NorthStar/RXR New York Metro Real Estate 10-Q 13 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 09, 2017
Class of Stock [Line Items]
Entity Registrant Name	NorthStar/RXR New York Metro Real Estate, Inc.
Entity Central Index Key	1,603,671
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Amendment Flag	false
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Class A
Class of Stock [Line Items]
Entity common stock		1,951,436
Class T
Class of Stock [Line Items]
Entity common stock		2,092,493
Class I
Class of Stock [Line Items]
Entity common stock		121,402

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)		9 Months Ended
		Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents		$ 4,522,222	$ 4,595,392
Investment in unconsolidated venture, at fair value		5,533,264	5,173,075
Real estate debt investments, net		34,811,111	0
Interest receivable		226,442	0
Receivables, net		416,939	876,676
Total assets	[1]	45,509,978	10,645,143
Liabilities
Due to related party		229,028	228,830
Distribution payable		17,145	4,677
Accounts payable and accrued expenses		195	0
Total liabilities	[1]	246,368	233,507
NorthStar/RXR New York Metro Real Estate, Inc. Stockholders’ Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized, no shares issued and outstanding as of September 30, 2017 and December 31, 2016		0	0
Additional paid-in capital		30,715,569	9,937,027
Retained earnings		991,266	462,308
Total NorthStar/RXR New York Metro Real Estate, Inc. stockholders’ equity		31,744,557	10,410,690
Non-controlling interests		13,519,053	946
Total equity		45,263,610	10,411,636
Total liabilities and equity		$ 45,509,978	10,645,143
Primary Beneficiary
NorthStar/RXR New York Metro Real Estate, Inc. Stockholders’ Equity
VIE ownership interest		99.99%
Class A common
NorthStar/RXR New York Metro Real Estate, Inc. Stockholders’ Equity
Common stock		$ 18,150	7,657
Class T common
NorthStar/RXR New York Metro Real Estate, Inc. Stockholders’ Equity
Common stock		18,563	2,963
Class I Common
NorthStar/RXR New York Metro Real Estate, Inc. Stockholders’ Equity
Common stock		$ 1,009	$ 735
[1]	Represents the consolidated assets and liabilities of NorthStar/RXR Operating Partnership, LP (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which the Company is the sole general partner and owns approximately 99.99%. As of September 30, 2017, the Operating Partnership includes $34.8 million of assets of certain VIEs that are consolidated by the Operating Partnership. Refer to Note 2, “Summary of Significant Accounting Policies.”

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	50,000,000	50,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (shares)	400,000,000
Class A common
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	120,000,000	120,000,000
Common stock, shares issued (shares)	1,815,070	765,723
Common stock, shares outstanding (shares)	1,815,070	765,723
Class T common
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	240,000,000	240,000,000
Common stock, shares issued (shares)	1,856,300	296,314
Common stock, shares outstanding (shares)	1,856,300	296,314
Class I
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	40,000,000	40,000,000
Common stock, shares issued (shares)	100,976	73,524
Common stock, shares outstanding (shares)	100,976	73,524

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
Revenues
Interest income	$ 776,291		$ 0		$ 1,015,787		$ 0
Other income	14,901		0		42,636		0
Total revenues	791,192		0		1,058,423		0
Expenses
General and administrative expenses	108,089		39,771		263,511		59,901
Asset management and other fees - related party	71,327		15,292		144,084		132,460
Transaction costs	24,514		0		130,134		0
Total expenses	203,930		55,063		537,729		192,361
Income (loss) before equity in earnings (losses) of unconsolidated venture	587,262		(55,063)		520,694		(192,361)
Equity in earnings (losses) of unconsolidated venture	45,136		15,029		494,963		11,408
Net income (loss)	632,398		(40,034)		1,015,657		(180,953)
Net (income) loss attributable to non-controlling interests	(287,182)		0		(369,619)		53
Net income (loss) attributable to NorthStar/RXR New York Metro Real Estate, Inc. common stockholders	$ 345,216		$ (40,034)		$ 646,038		$ (180,900)
Net income (loss) per share, basic/diluted (in dollars per share)	$ 0.10	[1]	$ (0.09)	[2]	$ 0.26	[1]	$ (0.53)	[2]
Weighted average number of shares outstanding, basic/diluted (shares)	3,486,983	[1]	438,877	[2]	2,510,091	[1]	339,853	[2]
Dividends declared per share of common stock (in dollars per share)	$ 0.03	[1]	$ 0.02	[2]	$ 0.07	[1]	$ 0.03	[2]
[1]	Per share amounts for three months and nine months ended September 30, 2016 adjusted to reflect the retroactive impact of the stock distributions issued in January 2017 and May 2017. Refer to Note 7, “Stockholders’ Equity.”
[2]	Represents the consolidated assets and liabilities of NorthStar/RXR Operating Partnership, LP (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which the Company is the sole general partner and owns approximately 99.99%. As of September 30, 2017, the Operating Partnership includes $34.8 million of assets of certain VIEs that are consolidated by the Operating Partnership. Refer to Note 2, “Summary of Significant Accounting Policies.”

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($)	Total	Class A	Class T	Class I	Total Company’s Stockholders’ Equity	Common StockClass A	Common StockClass T	Common StockClass I	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Non-controlling Interests
Beginning Balance (in shares) at Dec. 31, 2015						242,003	0	0
Beginning Balance at Dec. 31, 2015	$ 2,181,007				$ 2,180,008	$ 2,420	$ 0	$ 0	$ 2,178,587	$ (999)	$ 999
Increase (Decrease) in Stockholder's Equity
Net proceeds from issuance of common stock (in shares)		501,000	296,000	74,000		500,903	296,308	73,524
Net proceeds from issuance of common stock	7,697,289	$ 5,007,000	$ 2,831,000	$ 669,000	7,697,289	$ 5,009	$ 2,963	$ 735	7,688,582
Issuance and amortization of equity-based compensation (in shares)						22,500
Issuance and amortization of equity-based compensation	66,354				66,354	$ 225			66,129
Stock distributions declared	0				0				568	(568)
Distributions declared	(23,927)				(23,927)					(23,927)
Proceeds from distribution reinvestment plan (in shares)						317	6
Proceeds from distribution reinvestment plan	3,164				3,164	$ 3	$ 0		3,161
Net income (loss)	487,749				487,802					487,802	(53)
Ending Balance (in shares) at Dec. 31, 2016		765,723	296,314	73,524		765,723	296,314	73,524
Ending Balance at Dec. 31, 2016	10,411,636				10,410,690	$ 7,657	$ 2,963	$ 735	9,937,027	462,308	946
Increase (Decrease) in Stockholder's Equity
Net proceeds from issuance of common stock (in shares)		867,000	1,414,000	15,000		866,533	1,413,808	14,945
Net proceeds from issuance of common stock	20,663,827	$ 8,679,000	$ 13,507,000	$ 136,000	20,663,827	$ 8,665	$ 14,138	$ 149	20,640,875
Issuance and amortization of equity-based compensation (in shares)						7,500
Issuance and amortization of equity-based compensation	95,160				95,160	$ 75			95,085
Stock distributions declared (in shares)						171,634	145,568	12,348
Stock distributions declared	0				0	$ 1,716	$ 1,456	$ 124	(568)	(2,728)
Non-controlling interests - contributions	13,513,107										13,513,107
Non-controlling interests - distributions	(364,619)										(364,619)
Distributions declared	(114,352)				(114,352)					(114,352)
Proceeds from distribution reinvestment plan (in shares)						3,680	610	159
Proceeds from distribution reinvestment plan	43,194				43,194	$ 37	$ 6	$ 1	43,150
Net income (loss)	1,015,657				646,038					646,038	369,619
Ending Balance (in shares) at Sep. 30, 2017		1,815,070	1,856,300	100,976		1,815,070	1,856,300	100,976
Ending Balance at Sep. 30, 2017	$ 45,263,610				$ 31,744,557	$ 18,150	$ 18,563	$ 1,009	$ 30,715,569	$ 991,266	$ 13,519,053

