosures (Tables)

Segment Disclosures (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Summary of Reportable Segments	The following tables summarize information for the reportable segments for the periods presented: Year Ended December 31, 2020 Managed REIT Corporate Self Storage Platform and Other Total Revenues: Self storage rental revenue $ 104,888,883 $ — $ — $ 104,888,883 Ancillary operating revenue 5,286,042 — — 5,286,042 Managed REIT Platform revenue — 8,048,630 — 8,048,630 Reimbursable costs from Managed REITs — 5,800,808 — 5,800,808 Total revenues 110,174,925 13,849,438 — 124,024,363 Operating expenses: Property operating expenses 38,305,199 — — 38,305,199 Managed REIT Platform expense — 2,806,921 — 2,806,921 Reimbursable costs from Managed REITs — 5,800,808 — 5,800,808 General and administrative — — 16,471,199 16,471,199 Depreciation 31,773,526 — 521,101 32,294,627 Intangible amortization expense 5,234,312 4,542,804 — 9,777,116 Other property acquisition expenses 1,366,092 — — 1,366,092 Contingent earnout adjustment — (2,500,000 ) — (2,500,000 ) Impairment of goodwill and intangible assets — 36,465,732 — 36,465,732 Impairment of investments in Managed REITs — 4,376,879 — 4,376,879 Total operating expenses 76,679,129 51,493,144 16,992,300 145,164,573 Operating income (loss) 33,495,796 (37,643,706 ) (16,992,300 ) (21,140,210 ) Other income (expense): Interest expense (32,417,179 ) — (180,434 ) (32,597,613 ) Interest expense – accretion of fair market value of secured debt 130,682 — — 130,682 Interest expense – debt issuance costs (3,577,730 ) — (8,651 ) (3,586,381 ) Other 1,708,026 4,557,129 (278,436 ) 5,986,719 Net loss $ (660,405 ) $ (33,086,577 ) $ (17,459,821 ) $ (51,206,803 ) Year Ended December 31, 2019 Managed REIT Corporate Self Storage Platform and Other Total Revenues: Self storage rental revenue $ 99,494,560 $ — $ — $ 99,494,560 Ancillary operating revenue 3,706,700 — — 3,706,700 Managed REIT Platform revenue — 3,068,306 — 3,068,306 Reimbursable costs from Managed REITs — 3,258,983 — 3,258,983 Total revenues 103,201,260 6,327,289 — 109,528,549 Operating expenses: Property operating expenses 35,723,111 — — 35,723,111 Property operating expenses – affiliates 6,605,670 — — 6,605,670 Managed REIT Platform expense — 2,739,556 — 2,739,556 Reimbursable costs from Managed REITs — 3,258,983 — 3,258,983 General and administrative — — 10,461,453 10,461,453 Depreciation 29,305,979 — 299,299 29,605,278 Intangible amortization expense 9,051,083 2,442,311 — 11,493,394 Contingent earnout adjustment — — 200,000 200,000 Self administration transaction expenses — — 1,572,238 1,572,238 Acquisition expenses – affiliates 84,061 — — 84,061 Other property acquisition expenses 141,489 — — 141,489 Total operating expenses 80,911,393 8,440,850 12,532,990 101,885,233 Gain on sale of real estate 3,944,696 — — 3,944,696 Operating income (loss) 26,234,563 (2,113,561 ) (12,532,990 ) 11,588,012 Other income (expense): Interest expense (37,469,725 ) — (93,522 ) (37,563,247 ) Interest expense – accretion of fair market value of secured debt 131,611 — — 131,611 Interest expense – debt issuance costs (3,990,421 ) — (6,255 ) (3,996,676 ) Net loss on extinguishment of debt (2,635,278 ) — (12,355 ) (2,647,633 ) Gain resulting from acquisition of unconsolidated affiliates 8,017,353 — — 8,017,353 Other (1,159,570 ) 534,612 — (624,958 ) Net loss $ (10,871,467 ) $ (1,578,949 ) $ (12,645,122 ) $ (25,095,538 )
Summary of Total Assets by Segment	The following table summarizes our total assets by segment: Segments December 31, 2020 December 31, 2019 Self Storage $ 1,172,178,148 (1) $ 1,175,887,634 (1) Managed REIT Platform 44,482,625 (1) 73,939,002 (1) Corporate and Other 65,560,284 61,607,095 Total assets $ 1,282,221,057 $ 1,311,433,731 (1) Included in the assets of the Self Storage and the Managed REIT Platform segments as of December 31, 2020, are approximately $45.3 million, and $8.4 million of goodwill, respectively. As of December 31, 2019, such amounts were approximately $45.3 million and $33.1 million of goodwill, respectively.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Summary of Related Party Costs	Pursuant to the terms of the agreements described above, the following table summarizes related party costs incurred and paid by us for the years ended December 31, 2019 and 2020, as well as any related amounts payable as of December 31, 2019 and 2020: Year Ended December 31, 2019 Year Ended December 31, 2020 Incurred Paid Payable Incurred Paid Payable Expensed Operating expenses $ 975,985 $ 1,185,370 $ — $ — $ — $ — Transfer Agent fees 324,943 374,404 — 525,108 489,108 36,000 Asset management fees 3,622,558 3,622,558 — — — — Property management fees 2,983,111 2,983,111 — — — — Acquisition expenses 84,061 84,061 — — — — Capitalized Acquisition costs 235,932 235,932 — — — — Self Administration Transaction working capital true-up 493,785 493,785 — — — — Additional paid-in capital Stockholder servicing fee (1) — 667,651 1,277,340 — 645,911 631,429 Total $ 8,720,375 $ 9,646,872 $ 1,277,340 $ 525,108 $ 1,135,019 $ 667,429 (1) th
Summary of Related Party Fees and Reimbursable Costs	Pursuant to the terms of the various agreements described above for the Managed REITs, the following summarizes the related party fees for the years ended December 31, 2020 and 2019: Managed REIT Platform Revenues Year Ended December 31, 2020 Year Ended December 31, 2019 Advisory agreement – SST IV (1) $ 3,211,661 $ 1,153,137 Advisory agreement – SSGT II 1,210,529 310,786 Property management agreement – SST IV (1) 1,429,632 602,162 Property management agreement – SSGT II 371,751 91,594 Tenant Program revenue – SST IV (1) 893,315 254,148 Tenant Program revenue – SSGT II 257,602 37,269 Other Managed REIT revenue (2) 674,140 619,210 Total $ 8,048,630 $ 3,068,306 (1) On March 17, 2021, we acquired SST IV. Please see Note 16 – Subsequent Events for additional information. (2) Such revenues primarily includes construction management, development fees, and other miscellaneous revenues.

Equity Based Compensation (Tabl

Equity Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Time Based Awards
Schedule of Un-Vested Share Activity	The following table summarizes the activity related to our time based awards: Restricted Stock LTIPs Time Based Award Grants Shares Weighted-Average Grant-Date Fair Value Units Weighted-Average Grant-Date Fair Value Unvested at December 31, 2018 21,438 $ 10.38 $ — $ — Granted 251,993 9.48 — — Vested (7,625 ) 10.29 — — Forfeited — — — — Unvested at December 31, 2019 265,806 9.53 — — Granted 72,383 9.78 214,521 9.09 Vested (82,351 ) 9.55 (53,630 ) 9.09 Forfeited (6,567 ) 9.78 — — Unvested at December 31, 2020 249,271 $ 9.58 160,891 $ 9.09
Performance Based Awards
Schedule of Un-Vested Share Activity	The following table summarizes our activity related to our performance based awards: Restricted Stock LTIPs Performance Based Award Grants Shares Weighted-Average Grant-Date Fair Value Units Weighted-Average Grant-Date Fair Value Unvested at December 31, 2019 — $ — — $ — Granted 5,752 9.78 130,638 9.09 Vested — — — — Forfeited — — — — Unvested at December 31, 2020 5,752 $ 9.78 130,638 $ 9.09

Selected Quarterly Data (Unau_2

Selected Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Financial Information	The following is a summary of quarterly financial information for the years ended December 31, 2020 and 2019: Three months ended March 31, 2020 June 30, 2020 September 30, 2020 December 31, 2020 Total revenues $ 30,298,123 $ 29,469,545 $ 31,363,122 $ 32,893,573 Total operating expenses $ 61,368,274 $ 27,497,027 $ 26,992,137 $ 29,307,135 Operating income (loss) $ (31,070,151 ) $ 1,972,518 $ 4,370,985 $ 3,586,438 Net loss $ (37,743,581 ) $ (7,062,841 ) $ (4,456,497 ) $ (1,943,884 ) Net loss attributable to common stockholders $ (35,073,951 ) $ (8,491,421 ) $ (6,259,114 ) $ (4,529,908 ) Net loss per Class A Share-basic and diluted $ (0.59 ) $ (0.14 ) $ (0.10 ) $ (0.08 ) Net loss per Class T Share-basic and diluted $ (0.59 ) $ (0.14 ) $ (0.10 ) $ (0.08 ) Three months ended March 31, 2019 June 30, 2019 September 30, 2019 December 31, 2019 Total revenues $ 23,883,325 $ 25,980,517 $ 29,588,014 $ 30,076,693 Total operating expenses $ 21,934,203 $ 25,211,611 $ 27,773,486 $ 26,965,933 Operating income $ 1,949,122 $ 768,906 $ 1,814,528 $ 7,055,456 Net loss $ (8,948,317 ) $ (2,283,972 ) $ (9,541,579 ) $ (4,321,670 ) Net loss attributable to common stockholders $ (8,891,558 ) $ (2,212,445 ) $ (8,214,826 ) $ (5,431,504 ) Net loss per Class A Share-basic and diluted $ (0.15 ) $ (0.04 ) $ (0.14 ) $ (0.09 ) Net loss per Class T Share-basic and diluted $ (0.15 ) $ (0.04 ) $ (0.14 ) $ (0.09 )

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Summary of Wholly-Owned Real Estate Portfolio	A summary of SST IV’s wholly-owned real estate portfolio is as follows (as of December 31, 2020): State No. of Properties Units (1) Sq. Ft. (net) (2) % of Total Rentable Sq. Ft. Physical Occupancy % (3) Rental Income % (4) Arizona 1 720 79,000 3.9 % 88.8 % 3.0 % California 2 1,620 154,000 7.5 % 78.5 % 6.7 % Florida 5 3,830 519,100 25.4 % 87.7 % 24.9 % North Carolina 2 1,910 176,500 8.6 % 85.8 % 7.9 % New Jersey 1 1,900 158,000 7.7 % 90.5 % 11.0 % Nevada 2 1,220 131,500 6.4 % 91.9 % 8.0 % Texas 8 4,610 605,900 29.7 % 92.3 % 25.3 % Virginia 1 830 71,000 3.5 % 94.9 % 5.2 % Washington 2 1,180 146,000 7.3 % 89.2 % 8.0 % Total 24 17,820 2,041,000 100 % 89.1 % 100 % (1) (2)Includes all rentable square feet, consisting of storage units and parking (approximately 250,000 square feet). (3)Represents the occupied square feet of all facilities SST IV owned in a state divided by total rentable square feet of all the facilities SST IV owned in such state as of December 31, 2020. (4)Represents rental income (excludes administrative fees, late fees, and other ancillary income) for all facilities SST IV owned in a state divided by SST IV’s total rental income for the month ended December 31, 2020.

Organization - Additional Infor

Organization - Additional Information (Detail) $ / shares in Units, ft² in Millions, $ in Millions

Mar. 17, 2021USD ($)ft²StorageFacilityStateStorageUnitRealEstateVenture

Mar. 17, 2021CAD ($)StorageFacilityStorageUnitRealEstateVenture

Nov. 10, 2020StorageFacilityStateRealEstateVenture

Apr. 20, 2020$ / shares

Oct. 29, 2019USD ($)

Jan. 24, 2019

Aug. 02, 2013USD ($)

Jan. 31, 2017USD ($)shares

Jan. 31, 2014USD ($)

Dec. 31, 2020USD ($)ft²StorageFacilityStatePropertyStorageUnitshares

Oct. 26, 2020USD ($)

May 14, 2020$ / shares

Dec. 31, 2019shares

Oct. 01, 2018StorageFacilityState

Nov. 30, 2016shares

Organization And Nature Of Operations [Line Items]

Date of formation of company

Jan. 8, 2013

Number of self storage facilities | StorageFacility

112

Number of states located for self storage facilities | State

17

10

Number of operating self storage facilities | StorageFacility

28

Number of parcels of land being developed into self storage facilities | StorageFacility

1

Line of credit facility, term of extension options

1 year

Shares issuable pursuant to distribution reinvestment plan

$ 95,000,000

Maximum purchase commitment amount

$ 200,000,000

Initial closing amount

$ 150,000,000

Second and final closing amount

$ 50,000,000

Preferred stock, dividend rate, percentage

6.25%

Advisor, SS Toronto REIT Advisors, Inc., and SS Growth Advisor, LLC.

Organization And Nature Of Operations [Line Items]

Percentage of limited partnership interests

86.50%

SAM and Affiliates

Organization And Nature Of Operations [Line Items]

Percentage of limited partnership interests owned by noncontrolling owners

13.50%

Strategic Storage Operating Partnership II, L.P.

Organization And Nature Of Operations [Line Items]

Date of formation of company

Jan. 9, 2013

Advisor purchased a limited partnership interest in Operating Partnership

$ 200,000

Initial capital contribution

$ 1,000

Fifth To Tenth Anniversary

Organization And Nature Of Operations [Line Items]

Dividend rate percentage of increase on preferred stock

0.75%

After Tenth Anniversary

Organization And Nature Of Operations [Line Items]

Dividend rate percentage of increase on preferred stock

0.75%

Distribution Reinvestment Plan

Organization And Nature Of Operations [Line Items]

Common Stock, shares authorize | shares

100,900,000

Description for termination of offering

The DRP Offering may be terminated at any time upon 10 days’ prior written notice to stockholders.

Maximum | Tenth Anniversary

Organization And Nature Of Operations [Line Items]

Preferred stock, dividend rate, percentage

9.00%

Primary Offering

Organization And Nature Of Operations [Line Items]

Initial public offering commenced period description

commenced our initial public offering in January 2014

Primary Offering | Maximum

Organization And Nature Of Operations [Line Items]

Common stock, value authorize

$ 1,000,000,000

Class A Common stock

Organization And Nature Of Operations [Line Items]

Common Stock, shares authorize | shares

350,000,000

350,000,000

Estimated value per common share | $ / shares

$ 10.40

Class A Common stock | Distribution Reinvestment Plan

Organization And Nature Of Operations [Line Items]

Selling price per share | $ / shares

$ 10.40

Class T Common stock

Organization And Nature Of Operations [Line Items]

Common Stock, shares authorize | shares

350,000,000

350,000,000

Estimated value per common share | $ / shares

$ 10.40

Class T Common stock | Distribution Reinvestment Plan

Organization And Nature Of Operations [Line Items]

Selling price per share | $ / shares

$ 10.40

Common Stock | Class A Common stock | Distribution Reinvestment Plan

Organization And Nature Of Operations [Line Items]

Gross proceeds from issuance of common stock

$ 55,500,000

Number of common stock issued | shares

5,300,000

Common Stock | Class A Common stock | Primary Offering

Organization And Nature Of Operations [Line Items]

Number of shares issued in offering | shares

48,000,000

Gross proceeds from issuance of common stock

$ 493,000,000

Common Stock | Class T Common stock | Distribution Reinvestment Plan

Organization And Nature Of Operations [Line Items]

Gross proceeds from issuance of common stock

$ 8,500,000

Number of common stock issued | shares

800,000

Common Stock | Class T Common stock | Primary Offering

Organization And Nature Of Operations [Line Items]

Number of shares issued in offering | shares

7,000,000

Gross proceeds from issuance of common stock

$ 73,000,000

Subsequent Event | Key Bank

Organization And Nature Of Operations [Line Items]

Outstanding balance on credit facility

$ 500,000,000

Proceeds from line of credit

451,000,000

Subsequent Event | Credit Facility Revolver | Key Bank

Organization And Nature Of Operations [Line Items]

Outstanding balance on credit facility

$ 250,000,000

Line of credit facility, initial term

3 years

3 years

Line of credit facility, term of extension options

1 year

1 year

Subsequent Event | Credit Facility Term Loan | Key Bank

Organization And Nature Of Operations [Line Items]

Outstanding balance on credit facility

$ 250,000,000

Line of credit facility, initial term

5 years

5 years

Line of credit facility, term of extension options

0 years

0 years

Subsequent Event | US Borrowings | Credit Facility Revolver | Key Bank

Organization And Nature Of Operations [Line Items]

Proceeds from line of credit

$ 199,000,000

Subsequent Event | US Borrowings | Credit Facility Term Loan | Key Bank

Organization And Nature Of Operations [Line Items]

Proceeds from line of credit

150,000,000

Subsequent Event | CAD Borrowings | Credit Facility Revolver | Key Bank

Organization And Nature Of Operations [Line Items]

Proceeds from line of credit

2,000,000

$ 2.5

Subsequent Event | CAD Borrowings | Credit Facility Term Loan | Key Bank

Organization And Nature Of Operations [Line Items]

Proceeds from line of credit

$ 100,000,000

$ 124.7

SST IV Merger Agreement

Organization And Nature Of Operations [Line Items]

Number of operating self storage facilities | RealEstateVenture

3

Number of parcels of land being developed into self storage facilities | RealEstateVenture

3

SST IV Merger Agreement | Canada

Organization And Nature Of Operations [Line Items]

Number of self storage facilities | StorageFacility

24

Number of states located for self storage facilities | State

9

SST IV Merger Agreement | Subsequent Event

Organization And Nature Of Operations [Line Items]

Number of self storage facilities | StorageFacility

24

24

Number of states located for self storage facilities | State

9

Number of self storage units | StorageUnit

18,000

18,000

Net rentable area, primarily self storage space | ft²

2

Percentage of voting membership interest

50.00%

SST IV Merger Agreement | Subsequent Event | Canada

Organization And Nature Of Operations [Line Items]

Number of unconsolidated real estate ventures | RealEstateVenture

6

6

Number of operating self storage facilities | StorageFacility

3

Number of parcels of land being developed into self storage facilities | StorageFacility

3

Managed REITS

Organization And Nature Of Operations [Line Items]

Number of properties owned by Managed REITs which is operated by the company | Property

37

Number of self storage units | StorageUnit

30,000

Net rentable area, primarily self storage space | ft²

3.1

SmartStop Asset Management

Organization And Nature Of Operations [Line Items]

Percentage of non-voting equity owned

15.00%

SmartStop Asset Management | Investments in Majority-owned Subsidiaries

Organization And Nature Of Operations [Line Items]

Percentage of non-voting equity owned

15.00%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) shares in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020USD ($)Trademarkshares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares	Jan. 31, 2021USD ($)	Jan. 31, 2020USD ($)	Jun. 28, 2019USD ($)	Jan. 31, 2019USD ($)
Summary Of Significant Accounting Policies [Line Items]
Investments in Managed REITs							$ 5,600,000
Payments to acquire intangible assets		$ 0	$ 13,600,000	$ 0
Business acquisition, transaction costs		1,400,000	200,000	1,100,000
Impairment losses of real property assets recognized		0	0	0
Goodwill	$ 53,643,331	53,643,331	78,372,980				$ 78,372,980
Trademarks acquired amount			0
Trademarks acquired	16,194,118	16,194,118	19,688,167
Gross amounts of lease intangibles	47,300,000	47,300,000	46,800,000
Accumulated amortization	45,700,000	45,700,000	40,400,000
Redemptions of common stock	2,000,000	$ 2,000,000	$ 4,900,000	$ 8,300,000		$ 400,000		$ 1,300,000
Redemptions of common stock (in shares) | shares		0.2	0.5	0.9
Additional net real estate related assets recorded	1,095,960,840	$ 1,095,960,840	$ 1,102,370,599
Net deferred tax liability	8,380,215	8,380,215	6,609,571
Depreciation and amortization		42,071,743	41,098,672	$ 22,802,691
Deferred tax benefit		$ 5,900,000	800,000
Minimum percentage of ordinary taxable income to be distributed to stockholders		90.00%
Net deferred tax liability	8,400,000	$ 8,400,000	6,600,000
Current income tax expense		100,000	0
Net combined foreign, federal, and state income tax benefit		(5,800,000)	(800,000)
Unrecognized tax benefits	0	0	0
Interest or penalties related to uncertain tax position		$ 0	0
Open tax year		2016 2017 2018 2019
Bad debt expense				1,200,000
New Accounting Pronouncement, Early Adoption, Effect
Summary Of Significant Accounting Policies [Line Items]
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 1,400,000	1,700,000
Rental Income | Geographic Concentration Risk | Canada
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk Percentage1		24.00%
Rental Income | Geographic Concentration Risk | FLORIDA
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk Percentage1		21.00%
Rental Income | Geographic Concentration Risk | Greater Toronto Area of Canada
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk Percentage1		13.00%
Canadian Properties
Summary Of Significant Accounting Policies [Line Items]
Net deferred tax liability	5,800,000	$ 5,800,000
Gross deferred tax liability	9,600,000	9,600,000
Gross deferred tax asset	3,800,000	3,800,000
Out-of-Period Adjustment
Summary Of Significant Accounting Policies [Line Items]
Additional net real estate related assets recorded	6,900,000	6,900,000
Net deferred tax liability	5,800,000	5,800,000
Depreciation and amortization	700,000
Deferred tax benefit	1,800,000
Decrease in net loss related to adjustment	1,100,000
Subsequent Event
Summary Of Significant Accounting Policies [Line Items]
Redemptions of common stock					$ 700,000
Real Estate Investment
Summary Of Significant Accounting Policies [Line Items]
Gains (losses) on exchange rate changes in equity investments recorded in other income (expense)		$ 600,000	900,000
Class T Common stock
Summary Of Significant Accounting Policies [Line Items]
Monthly stockholder servicing fee accrual description		accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Redeemable Common Stock
Summary Of Significant Accounting Policies [Line Items]
Redemptions of common stock	1,300,000	$ 1,300,000	4,500,000	$ 7,000,000
Non Revolving Debt
Summary Of Significant Accounting Policies [Line Items]
Debt issuance cost, gross	12,000,000	12,000,000	11,900,000
Accumulated amortization of debt issuance costs	7,900,000	7,900,000	4,300,000
Self Administration Transaction
Summary Of Significant Accounting Policies [Line Items]
Total estimated future amortization expense of intangible assets, year 2021	2,900,000	2,900,000
Total estimated future amortization expense of intangible assets, year 2022	2,900,000	2,900,000
Total estimated future amortization expense of intangible assets, year 2023	2,900,000	2,900,000
Total estimated future amortization expense of intangible assets, year 2024	1,800,000	1,800,000
Total estimated future amortization expense of intangible assets, year 2025	300,000	300,000
Self Storage
Summary Of Significant Accounting Policies [Line Items]
Goodwill	45,300,000	45,300,000	45,300,000
Total estimated future amortization expense of intangible assets, year 2021	100,000	100,000
Total estimated future amortization expense of intangible assets, year 2022	100,000	100,000
Total estimated future amortization expense of intangible assets, year 2023	100,000	100,000
Total estimated future amortization expense of intangible assets, year 2024	100,000	100,000
Total estimated future amortization expense of intangible assets, year 2025	1,000,000	1,000,000
Total estimated future amortization expense of intangible assets, thereafter	1,000,000	$ 1,000,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		5 years
SmartStop Trademark
Summary Of Significant Accounting Policies [Line Items]
Amortization period of intangible assets		8 years
Strategic Storage Trademark
Summary Of Significant Accounting Policies [Line Items]
Amortization period of intangible assets		7 years
Total estimated future amortization expense of intangible assets, year 2021	140,000	$ 140,000
Total estimated future amortization expense of intangible assets, year 2022	140,000	140,000
Total estimated future amortization expense of intangible assets, year 2023	140,000	140,000
Total estimated future amortization expense of intangible assets, year 2024	70,000	70,000
Total estimated future amortization expense of intangible assets, thereafter	0	$ 0
Trademarks
Summary Of Significant Accounting Policies [Line Items]
Amortization period of intangible assets		15 years
Self Administration Transaction
Summary Of Significant Accounting Policies [Line Items]
Goodwill	78,400,000	$ 78,400,000
Trademarks acquired	19,800,000	$ 19,800,000
Number of trademarks acquired | Trademark		2
Gross amounts of lease intangibles	18,100,000	$ 18,100,000	26,500,000
Accumulated amortization	7,300,000	7,300,000	2,900,000
Deferred tax liability on intangible assets acquired	2,600,000	$ 2,600,000
Primary Offering Former Dealer Manager Agreement | Class T Common stock
Summary Of Significant Accounting Policies [Line Items]
Percentage of gross proceeds from sale of shares		10.00%
Primary Offering Former Dealer Manager Agreement | Class A Common stock
Summary Of Significant Accounting Policies [Line Items]
Percentage of gross proceeds from sale of shares		10.00%
Investments in and Advances to Managed REITs
Summary Of Significant Accounting Policies [Line Items]
Investments in Managed REITs	15,100,000	$ 15,100,000	5,800,000
Investments in and Advances to Managed REITs | Managed REITs
Summary Of Significant Accounting Policies [Line Items]
Receivables due from related parties	$ 500,000	$ 500,000	$ 300,000

Estimated Useful Lives used to

Estimated Useful Lives used to Depreciate Real Property Assets (Detail)	12 Months Ended
	Dec. 31, 2020
Land
Property Plant And Equipment [Line Items]
Standard Depreciable Life	Not Depreciated
Buildings | Minimum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	30 years
Buildings | Maximum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	40 years
Site Improvements | Minimum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	7 years
Site Improvements | Maximum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	10 years

Summary of Fixed Rate Notes Pay

Summary of Fixed Rate Notes Payable (Detail) - Fixed Rate Secured Debt - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 316,000,000	$ 311,700,000
Carrying Value	$ 301,988,969	$ 302,820,786

Schedule of Activity in Real Es

Schedule of Activity in Real Estate Facilities (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Real estate facilities
Real estate facilities, beginning balance		$ 1,173,825,368	$ 820,296,026
Facilities acquired through merger with SSGT			334,139,296
Asset disposals			(11,688,993)
Other facility acquisitions			10,430,942
Construction in process placed in service		13,000,000
Impact of foreign exchange rate changes		4,147,798	6,582,603
Improvements and additions			7,565,494
Acquisitions, additions and other	[1]	32,129,416
Real estate facilities, ending balance		1,210,102,582	1,173,825,368
Accumulated depreciation
Accumulated depreciation, beginning balance		(83,692,491)	(54,264,685)
Asset disposals			202,416
Depreciation expense		(31,711,102)	(29,188,668)
Impact of foreign exchange rate changes		(499,452)	(441,554)
Accumulated depreciation, ending balance		$ (115,903,045)	(83,692,491)
Self Administration Transaction
Real estate facilities
Corporate office acquired through Self Administration Transaction			$ 6,500,000
[1]	Such amount includes approximately $13 million of construction in process that was placed into service during the year ended December 31, 2020.