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 1,015,657	$ (180,953)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of origination fee on real estate debt investment	(11,111)	0
Amortization of equity-based compensation	95,160	37,917
Equity in (earnings) losses of unconsolidated venture	(494,963)	(11,408)
Dividends from unconsolidated venture	134,774	7,154
Changes in assets and liabilities:
Interest Receivable	(226,442)	0
Due to related party	20,509	22
Accounts payable and accrued expenses	195	0
Net cash provided by (used in) operating activities	533,779	(147,268)
Cash flows from investing activities:
Investments in real estate debt	(29,800,000)	0
Investment in unconsolidated ventures	0	(1,900,000)
Net cash provided by (used in) investing activities	(29,800,000)	(1,900,000)
Cash flows from financing activities:
Net proceeds from issuance of common stock	21,082,401	1,810,757
Net proceeds from issuance of common stock, related party	20,853	1,037
Distributions paid on common stock	(101,885)	(8,785)
Proceeds from distribution reinvestment plan	43,194	518
Contributions from non-controlling interests	8,513,107	0
Distributions to non-controlling interests	(364,619)	0
Net cash provided by (used in) financing activities	29,193,051	1,803,527
Net increase (decrease) in cash and cash equivalents	(73,170)	(243,741)
Cash and cash equivalents - beginning of period	4,595,392	2,201,007
Cash and cash equivalents - end of period	4,522,222	1,957,266
Supplemental disclosure of non-cash investing and financing activities:
Accrual of cost of capital (refer to Note 5)	49,527	26,485
Subscriptions receivable, gross	446,000	55,000
Accrual of distribution payable	17,145	3,252
Contributions from non-controlling interests	$ 5,000,000	$ 0