Schedule of Activity in Real _2

Schedule of Activity in Real Estate Facilities (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Construction in process placed in service	$ 13

Real Estate Facilities - Additi

Real Estate Facilities - Additional Information (Detail) $ in Millions	Mar. 24, 2021USD ($)	Mar. 19, 2021USD ($)	Feb. 18, 2021CAD ($)	Nov. 18, 2020CAD ($)	Sep. 01, 2020CAD ($)	Jul. 21, 2020USD ($)ft²StorageFacility	Jun. 02, 2020CAD ($)	Jul. 11, 2019USD ($)	Jan. 24, 2019USD ($)shares	Oct. 01, 2018USD ($)StorageFacilityState	Dec. 31, 2020State
Restructuring Cost And Reserve [Line Items]
Repayment of debt									$ 141,088,724
Principal borrowing									500,178,000
Number of operating self storage facilities | StorageFacility										28
Number of states for self storage facilities | State										10	17
Number of parcels of land being developed into self storage facilities | StorageFacility										1
Senior Term Loan
Restructuring Cost And Reserve [Line Items]
Principal borrowing									72,000,000
Fixed Rate Secured Debt
Restructuring Cost And Reserve [Line Items]
Principal borrowing									$ 89,178,000
SS Growth Advisor LLC | Capital Unit, Class A
Restructuring Cost And Reserve [Line Items]
Business acquisition partnership units issued | shares									396,000
Etobicoke Property
Restructuring Cost And Reserve [Line Items]
Purchase price							$ 2.2
Scarborough Property
Restructuring Cost And Reserve [Line Items]
Purchase price					$ 2.2
Acquisition of Self Storage Facility | Riverview, Florida
Restructuring Cost And Reserve [Line Items]
Purchase price						$ 800,000
Number of units added to existing self storage facility | StorageFacility						170
Rentable area added to existing self storage facility | ft²						25,000
Jane Street Property
Restructuring Cost And Reserve [Line Items]
Purchase price				$ 8.5
Oakville IQ Property | Subsequent Event
Restructuring Cost And Reserve [Line Items]
Purchase price			$ 25
Henderson Property | Subsequent Event
Restructuring Cost And Reserve [Line Items]
Purchase price		$ 12,600,000
Durango Property | Subsequent Event
Restructuring Cost And Reserve [Line Items]
Purchase price		$ 8,000,000
Baseline III Property | Subsequent Event
Restructuring Cost And Reserve [Line Items]
Purchase price	$ 11,000,000
SS Growth Operating Partnership, L.P
Restructuring Cost And Reserve [Line Items]
Limited partners' capital account, units converted in to percentage									112.70%
Strategic Storage Growth Trust, Inc
Restructuring Cost And Reserve [Line Items]
Purchase price										$ 350,448,960
Repayment of debt									$ 141,000,000
Principal borrowing									$ 500,000,000
Gilbert Property
Restructuring Cost And Reserve [Line Items]
Purchase price								$ 10,000,000

Summary of Reconciles Total Con

Summary of Reconciles Total Consideration Transferred (Detail) - Strategic Storage Growth Trust, Inc	Oct. 01, 2018USD ($)
Fair value of consideration transferred:
Cash	$ 346,231,561
Issuance of limited partnership units in our Operating Partnership to SS Growth Advisor, LLC	4,217,399
Total consideration transferred	$ 350,448,960

Summary of Reconciles Total C_2

Summary of Reconciles Total Consideration Transferred (Parenthetical) (Detail) - USD ($)	Oct. 01, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Debt Instrument Carrying Amount		$ 721,512,177
Business acquisition, transaction costs		$ 1,400,000	$ 200,000	$ 1,100,000
Strategic Storage Growth Trust, Inc
Business Acquisition [Line Items]
Cash consideration	$ 346,231,561
Cash paid to shareholders	320,000,000
Debt Instrument Carrying Amount	19,000,000
Other liabilities paid	5,000,000
Business acquisition, transaction costs	$ 1,000,000

Summary of Relative Fair Values

Summary of Relative Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($)		Dec. 31, 2019		Jun. 28, 2019	Oct. 01, 2018
Assets Acquired:
Land				$ 975,000
Buildings		$ 344,570,238		5,389,000
Construction in process	[1]	5,370,773
Intangible assets				1,600,000
Cash and cash equivalents				36,443
Other assets				1,084,629
Total assets acquired		$ 363,512,776	[2]	60,267,071
Liabilities assumed:
Accounts payable and accrued liabilities				722,286
Total liabilities assumed				27,357,066
Total net assets acquired				$ 32,910,005
Strategic Storage Growth Trust, Inc
Assets Acquired:
Land					$ 62,261,573
Buildings					255,743,767
Site improvements					16,133,956
Construction in process					5,370,773
Intangible assets					13,571,765
Cash and cash equivalents					692,965
Other assets					6,536,838
Total assets acquired					360,311,637
Liabilities assumed:
Debt					5,038,435
Accounts payable and accrued liabilities					4,824,242
Total liabilities assumed					9,862,677
Total net assets acquired					$ 350,448,960
[1]	Construction in process relates to the Torbarrie property in Toronto, Canada, which is a self storage property that was under construction at the time of acquisition. Such facility opened subsequently in 2020.
[2]	The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs.

Summary of Purchase Price Alloc

Summary of Purchase Price Allocation for Real Estate Related Assets Acquired (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2019		Jun. 28, 2019
Business Acquisition [Line Items]
Real Estate Assets		$ 344,570,238		$ 5,389,000
Construction in Process	[1]	5,370,773
Intangibles		13,571,765
Total assets acquired		363,512,776	[2]	$ 60,267,071
Debt Issued or Assumed		199,078,846
2019 Revenue	[3]	21,971,385
2019 Property Operating Income	[3],[4]	$ 11,988,096
SSGT Mergers
Business Acquisition [Line Items]
Acquisition Date	[5]	Jan. 24, 2019
Real Estate Assets	[5]	$ 334,139,296
Construction in Process	[1],[5]	5,370,773
Intangibles	[5]	13,571,765
Total assets acquired	[2],[5]	353,081,834
Debt Issued or Assumed	[5]	193,376,846
2019 Revenue	[3],[5]	21,909,300
2019 Property Operating Income	[3],[4],[5]	$ 12,032,555
Riggs Rd - Gilbert
Business Acquisition [Line Items]
Acquisition Date	[6]	Jul. 11, 2019
Real Estate Assets	[6]	$ 10,430,942
Construction in Process	[1],[6]	0
Intangibles	[6]	0
Total assets acquired	[2],[6]	10,430,942
Debt Issued or Assumed	[6]	5,702,000
2019 Revenue	[3],[6]	62,085
2019 Property Operating Income	[3],[4],[6]	$ (44,459)
[1]	Construction in process relates to the Torbarrie property in Toronto, Canada, which is a self storage property that was under construction at the time of acquisition. Such facility opened subsequently in 2020.
[2]	The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs.
[3]	The operating results of the self storage properties acquired during the year ended December 31, 2019 were included in our consolidated statements of operations since their respective acquisition date
[4]	Property operating income excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses
[5]	SSGT had stated investment objectives to acquire opportunistic self storage properties, including development, and lease-up properties. As a result, many of its properties were not physically and/or economically stabilized as of the date of the SSGT Mergers
[6]	The Gilbert Property was acquired with 0% occupancy as of the acquisition date

Summary of Purchase Price All_2

Summary of Purchase Price Allocation for Real Estate Related Assets Acquired (Parenthetical) (Detail)	Jul. 11, 2019
Gilbert Property
Business Acquisition [Line Items]
Occupancy percentage	0.00%

Self Administration Transacti_4

Self Administration Transaction - Additional Information (Detail)	Jun. 28, 2019USD ($)Employee$ / sharesshares	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Legal fees and fees and expenses of professional and financial advisors			$ 1,600,000
Estimated fair value of consideration transferred	$ 111,300,000
Gain resulting from acquisition of unconsolidated affiliates		$ 0	8,017,353	$ 0
Incremental assets under management		250,000,000
Noncontrolling interests in our Operating Partnership		$ 59,982,111	$ 71,988,256
Agreement term	3 years
Strategic Storage Advisor II, LLC
Business Acquisition [Line Items]
Partnership units exchanged | shares	20,000
Cash proceeds from partnership units exchanged	$ 200,000
Gain (loss) from partners capital account units exchanged	0
Fair value of operating partnership units and special limited partnership interests contributed	18,800,000
Noncontrolling interests in our Operating Partnership	$ 9,100,000
Fair Value, Inputs, Level 3
Business Acquisition [Line Items]
Alternative investment, measurement input	5.16%
Minority and Marketability Discount | Fair Value, Inputs, Level 3
Business Acquisition [Line Items]
Alternative investment, measurement input	0.05
Contribution Agreement
Business Acquisition [Line Items]
Percentage of fair value of equity interests	50.00%
Gain resulting from acquisition of unconsolidated affiliates	$ 8,000,000
Contribution Agreement | SmartStop Asset Management
Business Acquisition [Line Items]
Percentage of voting membership interest	100.00%
Number of on-site self storage employees | Employee	350
Cash	$ 769,126
Debt assumption	$ 15,000,000
Operating Partnership Agreement
Business Acquisition [Line Items]
Number of limited partnership units | shares	20,000
Cash received	$ 200,000
Membership Interest Purchase Agreement | Terrace Rd LLC
Business Acquisition [Line Items]
Percentage of voting membership interest	100.00%
Cash	$ 2,300,000
Debt assumption	4,200,000
Purchase price	$ 6,500,000
Class A-1 Units | Contribution Agreement | SmartStop Asset Management
Business Acquisition [Line Items]
Number of limited partnership units | shares	8,698,956
Class A-1 Units | Operating Partnership Agreement
Business Acquisition [Line Items]
Lock-up expiration date		Jun. 28, 2021
Conversion of stock, description		The Class A-1 Units are subject to the general restrictions on transfer contained in the Operating Partnership Agreement. In addition, until June 28, 2021 (the “Lock-Up Expiration”), the Class A-1 Units may not be sold, pledged, or otherwise transferred or encumbered except in certain limited circumstances set forth in the Contribution Agreement.  The Class A-1 Units are otherwise entitled to all rights and duties of the Class A limited partnership units in the Operating Partnership, including cash distributions and the allocation of any profits or losses in the Operating Partnership.  The Class A-2 Units may convert into Class A-1 Units as earnout consideration, as described below.  The Class A-2 Units are not entitled to cash distributions or the allocation of any profits or losses in the Operating Partnership until the Class A-2 Units are converted into Class A-1 Units.
Class A-2 Units | Contribution Agreement | SmartStop Asset Management
Business Acquisition [Line Items]
Number of limited partnership units | shares	3,283,302
Class A-2 Units | Operating Partnership Agreement
Business Acquisition [Line Items]
Earnout unit exchange per share | $ / shares	$ 10.66
Class of unit expiration year	7 years
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature A
Business Acquisition [Line Items]
Class of unit conversion percentage	33.33%
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature A | Minimum
Business Acquisition [Line Items]
Incremental AUM under operating partnership	$ 300,000,000
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature B
Business Acquisition [Line Items]
Class of unit conversion percentage	33.33%
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature B | Minimum
Business Acquisition [Line Items]
Incremental AUM under operating partnership	$ 500,000,000
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature C
Business Acquisition [Line Items]
Class of unit conversion percentage	33.33%
Class A-2 Units | Operating Partnership Agreement | Unit Conversion Feature C | Minimum
Business Acquisition [Line Items]
Incremental AUM under operating partnership	$ 700,000,000

Self Administration Transacti_5

Self Administration Transaction - Summary of Estimated Fair Value Consideration Transferred (Detail)	Jun. 28, 2019USD ($)
Fair value of consideration transferred:
Total	$ 111,300,000
Contribution Agreement and Membership Interest Purchase Agreement
Fair value of consideration transferred:
Cash	3,918,185
Total consideration transferred	98,461,185
Fair value of our preexisting 50% equity interests	12,800,000
Total	111,261,185
Contribution Agreement and Membership Interest Purchase Agreement | Class A-1 Units
Fair value of consideration transferred:
Units	63,643,000
Contribution Agreement and Membership Interest Purchase Agreement | Class A-2 Units (contingent earnout)
Fair value of consideration transferred:
Units	$ 30,900,000

Self Administration Transacti_6

Self Administration Transaction - Summary of Estimated Fair Value Consideration Transferred (Parenthetical) (Detail) - Contribution Agreement $ in Millions	Jun. 28, 2019USD ($)
Business Acquisition [Line Items]
Fair market value	$ 0.5
Percentage of fair value of equity interests	50.00%

Self Administration Transacti_7

Self Administration Transaction - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019		Jun. 28, 2019
Identifiable Assets Acquired at Fair Value
Cash and cash equivalents				$ 36,443
Restricted cash				94,999
Land				975,000
Building		$ 344,570,238		5,389,000
Site Improvements				136,000
Equipment, furniture and fixtures				651,000
Investments in Managed REITs				5,600,000
Other assets				1,084,629
Intangibles - customer relationships				1,600,000
Trademarks				19,800,000
Intangibles - management contracts				24,900,000
Total assets acquired		363,512,776	[1]	60,267,071
Identifiable Liabilities Assumed at Fair Value
Debt				19,219,126
Accounts payable and accrued expenses				722,286
Deferred tax liabilities, net				7,415,654
Total liabilities assumed				27,357,066
Net identifiable assets acquired				32,910,005
Goodwill	$ 53,643,331	$ 78,372,980		78,372,980
Non-controlling interest related to consolidated Tenant Programs joint ventures				(21,800)
Net assets acquired				$ 111,261,185
[1]	The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs.

Self Administration Transacti_8

Self Administration Transaction - Intangible Assets, Goodwill and Certain Other Assets and Liabilities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill impairment charges	$ 36,465,732	$ 0	$ 0
Self Administration Transaction
Finite Lived Intangible Assets [Line Items]
Impairment charges	11,700,000
Estimated fair value of contingent earnout liability	28,600,000	$ 31,100,000		$ 23,900,000
Self Administration Transaction | COVID-19
Finite Lived Intangible Assets [Line Items]
Investment impairment charges	4,400,000
Self Administration Transaction | Managed REIT Platform
Finite Lived Intangible Assets [Line Items]
Goodwill impairment charges	24,700,000
Deferred tax liabilities	2,400,000
Self Administration Transaction | Trademarks
Finite Lived Intangible Assets [Line Items]
Impairment charges	3,300,000
Self Administration Transaction | Management Contracts of SST IV
Finite Lived Intangible Assets [Line Items]
Impairment charges	2,200,000
Self Administration Transaction | Management Contracts of SSGTII
Finite Lived Intangible Assets [Line Items]
Impairment charges	$ 6,200,000

Pro Forma Financial Informati_3

Pro Forma Financial Information (Unaudited) - Summary of Consolidated Results of Operations on Pro Forma Basis (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition Pro Forma Information [Abstract]
Pro forma revenue	$ 124,024,363	$ 113,847,174
Pro forma operating expenses	(144,097,906)	(103,065,650)
Pro forma net income (loss) attributable to common stockholders	$ (53,586,219)	$ (27,522,507)

Pro Forma Financial Informati_4

Pro Forma Financial Information (Unaudited) - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition Pro Forma Information [Abstract]
Pro forma acquisition related expenses	$ 1,600,000	$ 0

Schedule of Summarized Real Est

Schedule of Summarized Real Estate Secured Debt (Detail) - USD ($)		Jan. 24, 2019	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt Instrument Carrying Amount			$ 721,512,177
Premium on secured debt, net			461,823
Debt issuance costs, net			(4,021,767)
Total			717,952,233	$ 712,733,002
KeyBank CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount		$ 104,000,000
Debt Instrument Fixed Rate		5.00%
Debt Instrument Maturity Date		Feb. 1, 2029
Canadian CitiBank Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[1],[2]		$ 87,337,110	85,500,660
Debt Instrument, Interest Rate	[1],[2]		2.72%
Debt Instrument Maturity Date	[1],[2]		Oct. 9, 2021
CMBS SASB Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[1],[3]		$ 235,000,000	235,000,000
Debt Instrument, Interest Rate	[1],[4],[5]		3.13%
Debt Instrument Maturity Date	[1],[5]		Feb. 9, 2022
Secured Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[1],[6],[7]		$ 85,512,000	85,512,000
Debt Instrument, Interest Rate	[1],[6],[7]		3.00%
Debt Instrument Maturity Date	[1],[6],[7]		Jan. 24, 2022
Stoney Creek Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[1],[8]		$ 5,712,058	5,591,950
Debt Instrument, Interest Rate	[1],[8]		4.65%
Debt Instrument Maturity Date	[1],[8]		Oct. 1, 2021
Torbarrie Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[1],[9]		$ 6,423,863	5,936,996
Debt Instrument, Interest Rate	[1],[9]		4.65%
Debt Instrument Maturity Date	[1],[9]		Sep. 1, 2021
Ladera Office Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount			$ 4,099,152	4,179,994
Debt Instrument, Interest Rate			4.29%
Debt Instrument Maturity Date			Nov. 1, 2026
Fixed Rate Secured Debt
Debt Instrument [Line Items]
Premium on secured debt, net			$ 461,823	592,505
Debt issuance costs, net			(4,021,767)	(7,629,390)
Fixed Rate Secured Debt | KeyBank CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[10]		$ 95,000,000	95,000,000
Debt Instrument Fixed Rate	[10]		3.89%
Debt Instrument Maturity Date	[10]		Aug. 1, 2026
Fixed Rate Secured Debt | KeyBank Florida CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[11]		$ 52,000,000	52,000,000
Debt Instrument Fixed Rate	[11]		4.65%
Debt Instrument Maturity Date	[11]		May 1, 2027
Fixed Rate Secured Debt | Midland North Carolina CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[12]		$ 46,427,994	47,048,287
Debt Instrument Fixed Rate	[12]		5.31%
Debt Instrument Maturity Date	[12]		Aug. 1, 2024
Fixed Rate Secured Debt | CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	[13]		$ 104,000,000	$ 104,000,000
Debt Instrument Fixed Rate	[13]		5.00%
Debt Instrument Maturity Date	[13]		Feb. 1, 2029
[1]	On March 17, 2021, these loans were paid off in full in conjunction with the SST IV Merger. See Note 16 – Subsequent Events for additional information.
[2]	This variable rate loan encumbers 10 of our Canadian properties and the amounts shown above are in USD based on the foreign exchange rate in effect of the dates presented. W e purchased interest rate caps that cap CDOR at 3.0% until October 15, 2021.
[3]	This variable rate loan encumbers 29 properties (Morrisville, Cary, Raleigh, Vallejo, Xenia, Sidney, Troy, Greenville, Washington Court House, Richmond, Connersville, Port St Lucie, Sacramento, Concord, Oakland, Wellington, Doral, Naples, Baltimore, Aurora, Jones Blvd - Las Vegas, Russell Rd - Las Vegas, Riverside, Stockton, Azusa, Romeoville, Elgin, San Antonio, Kingwood). The separate assets of these encumbered properties are not available to pay our other debts
[4]	This loan incurs interest at LIBOR plus 3%, which resulted in an interest rate of 3.13% as of December 31, 2020. However, in June 2019, we purchased an interest rate swap whereby LIBOR is fixed at 1.79% though February 15, 2022, which results in an effective fixed interest rate of 4.79% on this loan
[5]	This variable rate loan encumbers 29 properties (Morrisville, Cary, Raleigh, Vallejo, Xenia, Sidney, Troy, Greenville, Washington Court House, Richmond, Connersville, Port St Lucie, Sacramento, Concord, Oakland, Wellington, Doral, Naples, Baltimore, Aurora, Jones Blvd - Las Vegas, Russell Rd - Las Vegas, Riverside, Stockton, Azusa, Romeoville, Elgin, San Antonio, Kingwood). The separate assets of these encumbered properties are not available to pay our other debts.
[6]	On January 29, 2019, we entered into a $161.2 million notional interest rate swap whereby LIBOR was fixed at approximately 2.6% until August 1, 2020. On October 29, 2019, in connection with the pay off of the Senior Term Loan, we terminated approximately $75.7 million of this interest rate swap which required a settlement payment of approximately $0.6 million. The remaining $85.5 million of the interest rate swap effectively fixed the interest rate on the Secured Loan at 5.1% until August 1, 2020. To continue hedging our interest rate risk related to this loan, we purchased an interest rate cap on August 3, 2020 with a notional amount of $80 million that effectively caps LIBOR at 0.5% through August 2, 2021.
[7]	This variable rate loan encumbers 16 properties (Colorado Springs, Aurora, Phoenix, 3173 Sweeten Creek Rd - Asheville, Elk Grove, Garden Grove, Deaverview Rd - Asheville, Highland Center Blvd - Asheville, Sarasota, Mount Pleasant, Pembroke Pines, Riverview, Eastlake, McKinney, Hualapai Way - Las Vegas, Gilbert). The separate assets of these encumbered properties are not available to pay our other debts.
[8]	This variable rate loan bears interest at a rate of 1.95% plus Royal Bank of Canada Prime Rate, which was approximately 2.45% as of December 31, 2020, and in no event shall the total interest rate fall below 4.65% per annum. The Stoney Creek loan was assumed in the SSGT Mergers and had a balance of approximately $5 million USD as of the SSGT Mergers date. The Stoney Creek loan is secured by a first lien deed of trust on the Stoney Creek property and all improvements thereto, is cross-collateralized with the Torbarrie property, and is guaranteed by the Company. The amounts shown above are in USD based on the foreign exchange rate in effect as of December 31, 2020.
[9]	This variable rate loan bears interest at a rate of 1.95% plus Royal Bank of Canada Prime Rate, which was approximately 2.45% as of December 31, 2020, and in no event shall the total interest rate fall below 4.65% per annum. The Torbarrie loan was assumed in the SSGT Mergers and had no outstanding balance as of the date of the SSGT Mergers. The Torbarrie loan is secured by a first lien deed of trust on the Torbarrie property and all improvements thereto, is cross-collateralized with the Stoney Creek property, and is guaranteed by the Company.
[10]	This fixed rate loan encumbers 29 properties (Whittier, La Verne, Santa Ana, Upland, La Habra, Monterey Park, Huntington Beach, Chico, Lancaster I, Riverside, Fairfield, Lompoc, Santa Rosa, Federal Heights, Aurora, Littleton, Bloomingdale, Crestwood, Forestville, Warren I, Sterling Heights, Troy, Warren II, Beverly, Everett, Foley, Tampa, Boynton Beach, and Lancaster II) with monthly interest only payments until September 2021, at which time both interest and principal payments will be due monthly. The separate assets of these encumbered properties are not available to pay our other debts
[11]	This fixed rate loan encumbers five properties (Pompano Beach, Lake Worth, Jupiter, Royal Palm Beach, and Delray) with monthly interest only payments until June 2022, at which time both interest and principal payments will be due monthly. The separate assets of these encumbered properties are not available to pay our other debts.
[12]	This fixed rate loan encumbers 11 self storage properties (Asheville I, Arden, Asheville II, Hendersonville I, Asheville III, Asheville IV, Asheville V, Asheville VI, Asheville VII, Asheville VIII, and Hendersonville II) with monthly interest only payments until September 2019, at which time both interest and principal payments became due monthly.
[13]	This fixed rate loan encumbers 10 properties (Myrtle Beach I, Myrtle Beach II, Port St. Lucie, Plantation, Sonoma, Las Vegas I, Las Vegas II, Las Vegas III, Ft Pierce, Nantucket Island). The separate assets of these encumbered properties are not available to pay our other debts.

Schedule of Summarized Real E_2

Schedule of Summarized Real Estate Secured Debt (Parenthetical) (Detail)		Aug. 03, 2020USD ($)	Oct. 29, 2019USD ($)	Jan. 24, 2019USD ($)	Dec. 31, 2020USD ($)Property	Jan. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jul. 08, 2019CAD ($)	Jan. 29, 2019USD ($)	Jan. 25, 2019CAD ($)	Oct. 01, 2018USD ($)
Debt Instrument [Line Items]
Derivative, notional amount								$ 95,000,000	$ 161,200,000	$ 90,000,000
Debt Instrument Carrying Amount					$ 721,512,177
Strategic Storage Growth Trust, Inc
Debt Instrument [Line Items]
Debt Instrument Carrying Amount											$ 19,000,000
Royal Bank of Canada Prime Rate
Debt Instrument [Line Items]
Debt Instrument, Interest Rate					2.45%
Interest Rate Cap
Debt Instrument [Line Items]
Derivative, notional amount		$ 80,000,000
Debt Instrument Maturity Date		Aug. 2, 2021
Interest Rate Cap | LIBOR
Debt Instrument [Line Items]
Effective interest rate cap on derivative instrument		0.50%
KeyBank CMBS Loan
Debt Instrument [Line Items]
Debt Instrument Maturity Date				Feb. 1, 2029
Debt Instrument Fixed Rate				5.00%
Debt Instrument Carrying Amount				$ 104,000,000
Canadian Citi Bank Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					10
Canadian Citi Bank Loan | Interest Rate Cap
Debt Instrument [Line Items]
Effective interest rate cap on derivative instrument					3.00%
CMBS SASB Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					29
Debt Instrument Maturity Date	[1],[2]				Feb. 9, 2022
Debt Instrument, Interest Rate	[1],[2],[3]				3.13%
Debt Instrument Carrying Amount	[1],[4]				$ 235,000,000		$ 235,000,000
CMBS SASB Loan | LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate					3.00%
Debt instrument, description of variable rate basis					LIBOR plus 3%
CMBS SASB Loan | Interest Rate Swap
Debt Instrument [Line Items]
Debt Instrument, Interest Rate					4.79%
CMBS SASB Loan | Interest Rate Swap | LIBOR
Debt Instrument [Line Items]
Fixed interest rate					1.79%
Interest rate, maturity date					Feb. 15, 2022
Secured Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					16
Debt Instrument Maturity Date	[1],[5],[6]				Jan. 24, 2022
Debt Instrument, Interest Rate	[1],[5],[6]				3.00%
Debt Instrument Carrying Amount	[1],[5],[6]				$ 85,512,000		85,512,000
Secured Loan | Interest Rate Cap | LIBOR
Debt Instrument [Line Items]
Effective interest rate cap on derivative instrument									2.60%
Secured Loan | Interest Rate Swap
Debt Instrument [Line Items]
Derivative, notional amount			$ 85,500,000
Derivative, Fixed Interest Rate			5.10%
Stoney Creek Loan
Debt Instrument [Line Items]
Debt Instrument Maturity Date	[1],[7]				Oct. 1, 2021
Debt Instrument, Interest Rate	[1],[7]				4.65%
Debt Instrument Carrying Amount	[1],[7]				$ 5,712,058		5,591,950
Stoney Creek Loan | Strategic Storage Growth Trust, Inc
Debt Instrument [Line Items]
Debt instrument, variable interest rate					1.95%
Debt Instrument Carrying Amount				$ 5,000,000
Stoney Creek Loan | Strategic Storage Growth Trust, Inc | Minimum
Debt Instrument [Line Items]
Debt Instrument Fixed Rate					4.65%
Torbarrie Loan
Debt Instrument [Line Items]
Debt Instrument Maturity Date	[1],[8]				Sep. 1, 2021
Debt Instrument, Interest Rate	[1],[8]				4.65%
Debt Instrument Carrying Amount	[1],[8]				$ 6,423,863		5,936,996
Torbarrie Loan | Strategic Storage Growth Trust, Inc
Debt Instrument [Line Items]
Debt instrument, variable interest rate					1.95%
Debt Instrument Carrying Amount						$ 0
Torbarrie Loan | Strategic Storage Growth Trust, Inc | Minimum
Debt Instrument [Line Items]
Debt Instrument Fixed Rate					4.65%
Fixed Rate Secured Debt | Interest Rate Swap | Termination
Debt Instrument [Line Items]
Derivative, notional amount			$ 75,700,000
Settlement payment of interest rate swaps			$ 600,000
Fixed Rate Secured Debt | KeyBank CMBS Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					29
Debt Instrument Maturity Date	[9]				Aug. 1, 2026
Debt Instrument Fixed Rate	[9]				3.89%
Debt Instrument Carrying Amount	[9]				$ 95,000,000		95,000,000
Fixed Rate Secured Debt | KeyBank Property Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					5
Fixed Rate Secured Debt | Midland North Carolina CMBS Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					11
Debt Instrument Maturity Date	[10]				Aug. 1, 2024
Debt Instrument Fixed Rate	[10]				5.31%
Debt Instrument Carrying Amount	[10]				$ 46,427,994		47,048,287
Fixed Rate Secured Debt | CMBS Loan
Debt Instrument [Line Items]
Number of properties encumbered | Property					10
Debt Instrument Maturity Date	[11]				Feb. 1, 2029
Debt Instrument Fixed Rate	[11]				5.00%
Debt Instrument Carrying Amount	[11]				$ 104,000,000		$ 104,000,000
[1]	On March 17, 2021, these loans were paid off in full in conjunction with the SST IV Merger. See Note 16 – Subsequent Events for additional information.
[2]	This variable rate loan encumbers 29 properties (Morrisville, Cary, Raleigh, Vallejo, Xenia, Sidney, Troy, Greenville, Washington Court House, Richmond, Connersville, Port St Lucie, Sacramento, Concord, Oakland, Wellington, Doral, Naples, Baltimore, Aurora, Jones Blvd - Las Vegas, Russell Rd - Las Vegas, Riverside, Stockton, Azusa, Romeoville, Elgin, San Antonio, Kingwood). The separate assets of these encumbered properties are not available to pay our other debts.
[3]	This loan incurs interest at LIBOR plus 3%, which resulted in an interest rate of 3.13% as of December 31, 2020. However, in June 2019, we purchased an interest rate swap whereby LIBOR is fixed at 1.79% though February 15, 2022, which results in an effective fixed interest rate of 4.79% on this loan
[4]	This variable rate loan encumbers 29 properties (Morrisville, Cary, Raleigh, Vallejo, Xenia, Sidney, Troy, Greenville, Washington Court House, Richmond, Connersville, Port St Lucie, Sacramento, Concord, Oakland, Wellington, Doral, Naples, Baltimore, Aurora, Jones Blvd - Las Vegas, Russell Rd - Las Vegas, Riverside, Stockton, Azusa, Romeoville, Elgin, San Antonio, Kingwood). The separate assets of these encumbered properties are not available to pay our other debts
[5]	On January 29, 2019, we entered into a $161.2 million notional interest rate swap whereby LIBOR was fixed at approximately 2.6% until August 1, 2020. On October 29, 2019, in connection with the pay off of the Senior Term Loan, we terminated approximately $75.7 million of this interest rate swap which required a settlement payment of approximately $0.6 million. The remaining $85.5 million of the interest rate swap effectively fixed the interest rate on the Secured Loan at 5.1% until August 1, 2020. To continue hedging our interest rate risk related to this loan, we purchased an interest rate cap on August 3, 2020 with a notional amount of $80 million that effectively caps LIBOR at 0.5% through August 2, 2021.
[6]	This variable rate loan encumbers 16 properties (Colorado Springs, Aurora, Phoenix, 3173 Sweeten Creek Rd - Asheville, Elk Grove, Garden Grove, Deaverview Rd - Asheville, Highland Center Blvd - Asheville, Sarasota, Mount Pleasant, Pembroke Pines, Riverview, Eastlake, McKinney, Hualapai Way - Las Vegas, Gilbert). The separate assets of these encumbered properties are not available to pay our other debts.
[7]	This variable rate loan bears interest at a rate of 1.95% plus Royal Bank of Canada Prime Rate, which was approximately 2.45% as of December 31, 2020, and in no event shall the total interest rate fall below 4.65% per annum. The Stoney Creek loan was assumed in the SSGT Mergers and had a balance of approximately $5 million USD as of the SSGT Mergers date. The Stoney Creek loan is secured by a first lien deed of trust on the Stoney Creek property and all improvements thereto, is cross-collateralized with the Torbarrie property, and is guaranteed by the Company. The amounts shown above are in USD based on the foreign exchange rate in effect as of December 31, 2020.
[8]	This variable rate loan bears interest at a rate of 1.95% plus Royal Bank of Canada Prime Rate, which was approximately 2.45% as of December 31, 2020, and in no event shall the total interest rate fall below 4.65% per annum. The Torbarrie loan was assumed in the SSGT Mergers and had no outstanding balance as of the date of the SSGT Mergers. The Torbarrie loan is secured by a first lien deed of trust on the Torbarrie property and all improvements thereto, is cross-collateralized with the Stoney Creek property, and is guaranteed by the Company.
[9]	This fixed rate loan encumbers 29 properties (Whittier, La Verne, Santa Ana, Upland, La Habra, Monterey Park, Huntington Beach, Chico, Lancaster I, Riverside, Fairfield, Lompoc, Santa Rosa, Federal Heights, Aurora, Littleton, Bloomingdale, Crestwood, Forestville, Warren I, Sterling Heights, Troy, Warren II, Beverly, Everett, Foley, Tampa, Boynton Beach, and Lancaster II) with monthly interest only payments until September 2021, at which time both interest and principal payments will be due monthly. The separate assets of these encumbered properties are not available to pay our other debts
[10]	This fixed rate loan encumbers 11 self storage properties (Asheville I, Arden, Asheville II, Hendersonville I, Asheville III, Asheville IV, Asheville V, Asheville VI, Asheville VII, Asheville VIII, and Hendersonville II) with monthly interest only payments until September 2019, at which time both interest and principal payments became due monthly.
[11]	This fixed rate loan encumbers 10 properties (Myrtle Beach I, Myrtle Beach II, Port St. Lucie, Plantation, Sonoma, Las Vegas I, Las Vegas II, Las Vegas III, Ft Pierce, Nantucket Island). The separate assets of these encumbered properties are not available to pay our other debts.

Debt - Additional Information (

Debt - Additional Information (Detail)

Aug. 03, 2020USD ($)

Jun. 07, 2019USD ($)

Jan. 24, 2019USD ($)PropertyExtension

Oct. 11, 2018CAD ($)PropertyExtensionSpecialPurposeEntity

Dec. 31, 2020USD ($)Property

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2020CAD ($)Property

May 08, 2020USD ($)

Oct. 29, 2019USD ($)

Jul. 08, 2019CAD ($)

Jan. 29, 2019USD ($)

Jan. 25, 2019CAD ($)

Oct. 01, 2018USD ($)

Debt Instrument [Line Items]

Weighted average interest rate on debt

3.72%

3.72%

Loss on extinguishment of debt

$ 0

$ (2,647,633)

$ 0

Debt Instrument Carrying Amount

$ 721,512,177

Line of credit facility, number of extension options | Extension

2

Line of credit facility, term of extension options

1 year

Derivative, notional amount

$ 95,000,000

$ 161,200,000

$ 90,000,000

Debt instrument face amount

$ 500,178,000

Minimum | Secured Loan Amendment

Debt Instrument [Line Items]

Amendment to secured loan with secured lenders

$ 10,000,000

Maximum | Secured Loan Amendment

Debt Instrument [Line Items]

Amendment to secured loan with secured lenders

$ 15,000,000

Fixed Rate Secured Debt

Debt Instrument [Line Items]

Debt instrument, description of variable rate basis

LIBOR plus 2.5%

Debt instrument, basis spread on variable rate

2.50%

Derivative, notional amount

$ 89,200,000

Debt instrument, interest rate

2.60%

Debt instrument face amount

$ 89,178,000

Fixed Rate Secured Debt

Debt Instrument [Line Items]

Number of wholly owned properties | Property

16,000,000

Debt Instrument Maturity Date

Jan. 24, 2022

Line of credit facility, number of extension options | Extension

1,000,000

Line of credit facility, term of extension options

1 year

Debt instrument face amount

$ 89,200,000

LIBOR | Minimum | Secured Loan Amendment

Debt Instrument [Line Items]

Debt Instrument, Interest Rate

0.50%

Interest Rate Cap

Debt Instrument [Line Items]

Debt Instrument Maturity Date

Aug. 2, 2021

Derivative, notional amount

$ 80,000,000

Interest Rate Cap | LIBOR

Debt Instrument [Line Items]

Debt instrument, interest rate

0.50%

Interest Rate Swap | Fixed Rate Secured Debt | Termination

Debt Instrument [Line Items]

Derivative, notional amount

$ 85,500,000

KeyBank and Citi Real Estate Funding

Debt Instrument [Line Items]

Debt Instrument Carrying Amount

235,000,000

CMBS SASB Mortgage Loan

Debt Instrument [Line Items]

Debt Instrument Carrying Amount

$ 180,000,000

Number of wholly owned properties | Property

29

Debt Instrument Maturity Date

Feb. 9, 2022

Derivative, notional amount

$ 180,000,000

Derivative, inception date

Jan. 24, 2019

CMBS SASB Mortgage Loan | Interest Rate Cap

Debt Instrument [Line Items]

Derivative, notional amount

$ 180,000,000

CMBS SASB Mezzanine Loan

Debt Instrument [Line Items]

Debt Instrument Carrying Amount

$ 55,000,000

Number of special purpose entities | Property

29

Debt Instrument Maturity Date

Feb. 9, 2022

Derivative, notional amount

$ 55,000,000

Derivative, inception date

Jan. 24, 2019

CMBS SASB Mezzanine Loan | Interest Rate Cap

Debt Instrument [Line Items]

Derivative, notional amount

$ 55,000,000

CMBS SASB Loan

Debt Instrument [Line Items]

Debt instrument, description

(a) the borrower with respect to the CMBS SASB Mortgage Loan has purchased an interest rate cap with a notional amount of $180 million, with an effective date of January 24, 2019, whereby LIBOR is capped at 3% through February 15, 2022 and (b) the borrower with respect to the CMBS SASB Mezzanine Loan has purchased an interest rate cap with a notional amount of $55 million, with an effective date of January 24, 2019, whereby LIBOR is capped at 3% through February 15, 2022. On June 7, 2019, to effectively terminate our $180 million and $55 million existing interest rate caps, we sold an offsetting interest rate cap with a notional amount of $235 million, whereby LIBOR is capped at 3% through February 15, 2022.  We simultaneously entered into an interest rate swap with a notional amount of $235 million, whereby LIBOR is fixed at 1.79% through February 15, 2022. None of the CMBS SASB Loan may be prepaid, in whole or in part, without satisfying certain conditions as set forth in the respective CMBS SASB Loan Agreements, such as the payment of a spread maintenance premium if the prepayment is made within the first two years. Thereafter the CMBS SASB Loan may be prepaid in whole or in part at par without penalty

Debt instrument face amount

$ 235,000,000

CMBS SASB Loan | LIBOR

Debt Instrument [Line Items]

Debt instrument, description of variable rate basis

LIBOR plus 3%

Debt instrument, basis spread on variable rate

3.00%

CMBS SASB Loan | Interest Rate Cap

Debt Instrument [Line Items]

Debt Instrument Maturity Date

Feb. 15, 2022

Derivative, notional amount

$ 235,000,000

Debt instrument, interest rate

3.00%

CMBS SASB Loan | Interest Rate Swap

Debt Instrument [Line Items]

Debt Instrument Maturity Date

Feb. 15, 2022

Derivative, notional amount

$ 235,000,000

Debt instrument, interest rate

1.79%

KeyBank CMBS Loan

Debt Instrument [Line Items]

Debt Instrument Carrying Amount

$ 104,000,000

Number of wholly owned properties | Property

10

Debt Instrument Maturity Date

Feb. 1, 2029

Debt instrument, interest rate

5.00%

Minimum Number of Years to Defease the Loan

2 years

Secured Loan

Debt Instrument [Line Items]

Debt Instrument Carrying Amount

[1],[2],[3]

$ 85,512,000

85,512,000

Debt Instrument Maturity Date

[1],[2],[3]

Jan. 24, 2022

Debt Instrument, Interest Rate

[1],[2],[3]

3.00%

3.00%

Number of properties encumbered | Property

16

16

Secured Loan | Fixed Rate Secured Debt

Debt Instrument [Line Items]

Outstanding balance on credit facility

$ 85,500,000

$ 85,500,000

Secured Loan | Interest Rate Cap | LIBOR

Debt Instrument [Line Items]

Debt instrument, interest rate

2.60%

Secured Loan | Interest Rate Swap

Debt Instrument [Line Items]

Derivative, notional amount

$ 85,500,000

Canadian CitiBank | Canadian Debt Refinancing

Debt Instrument [Line Items]

Number of special purpose entities | SpecialPurposeEntity

10

Line of credit facility, number of extension options | Extension

3

Line of credit facility, term of extension options

1 year

1 year

Derivative, notional amount

$ 112,000,000

$ 111,300,000

Debt instrument, interest rate

3.00%

Debt instrument, interest rate

0.25%

Number of properties encumbered | Property

10

Maximum borrowings under credit facility

$ 112,000,000

Proceeds from line of credit

$ 99,300,000

Line of credit facility, description

The CitiBank Loan Agreement is a term loan, the original maturity date was October 9, 2020. The loan may, in certain circumstances, be extended at our option for three consecutive terms of one year each. We exercised the first one year extension option, extending the maturity date to October 9, 2021.  Monthly payments due under the CitiBank Loan Agreement are interest-only, with the full principal amount becoming due and payable on the maturity date.

Line of credit facility, maturity date

Oct. 9, 2020

Line of credit facility extended expiration date

Oct. 9, 2021

Line of credit, interest rate description

The amounts outstanding under the CitiBank Loan Agreement bear interest at a rate equal to the sum of the “CDOR” (as defined in the CitiBank Loan Agreement) and 2.25%.

Canadian CitiBank | Maximum | Canadian Debt Refinancing

Debt Instrument [Line Items]

Line of credit facility, Additional borrowing capacity

$ 700,000

Strategic Storage Growth Trust, Inc

Debt Instrument [Line Items]

Loss on extinguishment of debt

$ 1,500,000

Debt Instrument Carrying Amount

$ 19,000,000

Debt instrument face amount

$ 500,000,000

[1]

On January 29, 2019, we entered into a $161.2 million notional interest rate swap whereby LIBOR was fixed at approximately 2.6% until August 1, 2020. On October 29, 2019, in connection with the pay off of the Senior Term Loan, we terminated approximately $75.7 million of this interest rate swap which required a settlement payment of approximately $0.6 million. The remaining $85.5 million of the interest rate swap effectively fixed the interest rate on the Secured Loan at 5.1% until August 1, 2020. To continue hedging our interest rate risk related to this loan, we purchased an interest rate cap on August 3, 2020 with a notional amount of $80 million that effectively caps LIBOR at 0.5% through August 2, 2021.

[2]

On March 17, 2021, these loans were paid off in full in conjunction with the SST IV Merger. See Note 16 – Subsequent Events for additional information.

[3]

This variable rate loan encumbers 16 properties (Colorado Springs, Aurora, Phoenix, 3173 Sweeten Creek Rd - Asheville, Elk Grove, Garden Grove, Deaverview Rd - Asheville, Highland Center Blvd - Asheville, Sarasota, Mount Pleasant, Pembroke Pines, Riverview, Eastlake, McKinney, Hualapai Way - Las Vegas, Gilbert). The separate assets of these encumbered properties are not available to pay our other debts.