Business and Organization

Business and Organization	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Organization	Business and Organization NorthStar/RXR New York Metro Real Estate, Inc. (the “Company”) was formed to acquire a high-quality commercial real estate (“CRE”) portfolio concentrated in the New York metropolitan area, and in particular New York City, with a focus on office, mixed-use properties and a lesser emphasis on multifamily properties. The Company intends to complement this strategy by originating and acquiring: (i) CRE debt, including subordinate loans and participations in such loans and preferred equity interests; and (ii) joint ventures and partnership interests in CRE related investments. The Company was formed on March 21, 2014 as a Maryland corporation and elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), commencing with the taxable year ending December 31, 2016 . The Company is externally managed and has no employees. Prior to January 11, 2017, the Company was managed by an affiliate of NorthStar Asset Management Group Inc. (NYSE: NSAM) (“NSAM”). Effective January 10, 2017, NSAM completed its previously announced merger with Colony Capital, Inc. (“Colony”), NorthStar Realty Finance Corp. (“NorthStar Realty”), and Colony NorthStar, Inc. (“Colony NorthStar”), a wholly-owned subsidiary of NSAM, which the Company refers to as the mergers, with Colony NorthStar surviving the mergers and succeeding NSAM as one of the Company’s co-sponsors. As a result of the mergers, Colony NorthStar became an internally-managed equity REIT, with a diversified real estate and investment management platform and is publicly-traded on the NYSE under the ticker symbol “CLNS.” CNI NS/RXR Advisors, LLC, as successor to NSAM J-NS/RXR Ltd (the “Advisor”), is now a subsidiary of Colony NorthStar. The Advisor manages the Company’s day-to-day operations pursuant to an advisory agreement. The mergers had no material impact on the Company’s operations. Colony NorthStar manages capital on behalf of its stockholders, as well as institutional and retail investors in private funds, non-traded and traded REITs and registered investment companies. The Company is sub-advised by RXR NTR Sub-Advisor LLC (“Sub-advisor”), a Delaware limited liability company and a subsidiary of the Company’s other co-sponsor, RXR Realty LLC (“RXR”). The Company’s Advisor and Sub-advisor are collectively referred to as the Advisor Entities. The Company, its Advisor and its Sub-advisor entered into a sub-advisory agreement delegating certain investment responsibilities of the Advisor to the Sub-advisor. Colony NorthStar and RXR are each referred to as a Co-sponsor and collectively as the Co-sponsors. Substantially all business of the Company is conducted through NorthStar/RXR Operating Partnership, LP (the “Operating Partnership”). The Company is the sole general partner and a limited partner of the Operating Partnership. NorthStar/RXR NTR OP Holdings LLC (the “Special Unit Holder”) (a joint venture between Colony NorthStar and RXR) has invested $1,000 in the Operating Partnership and has been issued a separate class of limited partnership units (the “Special Units”), which is recorded as non-controlling interest on the consolidated balance sheets. As the Company accepts subscriptions for shares, it transfers substantially all of the net proceeds from the continuous, public offering to the Operating Partnership as a capital contribution. The Company’s charter authorizes the issuance of up to 400,000,000 shares of common stock with a par value of $0.01 per share and up to 50,000,000 shares of preferred stock with a par value of $0.01 per share. Of the total shares of common stock authorized, 120,000,000 are classified as Class A shares (“Class A Shares”), 240,000,000 are classified as Class T shares (“Class T Shares”), and 40,000,000 are classified as Class I shares (“Class I Shares”). The board of directors of the Company is authorized to amend its charter, without the approval of the stockholders, to increase or decrease the aggregate number of shares of capital stock or the number of shares of any class or series that the Company has authority to issue or to classify and reclassify any unissued shares of common stock into one or more classes or series. On March 28, 2014, as part of its formation, the Company issued 16,667 shares of common stock to NorthStar Realty, which is now a subsidiary of Colony NorthStar, and 5,556 shares of common stock to a subsidiary of RXR for $0.2 million , all of which were subsequently renamed Class A Shares. On February 9, 2015 , the Company’s registration statement on Form S-11 with the U.S. Securities and Exchange Commission (the “SEC”) was declared effective to offer a minimum of $2.0 million and a maximum of $2.0 billion in shares of common stock in a continuous, public offering, of which up to $1.8 billion can be offered pursuant to its primary offering (the “Primary Offering”) at a purchase price of $10.1111 per Class A Share and $9.5538 per Class T Share and up to $200.0 million pursuant to its distribution reinvestment plan (the “DRP”) at a purchase price of $9.81 per Class A Share and $9.27 per Class T Share. On December 23, 2015 , the Company commenced operations by satisfying the minimum offering requirement in the Primary Offering as a result of NorthStar Realty and RXR purchasing $1.5 million and $0.5 million in Class A Shares, respectively. On August 22, 2016, the Company filed a post-effective amendment to its registration statement that reclassified its common stock offered pursuant to its registration statement into Class A Shares, Class T Shares and Class I Shares. The SEC declared the post-effective amendment effective on October 26, 2016. Pursuant to the registration statement, as amended, the Company is offering for sale up to $1.8 billion in shares of common stock at a price of $10.1111 per Class A Share, $9.5538 per Class T Share and $9.10 per Class I Share in the Primary Offering, and up to $200.0 million in shares under the DRP at a price of $9.81 per Class A Share, $9.27 per Class T Share and $9.10 per Class I Share. The Primary Offering and the DRP are herein collectively referred to as the Offering. The Company retained NorthStar Securities, LLC (“NorthStar Securities”), an affiliate of its Advisor and one of its co-sponsors, to serve as the dealer manager (the “Dealer Manager”) for the Primary Offering. The Dealer Manager is also responsible for marketing the shares being offered pursuant to the Primary Offering. The board of directors of the Company has the right to reallocate shares between the Primary Offering and the DRP. In November 2016 , the Company’s board of directors approved an extension of the Offering by one year to February 9, 2018. The Company’s board has the right to further extend or terminate the Offering at any time, as permitted by applicable law and regulation. From inception through November 9, 2017 , the Company raised total gross proceeds of $36.7 million pursuant to the Offering, including gross proceeds of $96,236 pursuant to the DRP.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Quarterly Presentation The accompanying unaudited consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, certain information and note disclosures normally included in the consolidated financial statements prepared under U.S. GAAP have been condensed or omitted. In the opinion of management, all adjustments considered necessary for a fair presentation of the Company’s financial position, results of operations and cash flows have been included and are of a normal and recurring nature. The operating results presented for interim periods are not necessarily indicative of the results that may be expected for any other interim period or for the entire year. These consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 , which was filed with the SEC on March 21, 2017. Principles of Consolidation The consolidated financial statements include the accounts of the Company, the Operating Partnership and their consolidated subsidiaries. The Company consolidates variable interest entities (“VIEs”), if any, where the Company is the primary beneficiary and voting interest entities which are generally majority owned or otherwise controlled by the Company. All significant intercompany balances are eliminated in consolidation. Variable Interest Entities A VIE is an entity that lacks one or more of the characteristics of a voting interest entity. A VIE is defined as an entity in which equity investors do not have the characteristics of a controlling financial interest or do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. The determination of whether an entity is a VIE includes both a qualitative and quantitative analysis. The Company bases its qualitative analysis on its review of the design of the entity, its organizational structure including decision-making ability and relevant financial agreements and the quantitative analysis on the forecasted cash flow of the entity. The Company reassesses its initial evaluation of an entity as a VIE upon the occurrence of certain reconsideration events. A VIE must be consolidated only by its primary beneficiary, which is defined as the party who, along with its affiliates and agents has both the: (i) power to direct the activities that most significantly impact the VIE’s economic performance; and (ii) obligation to absorb losses of the VIE or the right to receive benefits from the VIE, which could be significant to the VIE. The Company determines whether it is the primary beneficiary of a VIE by considering qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of its investment; the obligation or likelihood for the Company or other interests to provide financial support; consideration of the VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders and the similarity with and significance to the business