Debt - Summary of Merger Financ

Debt - Summary of Merger Financings (Detail)	Jan. 24, 2019USD ($)
Debt Instrument [Line Items]
Principal Borrowing as of Merger Date	$ 500,178,000
CMBS SASB Loan
Debt Instrument [Line Items]
Principal Borrowing as of Merger Date	235,000,000
CMBS Loan
Debt Instrument [Line Items]
Principal Borrowing as of Merger Date	104,000,000
Fixed Rate Secured Debt
Debt Instrument [Line Items]
Principal Borrowing as of Merger Date	89,178,000
Senior Term Loan
Debt Instrument [Line Items]
Principal Borrowing as of Merger Date	$ 72,000,000

Debt - Summary of Payment Relat

Debt - Summary of Payment Related to Merger Consideration and Repayment of Debt (Detail)	Jan. 24, 2019USD ($)
Debt Instrument [Line Items]
Principal Repaid	$ 141,088,724
Amended KeyBank Credit Facility
Debt Instrument [Line Items]
Principal Repaid	98,782,500
Raleigh Myrtle Beach Promissory Note
Debt Instrument [Line Items]
Principal Repaid	11,862,471
Oakland and Concord Loan
Debt Instrument [Line Items]
Principal Repaid	19,443,753
$11M KeyBank Subordinate Loan
Debt Instrument [Line Items]
Principal Repaid	$ 11,000,000

Debt - Summary of Payment Rel_2

Debt - Summary of Payment Related to Merger Consideration and Repayment of Debt (Paranthetical) (Detail) $ in Millions	Jan. 24, 2019USD ($)
KeyBank Subordinate Loan
Debt Instrument [Line Items]
Subordinate Loan	$ 11

Future Principal Payment Requir

Future Principal Payment Requirements on Outstanding Debt (Detail) - USD ($)	Mar. 17, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt, Fiscal Year Maturity
2021		$ 100,767,277
2022		323,426,414
2023		3,384,140
2024		47,043,508
2025		2,869,187
2026 and thereafter		244,021,651
Total payments		721,512,177
Premium on secured debt, net		461,823
Debt issuance costs, net		(4,021,767)
Total		$ 717,952,233	$ 712,733,002
Subsequent Event | Strategic Storage Trust IV, Inc.
Debt, Fiscal Year Maturity
2021	$ 1,100,433
2022	2,914,414
2023	44,052,298
2024	248,046,008
2025	2,869,187
2026 and thereafter	534,406,353
Total payments	$ 833,388,693

Preferred Equity - Additional I

Preferred Equity - Additional Information (Details)	Oct. 29, 2019USD ($)Day$ / shares	Dec. 31, 2020USD ($)shares	Oct. 26, 2020USD ($)	Dec. 31, 2019USD ($)shares
Class Of Stock [Line Items]
Maximum purchase commitment amount	$ 200,000,000
Initial closing amount	$ 150,000,000
Second and final closing amount			$ 50,000,000
Preferred stock, dividend rate, percentage	6.25%
Fifth To Tenth Anniversary
Class Of Stock [Line Items]
Dividend rate percentage of increase on preferred stock	0.75%
Tenth Anniversary | Maximum
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	9.00%
After Tenth Anniversary
Class Of Stock [Line Items]
Dividend rate percentage of increase on preferred stock	0.75%
Series A Convertible Preferred Stock Purchase Agreement
Class Of Stock [Line Items]
Maximum purchase commitment amount	$ 200,000,000
Initial closing amount	150,000,000	$ 150,000,000		$ 150,000,000
Second and final closing amount			$ 50,000,000
Issuance costs	$ 3,600,000
Preferred stock, dividend rate, percentage	6.25%
Preferred stock payment description		Upon any voluntary or involuntary liquidation, dissolution or winding up of the Company, the holders of Series A Convertible Preferred Stock will be entitled to receive a payment equal to the greater of (i) aggregate purchase price of all outstanding Preferred Shares, plus any accrued and unpaid dividends (the “Liquidation Amount”) and (ii) the amount that that would have been payable had the Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to such liquidation.
Preferred stock redemption description		Subject to certain additional redemption rights, as described herein, we have the right to redeem the Series A Convertible Preferred Stock for cash at any time following the fifth anniversary of the Initial Closing. The amount of such redemption will be equal to the Liquidation Amount. Upon the listing of our common stock on a national securities exchange (the “Listing”), we have the right to redeem any or all outstanding Series A Convertible Preferred Stock at an amount equal to the greater of (i) the amount that would have been payable had such Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to the Listing, and then all of such Preferred Shares were sold in the Listing, or (ii) the Liquidation Amount, plus a premium amount (the “Premium Amount”) of 10%, 8%, 6%, 4%, or 2% if redeemed prior to the first, second, third, fourth, or fifth anniversary dates of issuance, respectively, or 0% if redeemed thereafter, as set forth in the Articles Supplementary. Upon a change of control event, we have the right to redeem any or all outstanding Series A Convertible Preferred Stock at an amount equal to the greater of (i) the amount that would have been payable had the Preferred Shares been converted into common stock pursuant to the terms of the Purchase Agreement immediately prior to such change of control or (ii) the Liquidation Amount, plus the Premium Amount, as set forth in the Articles Supplementary. In addition, subject to certain cure provisions, if we fail to maintain our status as a real estate investment trust, the holders of Series A Convertible Preferred Stock have the right to require us to repurchase the Series A Convertible Preferred Stock at an amount equal to the Liquidation Amount with no Premium Amount.
Preferred stock redemption premium	$ 0
Preferred stock, conversion basis		At any time after the earlier to occur of (i) the second anniversary of the Initial Closing or (ii) 180 days after a Listing, the holders of Series A Convertible Preferred Stock have the right to convert any or all of the Series A Convertible Preferred Stock held by such holders into common stock at a rate per share equal to the quotient obtained by dividing the Liquidation Amount by the conversion price. The conversion price is $10.66, as may be adjusted in connection with stock splits, stock dividends and other similar transactions.
Conversion price per share | $ / shares	$ 10.66
Number of days after lifting of preferred stock to common stock | Day	180
Preferred stock, voting rights condition		This foregoing limited voting right shall cease when all past dividend periods have been paid in full. In addition, the affirmative vote of the holders of a majority of the outstanding shares of Series A Convertible Preferred Stock is required in certain customary circumstances, as well as other circumstances, such as (i) our real estate portfolio exceeding a leverage ratio of 60% loan-to-value, (ii) entering into certain transactions with our Executive Chairman as of the Commitment Date, or his affiliates, (iii) effecting a merger (or similar) transaction with an entity whose assets are not at least 80% self storage related and (iv) entering into any line of business other than self storage and ancillary businesses, unless such ancillary business represents revenues of less than 10% of our revenues for our last fiscal year.
Required leverage ratio of our real estate portfolio	60.00%
Required percentage of self storage related assets of merger entity	80.00%
Required ancillary business revenue to total revenue	10.00%
Preferred stock, investors rights agreement		In connection with the issuance of the Series A Convertible Preferred Stock, we and the Investor also entered into an investors’ rights agreement (the “Investors’ Rights Agreement”) which provides the Investor with certain customary protections, including demand registration rights and “piggyback” registration rights with respect to our common stock issued to the Investor upon conversion of the Preferred Shares.
Preferred shares outstanding | shares		200,000		150,000
Aggregate liquidation preference		$ 202,900,000		$ 151,700,000
Amount of accumulated and unpaid distributions		$ 2,900,000		1,600,000
Amount of accumulated and unpaid fees on undrawn commitment				$ 100,000
Series A Convertible Preferred Stock Purchase Agreement | Fifth To Tenth Anniversary
Class Of Stock [Line Items]
Dividend rate percentage of increase on preferred stock	0.75%
Series A Convertible Preferred Stock Purchase Agreement | Tenth Anniversary | Maximum
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	9.00%
Series A Convertible Preferred Stock Purchase Agreement | After Tenth Anniversary
Class Of Stock [Line Items]
Dividend rate percentage of increase on preferred stock	0.75%
Series A Convertible Preferred Stock Purchase Agreement | First Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	10.00%
Series A Convertible Preferred Stock Purchase Agreement | Second Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	8.00%
Series A Convertible Preferred Stock Purchase Agreement | Third Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	6.00%
Series A Convertible Preferred Stock Purchase Agreement | Fourth Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	4.00%
Series A Convertible Preferred Stock Purchase Agreement | Fifth Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	2.00%
Series A Convertible Preferred Stock Purchase Agreement | After Fifth Anniversary
Class Of Stock [Line Items]
Premium amount over liquidation amount on redemption, percent	0.00%

Derivative Instruments - Summar

Derivative Instruments - Summary of Derivative Financial Instruments (Detail)

Feb. 10, 2020CAD ($)

Dec. 31, 2020USD ($)$ / Unit

Dec. 31, 2019USD ($)$ / Unit

Dec. 31, 2020CAD ($)$ / Unit

Aug. 03, 2020USD ($)

Dec. 31, 2019CAD ($)$ / Unit

Dec. 09, 2019CAD ($)

Jul. 08, 2019CAD ($)

Jan. 29, 2019USD ($)

Jan. 25, 2019CAD ($)

Derivative [Line Items]

Derivative, notional amount

$ 95,000,000

$ 161,200,000

$ 90,000,000

Interest Rate Swap | LIBOR Swap Effective June 15, 2019

Derivative [Line Items]

Derivative, notional amount

$ 235,000,000

$ 235,000,000

Interest Rate Swaps, Strike

1.79%

1.79%

1.79%

1.79%

Interest Rate Swaps, Effective Date or Date Assumed

Jun. 15, 2019

Jun. 15, 2019

Interest Rate Swaps, Maturity Date

Feb. 15, 2022

Feb. 15, 2022

Interest Rate Swap | LIBOR Swap Effective January 24, 2019

Derivative [Line Items]

Derivative, notional amount

$ 85,512,000

Interest Rate Swaps, Strike

2.61%

2.61%

Interest Rate Swaps, Effective Date or Date Assumed

Jan. 24, 2019

Interest Rate Swaps, Maturity Date

[1]

Aug. 1, 2020

Interest Rate Cap

Derivative [Line Items]

Derivative, notional amount

$ 80,000,000

Interest Rate Cap | LIBOR Cap Effective August 3, 2020

Derivative [Line Items]

Derivative, notional amount

$ 80,000,000

Interest Rate Swaps, Strike

0.50%

0.50%

Interest Rate Swaps, Effective Date or Date Assumed

Aug. 3, 2020

Interest Rate Swaps, Maturity Date

Aug. 2, 2021

Interest Rate Cap | CDOR Cap Effective October 11, 2018

Derivative [Line Items]

Derivative, notional amount

$ 99,300,000

[2]

$ 99,300,000

[3]

Interest Rate Swaps, Strike

3.00%

3.00%

3.00%

3.00%

Interest Rate Swaps, Effective Date or Date Assumed

Oct. 11, 2018

Oct. 11, 2018

Interest Rate Swaps, Maturity Date

Oct. 15, 2021

Oct. 15, 2021

Interest Rate Cap | CDOR Cap Effective March 28, 2019

Derivative [Line Items]

Derivative, notional amount

$ 1,000,000

[2]

$ 1,000,000

[3]

Interest Rate Swaps, Strike

3.00%

3.00%

3.00%

3.00%

Interest Rate Swaps, Effective Date or Date Assumed

Mar. 28, 2019

Mar. 28, 2019

Interest Rate Swaps, Maturity Date

Oct. 15, 2021

Oct. 15, 2021

Interest Rate Cap | CDOR Cap Effective May 28, 2019

Derivative [Line Items]

Derivative, notional amount

$ 11,700,000

[2]

$ 11,700,000

[3]

Interest Rate Swaps, Strike

3.00%

3.00%

3.00%

3.00%

Interest Rate Swaps, Effective Date or Date Assumed

May 28, 2019

May 28, 2019

Interest Rate Swaps, Maturity Date

Oct. 15, 2021

Oct. 15, 2021

Foreign Currency Forward

Derivative [Line Items]

Derivative, notional amount

$ 95,000,000

$ 95,000,000

$ 95,000,000

Foreign Currency Forward, Notional Amount

$ 95,000,000

[2]

$ 95,000,000

[3]

Foreign Currency Forward, Strike | $ / Unit

1.334

1.323

1.334

1.323

Foreign Currency Forward, Effective Date or Date Assumed

Feb. 10, 2020

Dec. 9, 2019

Foreign Currency Forward, Maturity Date

Feb. 10, 2021

Feb. 10, 2021

[4]

Feb. 10, 2020

[5]

[1]

On August 3, 2020, we entered into a LIBOR interest rate cap for a notional amount of $80 million which caps LIBOR at 0.5% through August 2, 2021.

[2]

Notional amounts shown are denominated in CAD.

[3]

Notional amount shown is denominated in CAD.

[4]

On February 10, 2021, we rolled this currency forward into a new $95 million CAD currency forward with a strike price of 1.334, and a maturity date of April 12, 2021

[5]

We settled this forward on February 10, 2020, receiving a net settlement of approximately $0.5 million and simultaneously entered into another $95 million CAD foreign currency forward with a maturity date of February 10, 2021

Derivative Instruments - Summ_2

Derivative Instruments - Summary of Derivative Financial Instruments (Parenthetical) (Detail)

Feb. 10, 2021CAD ($)$ / Unit

Feb. 10, 2020USD ($)

Jul. 08, 2019USD ($)

Jan. 25, 2019USD ($)

Dec. 31, 2020USD ($)

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2020CAD ($)$ / Unit

Feb. 10, 2020CAD ($)

Dec. 31, 2019CAD ($)$ / Unit

Dec. 09, 2019CAD ($)

Jul. 08, 2019CAD ($)

Jan. 29, 2019USD ($)

Jan. 25, 2019CAD ($)

Derivative [Line Items]

Foreign currency forward contract gains (loss)

$ 500,000

$ 600,000

$ 2,100,000

$ (596,969)

$ (3,226,682)

$ 5,251,438

Derivative, notional amount

$ 95,000,000

$ 161,200,000

$ 90,000,000

Derivative, notional amount

$ 95,000,000

$ 161,200,000

90,000,000

Foreign Currency Forward

Derivative [Line Items]

Foreign Currency Forward, Notional Amount

$ 95,000,000

[1]

$ 95,000,000

[2]

Foreign Currency Forward, Strike | $ / Unit

1.334

1.323

Foreign Currency Forward, Maturity Date

Feb. 10, 2021

Feb. 10, 2021

[3]

Feb. 10, 2020

[4]

Derivative, notional amount

$ 95,000,000

$ 95,000,000

95,000,000

Derivative, notional amount

$ 95,000,000

$ 95,000,000

$ 95,000,000

Foreign Currency Forward | Subsequent Event

Derivative [Line Items]

Foreign Currency Forward, Notional Amount

$ 95,000,000

Foreign Currency Forward, Strike | $ / Unit

1.334

Foreign Currency Forward, Maturity Date

Apr. 12, 2021

[1]

Notional amounts shown are denominated in CAD.

[2]

Notional amount shown is denominated in CAD.

[3]

On February 10, 2021, we rolled this currency forward into a new $95 million CAD currency forward with a strike price of 1.334, and a maturity date of April 12, 2021

[4]

We settled this forward on February 10, 2020, receiving a net settlement of approximately $0.5 million and simultaneously entered into another $95 million CAD foreign currency forward with a maturity date of February 10, 2021

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail)	Feb. 10, 2020USD ($)	Jul. 08, 2019USD ($)	Jan. 25, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Feb. 10, 2020CAD ($)	Dec. 09, 2019CAD ($)	Jul. 08, 2019CAD ($)	Jan. 29, 2019USD ($)	Jan. 25, 2019CAD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Foreign currency forward contract gains (loss)	$ 500,000	$ 600,000	$ 2,100,000	$ (596,969)	$ (3,226,682)	$ 5,251,438
Derivative, notional amount									$ 95,000,000	$ 161,200,000	$ 90,000,000
Foreign Exchange Option
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, notional amount									$ 95,000,000
Foreign Currency Forward
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, notional amount							$ 95,000,000	$ 95,000,000			$ 95,000,000
Other income (expense)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Gain (loss) on foreign currency hedge contract, ineffective portion				$ 800,000	$ 400,000

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Fair Value of Derivative Financial Instruments and Classification In Consolidated Balance Sheets (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Swap | Accounts payable and accrued liabilities
Derivatives Fair Value [Line Items]
Derivative fair value, liability	$ 4,379,424	$ 1,695,140
Interest Rate Cap | Other assets
Derivatives Fair Value [Line Items]
Derivative fair value, assets		28,847
Foreign Currency Hedges | Accounts payable and accrued liabilities
Derivatives Fair Value [Line Items]
Derivative fair value, liability	$ 3,270,910	$ 1,425,632

Segment Disclosures - Additiona

Segment Disclosures - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020Segment
Segment Reporting [Abstract]
Number of reportable business segments	2

Summary of Reportable Segments

Summary of Reportable Segments (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Total revenues									$ 124,024,363	$ 109,528,549	$ 80,412,257
Operating expenses:
General and administrative									16,471,199	10,461,453	4,848,447
Depreciation									32,294,627	29,605,278	20,379,694
Intangible amortization expense									9,777,116	11,493,394	2,422,997
Other property acquisition expenses									1,366,092	141,489
Contingent earnout adjustment									(2,500,000)	200,000	0
Self administration transaction expenses									0	1,572,238	0
Acquisition expenses – affiliates										84,061
Impairment of goodwill and intangible assets									36,465,732
Impairment of investments in Managed REITs									4,376,879	0	0
Total operating expenses	$ 29,307,135	$ 26,992,137	$ 27,497,027	$ 61,368,274	$ 26,965,933	$ 27,773,486	$ 25,211,611	$ 21,934,203	145,164,573	101,885,233	64,260,814
Gain on sale of real estate									0	3,944,696	0
Operating income (loss)	3,586,438	4,370,985	1,972,518	(31,070,151)	7,055,456	1,814,528	768,906	1,949,122	(21,140,210)	11,588,012	16,151,443
Other income (expense):
Interest expense									(32,597,613)	(37,563,247)	(18,002,274)
Interest expense – accretion of fair market value of secured debt									130,682	131,611	413,353
Interest expense – debt issuance costs									(3,586,381)	(3,996,676)	(1,582,049)
Net loss on extinguishment of debt									0	(2,647,633)	0
Gain resulting from acquisition of unconsolidated affiliates									0	8,017,353	0
Other									5,986,719	(624,958)	(701,203)
Net loss	$ (1,943,884)	$ (4,456,497)	$ (7,062,841)	$ (37,743,581)	$ (4,321,670)	$ (9,541,579)	$ (2,283,972)	$ (8,948,317)	(51,206,803)	(25,095,538)	(3,720,730)
Self Storage
Revenues:
Total revenues									110,174,925	103,201,260
Operating expenses:
Depreciation									31,773,526	29,305,979
Intangible amortization expense									5,234,312	9,051,083
Other property acquisition expenses									1,366,092	141,489
Acquisition expenses – affiliates										84,061
Total operating expenses									76,679,129	80,911,393
Gain on sale of real estate										3,944,696
Operating income (loss)									33,495,796	26,234,563
Other income (expense):
Interest expense									(32,417,179)	(37,469,725)
Interest expense – accretion of fair market value of secured debt									130,682	131,611
Interest expense – debt issuance costs									(3,577,730)	(3,990,421)
Net loss on extinguishment of debt										(2,635,278)
Gain resulting from acquisition of unconsolidated affiliates										8,017,353
Other									1,708,026	(1,159,570)
Net loss									(660,405)	(10,871,467)
Managed REIT Platform
Revenues:
Total revenues									13,849,438	6,327,289
Operating expenses:
Intangible amortization expense									4,542,804	2,442,311
Contingent earnout adjustment									(2,500,000)
Impairment of goodwill and intangible assets									36,465,732
Impairment of investments in Managed REITs									4,376,879
Total operating expenses									51,493,144	8,440,850
Operating income (loss)									(37,643,706)	(2,113,561)
Other income (expense):
Other									4,557,129	534,612
Net loss									(33,086,577)	(1,578,949)
Corporate and Other
Operating expenses:
General and administrative									16,471,199	10,461,453
Depreciation									521,101	299,299
Contingent earnout adjustment										200,000
Self administration transaction expenses										1,572,238
Total operating expenses									16,992,300	12,532,990
Operating income (loss)									(16,992,300)	(12,532,990)
Other income (expense):
Interest expense									(180,434)	(93,522)
Interest expense – debt issuance costs									(8,651)	(6,255)
Net loss on extinguishment of debt										(12,355)
Other									(278,436)
Net loss									(17,459,821)	(12,645,122)
Self Storage Rental Revenue
Revenues:
Total revenues									104,888,883	99,494,560	78,473,091
Self Storage Rental Revenue | Self Storage
Revenues:
Total revenues									104,888,883	99,494,560
Ancillary Operating Revenue
Revenues:
Total revenues									5,286,042	3,706,700	1,939,166
Ancillary Operating Revenue | Self Storage
Revenues:
Total revenues									5,286,042	3,706,700
Managed REIT Platform Revenue
Revenues:
Total revenues									8,048,630	3,068,306	0
Managed REIT Platform Revenue | Managed REIT Platform
Revenues:
Total revenues									8,048,630	3,068,306
Reimbursable Costs from Managed REITs
Revenues:
Total revenues									5,800,808	3,258,983	0
Operating expenses:
Operating expenses									5,800,808	3,258,983	0
Reimbursable Costs from Managed REITs | Managed REIT Platform
Revenues:
Total revenues									5,800,808	3,258,983
Operating expenses:
Operating expenses									5,800,808	3,258,983
Property Operating Expenses
Operating expenses:
Operating expenses									38,305,199	35,723,111	25,228,704
Property Operating Expenses | Self Storage
Operating expenses:
Operating expenses									38,305,199	35,723,111
Property Operating Expenses – Affiliates
Operating expenses:
Operating expenses									0	6,605,670	10,254,634
Property Operating Expenses – Affiliates | Self Storage
Operating expenses:
Operating expenses										6,605,670
Managed REIT Platform Expenses
Operating expenses:
Operating expenses									2,806,921	2,739,556	$ 0
Managed REIT Platform Expenses | Managed REIT Platform
Operating expenses:
Operating expenses									$ 2,806,921	$ 2,739,556

Summary of Total Assets by Segm

Summary of Total Assets by Segment (Detail) - USD ($)		Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Asset Reconciling Item [Line Items]
Total assets		$ 1,282,221,057	$ 1,311,433,731
Self Storage
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	[1]	1,172,178,148	1,175,887,634
Managed REIT Platform
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	[1]	44,482,625	73,939,002
Corporate and Other
Segment Reporting Asset Reconciling Item [Line Items]
Total assets		$ 65,560,284	$ 61,607,095
[1]	Included in the assets of the Self Storage and the Managed REIT Platform segments as of December 31, 2020, are approximately $45.3 million, and $8.4 million of goodwill, respectively.  As of December 31, 2019, such amounts were approximately $45.3 million and $33.1 million of goodwill, respectively.