activities of the Company and the other interests. The Company reassesses its determination of whether it is the primary beneficiary of a VIE each reporting period. Significant judgments related to these determinations include estimates about the current and future fair value and performance of investments held by these VIEs and general market conditions. The Company evaluates its investments, including investments in unconsolidated ventures, if any, to determine whether each investment is a VIE. The Company analyzes new investments, as well as reconsideration events for existing investments, which vary depending on type of investment. The most significant consolidated VIE is the Operating Partnership, which is a VIE because the non-controlling interests do not have substantive kick-out or participating rights. The Company consolidates this entity because it controls all significant business activities. The Operating Partnership consolidates certain VIEs that have non-controlling interests. Included in real estate debt investment on the Company’s consolidated balance sheets as of September 30, 2017 is $34.8 million related to such consolidated VIEs. The Company consolidates these entities because it determined it is the primary beneficiary. As of September 30, 2017 , the Company identified unconsolidated VIEs related to its investment in an unconsolidated venture. Based on management’s analysis, the Company determined that it is not the primary beneficiary. Accordingly, the VIEs are not consolidated in the Company’s financial statements as of September 30, 2017 . The Company did not provide financial support to the unconsolidated VIEs during the nine months ended September 30, 2017 . As of September 30, 2017 , there were no explicit arrangements or implicit variable interests that could require the Company to provide financial support to its unconsolidated VIEs. The Company’s maximum exposure to loss as of September 30, 2017 would not exceed its investment in the VIEs. Creditors of each of the VIEs have no recourse to the general credit of the Company. Voting Interest Entities A voting interest entity is an entity in which the total equity investment at risk is sufficient to enable it to finance its activities independently and the equity holders have the power to direct the activities of the entity that most significantly impact its economic performance, the obligation to absorb the losses of the entity and the right to receive the residual returns of the entity. The usual condition for a controlling financial interest in a voting interest entity is ownership of a majority voting interest. If the Company has a majority voting interest in a voting interest entity, the entity will generally be consolidated. The Company does not consolidate a voting interest entity if there are substantive participating rights by other parties and/or kick-out rights by a single party or a simple majority vote. The Company performs on-going reassessments of whether entities previously evaluated under the voting interest framework have become VIEs, based on certain events, and therefore subject to the VIE consolidation framework. Investments in Unconsolidated Ventures A non-controlling, unconsolidated ownership interest in an entity may be accounted for using the equity method or cost method, and for either method, the Company may elect the fair value option. The Company will account for an investment in an unconsolidated entity that does not qualify for equity method accounting using the cost method if the Company determines that it does not have significant influence. Under the cost method, equity in earnings is recorded as dividends are received to the extent they are not considered a return of capital, which is recorded as a reduction of cost of the investment. Under the equity method, the investment is adjusted each period for capital contributions and distributions and its share of the entity’s net income (loss). Capital contributions, distributions and net income (loss) of such entities are recorded in accordance with the terms of the governing documents. An allocation of net income (loss) may differ from the stated ownership percentage interest in such entity as a result of preferred returns and allocation formulas, if any, as described in such governing documents. Equity method investments are recognized using a cost accumulation model in which the investment is recognized based on the cost to the investor, which includes acquisition fees. The Company records as an expense certain acquisition costs and fees associated with consolidated investments deemed to be business combinations and capitalizes these costs for investments deemed to be acquisitions of an asset, including an equity method investment. The Company may account for an investment in an unconsolidated entity using either the equity or cost methods, but may choose to record the investment at fair value by electing the fair value option. The Company elected the fair value option for its investment in an unconsolidated venture and records the corresponding results from operations, which includes dividends received and its share of the change in fair value of the underlying investment, as equity in earnings (losses) of unconsolidated venture on the consolidated statements of operations. The Company measures fair value using the net asset value (“NAV”) of the underlying investment as a practical expedient as permitted by the guidance on fair value measurement. Dividends received in excess of cumulative equity in earnings from the unconsolidated venture will be deemed as a return of capital. Non-controlling Interests A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to the Company. A non-controlling interest is required to be presented as a separate component of equity on the consolidated balance sheets and presented separately as net income (loss) attributable to controlling and non-controlling interests. An allocation to a non-controlling interest may differ from the stated ownership percentage interest in such entity as a result of a preferred return and allocation formula, if any, as described in such governing documents. Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that could affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates and assumptions. Fair Value Option The fair value option provides an election that allows a company to irrevocably elect to record certain financial assets and liabilities at fair value on an instrument-by-instrument basis at initial recognition. Any change in fair value for assets and liabilities for which the election is made is recognized in earnings. The Company has elected the fair value option for its investment in an unconsolidated venture. Cash and Cash Equivalents The Company considers all highly-liquid investments with an original maturity date of three months or less to be cash equivalents. Cash, including amounts restricted, may at times exceed the Federal Deposit Insurance Corporation deposit insurance limit of $250,000 per institution. The Company mitigates credit risk by placing cash and cash equivalents with major financial institutions. To date, the Company has not experienced any losses on cash and cash equivalents. Real Estate Debt Investments CRE debt investments are generally intended to be held to maturity and, accordingly, are carried at cost, net of unamortized loan fees, premium and discount. CRE debt investments that are deemed to be impaired are carried at amortized cost less a reserve, if deemed appropriate, which would approximate fair value. CRE debt investments where the Company does not have the intent to hold the loan for the foreseeable future or until its expected payoff are classified as held for sale and recorded at the lower of cost or estimated fair value. Acquisition Expenses The total of all acquisition expenses for an investment cannot exceed, in the aggregate, 6.0% of the contract purchase price of such investment unless such excess is approved by a majority of the directors, including independent directors. From inception through September 30, 2017 , total acquisition expenses did not exceed the allowed limit for any investment. The Company records as an expense certain acquisition costs associated with transactions deemed to be business combinations in which it consolidates the asset and capitalizes these costs for transactions deemed to be acquisitions of an asset, including an equity investment. Revenue Recognition Real Estate Debt Investments Interest income is recognized on an accrual basis and any related premium, discount, origination costs and fees are amortized over the life of the investment using the effective interest method. The amortization is reflected as an adjustment to interest income in the consolidated statements of operations. The amortization of a premium or accretion of a discount is discontinued if such investment is reclassified to held for sale. Credit Losses and Impairment on Investments Real Estate Debt Investments CRE debt investments are considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all principal and interest amounts due according to the contractual terms. The Company assesses the credit quality of the portfolio and adequacy of reserves on a quarterly basis or more frequently as necessary. Significant judgment of the Company is required in this analysis. The Company considers the estimated net recoverable value of the investment as well as other factors, including but not limited to the fair value of any collateral, the amount and the status of any senior debt, the quality and financial condition of the borrower and the competitive situation of the area where the underlying collateral is located. Because this determination is based on projections of future economic events, which are inherently subjective, the amount ultimately realized may differ materially from the carrying value as of the