Summary of Total Assets by Se_2

Summary of Total Assets by Segment (Parenthetical) (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Jun. 28, 2019
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	$ 53,643,331	$ 78,372,980	$ 78,372,980
Self Storage
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	45,300,000	45,300,000
Managed REIT Platform
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	$ 8,400,000	$ 33,100,000

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail)	Jan. 21, 2021shares	Nov. 12, 2020USD ($)	Sep. 21, 2020USD ($)$ / sharesshares	Dec. 31, 2020USD ($)Employee	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Nov. 04, 2020USD ($)	Oct. 29, 2020USD ($)	Oct. 29, 2019USD ($)
Related Party Transaction [Line Items]
Number of self storage professionals acquired | Employee				350
Maximum dealer manager commission fee percentage of proceeds from Primary Offering				3.00%
Self storage rental revenue				$ 124,024,363	$ 109,528,549	$ 80,412,257
Maximum purchase commitment amount									$ 200,000,000
Redemption of preferred units					200,000
Operating expenses reimbursement percentage of average investment in assets				2.00%
Operating expenses reimbursement percentage of net income				25.00%
Due to affiliates				$ 667,429	1,624,474
Managed REIT Platform Revenue
Related Party Transaction [Line Items]
Receivables due from related parties				$ 600,000	300,000
Tenant Programs | TRS subsidiary
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture				50.00%
Percentage of net economics generated from tenant insurance received under terms of joint venture agreement				50.00%
Auction Company
Related Party Transaction [Line Items]
Percentage of limited partnership interests				50.00%
Self storage rental revenue				$ 44,000	$ 45,000	$ 43,000
Type of Revenue [Extensible List]				us-gaap:ShareholderServiceMember	us-gaap:ShareholderServiceMember
Class A Common stock
Related Party Transaction [Line Items]
Sale commission fees percentage of proceed from Primary Offering				7.00%
Class T Common stock
Related Party Transaction [Line Items]
Sale commission fees percentage of proceed from Primary Offering				2.00%
Advisory Agreement
Related Party Transaction [Line Items]
Rate of acquisition fees of purchase price of contract				1.75%
Monthly asset management fee				0.05208%
Monthly asset management fee one twelfth of less than one percentage of average invested assets				one-twelfth of 0.625%
SmartStop Asset Management
Related Party Transaction [Line Items]
Percentage of non-voting equity owned				15.00%
SmartStop Asset Management | Strategic Transfer Agent Services, LLC
Related Party Transaction [Line Items]
Percentage of membership interest				100.00%
Transfer Agent Agreement
Related Party Transaction [Line Items]
Transfer agent agreement term				3 years
Transfer agent renewal agreement term				1 year
Transfer agent agreement termination description				The initial term of the transfer agent agreement is three years, which term will be automatically renewed for one year successive terms, but either party may terminate the transfer agent agreement upon 90 days’ prior written notice. In the event that we terminate the transfer agent agreement, other than for cause, we will pay our transfer agent all amounts that would have otherwise accrued during the remaining term of the transfer agent agreement; provided, however, that when calculating the remaining months in the term for such purposes, such term is deemed to be a 12 month period starting from the date of the most recent annual anniversary date.
Property Management Agreement
Related Party Transaction [Line Items]
Percentage of fee of former external property managers				6.00%
Construction management fee				5.00%
Cost of construction or capital improvement work				$ 10,000
One time fee for former external property managers				3,750
One time fee for former external property managers				3,750
Property Management Agreement | Minimum
Related Party Transaction [Line Items]
Our former external property management fee				$ 3,000
Former External Property Manager?s Affiliate | Tenant Programs
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture				50.00%
Percentage of net economics generated from tenant insurance received under terms of joint venture agreement				50.00%
SSGT II Unit Purchase Agreement
Related Party Transaction [Line Items]
Maximum purchase units of limited partnership interest | shares			1,600,000
Maximum purchase commitment amount			$ 40,000,000
Percentage of investment fee due upon closing each tranche			1.00%
Description of preferred investor distributions				The Preferred Investor will receive distributions, payable monthly in arrears, at a rate of 7.25% per annum from the date of investment until 180 days after the date of investment, 8.25% per annum from 181 days after the date of investment until 360 days after the date of investment, and 9.25% per annum thereafter (collectively, the “Pay Rate”). The proceeds of the SSGT II Investment may be used by SSGT II OP to finance self-storage acquisition, development, and improvement activities, and working capital or other general partnership purposes. Each SSGT II Preferred Unit has a liquidation preference of $25.00, plus all accumulated and unpaid distributions. The foregoing distributions shall be payable monthly, and calculated on an actual/360 day basis, and any unpaid distributions shall accrue at the applicable Pay Rate.
Preferred stock, liquidation preference per unit | $ / shares			$ 25
Additional preferred investments in operating partnership			$ 6,500,000	$ 7,500,000			$ 13,000,000	$ 13,000,000
Investment of preferred investor		$ 13,500,000
Redemption of preferred units		$ 19,000,000
SSGT II Unit Purchase Agreement | Subsequent Event
Related Party Transaction [Line Items]
Partnership units exchanged | shares	13,500,000
SSGT II Unit Purchase Agreement | Other
Related Party Transaction [Line Items]
Income related to preferred units				$ 570,000
SSGT II Unit Purchase Agreement | Investment Until 180 Days
Related Party Transaction [Line Items]
Rate of distributions payable monthly in arrears			7.25%
SSGT II Unit Purchase Agreement | Investment After 181 Days Until 360 Days
Related Party Transaction [Line Items]
Rate of distributions payable monthly in arrears			8.25%
SSGT II Unit Purchase Agreement | Investment Thereafter
Related Party Transaction [Line Items]
Rate of distributions payable monthly in arrears			9.25%
SST IV Advisor
Related Party Transaction [Line Items]
Monthly asset management fee				0.0833%
Monthly asset management fee one twelfth of less than one percentage of average invested assets				one-twelfth of 1%
Maximum period for reimbursement of offering cost				60 days
Maximum offering cost rate				3.50%
Gross proceeds from offering, threshold percentage of expenses for reimbursement				15.00%
SST IV Advisor | Class W
Related Party Transaction [Line Items]
Percentage of offering cost without reimbursement				1.15%
Organization and offering costs not reimbursed				$ 25,000	$ 41,000
SSGT II Advisor
Related Party Transaction [Line Items]
Monthly asset management fee				0.1042%
Monthly asset management fee one twelfth of less than one percentage of average invested assets				one-twelfth of 1.25%
Percentage of distribution from operating partnership				10.00%
Annual aggregate distribution percentage				5.00%
Managed REIT Property Management Agreements
Related Party Transaction [Line Items]
One time fee for former external property managers				$ 3,750
Property management fee, percent fee of gross revenues				6.00%
One time fee for former external property managers				$ 3,750
Managed REIT Property Management Agreements | SST IV Property Manager
Related Party Transaction [Line Items]
Construction management fee				5.00%
Cost of construction or capital improvement work				$ 10,000
Managed REIT Property Management Agreements | Minimum
Related Party Transaction [Line Items]
Our former external property management fee				3,000
Administrative Services Agreement
Related Party Transaction [Line Items]
Receivables due from related parties				50,000
Due to affiliates				345,000
Administrative Services Agreement | Managed REIT Platform Expenses
Related Party Transaction [Line Items]
Administrative service fees				1,900,000	2,100,000
Reimbursements of administrative service fees				$ 400,000	$ 100,000

Summary of Related Party Costs

Summary of Related Party Costs (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Related party costs, Incurred		$ 525,108	$ 8,720,375
Related party costs, Paid		1,135,019	9,646,872
Related party costs, Payable		667,429	1,624,474
Dealer Manager
Related Party Transaction [Line Items]
Related party costs, Payable		667,429	1,277,340
Operating Expenses Expensed
Related Party Transaction [Line Items]
Related party costs, Incurred			975,985
Related party costs, Paid			1,185,370
Transfer Agent fees
Related Party Transaction [Line Items]
Related party costs, Incurred		525,108	324,943
Related party costs, Paid		489,108	374,404
Transfer Agent fees | Dealer Manager
Related Party Transaction [Line Items]
Related party costs, Payable		36,000
Asset management fees
Related Party Transaction [Line Items]
Related party costs, Incurred			3,622,558
Related party costs, Paid			3,622,558
Property management fees
Related Party Transaction [Line Items]
Related party costs, Incurred			2,983,111
Related party costs, Paid			2,983,111
Acquisition expenses
Related Party Transaction [Line Items]
Related party costs, Incurred			84,061
Related party costs, Paid			84,061
Acquisition costs
Related Party Transaction [Line Items]
Related party costs, Incurred			235,932
Related party costs, Paid			235,932
Self Administration Transaction Working Capital True-up
Related Party Transaction [Line Items]
Related party costs, Incurred			493,785
Related party costs, Paid			493,785
Stockholder servicing fee
Related Party Transaction [Line Items]
Related party costs, Paid	[1]	645,911	667,651
Stockholder servicing fee | Dealer Manager
Related Party Transaction [Line Items]
Related party costs, Payable	[1]	$ 631,429	$ 1,277,340
[1]	th

Summary of Related Party Cost_2

Summary of Related Party Costs (Parenthetical) (Detail) - Class T Common stock	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Monthly stockholder servicing fee accrual description	accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Dealer Manager
Related Party Transaction [Line Items]
Monthly stockholder servicing fee accrual description	accrues daily in an amount equal to 1/365th of 1% of the purchase price per share	accrues daily in an amount equal to 1/365th of 1% of the purchase price per share

Related Party Transactions - Su

Related Party Transactions - Summary of Fees and Revenue Related to the Managed REITs (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Managed REIT Platform Revenues		$ 8,048,630	$ 3,068,306
Strategic Storage Trust IV Advisory Agreement
Related Party Transaction [Line Items]
Managed REIT Platform Revenues	[1]	3,211,661	1,153,137
Strategic Storage Growth Trust II Advisory Agreement
Related Party Transaction [Line Items]
Managed REIT Platform Revenues		1,210,529	310,786
Strategic Storage Trust IV Property Management Agreement
Related Party Transaction [Line Items]
Managed REIT Platform Revenues	[1]	1,429,632	602,162
Strategic Storage Growth Trust II Property Management Agreement
Related Party Transaction [Line Items]
Managed REIT Platform Revenues		371,751	91,594
Strategic Storage Trust IV Tenant Program Revenue
Related Party Transaction [Line Items]
Managed REIT Platform Revenues	[1]	893,315	254,148
Strategic Storage Growth Trust II Tenant Program Revenue
Related Party Transaction [Line Items]
Managed REIT Platform Revenues		257,602	37,269
Other Managed REIT Revenue
Related Party Transaction [Line Items]
Managed REIT Platform Revenues	[2]	$ 674,140	$ 619,210
[1]	On March 17, 2021, we acquired SST IV.  Please see Note 16 – Subsequent Events for additional information.
[2]	Such revenues primarily includes construction management, development fees, and other miscellaneous revenues.

Equity Based Compensation - Add

Equity Based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to non-vested equity awards	$ 4,000,000
Unrecognized compensation expense, expected weighted average-recognition period	2 years 6 months
Property Operating Expenses
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 40,000
General and Administrative Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 1,600,000
Time Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Performance Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards vesting date	Mar. 31, 2023
Performance Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	100.00%
Share based compensation arrangement by share based payment award voting rights	do not have
Performance Based Awards | LTIPs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	200.00%
Description of distribution and allocation of profits and losses	Recipients of performance based LTIP Units are issued LTIP Units at 200% of the targeted award and are entitled to receive distributions and allocations of profits and losses with respect to the performance based LTIP Units as of the effective date of January 1, 2020 in an amount equal to 10% of the distributions and allocations available to such LTIP Units, until the Distribution Participation Date (as defined in the Partnership Agreement). The remaining 90% of distributions will accrue and will be payable on the Distribution Participation Date based upon the performance level attained and number of performance based LTIP Units that vest.
Share based compensation arrangement by share based payment award voting rights	one vote per LTIP Unit
Employee and Director Long-term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for issuance | shares	5,356,273
Minimum | Time Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	1 year
Minimum | Performance Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	0.00%
Minimum | Performance Based Awards | LTIPs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	0.00%
Maximum | Time Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Maximum | Performance Based Awards | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	200.00%
Maximum | Performance Based Awards | LTIPs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of established target performance criteria	200.00%

Equity Based Compensation - Sum

Equity Based Compensation - Summary of the Activity Related to Time Based Awards (Details) - Time Based Awards - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested Shares, Beginning balance	265,806	21,438
Unvested Shares, Granted	72,383	251,993
Unvested Shares, Vested	(82,351)	(7,625)
Unvested Shares, Forfeited	(6,567)
Unvested Shares, Ending Balance	249,271	265,806
Unvested Weighted-Average Grant-Date Fair Value, Beginning balance	$ 9.53	$ 10.38
Unvested Weighted-Average Grant-Date Fair Value, Granted	9.78	9.48
Unvested Weighted-Average Grant-Date Fair Value, Vested	9.55	10.29
Unvested Weighted-Average Grant-Date Fair Value, Forfeited	9.78
Unvested Weighted-Average Grant-Date Fair Value, Ending balance	$ 9.58	$ 9.53
LTIPs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested Shares, Granted	214,521
Unvested Shares, Vested	(53,630)
Unvested Shares, Ending Balance	160,891
Unvested Weighted-Average Grant-Date Fair Value, Granted	$ 9.09
Unvested Weighted-Average Grant-Date Fair Value, Vested	9.09
Unvested Weighted-Average Grant-Date Fair Value, Ending balance	$ 9.09

Equity Based Compensation - S_2

Equity Based Compensation - Summary of the Activity Related to Performance Based Awards (Details) - Performance Based Awards	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested Shares, Granted | shares	5,752
Unvested Shares, Ending Balance | shares	5,752
Unvested Weighted-Average Grant-Date Fair Value, Granted | $ / shares	$ 9.78
Unvested Weighted-Average Grant-Date Fair Value, Ending balance | $ / shares	$ 9.78
LTIPs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested Shares, Granted | shares	130,638
Unvested Shares, Ending Balance | shares	130,638
Unvested Weighted-Average Grant-Date Fair Value, Granted | $ / shares	$ 9.09
Unvested Weighted-Average Grant-Date Fair Value, Ending balance | $ / shares	$ 9.09

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Jan. 09, 2017	Nov. 30, 2016	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 20, 2020
Commitments And Contingencies [Line Items]
Additional shares issued pursuant to distribution reinvestment plan, value						$ 15,954,081	$ 16,046,534	$ 16,057,113
Amendment, suspension or termination period of share						30 days
Redemptions of common stock, value						$ 165	$ 592	$ 788
Distribution Reinvestment Plan
Commitments And Contingencies [Line Items]
Amendment, suspension or termination period for distribution reinvestment Plan						10 days
Sales commissions, dealer manager fee, or stockholder servicing fee payable						$ 0
Distribution Reinvestment Plan | Maximum
Commitments And Contingencies [Line Items]
Additional shares issued pursuant to distribution reinvestment plan, value		$ 100,900,000
Share Redemption Program
Commitments And Contingencies [Line Items]
Maximum weighted-average number of shares outstanding percentage						5.00%
Redemptions of common stock (in shares)						2,000,000	4,900,000	8,300,000
Redemptions of common stock, value				$ 400,000	$ 1,300,000	$ 200,000	$ 500,000	$ 900,000
Share Redemption Program | Subsequent Event
Commitments And Contingencies [Line Items]
Redemptions of common stock, value			$ 700,000
Operating Partnership Redemption Rights
Commitments And Contingencies [Line Items]
Number of shares issuable upon conversion of partnership units						1
Requisite minimum outstanding period for conversion eligibility						1 year
Class A and Class T Common Stock | Distribution Reinvestment Plan
Commitments And Contingencies [Line Items]
Estimated value per share under distribution reinvestment plan									$ 10.40
Class A Common stock | Distribution Reinvestment Plan
Commitments And Contingencies [Line Items]
Shares issued pursuant to distribution reinvestment plan	1,100,000					5,300,000
Class T Common stock | Distribution Reinvestment Plan
Commitments And Contingencies [Line Items]
Shares issued pursuant to distribution reinvestment plan	100,000					800,000
Redeemable Common Stock
Commitments And Contingencies [Line Items]
Redemptions of common stock, value						$ 2,009,868	4,881,988	8,325,829
Redeemable Common Stock | Share Redemption Program
Commitments And Contingencies [Line Items]
Redemptions of common stock, value						$ 1,300,000	$ 4,500,000	$ 7,000,000

Declaration of Distributions -

Declaration of Distributions - Additional Information (Detail) - $ / shares	Mar. 03, 2021	Dec. 03, 2020
Class A Common stock
Dividend Declared [Line Items]
Common stock per share outstanding per day declared		$ 0.00164
Cash distribution record date start		Jan. 1, 2021
Cash distribution record date end		Mar. 31, 2021
Class A Common stock | Subsequent Event
Dividend Declared [Line Items]
Common stock per share outstanding per day declared	$ 0.00164
Cash distribution record date start	Apr. 1, 2021
Cash distribution record date end	Jun. 30, 2021
Class T Common stock
Dividend Declared [Line Items]
Common stock per share outstanding per day declared		$ 0.00164
Cash distribution record date start		Jan. 1, 2021
Cash distribution record date end		Mar. 31, 2021
Class T Common stock | Subsequent Event
Dividend Declared [Line Items]
Common stock per share outstanding per day declared	$ 0.00164
Cash distribution record date start	Apr. 1, 2021
Cash distribution record date end	Jun. 30, 2021

Selected Quarterly Data - Summa

Selected Quarterly Data - Summary of Quarterly Financial Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Quarterly Financial Information [Line Items]
Total revenues	$ 32,893,573	$ 31,363,122	$ 29,469,545	$ 30,298,123	$ 30,076,693	$ 29,588,014	$ 25,980,517	$ 23,883,325
Total operating expenses	29,307,135	26,992,137	27,497,027	61,368,274	26,965,933	27,773,486	25,211,611	21,934,203	$ 145,164,573	$ 101,885,233	$ 64,260,814
Operating income (loss)	3,586,438	4,370,985	1,972,518	(31,070,151)	7,055,456	1,814,528	768,906	1,949,122	(21,140,210)	11,588,012	16,151,443
Net loss	(1,943,884)	(4,456,497)	(7,062,841)	(37,743,581)	(4,321,670)	(9,541,579)	(2,283,972)	(8,948,317)	(51,206,803)	(25,095,538)	(3,720,730)
Net loss attributable to common stockholders	$ (4,529,908)	$ (6,259,114)	$ (8,491,421)	$ (35,073,951)	$ (5,431,504)	$ (8,214,826)	$ (2,212,445)	$ (8,891,558)	$ (54,354,394)	$ (24,750,333)	$ (3,698,377)
Class A Common stock
Schedule Of Quarterly Financial Information [Line Items]
Net loss per share-basic and diluted	$ (0.08)	$ (0.10)	$ (0.14)	$ (0.59)	$ (0.09)	$ (0.14)	$ (0.04)	$ (0.15)	$ (0.91)	$ (0.42)	$ (0.06)
Class T Common stock
Schedule Of Quarterly Financial Information [Line Items]
Net loss per share-basic and diluted	$ (0.08)	$ (0.10)	$ (0.14)	$ (0.59)	$ (0.09)	$ (0.14)	$ (0.04)	$ (0.15)	$ (0.91)	$ (0.42)	$ (0.06)

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) $ / shares in Units, $ in Millions

Mar. 24, 2021shares

Mar. 17, 2021USD ($)StorageFacilityState

Mar. 17, 2021CAD ($)StorageFacility

Mar. 11, 2021USD ($)

Jan. 21, 2021USD ($)

Nov. 10, 2020USD ($)StorageFacilityStateRealEstateVenture$ / sharesshares

Jan. 24, 2019

Dec. 31, 2020USD ($)StorageFacilityState$ / shares

Dec. 31, 2019USD ($)$ / shares

Dec. 31, 2018USD ($)

Mar. 10, 2021USD ($)

Oct. 01, 2018StorageFacilityState

Subsequent Event [Line Items]

Stock redeemed during period, value

$ 165

$ 592

$ 788

Number of self storage facilities | StorageFacility

112

Number of states located for self storage facilities | State

17

10

Number of operating real estate properties | StorageFacility

28

Number of development real estate properties | StorageFacility

1

Line of credit facility, term of extension options

1 year

Investment operating partnership

$ 15,624,389

$ 6,072,399

Debt Instrument Carrying Amount

721,512,177

TCF National Bank

Subsequent Event [Line Items]

Mortgage loans on real estate commercial and consumer net

$ 40,700,000

Debt Instrument Fixed Rate

25.00%

KeyBank National Association

Subsequent Event [Line Items]

Mortgage loans on real estate commercial and consumer net

$ 40,500,000

SmartCentres Storage Finance LP

Subsequent Event [Line Items]

Mortgage loans on real estate commercial and consumer net

$ 68,000,000

Debt Instrument Fixed Rate

50.00%

SmartCentres Loan

Subsequent Event [Line Items]

Percentage of ownership interest in joint venture

50.00%

SST IV Merger Agreement

Subsequent Event [Line Items]

Transaction value

$ 380,000,000

Number of operating real estate properties | RealEstateVenture

3

Number of development real estate properties | RealEstateVenture

3

SST IV Merger Agreement | Canada

Subsequent Event [Line Items]

Number of self storage facilities | StorageFacility

24

Number of states located for self storage facilities | State

9

Number of self storage real estate joint ventures | RealEstateVenture

6

Strategic Storage Trust VI, Inc. | Mezzanine Loan | Wholly-Owned Subsidiary of SST VIs Operating Partnership

Subsequent Event [Line Items]

Debt Instrument, Maturity, Description

term of six months; as well as a 180 day extension option

Strategic Storage Trust VI, Inc. | Third Party Mortgage Loan

Subsequent Event [Line Items]

Debt Instrument, Maturity, Description

three year term, with two one year extension options

SST IV Common Stock | SST IV Merger Agreement

Subsequent Event [Line Items]

Common Stock, par value | $ / shares

$ 0.001

Class A Common stock

Subsequent Event [Line Items]

Common Stock, par value | $ / shares

$ 0.001

$ 0.001

Class A Common stock | SST IV Merger Agreement

Subsequent Event [Line Items]

Conversion of right to receive shares, description

converted into the right to receive 2.1875 of our Class A Common Stock

Number of right to receive shares from conversion | shares

2.1875

Subsequent Event | Amendment to Operating Partnership Agreement

Subsequent Event [Line Items]

Percentage of joint venture assets

100.00%

Subsequent Event | Strategic Storage Operating Partnership VI, L.P.