balance sheet date. If upon completion of the assessment, the estimated fair value of the underlying collateral is less than the net carrying value of the investment, a reserve is recorded with a corresponding charge to a credit provision. The reserve is maintained at a level that is determined to be adequate by management to absorb probable losses. Income recognition is suspended for an investment at the earlier of the date at which payments become 90-days past due or when, in the opinion of the Company, a full recovery of income and principal becomes doubtful. When the ultimate collectability of the principal of an impaired investment is in doubt, all payments are applied to principal under the cost recovery method. When the ultimate collectability of the principal of an impaired investment is not in doubt, contractual interest is recorded as interest income when received, under the cash basis method until an accrual is resumed when the investment becomes contractually current and performance is demonstrated to be resumed. Interest accrued and not collected will be reversed against interest income. An investment is written off when it is no longer realizable and/or legally discharged. As of September 30, 2017 , the Company did not have any impaired CRE debt investments. Investments in Unconsolidated Ventures The Company will review its investments in unconsolidated ventures for which the Company did not elect the fair value option on a quarterly basis, or more frequently as necessary, to assess whether there are any indicators that the value may be impaired or that its carrying value may not be recoverable. An investment is considered impaired if the projected net recoverable amount over the expected holding period is less than the carrying value. In conducting this review, the Company will consider U.S. and global macroeconomic factors, including real estate sector conditions, together with investment specific and other factors. To the extent an impairment has occurred and is considered to be other than temporary, the loss will be measured as the excess of the carrying value of the investment over the estimated fair value and recorded in equity in earnings (losses) of unconsolidated ventures in the consolidated statements of operations. As of September 30, 2017 , the Company did not have any investments in unconsolidated ventures for which the Company did not elect the fair value option. Organization and Offering Costs The Advisor Entities, or their affiliates, are entitled to receive reimbursement for organization and offering costs paid on behalf of the Company in connection with the Offering. The Company is obligated to reimburse the Advisor Entities, or their affiliates, as applicable, for organization and offering costs to the extent the aggregate of selling commissions, dealer manager fees, distribution fees and other organization and offering costs do not exceed 15.0% of gross offering proceeds from the Offering. The Company records organization and offering costs each period based upon an allocation determined by the expectation of total organization and offering costs to be reimbursed. Organization costs are recorded as an expense in general and administrative expenses in the consolidated statements of operations and offering costs are recorded as a reduction to equity. Equity-Based Compensation The Company accounts for equity-based compensation awards using the fair value method, which requires an estimate of fair value of the award at the time of grant. All fixed equity-based awards to directors, which have no vesting conditions other than time of service, are amortized to compensation expense over the awards’ vesting period on a straight-line basis. Equity-based compensation is classified within general and administrative expense in the consolidated statements of operations. I ncome Taxes The Company elected to be taxed as a REIT under the Internal Revenue Code and to operate as such, commencing with its taxable year ended December 31, 2016 . The Company had little or no taxable income prior to electing REIT status. To maintain its qualification as a REIT, the Company must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the Company’s annual REIT taxable income to its stockholders (which is computed without regard to the dividends-paid deduction or net capital gain and which does not necessarily equal net income as calculated in accordance with U.S. GAAP). As a REIT, the Company generally will not be subject to federal income tax to the extent it distributes qualifying dividends to its stockholders. If the Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax on its taxable income at regular corporate income tax rates and generally will not be permitted to qualify for treatment as a REIT for federal income tax purposes for the four taxable years following the year during which qualification is lost unless the Internal Revenue Service grants the Company relief under certain statutory provisions. Such an event could materially adversely affect the Company’s net income and net cash available for distribution to stockholders. However, the Company intends to operate in such a manner as to qualify for treatment as a REIT. Recent Accounting Pronouncements Equity Method Accounting —In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-07, Investments - Equity Method and Joint Ventures (Topic 323), Simplifying the Transition to the Equity Method of Accounting , which amends several aspects of the accounting for equity-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statements of cash flows. The guidance is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2016. The Company adopted the new guidance prospectively on January 1, 2017 and the adoption of this standard did not have a material impact on its consolidated financial statements and related disclosures. Credit Losses —In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses , which changes the impairment model for most financial instruments by requiring companies to recognize an allowance for expected losses, rather than incurred losses as required currently by the other-than-temporary impairment model. The guidance will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures (e.g., loan commitments). The new guidance is effective for reporting periods beginning after December 15, 2019 and will be applied as a cumulative adjustment to retained earnings as of the effective date. The Company is currently assessing the potential effect the adoption of this guidance will have on its consolidated financial statements and related disclosures. Cash Flow Classifications —In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments, which makes eight targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The new guidance requires adoption on a retrospective basis unless it is impracticable to apply, in which case the company would be required to apply the amendments prospectively as of the earliest date practicable. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures. Restricted Cash —In November 2016 , the FASB issued ASU No. 2016-18, Statement of Cash Flows: Restricted Cash, which requires entities to show the changes in the total of cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. The guidance is effective for reporting periods beginning after December 15, 2017. The Company early adopted the new guidance prospectively on January 1, 2017 and the adoption of this standard did not have a material impact on its consolidated financial statements and related disclosures. Business Combinations —In January 2017, the FASB issued ASU No. 2017-01, Clarifying the definition of a business, which amends the guidance for determining whether a transaction involves the purchase or disposal of a business or an asset. The amendments clarify that when substantially all of the fair value of the gross assets acquired or disposed of is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities is not a business. The guidance is effective for fiscal years, and interim periods within those years, beginning December 15, 2017. The amendments in this update will be applied on a prospective basis. The Company expects that acquisitions of real estate or in-substance real estate will not meet the revised definition of a business because substantially all of the fair value is concentrated in a single identifiable asset or group of similar identifiable assets (i.e. land, buildings, and related intangible assets). A significant difference between the accounting for an asset acquisition and a business combination is that transaction costs are capitalized for an asset acquisition, rather than expensed for a business combination. The Company plans to adopt the standard on its required effective date of January 1, 2018. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures. Derecognition of Partial Sales of Nonfinancial Assets —In February 2017, the FASB issued ASU No. 2017-05, Clarifying the Scope of Asset Derecognition and Accounting for Partial Sales of Nonfinancial Assets , which clarifies the scope and application of recently established guidance on recognition of gains and losses from derecognition of non-financial assets, and defines in-substance non-financial assets. In addition, the guidance clarifies the accounting for partial sales of non-financial assets to be more consistent with the accounting for sale of a business. Specifically, in a partial sale to a non-customer, when a non-controlling interest is received or retained, the latter is considered a non-cash consideration and measured at fair value, which would result in full gain or loss recognized upon sale. The effective date for this guidance is January 1, 2018, with early adoption permitted beginning January 1, 2017. The Company plans to adopt the standard using the modified retrospective approach. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures.

Investment in Unconsolidated Ve

Investment in Unconsolidated Venture	9 Months Ended
	Sep. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]
Investment in Unconsolidated Venture	Investment in Unconsolidated Venture The following is a description of the Company’s investment in an unconsolidated venture, which the Company has elected to account for under the fair value option. 1285 Avenue of the Americas Venture As of September 30, 2017 , the Company held a non-controlling interest of approximately 1.0% in 1285 Avenue of the Americas (“1285 AoA”), a 1.8 million square foot Class-A office building located in midtown Manhattan. The remainder of the building is owned by institutional investors and funds affiliated with the Company’s Sub-advisor. The acquisition was part of an approximately $1.65 billion transaction in May 2016 that was sourced by RXR, the Company’s Co-sponsor and affiliate of its Sub-advisor. The purchase was approved by the Company’s board of directors, including all of its independent directors. The Company’s investment is accounted for as a cost method investment, for which the Company has elected the fair value option. As of September 30, 2017 , the carrying value of the Company’s investment in an unconsolidated venture was $5.5 million . For the nine months ended September 30, 2017 , the Company recognized equity in earnings of the unconsolidated venture of $494,963 , comprising dividends received of $134,774 and an increase in fair value of the investment of $360,189 .

Real Estate Debt Investment

Real Estate Debt Investment	9 Months Ended
	Sep. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]
Real Estate Debt Investment	Real Estate Debt Investment The following table presents the Company’s real estate debt investments as of September 30, 2017 : Asset type: Count Principal Amount Carrying Value Spread over LIBOR (1) Floating Rate as % of Principal Amount Mezzanine loans (2)(3) 2 $ 35,000,000 $ 34,811,111 9.39 % 100.0 % ____________________________________________ (1) Represents weighted average spread over LIBOR, based on principal amount. (2) Includes a $15.0 million mezzanine loan interest acquired through joint ventures with affiliates of RXR and an unaffiliated third party. The Company’s proportionate interest of the loan is 63.3% , representing $9.5 million of the principal amount. The Company consolidates the loan and records a non-controlling interest for the ownership of RXR and an unaffiliated third party. Refer to Note 2, “Summary of Significant Accounting Policies—Principles of Consolidation,” for further information. (3) Includes a $20.0 million mezzanine loan interest, net of unamortized origination fee, originated through a joint venture with an affiliate of RXR. The Company’s proportionate interest of the loan is 60.0% , representing $12.0 million of the principal amount. The Company consolidates the loan and records a non-controlling interest for the ownership of RXR. Refer to Note 2, “Summary of Significant Accounting Policies—Principles of Consolidation,” for further information. The following is a description of the Company’s real estate debt investments: In May 2017 , the Company, through a subsidiary of the Operating Partnership, completed the acquisition of a $9.5 million interest in a $15.0 million mezzanine loan through a joint venture with RXR Real Estate Value Added Fund - Fund III LP (together with its parallel funds, “VAF III”), an affiliate of RXR who acquired a $0.5 million interest in the loan, and an unaffiliated third party, who originated the loan and retained the remaining $5.0 million interest in the loan. The loan is secured by a pledge of an ownership interest in a retail development project located in Times Square, New York. The loan bears interest at a floating rate of 9.25% over the one-month London Interbank Offered Rate (“LIBOR”), and had an initial maturity in November 2017, with two one -year extension options available to the borrower. In September 2017, the borrower exercised its right to extend the term of the loan until November 2018. In August 2017, the Company, through a subsidiary of the Operating Partnership, completed the origination of a $12.0 million pari passu interest in a $20.0 million mezzanine loan, secured by a pledge of an ownership interest in a luxury condominium development project located in the West Village of New York City. The Company completed the investment through a partnership with VAF III, which contributed the remaining $8.0 million of the loan origination. The loan bears interest at a floating rate of 9.5% over the one-month LIBOR, with a LIBOR ceiling of 1.5% . The loan had a 1.0% origination fee and has an initial term of three years, with two one -year extension options available to the borrower.