Subsequent Event [Line Items]

Purchase price

$ 16,000,000

Subsequent Event | Affiliate of SmartStop Asset Management, LLC | Class A-2 Units | Class A-2 Units Converted to Class A-1 Units

Subsequent Event [Line Items]

Number of limited partnership units held | shares

1,094,434

Subsequent Event | Affiliate of SmartStop Asset Management, LLC | Class A-1 Units | Class A-2 Units Converted to Class A-1 Units

Subsequent Event [Line Items]

Conversion of partnership units on achievement of first tier of earnout consideration | shares

1,121,795

Subsequent Event | Key Bank

Subsequent Event [Line Items]

Outstanding balance on credit facility

$ 500,000,000

Additional amount available under credit facility

350,000,000

Maximum borrowings under credit facility

850,000,000

Proceeds from line of credit

451,000,000

Subsequent Event | Minimum

Subsequent Event [Line Items]

Credit facility cross default provision amount

$ 75,000,000

Subsequent Event | Security Interest Termination Event | Maximum

Subsequent Event [Line Items]

Capitalization rate leverage ratio

60.00%

60.00%

Secured debt ratio

40.00%

40.00%

Subsequent Event | Security Interest Termination Event | Minimum

Subsequent Event [Line Items]

Credit facility cross default provision amount

$ 25,000,000

fixed charge coverage ratio

1.50

1.50

Unsecured interest coverage ratio

2

2

Subsequent Event | Credit Facility Revolver | Key Bank

Subsequent Event [Line Items]

Outstanding balance on credit facility

$ 250,000,000

Line of credit facility, maturity date

Mar. 17, 2024

Mar. 17, 2024

Line of credit facility, term of extension options

1 year

1 year

Debt instrument, description of variable rate basis

200 basis points over 30-day LIBOR or 30-day CDOR

200 basis points over 30-day LIBOR or 30-day CDOR

Subsequent Event | Credit Facility Revolver | Maximum | Key Bank

Subsequent Event [Line Items]

Line of credit facility, annual unused fee

0.25%

0.25%

Subsequent Event | Credit Facility Revolver | Maximum | Key Bank | Letter of Credit

Subsequent Event [Line Items]

Credit facility sublimits

$ 25,000,000

Subsequent Event | Credit Facility Revolver | Maximum | Key Bank | Swingline Loans

Subsequent Event [Line Items]

Credit facility sublimits

$ 25,000,000

Subsequent Event | Credit Facility Revolver | Minimum | Key Bank

Subsequent Event [Line Items]

Line of credit facility, annual unused fee

0.15%

0.15%

Subsequent Event | Credit Facility Revolver | US Borrowings | Key Bank

Subsequent Event [Line Items]

Proceeds from line of credit

$ 199,000,000

Subsequent Event | Credit Facility Revolver | CAD Borrowings | Key Bank

Subsequent Event [Line Items]

Proceeds from line of credit

2,000,000

$ 2.5

Subsequent Event | Credit Facility Term Loan | Key Bank

Subsequent Event [Line Items]

Outstanding balance on credit facility

$ 250,000,000

Line of credit facility, maturity date

Mar. 17, 2026

Mar. 17, 2026

Line of credit facility, term of extension options

0 years

0 years

Debt instrument, description of variable rate basis

195 basis points over 30-day LIBOR or 30-day CDOR

195 basis points over 30-day LIBOR or 30-day CDOR

Subsequent Event | Credit Facility Term Loan | US Borrowings | Key Bank

Subsequent Event [Line Items]

Proceeds from line of credit

$ 150,000,000

Subsequent Event | Credit Facility Term Loan | CAD Borrowings | Key Bank

Subsequent Event [Line Items]

Proceeds from line of credit

$ 100,000,000

$ 124.7

Subsequent Event | SST IV Merger Agreement

Subsequent Event [Line Items]

Number of self storage facilities | StorageFacility

24

24

Number of states located for self storage facilities | State

9

Subsequent Event | SST IV Merger Agreement | Canada

Subsequent Event [Line Items]

Number of operating real estate properties | StorageFacility

3

Number of development real estate properties | StorageFacility

3

Subsequent Event | Strategic Storage Trust VI, Inc. | Strategic Storage Operating Partnership VI, L.P.

Subsequent Event [Line Items]

Investment operating partnership

$ 5,000,000

Subsequent Event | Strategic Storage Trust VI, Inc. | Mezzanine Loan | Wholly-Owned Subsidiary of SST VIs Operating Partnership

Subsequent Event [Line Items]

Debt Instrument Fixed Rate

8.50%

Debt Instrument Carrying Amount

$ 3,500,000

Debt instrument increased interest rate percentage on exercise of extension option

9.25%

Subsequent Event | Strategic Storage Trust VI, Inc. | Third Party Mortgage Loan

Subsequent Event [Line Items]

Debt Instrument Fixed Rate

3.50%

Debt Instrument Carrying Amount

$ 9,000,000

Subsequent Event | SSGT II Preferred Equity

Subsequent Event [Line Items]

Stock redeemed during period, value

$ 13,500,000

Subsequent Events - Summary of

Subsequent Events - Summary of Wholly-owned Real Estate Portfolio (Detail)	12 Months Ended
	Dec. 31, 2020ft²PropertyUnit
Subsequent Event [Line Items]
No. of Properties | Property	24
Units | Unit	17,820
Sq. Ft. (net) | ft²	2,041,000
% of Total Rentable Sq. Ft.	100.00%
Physical Occupancy %	89.10%
Rental Income %	100.00%
Arizona
Subsequent Event [Line Items]
State	Arizona
No. of Properties | Property	1
Units | Unit	720
Sq. Ft. (net) | ft²	79,000
% of Total Rentable Sq. Ft.	3.90%
Physical Occupancy %	88.80%
Rental Income %	3.00%
California
Subsequent Event [Line Items]
State	California
No. of Properties | Property	2
Units | Unit	1,620
Sq. Ft. (net) | ft²	154,000
% of Total Rentable Sq. Ft.	7.50%
Physical Occupancy %	78.50%
Rental Income %	6.70%
Riverview, Florida
Subsequent Event [Line Items]
State	Florida
No. of Properties | Property	5
Units | Unit	3,830
Sq. Ft. (net) | ft²	519,100
% of Total Rentable Sq. Ft.	25.40%
Physical Occupancy %	87.70%
Rental Income %	24.90%
North Carolina
Subsequent Event [Line Items]
State	North Carolina
No. of Properties | Property	2
Units | Unit	1,910
Sq. Ft. (net) | ft²	176,500
% of Total Rentable Sq. Ft.	8.60%
Physical Occupancy %	85.80%
Rental Income %	7.90%
New Jersey
Subsequent Event [Line Items]
State	New Jersey
No. of Properties | Property	1
Units | Unit	1,900
Sq. Ft. (net) | ft²	158,000
% of Total Rentable Sq. Ft.	7.70%
Physical Occupancy %	90.50%
Rental Income %	11.00%
Nevada
Subsequent Event [Line Items]
State	Nevada
No. of Properties | Property	2
Units | Unit	1,220
Sq. Ft. (net) | ft²	131,500
% of Total Rentable Sq. Ft.	6.40%
Physical Occupancy %	91.90%
Rental Income %	8.00%
Texas
Subsequent Event [Line Items]
State	Texas
No. of Properties | Property	8
Units | Unit	4,610
Sq. Ft. (net) | ft²	605,900
% of Total Rentable Sq. Ft.	29.70%
Physical Occupancy %	92.30%
Rental Income %	25.30%
Virginia
Subsequent Event [Line Items]
State	Virginia
No. of Properties | Property	1
Units | Unit	830
Sq. Ft. (net) | ft²	71,000
% of Total Rentable Sq. Ft.	3.50%
Physical Occupancy %	94.90%
Rental Income %	5.20%
Washington
Subsequent Event [Line Items]
State	Washington
No. of Properties | Property	2
Units | Unit	1,180
Sq. Ft. (net) | ft²	146,000
% of Total Rentable Sq. Ft.	7.30%
Physical Occupancy %	89.20%
Rental Income %	8.00%

Subsequent Events - Summary o_2

Subsequent Events - Summary of Wholly-owned Real Estate Portfolio (Detail) (Parenthetical)	Dec. 31, 2020ft²Unit
Subsequent Event [Line Items]
Units | Unit	17,820
Sq. Ft. (net) | ft²	2,041,000
SST IV Merger Agreement
Subsequent Event [Line Items]
Units | Unit	690
Sq. Ft. (net) | ft²	250,000