Related Party Arrangements

Related Party Arrangements	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Related Party Arrangements	Related Party Arrangements Advisor Entities Subject to certain restrictions and limitations, the Advisor Entities are responsible for managing the Company’s affairs on a day-to-day basis and for identifying, acquiring, originating and asset managing investments on behalf of the Company. The Advisor Entities may delegate certain of their obligations to affiliated entities, which may be organized under the laws of the United States or foreign jurisdictions. References to the Advisor Entities include the Advisor Entities and any such affiliated entities. For such services, to the extent permitted by law and regulations, the Advisor Entities receive fees and reimbursements from the Company, of which the Sub-advisor generally receives 50% of all fees and up to 25% of all reimbursements. Pursuant to the advisory agreement, the advisor may defer or waive fees in its discretion. In February 2017, the Advisor amended and restated its advisory agreement (the “Amended Advisory Agreement”) with the Company for a term ending June 30, 2017, which eliminated the acquisition fees and disposition fees payable to the Advisor Entities, and reduced the monthly asset management fee payable to the Advisor Entities from one-twelfth of 1.25% to one-twelfth of 1.0% (as discussed further below). On March 17, 2017, the Company entered into a second amended and restated sub-advisory agreement with its Sub-advisor for a term ending June 30, 2017, which reflected the amendments to the fees in the Amended Advisory Agreement. In June 2017, the Amended Advisory Agreement and the sub-advisory agreement were renewed for an additional one -year term commencing on June 30, 2017, with terms identical to those in effect through June 30, 2017. The Company pays the Sub-advisor, or its affiliates, development, leasing, property management and construction related service fees that are usual and customary for owners and operators in the geographic area of the property. Below is a description of the fees and reimbursements in effect commencing on February 7, 2017 incurred to the Advisor Entities. Fees to Advisor Entities Asset Management Fee In February 2017, the Amended Advisory Agreement reduced the monthly asset management fee payable to one-twelfth of 1.0% of the cost of investment or sum of the amount funded or allocated for CRE investments, including expenses and any financing attributable to such investments, less any principal received on debt and securities investments (or the proportionate share thereof in the case of an investment made through a joint venture). Prior to that date, the Advisor Entities received a monthly asset management fee equal to one-twelfth of 1.25% of the cost of investments. Incentive Fee The Advisor, or its affiliates, is entitled to receive distributions equal to 15.0% of net cash flows of the Company, whether from continuing operations, repayment of loans, disposition of assets or otherwise, but only after stockholders have received, in the aggregate, cumulative distributions equal to their invested capital plus a 6.0% cumulative, non-compounded annual pre-tax return on such invested capital. Acquisition Fee In February 2017, the Amended Advisory Agreement eliminated the acquisition fees payable to the Advisor Entities. Prior to that date, the Advisor Entities were entitled to receive fees for providing structuring, diligence, underwriting advice and related services in connection with real estate acquisitions equal to 2.25% of each real estate property acquired by the Company, including acquisition costs and any financing attributable to an equity investment (or the proportionate share thereof in the case of an indirect equity investment made through a joint venture or other investment vehicle) and 1.0% of the amount funded or allocated by the Company to acquire or originate CRE debt investments, including acquisition costs and any financing attributable to such investments (or the proportionate share thereof in the case of an indirect investment made through a joint venture or other investment vehicle). From inception through February 2017, the Advisor Entities waived $0.1 million of acquisition fees. Disposition Fee In February 2017, the Amended Advisory Agreement eliminated the disposition fees payable to the Advisor Entities. Prior to that date, the Advisor Entities were entitled to receive a disposition fee equal to 2.0% of the contract sales price of each property sold and 1.0% of the contract sales price of each CRE debt investment sold or syndicated for substantial assistance in connection with the sale of investments and based on the services provided, as determined by the Company’s independent directors. From inception through February 2017, no disposition fees were incurred or paid. Reimbursements to Advisor Entities Operating Costs The Advisor Entities are entitled to receive reimbursement for direct and indirect operating costs incurred by the Advisor Entities in connection with administrative services provided to the Company. The Advisor Entities allocate, in good faith, indirect costs to the Company related to the Advisor Entities and their affiliates’ employees, occupancy and other general and administrative costs and expenses in accordance with the terms of, and subject to the limitations contained in, the advisory agreement with the Advisor Entities. The indirect costs include the Company’s allocable share of the Advisor Entities compensation and benefit costs associated with dedicated or partially dedicated personnel who spend all or a portion of their time managing the Company’s affairs, based upon the percentage of time devoted by such personnel to the Company’s affairs. The indirect costs also include rental and occupancy, technology, office supplies, travel and entertainment and other general and administrative costs and expenses also allocated based on the percentage of time devoted by personnel to the Company’s affairs. However, there is no reimbursement for personnel costs related to executive officers (although there may be reimbursement for certain executive officers of the Advisor) and other personnel involved in activities for which the Advisor Entities receive an acquisition fee or a disposition fee. The Advisor Entities allocate these costs to the Company relative to its and its affiliates’ other managed companies in good faith and has reviewed the allocation with the Company’s board of directors, including its independent directors. The Advisor Entities update the board of directors on a quarterly basis of any material changes to the expense allocation and provide a detailed review to the board of directors, at least annually, and as otherwise requested by the board of directors. The Company reimburses the Advisor Entities quarterly for operating costs (including the asset management fee) based on a calculation for the four preceding fiscal quarters not to exceed the greater of: (i) 2.0% of its average invested assets; or (ii) 25.0% of its net income determined without reduction for any additions to reserves for depreciation, loan losses or other similar non-cash reserves and excluding any gain from the sale of assets for that period (the “ 2% / 25% Guidelines”). Notwithstanding the above, the Company may reimburse the Advisor Entities for expenses in excess of this limitation if a majority of the Company’s independent directors determines that such excess expenses are justified based on unusual and non-recurring factors. The Company calculates the expense reimbursement quarterly based upon the trailing twelve -month period. Organization and Offering Costs The Advisor Entities are entitled to receive reimbursement for organization and offering costs paid on behalf of the Company in connection with the Offering. The Company is obligated to reimburse the Advisor Entities, as applicable, for organization and offering costs to the extent the aggregate of selling commissions, dealer manager fees, distribution fees and other organization and offering costs do not exceed 15% of gross proceeds from the Offering. The Company shall not reimburse the Advisor Entities for any organization and offering costs that the Company’s independent directors determine are not fair and commercially reasonable to the Company. The Company records organization and offering costs each period based on an allocation of expected total organization and offering costs to be reimbursed. Organization costs are recorded in general and administrative expenses in the consolidated statements of operations and offering costs were recorded as a reduction to equity. Dealer Manager Selling Commissions, Dealer Manager Fees and Distribution Fees Pursuant to a dealer manager agreement, the Company pays the Dealer Manager selling commissions of up to 7.0% of gross proceeds from the sale of Class A Shares and up to 2.0% of the gross proceeds from the sale of Class T Shares issued in the Primary Offering, all of which are reallowed to participating broker-dealers. The Company pays the Dealer Manager a dealer manager fee of up to 3.0% of gross proceeds from the sale of Class A Shares and up to 2.75% of the gross proceeds from the sale of Class T Shares issued in the Primary Offering, a portion of which is typically reallowed to participating broker-dealers and paid to certain employees of the Dealer Manager. No selling commissions or dealer manager fees are paid for the sale of Class I Shares. The Dealer Manager may enter into participating dealer agreements that provide for the Dealer Manager to pay a distribution fee of up to 2.0% over a maximum eight -year period in connection with the sale of Class I Shares in the Primary Offering. The Company will not reimburse the Dealer Manager for its payment of these fees and such fees will be subject to the limitations on underwriting compensation under applicable Financial Industry Regulatory Authority, Inc. (“FINRA”) rules. In addition, the Company pays the Dealer Manager a distribution fee of up to 1.0% annually of gross proceeds from the sale of Class T Shares issued in the Primary Offering, all of which are reallowed to participating broker-dealers. The Dealer Manager will cease receiving distribution fees with respect to each Class T Share upon the earliest of the following to occur: (i) a listing of the Company’s shares of common stock on a national securities exchange; (ii) such Class T Share is no longer outstanding; (iii) the Dealer Manager’s determination that total underwriting compensation with respect to all Class A Shares, Class T Shares and Class I Shares would be in excess of 10% of the gross proceeds of the Primary Offering; or (iv) the end of the month in which total underwriting compensation, with respect to Class T Shares issued in connection with the Primary Offering held by a stockholder within his or her particular account would be in excess of 10% of the stockholder’s total gross investment amount at the time of purchase of the primary Class T Shares held in such account. No selling commissions or dealer manager fees are paid for sales pursuant to the DRP or the Company’s distribution support agreement (“Distribution Support Agreement”). Summary of Fees and Reimbursements The following table presents the fees and reimbursements incurred to the Advisor Entities and the Dealer Manager for the nine months ended September 30, 2017 and the amount due to related party as of September 30, 2017 and December 31, 2016 : Type of Fee or Reimbursement Due to Related Party as of December 31, 2016 Nine Months Ended Due to Related Party as of September 30, 2017 (Unaudited) Financial Statement Location Incurred Paid Fees to Advisor Entities Asset management Asset management and other fees-related party $ 619 $ 144,084 $ 117,594 $ 27,109 Reimbursements to Advisor Entities Operating costs (1) General and administrative expenses 56,075 130,448 126,561 59,962 Organization (2) General and administrative expenses 1,436 11,161 10,193 2,404 Offering (2) Cost of capital (3) 27,174 212,060 193,679 45,555 Selling commissions Cost of capital (3) — 828,700 828,700 — Dealer Manager Fees Cost of capital (3) — 607,783 607,783 — Distribution Fees Cost of capital (3) 143,526 11,202 60,730 93,998 Total $ 228,830 $ 1,945,438 $ 1,945,240 $ 229,028 _______________________________________ (1) As of September 30, 2017 , the Advisor Entities have incurred unreimbursed operating costs on behalf of the Company of $12.2 million that remain eligible to allocate to the Company. (2) As of September 30, 2017 , the Advisor Entities have incurred unreimbursed organization and offering costs on behalf of the Company of $5.6 million that remain eligible to allocate to the Company. (3) Cost of capital is included in net proceeds from issuance of common stock in the Company’s consolidated statements of equity. Distribution Support Agreement Pursuant to the Distribution Support Agreement, NorthStar Realty, which is now a subsidiary of Colony NorthStar, and RXR committed to purchase 75% and 25% , respectively, of up to an aggregate of $10.0 million in shares of the Company’s common stock at a current offering price for Class A Shares, net of selling commissions and dealer manager fees, if cash distributions exceed modified funds from operations (as computed in accordance with the definition established by the Investment Program Association and adjusted for certain items) to provide additional funds to support distributions to stockholders. On December 23, 2015 , NorthStar Realty and RXR purchased 164,835 and 54,945 shares of the Company’s Class A Shares for $1.5 million and $0.5 million , respectively, under the Distribution Support Agreement to satisfy the minimum offering requirement, which reduced the total commitment. From inception through September 30, 2017 , pursuant to the Distribution Support Agreement, NorthStar Realty and RXR agreed to purchase an additional 2,399 and 800 shares of the Company’s Class A Shares, respectively, for an aggregate amount of approximately $29,000 . In November 2016 , the Company’s board of directors amended and restated the Distribution Support Agreement to extend the term of the Distribution Support Agreement for the period ending upon the termination of the primary portion of the Offering. Investments The Company expects to acquire more than a majority of its investments through joint venture arrangements with VAF III, an institutional real estate investment fund affiliated with RXR, or future funds or investment entities advised by affiliates of RXR. The Chief Executive Officer of RXR is a member of the Company’s board. As of September 30, 2017 , all of the Company’s investments were structured through joint venture arrangements with VAF III. NorthStar Realty and Investment in RXR Equity In December 2013, NorthStar Realty, which is now a subsidiary of Colony NorthStar, entered into a strategic transaction with RXR. The investment in RXR includes an approximate 27% equity interest. As a result of Colony NorthStar’s equity interest in RXR, Colony NorthStar may be entitled to certain fees in connection with RXR’s investment management business. In March 2017, Colony NorthStar, through an affiliate, committed $25.0 million to VAF III, an affiliate of RXR, for the purposes of investing in commercial real estate located in New York City. As of September 30, 2017 , Colony NorthStar has funded $7.6 million to VAF III, and had a remaining unfunded commitment of $17.4 million . Sub-advisor Fees Affiliates of the Company’s Sub-advisor provide leasing and management services for the property underlying the Company’s unconsolidated venture investment in 1285 AoA. For the nine months ended September 30, 2017 , the Company’s indirect share of management fees incurred by the unconsolidated venture was approximately $35,000 . Refer to Note 3, “Investment in Unconsolidated Venture” to the Consolidated Financial Statements for further discussion of the Company’s investment in an unconsolidated venture.