Schedule III Real Estate Asset

Schedule III Real Estate Asset and Accumulated Depreciation (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 721,512,177
Initial Cost to Company, Land	334,865,685
Initial Cost to Company, Buildings and Improvements	823,989,800
Initial Cost to Company, Total	1,158,855,485
Cost Capitalized Subsequent to Acquisition	48,490,556
Gross Carrying Amount, Land	335,800,354
Gross Carrying Amount, Buildings and Improvements	874,302,228
Gross Carrying Amount, Total	1,210,102,582	[1]
Accumulated Depreciation	115,903,045
Morrisville | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	3,109,374
Initial Cost to Company, Land	531,000
Initial Cost to Company, Buildings and Improvements	1,891,000
Initial Cost to Company, Total	2,422,000
Cost Capitalized Subsequent to Acquisition	154,693
Gross Carrying Amount, Land	531,000
Gross Carrying Amount, Buildings and Improvements	2,045,693
Gross Carrying Amount, Total	2,576,693	[1]
Accumulated Depreciation	$ 483,118
Date of Construction	2004
Date Acquired	Nov. 3, 2014
Cary | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,289,973
Initial Cost to Company, Land	1,064,000
Initial Cost to Company, Buildings and Improvements	3,301,000
Initial Cost to Company, Total	4,365,000
Cost Capitalized Subsequent to Acquisition	149,566
Gross Carrying Amount, Land	1,064,000
Gross Carrying Amount, Buildings and Improvements	3,450,566
Gross Carrying Amount, Total	4,514,566	[1]
Accumulated Depreciation	$ 781,073
Date of Construction	1998/2005/2006
Date Acquired	Nov. 3, 2014
Raleigh | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,482,344
Initial Cost to Company, Land	1,186,000
Initial Cost to Company, Buildings and Improvements	2,540,000
Initial Cost to Company, Total	3,726,000
Cost Capitalized Subsequent to Acquisition	281,007
Gross Carrying Amount, Land	1,186,000
Gross Carrying Amount, Buildings and Improvements	2,821,007
Gross Carrying Amount, Total	4,007,007	[1]
Accumulated Depreciation	$ 749,096
Date of Construction	1999
Date Acquired	Nov. 3, 2014
Myrtle Beach I | South Carolina | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,606,670
Initial Cost to Company, Land	1,482,000
Initial Cost to Company, Buildings and Improvements	4,476,000
Initial Cost to Company, Total	5,958,000
Cost Capitalized Subsequent to Acquisition	399,692
Gross Carrying Amount, Land	1,482,000
Gross Carrying Amount, Buildings and Improvements	4,875,692
Gross Carrying Amount, Total	6,357,692	[1]
Accumulated Depreciation	$ 1,157,451
Date of Construction	1998/2005-2007
Date Acquired	Nov. 3, 2014
Myrtle Beach II | South Carolina | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,970,422
Initial Cost to Company, Land	1,690,000
Initial Cost to Company, Buildings and Improvements	3,654,000
Initial Cost to Company, Total	5,344,000
Cost Capitalized Subsequent to Acquisition	268,904
Gross Carrying Amount, Land	1,690,000
Gross Carrying Amount, Buildings and Improvements	3,922,904
Gross Carrying Amount, Total	5,612,904	[1]
Accumulated Depreciation	$ 962,322
Date of Construction	1999/2006
Date Acquired	Nov. 3, 2014
Whittier | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,602,761
Initial Cost to Company, Land	2,730,000
Initial Cost to Company, Buildings and Improvements	2,916,875
Initial Cost to Company, Total	5,646,875
Cost Capitalized Subsequent to Acquisition	556,152
Gross Carrying Amount, Land	2,730,000
Gross Carrying Amount, Buildings and Improvements	3,473,027
Gross Carrying Amount, Total	6,203,027	[1]
Accumulated Depreciation	$ 878,394
Date of Construction	1989
Date Acquired	Feb. 19, 2015
La Verne | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,167,492
Initial Cost to Company, Land	1,950,000
Initial Cost to Company, Buildings and Improvements	2,036,875
Initial Cost to Company, Total	3,986,875
Cost Capitalized Subsequent to Acquisition	315,625
Gross Carrying Amount, Land	1,950,000
Gross Carrying Amount, Buildings and Improvements	2,352,500
Gross Carrying Amount, Total	4,302,500	[1]
Accumulated Depreciation	$ 637,553
Date of Construction	1986
Date Acquired	Jan. 23, 2015
Santa Ana | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,196,666
Initial Cost to Company, Land	4,890,000
Initial Cost to Company, Buildings and Improvements	4,006,875
Initial Cost to Company, Total	8,896,875
Cost Capitalized Subsequent to Acquisition	432,696
Gross Carrying Amount, Land	4,890,000
Gross Carrying Amount, Buildings and Improvements	4,439,571
Gross Carrying Amount, Total	9,329,571	[1]
Accumulated Depreciation	$ 1,148,412
Date of Construction	1978
Date Acquired	Feb. 5, 2015
Upland | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,612,920
Initial Cost to Company, Land	2,950,000
Initial Cost to Company, Buildings and Improvements	3,016,875
Initial Cost to Company, Total	5,966,875
Cost Capitalized Subsequent to Acquisition	474,795
Gross Carrying Amount, Land	2,950,000
Gross Carrying Amount, Buildings and Improvements	3,491,670
Gross Carrying Amount, Total	6,441,670	[1]
Accumulated Depreciation	$ 934,042
Date of Construction	1979
Date Acquired	Jan. 29, 2015
La Habra | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,662,412
Initial Cost to Company, Land	2,060,000
Initial Cost to Company, Buildings and Improvements	2,356,875
Initial Cost to Company, Total	4,416,875
Cost Capitalized Subsequent to Acquisition	358,283
Gross Carrying Amount, Land	2,060,000
Gross Carrying Amount, Buildings and Improvements	2,715,158
Gross Carrying Amount, Total	4,775,158	[1]
Accumulated Depreciation	$ 650,124
Date of Construction	1981
Date Acquired	Feb. 5, 2015
Monterey Park | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,573,587
Initial Cost to Company, Land	2,020,000
Initial Cost to Company, Buildings and Improvements	2,216,875
Initial Cost to Company, Total	4,236,875
Cost Capitalized Subsequent to Acquisition	265,392
Gross Carrying Amount, Land	2,020,000
Gross Carrying Amount, Buildings and Improvements	2,482,267
Gross Carrying Amount, Total	4,502,267	[1]
Accumulated Depreciation	$ 592,000
Date of Construction	1987
Date Acquired	Feb. 5, 2015
Huntington Beach | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,978,379
Initial Cost to Company, Land	5,460,000
Initial Cost to Company, Buildings and Improvements	4,856,875
Initial Cost to Company, Total	10,316,875
Cost Capitalized Subsequent to Acquisition	434,564
Gross Carrying Amount, Land	5,460,000
Gross Carrying Amount, Buildings and Improvements	5,291,439
Gross Carrying Amount, Total	10,751,439	[1]
Accumulated Depreciation	$ 1,291,699
Date of Construction	1986
Date Acquired	Feb. 5, 2015
Chico | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,163,063
Initial Cost to Company, Land	400,000
Initial Cost to Company, Buildings and Improvements	1,336,875
Initial Cost to Company, Total	1,736,875
Cost Capitalized Subsequent to Acquisition	301,646
Gross Carrying Amount, Land	400,000
Gross Carrying Amount, Buildings and Improvements	1,638,521
Gross Carrying Amount, Total	2,038,521	[1]
Accumulated Depreciation	$ 424,851
Date of Construction	1984
Date Acquired	Jan. 23, 2015
Lancaster | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,682,730
Initial Cost to Company, Land	200,000
Initial Cost to Company, Buildings and Improvements	1,516,875
Initial Cost to Company, Total	1,716,875
Cost Capitalized Subsequent to Acquisition	388,790
Gross Carrying Amount, Land	200,000
Gross Carrying Amount, Buildings and Improvements	1,905,665
Gross Carrying Amount, Total	2,105,665	[1]
Accumulated Depreciation	$ 535,853
Date of Construction	1980
Date Acquired	Jan. 29, 2015
Lancaster | California | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,350,873
Initial Cost to Company, Land	670,392
Initial Cost to Company, Buildings and Improvements	3,711,424
Initial Cost to Company, Total	4,381,816
Cost Capitalized Subsequent to Acquisition	284,574
Gross Carrying Amount, Land	670,392
Gross Carrying Amount, Buildings and Improvements	3,995,998
Gross Carrying Amount, Total	4,666,390	[1]
Accumulated Depreciation	$ 787,497
Date of Construction	1991
Date Acquired	Jan. 11, 2016
Riverside | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,326,127
Initial Cost to Company, Land	370,000
Initial Cost to Company, Buildings and Improvements	2,326,875
Initial Cost to Company, Total	2,696,875
Cost Capitalized Subsequent to Acquisition	556,660
Gross Carrying Amount, Land	370,000
Gross Carrying Amount, Buildings and Improvements	2,883,535
Gross Carrying Amount, Total	3,253,535	[1]
Accumulated Depreciation	$ 702,132
Date of Construction	1985
Date Acquired	Jan. 23, 2015
Fairfield | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,746,809
Initial Cost to Company, Land	730,000
Initial Cost to Company, Buildings and Improvements	2,946,875
Initial Cost to Company, Total	3,676,875
Cost Capitalized Subsequent to Acquisition	219,987
Gross Carrying Amount, Land	730,000
Gross Carrying Amount, Buildings and Improvements	3,166,862
Gross Carrying Amount, Total	3,896,862	[1]
Accumulated Depreciation	$ 752,721
Date of Construction	1984
Date Acquired	Jan. 23, 2015
Lompoc | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,821,047
Initial Cost to Company, Land	1,000,000
Initial Cost to Company, Buildings and Improvements	2,746,875
Initial Cost to Company, Total	3,746,875
Cost Capitalized Subsequent to Acquisition	196,871
Gross Carrying Amount, Land	1,000,000
Gross Carrying Amount, Buildings and Improvements	2,943,746
Gross Carrying Amount, Total	3,943,746	[1]
Accumulated Depreciation	$ 700,266
Date of Construction	1982
Date Acquired	Feb. 5, 2015
Santa Rosa | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 7,324,823
Initial Cost to Company, Land	3,150,000
Initial Cost to Company, Buildings and Improvements	6,716,875
Initial Cost to Company, Total	9,866,875
Cost Capitalized Subsequent to Acquisition	570,137
Gross Carrying Amount, Land	3,150,000
Gross Carrying Amount, Buildings and Improvements	7,287,012
Gross Carrying Amount, Total	10,437,012	[1]
Accumulated Depreciation	$ 1,713,660
Date of Construction	1979-1981
Date Acquired	Jan. 29, 2015
Vallejo | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,237,821
Initial Cost to Company, Land	990,000
Initial Cost to Company, Buildings and Improvements	3,946,875
Initial Cost to Company, Total	4,936,875
Cost Capitalized Subsequent to Acquisition	300,667
Gross Carrying Amount, Land	990,000
Gross Carrying Amount, Buildings and Improvements	4,247,542
Gross Carrying Amount, Total	5,237,542	[1]
Accumulated Depreciation	$ 1,005,091
Date of Construction	1981
Date Acquired	Jan. 29, 2015
Federal Heights | Colorado
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,375,619
Initial Cost to Company, Land	1,100,000
Initial Cost to Company, Buildings and Improvements	3,346,875
Initial Cost to Company, Total	4,446,875
Cost Capitalized Subsequent to Acquisition	384,145
Gross Carrying Amount, Land	1,100,000
Gross Carrying Amount, Buildings and Improvements	3,731,020
Gross Carrying Amount, Total	4,831,020	[1]
Accumulated Depreciation	$ 1,028,501
Date of Construction	1983
Date Acquired	Jan. 29, 2015
Aurora | Colorado
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,800,729
Initial Cost to Company, Land	810,000
Initial Cost to Company, Buildings and Improvements	5,906,875
Initial Cost to Company, Total	6,716,875
Cost Capitalized Subsequent to Acquisition	623,921
Gross Carrying Amount, Land	810,000
Gross Carrying Amount, Buildings and Improvements	6,530,796
Gross Carrying Amount, Total	7,340,796	[1]
Accumulated Depreciation	$ 1,552,900
Date of Construction	1984
Date Acquired	Feb. 5, 2015
Littleton | Colorado
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,177,650
Initial Cost to Company, Land	1,680,000
Initial Cost to Company, Buildings and Improvements	2,456,875
Initial Cost to Company, Total	4,136,875
Cost Capitalized Subsequent to Acquisition	325,375
Gross Carrying Amount, Land	1,680,000
Gross Carrying Amount, Buildings and Improvements	2,782,250
Gross Carrying Amount, Total	4,462,250	[1]
Accumulated Depreciation	$ 704,722
Date of Construction	1985
Date Acquired	Jan. 23, 2015
Bloomingdale | Illinois
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,375,619
Initial Cost to Company, Land	810,000
Initial Cost to Company, Buildings and Improvements	3,856,874
Initial Cost to Company, Total	4,666,874
Cost Capitalized Subsequent to Acquisition	438,757
Gross Carrying Amount, Land	810,000
Gross Carrying Amount, Buildings and Improvements	4,295,631
Gross Carrying Amount, Total	5,105,631	[1]
Accumulated Depreciation	$ 988,929
Date of Construction	1987
Date Acquired	Feb. 19, 2015
Crestwood | Illinois
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,633,238
Initial Cost to Company, Land	250,000
Initial Cost to Company, Buildings and Improvements	2,096,875
Initial Cost to Company, Total	2,346,875
Cost Capitalized Subsequent to Acquisition	400,190
Gross Carrying Amount, Land	250,000
Gross Carrying Amount, Buildings and Improvements	2,497,065
Gross Carrying Amount, Total	2,747,065	[1]
Accumulated Depreciation	$ 620,585
Date of Construction	1987
Date Acquired	Jan. 23, 2015
Forestville | Maryland
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,464,444
Initial Cost to Company, Land	1,940,000
Initial Cost to Company, Buildings and Improvements	4,346,875
Initial Cost to Company, Total	6,286,875
Cost Capitalized Subsequent to Acquisition	1,134,128
Gross Carrying Amount, Land	1,940,000
Gross Carrying Amount, Buildings and Improvements	5,481,003
Gross Carrying Amount, Total	7,421,003	[1]
Accumulated Depreciation	$ 1,467,936
Date of Construction	1988
Date Acquired	Jan. 23, 2015
Warren | Michigan | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,954,936
Initial Cost to Company, Land	230,000
Initial Cost to Company, Buildings and Improvements	2,966,875
Initial Cost to Company, Total	3,196,875
Cost Capitalized Subsequent to Acquisition	540,970
Gross Carrying Amount, Land	230,000
Gross Carrying Amount, Buildings and Improvements	3,507,845
Gross Carrying Amount, Total	3,737,845	[1]
Accumulated Depreciation	$ 826,849
Date of Construction	1996
Date Acquired	May 8, 2015
Warren | Michigan | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,251,889
Initial Cost to Company, Land	240,000
Initial Cost to Company, Buildings and Improvements	3,066,875
Initial Cost to Company, Total	3,306,875
Cost Capitalized Subsequent to Acquisition	676,260
Gross Carrying Amount, Land	240,000
Gross Carrying Amount, Buildings and Improvements	3,743,135
Gross Carrying Amount, Total	3,983,135	[1]
Accumulated Depreciation	$ 930,488
Date of Construction	1987
Date Acquired	May 8, 2015
Sterling Heights | Michigan
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,301,381
Initial Cost to Company, Land	250,000
Initial Cost to Company, Buildings and Improvements	3,286,875
Initial Cost to Company, Total	3,536,875
Cost Capitalized Subsequent to Acquisition	822,804
Gross Carrying Amount, Land	250,000
Gross Carrying Amount, Buildings and Improvements	4,109,679
Gross Carrying Amount, Total	4,359,679	[1]
Accumulated Depreciation	$ 925,909
Date of Construction	1977
Date Acquired	May 21, 2015
Troy | Michigan
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,414,952
Initial Cost to Company, Land	240,000
Initial Cost to Company, Buildings and Improvements	4,176,875
Initial Cost to Company, Total	4,416,875
Cost Capitalized Subsequent to Acquisition	312,636
Gross Carrying Amount, Land	240,000
Gross Carrying Amount, Buildings and Improvements	4,489,511
Gross Carrying Amount, Total	4,729,511	[1]
Accumulated Depreciation	$ 1,035,935
Date of Construction	1988
Date Acquired	May 8, 2015
Troy | Ohio
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,988,229
Initial Cost to Company, Land	150,666
Initial Cost to Company, Buildings and Improvements	2,596,010
Initial Cost to Company, Total	2,746,676
Cost Capitalized Subsequent to Acquisition	147,296
Gross Carrying Amount, Land	150,666
Gross Carrying Amount, Buildings and Improvements	2,743,306
Gross Carrying Amount, Total	2,893,972	[1]
Accumulated Depreciation	$ 578,732
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Beverly | New Jersey
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,385,778
Initial Cost to Company, Land	400,000
Initial Cost to Company, Buildings and Improvements	1,696,875
Initial Cost to Company, Total	2,096,875
Cost Capitalized Subsequent to Acquisition	335,408
Gross Carrying Amount, Land	400,000
Gross Carrying Amount, Buildings and Improvements	2,032,283
Gross Carrying Amount, Total	2,432,283	[1]
Accumulated Depreciation	$ 440,895
Date of Construction	1988
Date Acquired	May 28, 2015
Everett | Washington
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,722,063
Initial Cost to Company, Land	2,010,000
Initial Cost to Company, Buildings and Improvements	2,956,875
Initial Cost to Company, Total	4,966,875
Cost Capitalized Subsequent to Acquisition	639,767
Gross Carrying Amount, Land	2,010,000
Gross Carrying Amount, Buildings and Improvements	3,596,642
Gross Carrying Amount, Total	5,606,642	[1]
Accumulated Depreciation	$ 846,506
Date of Construction	1986
Date Acquired	Feb. 5, 2015
Foley | Alabama
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,132,587
Initial Cost to Company, Land	1,839,000
Initial Cost to Company, Buildings and Improvements	5,717,000
Initial Cost to Company, Total	7,556,000
Cost Capitalized Subsequent to Acquisition	794,161
Gross Carrying Amount, Land	1,839,000
Gross Carrying Amount, Buildings and Improvements	6,511,161
Gross Carrying Amount, Total	8,350,161	[1]
Accumulated Depreciation	$ 1,423,786
Date of Construction	1985/1996/2006
Date Acquired	Sep. 11, 2015
Tampa | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,633,238
Initial Cost to Company, Land	718,244
Initial Cost to Company, Buildings and Improvements	2,257,471
Initial Cost to Company, Total	2,975,715
Cost Capitalized Subsequent to Acquisition	584,751
Gross Carrying Amount, Land	718,244
Gross Carrying Amount, Buildings and Improvements	2,842,222
Gross Carrying Amount, Total	3,560,466	[1]
Accumulated Depreciation	$ 598,303
Date of Construction	1985
Date Acquired	Nov. 3, 2015
Boynton Beach | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,166,188
Initial Cost to Company, Land	1,983,491
Initial Cost to Company, Buildings and Improvements	15,232,817
Initial Cost to Company, Total	17,216,308
Cost Capitalized Subsequent to Acquisition	497,684
Gross Carrying Amount, Land	1,983,491
Gross Carrying Amount, Buildings and Improvements	15,730,501
Gross Carrying Amount, Total	17,713,992	[1]
Accumulated Depreciation	$ 2,398,657
Date of Construction	2004
Date Acquired	Jan. 7, 2016
Milton | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,068,742	[2]
Initial Cost to Company, Land	1,452,870	[2]
Initial Cost to Company, Buildings and Improvements	7,929,810	[2]
Initial Cost to Company, Total	9,382,680	[2]
Cost Capitalized Subsequent to Acquisition	1,185,101	[2],[3]
Gross Carrying Amount, Land	1,584,505	[2]
Gross Carrying Amount, Buildings and Improvements	8,983,276	[2]
Gross Carrying Amount, Total	10,567,781	[1],[2]
Accumulated Depreciation	$ 1,346,290	[2]
Date of Construction	2006	[2]
Date Acquired	Feb. 11, 2016	[2]
Burlington | Canada | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,674,806	[2]
Initial Cost to Company, Land	3,293,267	[2]
Initial Cost to Company, Buildings and Improvements	10,278,861	[2]
Initial Cost to Company, Total	13,572,128	[2]
Cost Capitalized Subsequent to Acquisition	1,605,918	[2],[3]
Gross Carrying Amount, Land	3,591,649	[2]
Gross Carrying Amount, Buildings and Improvements	11,586,397	[2]
Gross Carrying Amount, Total	15,178,046	[1],[2]
Accumulated Depreciation	$ 1,754,755	[2]
Date of Construction	2011	[2]
Date Acquired	Feb. 11, 2016	[2]
Burlington | Canada | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,837,403	[2]
Initial Cost to Company, Land	2,944,035	[2]
Initial Cost to Company, Buildings and Improvements	5,125,839	[2]
Initial Cost to Company, Total	8,069,874	[2]
Cost Capitalized Subsequent to Acquisition	707,348	[2],[3]
Gross Carrying Amount, Land	3,122,504	[2]
Gross Carrying Amount, Buildings and Improvements	5,654,718	[2]
Gross Carrying Amount, Total	8,777,222	[1],[2]
Accumulated Depreciation	$ 875,180	[2]
Date of Construction	2008	[2]
Date Acquired	Feb. 29, 2016	[2]
Oakville | Canada | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,684,411	[2]
Initial Cost to Company, Land	2,655,215	[2]
Initial Cost to Company, Buildings and Improvements	13,072,458	[2]
Initial Cost to Company, Total	15,727,673	[2]
Cost Capitalized Subsequent to Acquisition	3,440,072	[2],[3]
Gross Carrying Amount, Land	2,895,786	[2]
Gross Carrying Amount, Buildings and Improvements	16,271,959	[2]
Gross Carrying Amount, Total	19,167,745	[1],[2]
Accumulated Depreciation	$ 2,510,039	[2]
Date of Construction	2016	[2]
Date Acquired	Feb. 11, 2016	[2]
Oakville | Canada | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 7,827,797	[2]
Initial Cost to Company, Land	2,983,307	[2]
Initial Cost to Company, Buildings and Improvements	9,346,283	[2]
Initial Cost to Company, Total	12,329,590	[2]
Cost Capitalized Subsequent to Acquisition	1,082,649	[2],[3]
Gross Carrying Amount, Land	3,164,156	[2]
Gross Carrying Amount, Buildings and Improvements	10,248,083	[2]
Gross Carrying Amount, Total	13,412,239	[1],[2]
Accumulated Depreciation	$ 1,596,679	[2]
Date of Construction	2004	[2]
Date Acquired	Feb. 29, 2016	[2]
Xenia | Ohio
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,705,559
Initial Cost to Company, Land	275,493
Initial Cost to Company, Buildings and Improvements	2,664,693
Initial Cost to Company, Total	2,940,186
Cost Capitalized Subsequent to Acquisition	109,253
Gross Carrying Amount, Land	275,493
Gross Carrying Amount, Buildings and Improvements	2,773,946
Gross Carrying Amount, Total	3,049,439	[1]
Accumulated Depreciation	$ 515,997
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Sidney | Ohio
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,817,166
Initial Cost to Company, Land	255,246
Initial Cost to Company, Buildings and Improvements	1,806,349
Initial Cost to Company, Total	2,061,595
Cost Capitalized Subsequent to Acquisition	186,550
Gross Carrying Amount, Land	255,246
Gross Carrying Amount, Buildings and Improvements	1,992,899
Gross Carrying Amount, Total	2,248,145	[1]
Accumulated Depreciation	$ 541,954
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Greenville | Ohio
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,897,929
Initial Cost to Company, Land	82,598
Initial Cost to Company, Buildings and Improvements	1,909,466
Initial Cost to Company, Total	1,992,064
Cost Capitalized Subsequent to Acquisition	146,559
Gross Carrying Amount, Land	82,598
Gross Carrying Amount, Buildings and Improvements	2,056,025
Gross Carrying Amount, Total	2,138,623	[1]
Accumulated Depreciation	$ 373,694
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Washington Court House | Ohio
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,947,848
Initial Cost to Company, Land	255,456
Initial Cost to Company, Buildings and Improvements	1,882,203
Initial Cost to Company, Total	2,137,659
Cost Capitalized Subsequent to Acquisition	133,867
Gross Carrying Amount, Land	255,456
Gross Carrying Amount, Buildings and Improvements	2,016,070
Gross Carrying Amount, Total	2,271,526	[1]
Accumulated Depreciation	$ 377,892
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Richmond | Indiana
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,988,229
Initial Cost to Company, Land	223,159
Initial Cost to Company, Buildings and Improvements	2,944,379
Initial Cost to Company, Total	3,167,538
Cost Capitalized Subsequent to Acquisition	173,202
Gross Carrying Amount, Land	223,159
Gross Carrying Amount, Buildings and Improvements	3,117,581
Gross Carrying Amount, Total	3,340,740	[1]
Accumulated Depreciation	$ 600,924
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Connersville | Indiana
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,857,548
Initial Cost to Company, Land	155,533
Initial Cost to Company, Buildings and Improvements	1,652,290
Initial Cost to Company, Total	1,807,823
Cost Capitalized Subsequent to Acquisition	103,000
Gross Carrying Amount, Land	155,533
Gross Carrying Amount, Buildings and Improvements	1,755,290
Gross Carrying Amount, Total	1,910,823	[1]
Accumulated Depreciation	$ 339,460
Date of Construction	2003
Date Acquired	Apr. 20, 2016
Port St. Lucie | Riverview, Florida | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 7,430,191
Initial Cost to Company, Land	2,589,781
Initial Cost to Company, Buildings and Improvements	6,339,578
Initial Cost to Company, Total	8,929,359
Cost Capitalized Subsequent to Acquisition	211,938
Gross Carrying Amount, Land	2,589,781
Gross Carrying Amount, Buildings and Improvements	6,551,516
Gross Carrying Amount, Total	9,141,297	[1]
Accumulated Depreciation	$ 1,089,677
Date of Construction	1999
Date Acquired	Apr. 29, 2016
Port St. Lucie | Riverview, Florida | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 7,264,947
Initial Cost to Company, Land	5,130,621
Initial Cost to Company, Buildings and Improvements	8,410,474
Initial Cost to Company, Total	13,541,095
Cost Capitalized Subsequent to Acquisition	345,056
Gross Carrying Amount, Land	5,130,621
Gross Carrying Amount, Buildings and Improvements	8,755,530
Gross Carrying Amount, Total	13,886,151	[1]
Accumulated Depreciation	$ 1,477,030
Date of Construction	2002
Date Acquired	Jun. 1, 2016
Sacramento | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,157,058
Initial Cost to Company, Land	1,205,209
Initial Cost to Company, Buildings and Improvements	6,616,767
Initial Cost to Company, Total	7,821,976
Cost Capitalized Subsequent to Acquisition	212,938
Gross Carrying Amount, Land	1,205,209
Gross Carrying Amount, Buildings and Improvements	6,829,705
Gross Carrying Amount, Total	8,034,914	[1]
Accumulated Depreciation	$ 1,038,002
Date of Construction	2006
Date Acquired	May 9, 2016
Oakland | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 13,325,887
Initial Cost to Company, Land	5,711,189
Initial Cost to Company, Buildings and Improvements	6,902,446
Initial Cost to Company, Total	12,613,635
Cost Capitalized Subsequent to Acquisition	219,600
Gross Carrying Amount, Land	5,711,189
Gross Carrying Amount, Buildings and Improvements	7,122,046
Gross Carrying Amount, Total	12,833,235	[1]
Accumulated Depreciation	$ 1,072,552
Date of Construction	1979
Date Acquired	May 18, 2016
Concord | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 32,628,233
Initial Cost to Company, Land	19,090,003
Initial Cost to Company, Buildings and Improvements	17,202,868
Initial Cost to Company, Total	36,292,871
Cost Capitalized Subsequent to Acquisition	387,750
Gross Carrying Amount, Land	19,090,003
Gross Carrying Amount, Buildings and Improvements	17,590,618
Gross Carrying Amount, Total	36,680,621	[1]
Accumulated Depreciation	$ 2,743,596
Date of Construction	1988/1998
Date Acquired	May 18, 2016
Pompano Beach | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,590,310
Initial Cost to Company, Land	3,947,715
Initial Cost to Company, Buildings and Improvements	16,656,002
Initial Cost to Company, Total	20,603,717
Cost Capitalized Subsequent to Acquisition	246,372
Gross Carrying Amount, Land	3,947,715
Gross Carrying Amount, Buildings and Improvements	16,902,374
Gross Carrying Amount, Total	20,850,089	[1]
Accumulated Depreciation	$ 2,314,967
Date of Construction	1979
Date Acquired	Jun. 1, 2016
Lake Worth | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,308,370
Initial Cost to Company, Land	12,108,208
Initial Cost to Company, Buildings and Improvements	10,804,173
Initial Cost to Company, Total	22,912,381
Cost Capitalized Subsequent to Acquisition	320,345
Gross Carrying Amount, Land	12,108,208
Gross Carrying Amount, Buildings and Improvements	11,124,518
Gross Carrying Amount, Total	23,232,726	[1]
Accumulated Depreciation	$ 2,104,765
Date of Construction	1998/2003
Date Acquired	Jun. 1, 2016
Jupiter | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 11,568,280
Initial Cost to Company, Land	16,029,881
Initial Cost to Company, Buildings and Improvements	10,556,833
Initial Cost to Company, Total	26,586,714
Cost Capitalized Subsequent to Acquisition	299,814
Gross Carrying Amount, Land	16,029,881
Gross Carrying Amount, Buildings and Improvements	10,856,647
Gross Carrying Amount, Total	26,886,528	[1]
Accumulated Depreciation	$ 1,720,706
Date of Construction	1992/2012
Date Acquired	Jun. 1, 2016
Royal Palm Beach | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,678,415
Initial Cost to Company, Land	11,425,394
Initial Cost to Company, Buildings and Improvements	13,275,322
Initial Cost to Company, Total	24,700,716
Cost Capitalized Subsequent to Acquisition	187,370
Gross Carrying Amount, Land	11,425,394
Gross Carrying Amount, Buildings and Improvements	13,462,692
Gross Carrying Amount, Total	24,888,086	[1]
Accumulated Depreciation	$ 2,404,301
Date of Construction	2001/2003
Date Acquired	Jun. 1, 2016
Wellington | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 14,456,568
Initial Cost to Company, Land	10,233,511
Initial Cost to Company, Buildings and Improvements	11,662,801
Initial Cost to Company, Total	21,896,312
Cost Capitalized Subsequent to Acquisition	137,696
Gross Carrying Amount, Land	10,233,511
Gross Carrying Amount, Buildings and Improvements	11,800,497
Gross Carrying Amount, Total	22,034,008	[1]
Accumulated Depreciation	$ 1,747,065
Date of Construction	2005
Date Acquired	Jun. 1, 2016
Doral | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 14,133,517
Initial Cost to Company, Land	11,335,658
Initial Cost to Company, Buildings and Improvements	11,485,045
Initial Cost to Company, Total	22,820,703
Cost Capitalized Subsequent to Acquisition	309,000
Gross Carrying Amount, Land	11,335,658
Gross Carrying Amount, Buildings and Improvements	11,794,045
Gross Carrying Amount, Total	23,129,703	[1]
Accumulated Depreciation	$ 1,775,725
Date of Construction	1998
Date Acquired	Jun. 1, 2016
Plantation | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 15,969,792
Initial Cost to Company, Land	12,989,079
Initial Cost to Company, Buildings and Improvements	19,224,919
Initial Cost to Company, Total	32,213,998
Cost Capitalized Subsequent to Acquisition	460,227
Gross Carrying Amount, Land	12,989,079
Gross Carrying Amount, Buildings and Improvements	19,685,146
Gross Carrying Amount, Total	32,674,225	[1]
Accumulated Depreciation	$ 2,896,603
Date of Construction	2002/2012
Date Acquired	Jun. 1, 2016
Naples | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 14,214,280
Initial Cost to Company, Land	11,789,085
Initial Cost to Company, Buildings and Improvements	12,771,305
Initial Cost to Company, Total	24,560,390
Cost Capitalized Subsequent to Acquisition	255,610
Gross Carrying Amount, Land	11,789,085
Gross Carrying Amount, Buildings and Improvements	13,026,915
Gross Carrying Amount, Total	24,816,000	[1]
Accumulated Depreciation	$ 1,902,481
Date of Construction	2002
Date Acquired	Jun. 1, 2016
Delray | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 11,854,625
Initial Cost to Company, Land	17,096,692
Initial Cost to Company, Buildings and Improvements	12,983,627
Initial Cost to Company, Total	30,080,319
Cost Capitalized Subsequent to Acquisition	241,033
Gross Carrying Amount, Land	17,096,692
Gross Carrying Amount, Buildings and Improvements	13,224,660
Gross Carrying Amount, Total	30,321,352	[1]
Accumulated Depreciation	$ 1,991,270
Date of Construction	2003
Date Acquired	Jun. 1, 2016
Baltimore | Maryland
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 16,293,926
Initial Cost to Company, Land	3,897,872
Initial Cost to Company, Buildings and Improvements	22,427,843
Initial Cost to Company, Total	26,325,715
Cost Capitalized Subsequent to Acquisition	469,901
Gross Carrying Amount, Land	3,897,872
Gross Carrying Amount, Buildings and Improvements	22,897,744
Gross Carrying Amount, Total	26,795,616	[1]
Accumulated Depreciation	$ 3,535,225
Date of Construction	1990/2014
Date Acquired	Jun. 1, 2016
Sonoma | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,283,197
Initial Cost to Company, Land	3,468,153
Initial Cost to Company, Buildings and Improvements	3,679,939
Initial Cost to Company, Total	7,148,092
Cost Capitalized Subsequent to Acquisition	155,859
Gross Carrying Amount, Land	3,468,153
Gross Carrying Amount, Buildings and Improvements	3,835,798
Gross Carrying Amount, Total	7,303,951	[1]
Accumulated Depreciation	$ 612,444
Date of Construction	1984
Date Acquired	Jun. 14, 2016
Las Vegas I | Nevada | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,210,195
Initial Cost to Company, Land	2,391,220
Initial Cost to Company, Buildings and Improvements	11,117,892
Initial Cost to Company, Total	13,509,112
Cost Capitalized Subsequent to Acquisition	210,409
Gross Carrying Amount, Land	2,391,220
Gross Carrying Amount, Buildings and Improvements	11,328,301
Gross Carrying Amount, Total	13,719,521	[1]
Accumulated Depreciation	$ 1,539,337
Date of Construction	2002
Date Acquired	Jul. 28, 2016
Las Vegas II | Nevada | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,471,995
Initial Cost to Company, Land	3,840,088
Initial Cost to Company, Buildings and Improvements	9,916,937
Initial Cost to Company, Total	13,757,025
Cost Capitalized Subsequent to Acquisition	176,148
Gross Carrying Amount, Land	3,840,088
Gross Carrying Amount, Buildings and Improvements	10,093,085
Gross Carrying Amount, Total	13,933,173	[1]
Accumulated Depreciation	$ 1,459,661
Date of Construction	2000
Date Acquired	Sep. 23, 2016
Las Vegas III | Nevada | Property Three
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,544,997
Initial Cost to Company, Land	2,565,579
Initial Cost to Company, Buildings and Improvements	6,338,944
Initial Cost to Company, Total	8,904,523
Cost Capitalized Subsequent to Acquisition	254,770
Gross Carrying Amount, Land	2,565,579
Gross Carrying Amount, Buildings and Improvements	6,593,714
Gross Carrying Amount, Total	9,159,293	[1]
Accumulated Depreciation	$ 978,873
Date of Construction	1989
Date Acquired	Sep. 27, 2016
Asheville I | North Carolina | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 7,019,318
Initial Cost to Company, Land	3,619,676
Initial Cost to Company, Buildings and Improvements	11,173,603
Initial Cost to Company, Total	14,793,279
Cost Capitalized Subsequent to Acquisition	426,488
Gross Carrying Amount, Land	3,619,676
Gross Carrying Amount, Buildings and Improvements	11,600,091
Gross Carrying Amount, Total	15,219,767	[1]
Accumulated Depreciation	$ 1,654,688
Date of Construction	1988/2005/2015
Date Acquired	Dec. 30, 2016
Asheville II | North Carolina | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,193,545
Initial Cost to Company, Land	1,764,969
Initial Cost to Company, Buildings and Improvements	3,107,311
Initial Cost to Company, Total	4,872,280
Cost Capitalized Subsequent to Acquisition	136,440
Gross Carrying Amount, Land	1,764,969
Gross Carrying Amount, Buildings and Improvements	3,243,751
Gross Carrying Amount, Total	5,008,720	[1]
Accumulated Depreciation	$ 496,179
Date of Construction	1984
Date Acquired	Dec. 30, 2016
Hendersonville I | North Carolina | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,204,681
Initial Cost to Company, Land	1,081,547
Initial Cost to Company, Buildings and Improvements	3,441,204
Initial Cost to Company, Total	4,522,751
Cost Capitalized Subsequent to Acquisition	174,583
Gross Carrying Amount, Land	1,081,547
Gross Carrying Amount, Buildings and Improvements	3,615,787
Gross Carrying Amount, Total	4,697,334	[1]
Accumulated Depreciation	$ 516,311
Date of Construction	1982
Date Acquired	Dec. 30, 2016
Asheville III | North Carolina | Property Three
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,595,788
Initial Cost to Company, Land	5,096,833
Initial Cost to Company, Buildings and Improvements	4,620,013
Initial Cost to Company, Total	9,716,846
Cost Capitalized Subsequent to Acquisition	237,943
Gross Carrying Amount, Land	5,096,833
Gross Carrying Amount, Buildings and Improvements	4,857,956
Gross Carrying Amount, Total	9,954,789	[1]
Accumulated Depreciation	$ 763,659
Date of Construction	1991/2002
Date Acquired	Dec. 30, 2016
Arden | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,443,829
Initial Cost to Company, Land	1,790,118
Initial Cost to Company, Buildings and Improvements	10,265,741
Initial Cost to Company, Total	12,055,859
Cost Capitalized Subsequent to Acquisition	286,135
Gross Carrying Amount, Land	1,790,118
Gross Carrying Amount, Buildings and Improvements	10,551,876
Gross Carrying Amount, Total	12,341,994	[1]
Accumulated Depreciation	$ 1,347,993
Date of Construction	1973
Date Acquired	Dec. 30, 2016
Asheville IV | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,336,414
Initial Cost to Company, Land	4,558,139
Initial Cost to Company, Buildings and Improvements	4,455,118
Initial Cost to Company, Total	9,013,257
Cost Capitalized Subsequent to Acquisition	161,485
Gross Carrying Amount, Land	4,558,139
Gross Carrying Amount, Buildings and Improvements	4,616,603
Gross Carrying Amount, Total	9,174,742	[1]
Accumulated Depreciation	$ 738,658
Date of Construction	1985/1986/2005
Date Acquired	Dec. 30, 2016
Asheville V | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,984,850
Initial Cost to Company, Land	2,414,680
Initial Cost to Company, Buildings and Improvements	7,826,417
Initial Cost to Company, Total	10,241,097
Cost Capitalized Subsequent to Acquisition	237,279
Gross Carrying Amount, Land	2,414,680
Gross Carrying Amount, Buildings and Improvements	8,063,696
Gross Carrying Amount, Total	10,478,376	[1]
Accumulated Depreciation	$ 1,155,385
Date of Construction	1978/2009/2014
Date Acquired	Dec. 30, 2016
Asheville VI | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,428,604
Initial Cost to Company, Land	1,306,240
Initial Cost to Company, Buildings and Improvements	5,121,332
Initial Cost to Company, Total	6,427,572
Cost Capitalized Subsequent to Acquisition	191,332
Gross Carrying Amount, Land	1,306,240
Gross Carrying Amount, Buildings and Improvements	5,312,664
Gross Carrying Amount, Total	6,618,904	[1]
Accumulated Depreciation	$ 702,186
Date of Construction	2004
Date Acquired	Dec. 30, 2016
Asheville VIII | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,457,995
Initial Cost to Company, Land	1,764,965
Initial Cost to Company, Buildings and Improvements	6,162,855
Initial Cost to Company, Total	7,927,820
Cost Capitalized Subsequent to Acquisition	253,925
Gross Carrying Amount, Land	1,764,965
Gross Carrying Amount, Buildings and Improvements	6,416,780
Gross Carrying Amount, Total	8,181,745	[1]
Accumulated Depreciation	$ 939,546
Date of Construction	1968/2002
Date Acquired	Dec. 30, 2016
Hendersonville II | North Carolina | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,198,620
Initial Cost to Company, Land	2,597,584
Initial Cost to Company, Buildings and Improvements	5,037,350
Initial Cost to Company, Total	7,634,934
Cost Capitalized Subsequent to Acquisition	231,075
Gross Carrying Amount, Land	2,597,584
Gross Carrying Amount, Buildings and Improvements	5,268,425
Gross Carrying Amount, Total	7,866,009	[1]
Accumulated Depreciation	$ 894,115
Date of Construction	1989/2003
Date Acquired	Dec. 30, 2016
Asheville VII | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 1,564,351
Initial Cost to Company, Land	782,457
Initial Cost to Company, Buildings and Improvements	2,139,791
Initial Cost to Company, Total	2,922,248
Cost Capitalized Subsequent to Acquisition	77,153
Gross Carrying Amount, Land	782,457
Gross Carrying Amount, Buildings and Improvements	2,216,944
Gross Carrying Amount, Total	2,999,401	[1]
Accumulated Depreciation	$ 344,297
Date of Construction	1999
Date Acquired	Dec. 30, 2016
Sweeten Creek Land | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 348,480
Initial Cost to Company, Total	348,480
Gross Carrying Amount, Land	348,480
Gross Carrying Amount, Total	$ 348,480	[1]
Date of Construction	N/A
Date Acquired	Dec. 30, 2016
Highland Center Land | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 50,000
Initial Cost to Company, Total	50,000
Gross Carrying Amount, Land	50,000
Gross Carrying Amount, Total	$ 50,000	[1]
Date of Construction	N/A
Date Acquired	Dec. 30, 2016
Aurora II | Colorado | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,560,873
Initial Cost to Company, Land	1,584,664
Initial Cost to Company, Buildings and Improvements	8,196,091
Initial Cost to Company, Total	9,780,755
Cost Capitalized Subsequent to Acquisition	133,413
Gross Carrying Amount, Land	1,584,664
Gross Carrying Amount, Buildings and Improvements	8,329,504
Gross Carrying Amount, Total	9,914,168	[1]
Accumulated Depreciation	$ 1,292,252
Date of Construction	2012
Date Acquired	Jan. 11, 2017
Dufferin | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 18,821,895	[2]
Initial Cost to Company, Land	6,258,511	[2]
Initial Cost to Company, Buildings and Improvements	16,287,332	[2]
Initial Cost to Company, Total	22,545,843	[2]
Cost Capitalized Subsequent to Acquisition	2,995,447	[2],[3]
Gross Carrying Amount, Land	6,958,371	[2]
Gross Carrying Amount, Buildings and Improvements	18,582,919	[2]
Gross Carrying Amount, Total	25,541,290	[1],[2]
Accumulated Depreciation	$ 2,312,634	[2]
Date of Construction	2015	[2]
Date Acquired	Feb. 1, 2017	[2]
Mavis | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 13,017,011	[2]
Initial Cost to Company, Land	4,657,233	[2]
Initial Cost to Company, Buildings and Improvements	14,493,508	[2]
Initial Cost to Company, Total	19,150,741	[2]
Cost Capitalized Subsequent to Acquisition	2,314,020	[2],[3]
Gross Carrying Amount, Land	5,178,028	[2]
Gross Carrying Amount, Buildings and Improvements	16,286,733	[2]
Gross Carrying Amount, Total	21,464,761	[1],[2]
Accumulated Depreciation	$ 2,014,225	[2]
Date of Construction	2013	[2]
Date Acquired	Feb. 1, 2017	[2]
Brewster | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,586,853	[2]
Initial Cost to Company, Land	4,136,329	[2]
Initial Cost to Company, Buildings and Improvements	9,527,410	[2]
Initial Cost to Company, Total	13,663,739	[2]
Cost Capitalized Subsequent to Acquisition	1,607,064	[2],[3]
Gross Carrying Amount, Land	4,598,876	[2]
Gross Carrying Amount, Buildings and Improvements	10,671,927	[2]
Gross Carrying Amount, Total	15,270,803	[1],[2]
Accumulated Depreciation	$ 1,339,009	[2]
Date of Construction	2013	[2]
Date Acquired	Feb. 1, 2017	[2]
Granite | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,332,600	[2]
Initial Cost to Company, Land	3,126,446	[2]
Initial Cost to Company, Buildings and Improvements	8,701,429	[2]
Initial Cost to Company, Total	11,827,875	[2]
Cost Capitalized Subsequent to Acquisition	1,443,554	[2],[3]
Gross Carrying Amount, Land	3,476,062	[2]
Gross Carrying Amount, Buildings and Improvements	9,795,367	[2]
Gross Carrying Amount, Total	13,271,429	[1],[2]
Accumulated Depreciation	$ 1,171,561	[2]
Date of Construction	1998/2016	[2]
Date Acquired	Feb. 1, 2017	[2]
Centennial | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,485,592	[2]
Initial Cost to Company, Land	1,714,644	[2]
Initial Cost to Company, Buildings and Improvements	11,428,538	[2]
Initial Cost to Company, Total	13,143,182	[2]
Cost Capitalized Subsequent to Acquisition	1,593,845	[2],[3]
Gross Carrying Amount, Land	1,906,384	[2]
Gross Carrying Amount, Buildings and Improvements	12,830,643	[2]
Gross Carrying Amount, Total	14,737,027	[1],[2]
Accumulated Depreciation	$ 1,512,894	[2]
Date of Construction	2016/2017	[2]
Date Acquired	Feb. 1, 2017	[2]
Ft Pierce | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,479,547
Initial Cost to Company, Land	1,152,931
Initial Cost to Company, Buildings and Improvements	12,398,306
Initial Cost to Company, Total	13,551,237
Cost Capitalized Subsequent to Acquisition	129,493
Gross Carrying Amount, Land	1,156,293
Gross Carrying Amount, Buildings and Improvements	12,524,437
Gross Carrying Amount, Total	13,680,730	[1]
Accumulated Depreciation	$ 749,851
Date of Construction	2008
Date Acquired	Jan. 24, 2019
Russell Blvd, Las Vegas II | Nevada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 13,002,835
Initial Cost to Company, Land	3,433,634
Initial Cost to Company, Buildings and Improvements	15,449,497
Initial Cost to Company, Total	18,883,131
Cost Capitalized Subsequent to Acquisition	132,138
Gross Carrying Amount, Land	3,438,279
Gross Carrying Amount, Buildings and Improvements	15,576,990
Gross Carrying Amount, Total	19,015,269	[1]
Accumulated Depreciation	$ 1,169,420
Date of Construction	1996
Date Acquired	Jan. 24, 2019
Jones Blvd, Las Vegas I | Nevada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,902,999
Initial Cost to Company, Land	1,975,283
Initial Cost to Company, Buildings and Improvements	12,565,410
Initial Cost to Company, Total	14,540,693
Cost Capitalized Subsequent to Acquisition	113,052
Gross Carrying Amount, Land	1,978,884
Gross Carrying Amount, Buildings and Improvements	12,674,861
Gross Carrying Amount, Total	14,653,745	[1]
Accumulated Depreciation	$ 757,400
Date of Construction	1999
Date Acquired	Jan. 24, 2019
Airport Rd, Colorado Springs | Colorado
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,664,395
Initial Cost to Company, Land	870,373
Initial Cost to Company, Buildings and Improvements	7,877,813
Initial Cost to Company, Total	8,748,186
Cost Capitalized Subsequent to Acquisition	220,490
Gross Carrying Amount, Land	872,523
Gross Carrying Amount, Buildings and Improvements	8,096,153
Gross Carrying Amount, Total	8,968,676	[1]
Accumulated Depreciation	$ 516,585
Date of Construction	1983
Date Acquired	Jan. 24, 2019
Riverside | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,461,036
Initial Cost to Company, Land	1,259,685
Initial Cost to Company, Buildings and Improvements	6,995,794
Initial Cost to Company, Total	8,255,479
Cost Capitalized Subsequent to Acquisition	253,593
Gross Carrying Amount, Land	1,261,734
Gross Carrying Amount, Buildings and Improvements	7,247,338
Gross Carrying Amount, Total	8,509,072	[1]
Accumulated Depreciation	$ 481,177
Date of Construction	1980
Date Acquired	Jan. 24, 2019
Stockton | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,653,407
Initial Cost to Company, Land	783,938
Initial Cost to Company, Buildings and Improvements	7,706,492
Initial Cost to Company, Total	8,490,430
Cost Capitalized Subsequent to Acquisition	69,715
Gross Carrying Amount, Land	786,045
Gross Carrying Amount, Buildings and Improvements	7,774,100
Gross Carrying Amount, Total	8,560,145	[1]
Accumulated Depreciation	$ 509,303
Date of Construction	1984
Date Acquired	Jan. 24, 2019
Azusa | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,530,028
Initial Cost to Company, Land	4,384,861
Initial Cost to Company, Buildings and Improvements	9,153,677
Initial Cost to Company, Total	13,538,538
Cost Capitalized Subsequent to Acquisition	202,371
Gross Carrying Amount, Land	4,388,187
Gross Carrying Amount, Buildings and Improvements	9,352,722
Gross Carrying Amount, Total	13,740,909	[1]
Accumulated Depreciation	$ 584,010
Date of Construction	1986
Date Acquired	Jan. 24, 2019
Romeoville | Illinois
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,836,240
Initial Cost to Company, Land	964,701
Initial Cost to Company, Buildings and Improvements	5,755,146
Initial Cost to Company, Total	6,719,847
Cost Capitalized Subsequent to Acquisition	183,355
Gross Carrying Amount, Land	966,367
Gross Carrying Amount, Buildings and Improvements	5,936,835
Gross Carrying Amount, Total	6,903,202	[1]
Accumulated Depreciation	$ 402,473
Date of Construction	1986
Date Acquired	Jan. 24, 2019
Elgin | Illinois
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,665,177
Initial Cost to Company, Land	1,162,197
Initial Cost to Company, Buildings and Improvements	2,895,052
Initial Cost to Company, Total	4,057,249
Cost Capitalized Subsequent to Acquisition	169,685
Gross Carrying Amount, Land	1,163,207
Gross Carrying Amount, Buildings and Improvements	3,063,727
Gross Carrying Amount, Total	4,226,934	[1]
Accumulated Depreciation	$ 258,475
Date of Construction	1986
Date Acquired	Jan. 24, 2019
San Antonio I | Texas | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,126,214
Initial Cost to Company, Land	1,602,740
Initial Cost to Company, Buildings and Improvements	9,196,093
Initial Cost to Company, Total	10,798,833
Cost Capitalized Subsequent to Acquisition	184,566
Gross Carrying Amount, Land	1,605,415
Gross Carrying Amount, Buildings and Improvements	9,377,984
Gross Carrying Amount, Total	10,983,399	[1]
Accumulated Depreciation	$ 592,176
Date of Construction	1998
Date Acquired	Jan. 24, 2019
Kingwood | Texas
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,299,510
Initial Cost to Company, Land	1,016,291
Initial Cost to Company, Buildings and Improvements	9,358,519
Initial Cost to Company, Total	10,374,810
Cost Capitalized Subsequent to Acquisition	174,887
Gross Carrying Amount, Land	1,018,822
Gross Carrying Amount, Buildings and Improvements	9,530,875
Gross Carrying Amount, Total	10,549,697	[1]
Accumulated Depreciation	$ 630,274
Date of Construction	2001
Date Acquired	Jan. 24, 2019
Aurora | Colorado
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,942,344
Initial Cost to Company, Land	1,678,141
Initial Cost to Company, Buildings and Improvements	5,958,219
Initial Cost to Company, Total	7,636,360
Cost Capitalized Subsequent to Acquisition	76,540
Gross Carrying Amount, Land	1,680,019
Gross Carrying Amount, Buildings and Improvements	6,032,881
Gross Carrying Amount, Total	7,712,900	[1]
Accumulated Depreciation	$ 505,106
Date of Construction	2015
Date Acquired	Jan. 24, 2019
San Antonio II | Texas | Property Two
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 3,109,187
Initial Cost to Company, Buildings and Improvements	8,579,806
Initial Cost to Company, Total	$ 11,688,993
Date of Construction	2004
Date Acquired	Jan. 24, 2019
Stoney Creek I | ONTARIO | Property One
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,712,058
Initial Cost to Company, Land	2,363,127
Initial Cost to Company, Buildings and Improvements	8,154,202
Initial Cost to Company, Total	10,517,329
Cost Capitalized Subsequent to Acquisition	603,571
Gross Carrying Amount, Land	2,475,762
Gross Carrying Amount, Buildings and Improvements	8,645,138
Gross Carrying Amount, Total	11,120,900	[1]
Accumulated Depreciation	$ 566,990
Date of Construction	N/A
Date Acquired	Jan. 24, 2019
Torbarrie | ONTARIO
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,423,863
Initial Cost to Company, Land	2,714,051
Initial Cost to Company, Total	2,714,051
Gross Carrying Amount, Land	2,843,412
Gross Carrying Amount, Buildings and Improvements	14,061,994
Gross Carrying Amount, Total	16,905,406	[1]
Accumulated Depreciation	$ 428,890
Date of Construction	1980
Date Acquired	Jan. 24, 2019
Baseline | Arizona
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,882,318
Initial Cost to Company, Land	1,307,289
Initial Cost to Company, Buildings and Improvements	11,385,380
Initial Cost to Company, Total	12,692,669
Gross Carrying Amount, Land	1,310,430
Gross Carrying Amount, Buildings and Improvements	11,605,833
Gross Carrying Amount, Total	12,916,263	[1]
Accumulated Depreciation	$ 753,252
Date of Construction	2016
Date Acquired	Jan. 24, 2019
3173 Sweeten Creek Rd, Asheville | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,636,033
Initial Cost to Company, Land	1,036,164
Initial Cost to Company, Buildings and Improvements	8,764,558
Initial Cost to Company, Total	9,800,722
Cost Capitalized Subsequent to Acquisition	1,238,977
Gross Carrying Amount, Land	1,038,538
Gross Carrying Amount, Buildings and Improvements	10,001,161
Gross Carrying Amount, Total	11,039,699	[1]
Accumulated Depreciation	$ 585,196
Date of Construction	1982
Date Acquired	Jan. 24, 2019
Elk Grove | Illinois
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,670,067
Initial Cost to Company, Land	2,384,166
Initial Cost to Company, Buildings and Improvements	6,000,071
Initial Cost to Company, Total	8,384,237
Cost Capitalized Subsequent to Acquisition	164,242
Gross Carrying Amount, Land	2,386,241
Gross Carrying Amount, Buildings and Improvements	6,162,238
Gross Carrying Amount, Total	8,548,479	[1]
Accumulated Depreciation	$ 400,769
Date of Construction	2016
Date Acquired	Jan. 24, 2019
Garden Grove | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,885,408
Initial Cost to Company, Land	8,076,202
Initial Cost to Company, Buildings and Improvements	13,152,494
Initial Cost to Company, Total	21,228,696
Cost Capitalized Subsequent to Acquisition	134,269
Gross Carrying Amount, Land	8,081,469
Gross Carrying Amount, Buildings and Improvements	13,281,496
Gross Carrying Amount, Total	21,362,965	[1]
Accumulated Depreciation	$ 846,688
Date of Construction	2017
Date Acquired	Jan. 24, 2019
Deaverview Rd, Asheville | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 2,830,546
Initial Cost to Company, Land	1,449,001
Initial Cost to Company, Buildings and Improvements	4,412,039
Initial Cost to Company, Total	5,861,040
Cost Capitalized Subsequent to Acquisition	207,943
Gross Carrying Amount, Land	1,450,457
Gross Carrying Amount, Buildings and Improvements	4,618,526
Gross Carrying Amount, Total	6,068,983	[1]
Accumulated Depreciation	$ 324,157
Date of Construction	1992
Date Acquired	Jan. 24, 2019
Highland Center Blvd, Asheville | North Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,267,324
Initial Cost to Company, Land	1,763,875
Initial Cost to Company, Buildings and Improvements	4,823,116
Initial Cost to Company, Total	6,586,991
Cost Capitalized Subsequent to Acquisition	99,121
Gross Carrying Amount, Land	1,765,497
Gross Carrying Amount, Buildings and Improvements	4,920,615
Gross Carrying Amount, Total	6,686,112	[1]
Accumulated Depreciation	$ 332,058
Date of Construction	1994
Date Acquired	Jan. 24, 2019
Sarasota | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,687,085
Initial Cost to Company, Land	1,084,165
Initial Cost to Company, Buildings and Improvements	7,359,913
Initial Cost to Company, Total	8,444,078
Cost Capitalized Subsequent to Acquisition	86,558
Gross Carrying Amount, Land	1,086,243
Gross Carrying Amount, Buildings and Improvements	7,444,393
Gross Carrying Amount, Total	8,530,636	[1]
Accumulated Depreciation	$ 446,430
Date of Construction	2017
Date Acquired	Jan. 24, 2019
Mount Pleasant | South Carolina
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 3,528,256
Initial Cost to Company, Land	1,054,553
Initial Cost to Company, Buildings and Improvements	5,678,794
Initial Cost to Company, Total	6,733,347
Cost Capitalized Subsequent to Acquisition	148,802
Gross Carrying Amount, Land	1,056,257
Gross Carrying Amount, Buildings and Improvements	5,825,892
Gross Carrying Amount, Total	6,882,149	[1]
Accumulated Depreciation	$ 348,794
Date of Construction	2016
Date Acquired	Jan. 24, 2019
Nantucket | Massachusetts
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 25,198,238
Initial Cost to Company, Land	5,854,837
Initial Cost to Company, Buildings and Improvements	33,210,517
Initial Cost to Company, Total	39,065,354
Cost Capitalized Subsequent to Acquisition	159,319
Gross Carrying Amount, Land	5,864,568
Gross Carrying Amount, Buildings and Improvements	33,360,105
Gross Carrying Amount, Total	39,224,673	[1]
Accumulated Depreciation	$ 1,960,699
Date of Construction	2002
Date Acquired	Jan. 24, 2019
Pembroke Pines | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 8,559,709
Initial Cost to Company, Land	3,146,970
Initial Cost to Company, Buildings and Improvements	14,296,167
Initial Cost to Company, Total	17,443,137
Cost Capitalized Subsequent to Acquisition	70,708
Gross Carrying Amount, Land	3,151,227
Gross Carrying Amount, Buildings and Improvements	14,362,618
Gross Carrying Amount, Total	17,513,845	[1]
Accumulated Depreciation	$ 892,843
Date of Construction	2018
Date Acquired	Jan. 24, 2019
Riverview | Riverview, Florida
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,674,089
Initial Cost to Company, Land	1,593,082
Initial Cost to Company, Buildings and Improvements	7,102,271
Initial Cost to Company, Total	8,695,353
Cost Capitalized Subsequent to Acquisition	918,900
Gross Carrying Amount, Land	2,408,153
Gross Carrying Amount, Buildings and Improvements	7,206,100
Gross Carrying Amount, Total	9,614,253	[1]
Accumulated Depreciation	$ 474,508
Date of Construction	2018
Date Acquired	Jan. 24, 2019
Eastlake | Canada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,193,371
Initial Cost to Company, Land	2,120,104
Initial Cost to Company, Buildings and Improvements	15,417,746
Initial Cost to Company, Total	17,537,850
Cost Capitalized Subsequent to Acquisition	56,350
Gross Carrying Amount, Land	2,124,462
Gross Carrying Amount, Buildings and Improvements	15,469,738
Gross Carrying Amount, Total	17,594,200	[1]
Accumulated Depreciation	$ 891,288
Date of Construction	2018
Date Acquired	Jan. 24, 2019
McKinney | Texas
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,990,094
Initial Cost to Company, Land	2,177,186
Initial Cost to Company, Buildings and Improvements	9,320,876
Initial Cost to Company, Total	11,498,062
Cost Capitalized Subsequent to Acquisition	134,923
Gross Carrying Amount, Land	2,179,999
Gross Carrying Amount, Buildings and Improvements	9,452,986
Gross Carrying Amount, Total	11,632,985	[1]
Accumulated Depreciation	$ 573,274
Date of Construction	2016
Date Acquired	Jan. 24, 2019
Hualapai Way, Las Vegas | Nevada
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,428,523
Initial Cost to Company, Land	742,839
Initial Cost to Company, Buildings and Improvements	9,018,717
Initial Cost to Company, Total	9,761,556
Cost Capitalized Subsequent to Acquisition	54,149
Gross Carrying Amount, Land	745,225
Gross Carrying Amount, Buildings and Improvements	9,070,480
Gross Carrying Amount, Total	9,815,705	[1]
Accumulated Depreciation	$ 550,290
Date of Construction	2018
Date Acquired	Jan. 24, 2019
Gilbert | Arizona
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 5,672,438
Initial Cost to Company, Land	1,379,687
Initial Cost to Company, Buildings and Improvements	9,021,255
Initial Cost to Company, Total	10,400,942
Cost Capitalized Subsequent to Acquisition	457,349
Gross Carrying Amount, Land	1,037,750
Gross Carrying Amount, Buildings and Improvements	9,820,541
Gross Carrying Amount, Total	10,858,291	[1]
Accumulated Depreciation	$ 457,210
Date of Construction	2019
Date Acquired	Jul. 11, 2019
Corporate Office | California
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 4,099,152
Initial Cost to Company, Land	975,000
Initial Cost to Company, Buildings and Improvements	5,525,000
Initial Cost to Company, Total	6,500,000
Gross Carrying Amount, Land	975,000
Gross Carrying Amount, Buildings and Improvements	5,555,585
Gross Carrying Amount, Total	6,530,585	[1]
Accumulated Depreciation	$ 223,735
Date of Construction	2018
Date Acquired	Jan. 24, 2019
[1]	The aggregate cost of real estate for United States federal income tax purposes is approximately $1,246,517,589.
[2]	This property is located in Ontario, Canada.
[3]	The change in cost at these self storage facilities are the net of the impact of foreign exchange rate changes and any actual additions.

Schedule III Real Estate Asse_2

Schedule III Real Estate Asset and Accumulated Depreciation (Parenthetical) (Detail)	Dec. 31, 2020USD ($)
United States
Real Estate And Accumulated Depreciation [Line Items]
Aggregate cost of real estate for federal income tax purposes	$ 1,246,517,589

Schedule III Summary of Activit

Schedule III Summary of Activity in Real Estate Facilities (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Real estate facilities
Real estate facilities, Balance at beginning of year	$ 1,173,825,368
Impact of foreign exchange rate changes	4,147,798	$ 6,582,603
Improvements, additions and other	32,129,416
Real estate facilities, Balance at end of year	1,210,102,582	1,173,825,368
Accumulated depreciation
Accumulated depreciation, beginning balance	(83,692,491)	(54,264,685)
Depreciation expense	(31,711,102)	(29,188,668)
Impact of foreign exchange rate changes	(499,452)	(441,554)
Accumulated depreciation, ending balance	(115,903,045)	(83,692,491)
Construction in process
Construction in process, Balance at beginning of year	12,237,722
Net additions and assets placed into service	(10,476,419)
Construction in process, Balance at end of year	1,761,303	12,237,722
Real estate facilities, net	$ 1,095,960,840	$ 1,102,370,599