Equity-Based Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity-Based Compensation	Equity-Based Compensation The Company adopted a long-term incentive plan (the “Plan”), which it may use to attract and retain qualified officers, directors, employees and consultants, as well as an independent directors compensation plan, which is a component of the Plan. All stock issued under the Plan will consist of Class A Shares unless the board of directors of the Company determines otherwise. The Company currently intends to issue awards only to its independent directors under the Plan. The Company accounts for its equity-based compensation awards using the fair value method, which requires an estimate of fair value of the award at the time of grant. All fixed equity-based awards to directors, which have no vesting conditions other than time of service, are amortized to compensation expense over the vesting period on a straight-line basis. Equity-based compensation is recorded in general and administrative expenses in the consolidated statements of operations. Pursuant to the Plan, the Company granted Class A Shares of restricted common stock to its three independent directors concurrent with when the Company made its first investment in May 2016. As of September 30, 2017 , the Company’s independent directors have been granted a cumulative total of 30,000 Class A Shares of restricted common stock for an aggregate value of $0.3 million , based on the share price on the date of each grant. The restricted common stock granted vests quarterly over two years. However, the stock will become fully vested on the earlier occurrence of: (i) the termination of the independent director’s service as a director due to his or her death or disability; or (ii) a change in control of the Company. The Company recognized equity-based compensation expense of $37,917 and $ 9,479 for the three months ended September 30, 2017 and 2016 , respectively, and $95,160 and $ 9,479 for the nine months ended September 30, 2017 and 2016 , respectively, related to the issuance of restricted stock to the independent directors, which was recorded in general and administrative expenses in the consolidated statements of operations. As of September 30, 2017 , unvested shares totaled 15,000 .

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity Common Stock from Primary Offering The following table presents Class A Shares, Class T Shares and Class I Shares the Company issued, and the corresponding gross proceeds generated, in connection with its Primary Offering for the nine months ended September 30, 2017 , year ended December 31, 2016 and the period from inception through September 30, 2017 (in thousands): Class A Shares Class T Shares Class I Shares Nine months ended September 30, 2017 Shares issued 867 1,414 15 Gross proceeds $ 8,679 $ 13,507 $ 136 Year ended December 31, 2016 Shares issued 501 296 74 Gross proceeds $ 5,007 $ 2,831 $ 669 Inception through September 30, 2017 Shares issued 1,587 1,710 89 Gross proceeds $ 15,686 $ 16,338 $ 805 In November 2016 , the Company’s board of directors approved an extension of the Offering by one year to February 9, 2018. The board has the right to further extend or terminate the Offering at any time, as permitted by applicable law and regulation. Distribution Reinvestment Plan The Company adopted the DRP through which common stockholders may elect to reinvest an amount equal to the distributions declared on their shares in additional shares of the same class, in lieu of receiving cash distributions, at a price equal to $9.81 per Class A Share, $9.27 per Class T Share and $9.10 per Class I Share until the Company establishes an estimated value per share for each class of share. Once established, shares issued pursuant to the DRP will be priced at 97% of the estimated value per share for each class of the common stock, as determined by the Advisor Entities or other firms chosen for that purpose. Pursuant to amended FINRA Rule 2310, the Company expects to establish an estimated value per share for each class of share from and after 150 days following the second anniversary of breaking escrow in the offering and annually thereafter. No selling commissions, dealer manager fees or distribution fees are paid on shares issued pursuant to the DRP. The amount available for distributions on all Class T Shares will be reduced by the amount of distribution fees payable with respect to the Class T Shares issued in the Primary Offering. The board of directors of the Company may amend, suspend or terminate the DRP for any reason upon ten -days’ notice to participants, except that the Company may not amend the DRP to eliminate a participant’s ability to withdraw from the DRP. From inception through September 30, 2017 , the Company raised gross proceeds of $46,359 pursuant to the DRP. Distributions Distributions to stockholders are declared quarterly by the board of directors of the Company and, for the three months ended September 30, 2017, were paid monthly based on a daily amount of $0.000273973 per Class A Share and Class I Share, and $0.000273973 per Class T Share less the distribution fees that are payable with respect to such Class T Shares, which was equivalent to an annualized distribution amount of $0.10 per share of the Company’s common stock, less the distribution fee on Class T Shares. Cash distribution rates per share are not adjusted for the retroactive impact of the stock distributions issued in January and May 2017. On August 10, 2017, the board of directors of the Company approved a daily cash distribution of $0.000753425 per share of common stock for each of the three months ended December 31, 2017, less the distribution fees that are payable with respect to Class T Shares. Distributions are generally paid to stockholders on the first business day of the month following the month for which the distribution has accrued. The following table presents distributions declared for the nine months ended September 30, 2017 : Distributions (1) Period Cash DRP Total 2017 January $ 4,906 $ 2,977 $ 7,883 February 4,829 2,962 7,791 March 5,857 3,485 9,342 April 6,226 3,999 10,225 May 7,380 5,715 13,095 June 8,046 7,052 15,098 July 8,895 7,689 16,584 August 9,291 7,898 17,189 September 9,356 7,789 17,145 Total $ 64,786 $ 49,566 $ 114,352 _______________________________________ (1) Represents distributions declared for the period, even though such distributions are actually paid to stockholders the month following such period. Share Repurchase Program The Company adopted a share repurchase program that may enable stockholders to sell their shares to the Company in limited circumstances (the “Share Repurchase Program”). The Company may not repurchase shares unless a stockholder has held shares for one year. However, the Company may repurchase shares held less than one year in connection with a stockholder’s death or disability (as disability is defined in the Internal Revenue Code) and after receiving written notice from the stockholder or the stockholder’s estate. The Company is not obligated to repurchase shares pursuant to the Share Repurchase Program. The Company may amend, suspend or terminate the Share Repurchase Program at its discretion at any time, subject to certain notice requirements. Stock Distributions In April 2016, the board of directors of the Company approved a special stock distribution to all common stockholders of record on the close of business on the earlier of: (a) the date by which the Company raises $100 million pursuant to the Offering and (b) December 31, 2016 . On January 4, 2017, the Company issued the stock distribution to stockholders of record as of December 31, 2016 in the amount of 38,293 , 14,816 and 3,676 Class A Shares, Class T Shares and Class I Shares, respectively, based on 5.0% of the outstanding shares of each share class. On December 31, 2016, the Company reduced its retained earnings by the par value of the Class A Shares, Class T Shares and Class I Shares declared to be issued or $383 , $148 and $37 , respectively. In November 2016 , the board of directors of the Company authorized an additional special stock distribution to all stockholders of record of Class A Shares, Class T Shares and Class I Shares on the close of business on the earlier of: (a) the date on which the Company raises $25 million from the sale of shares pursuant to the Offering or (b) a date determined in the Company’s management’s discretion, but in any event no earlier than January 1, 2017 and no later than December 31, 2017, in an amount equal in value to 10.0% of the current gross offering price of each issued and outstanding Class A Share, Class T Share and Class I Share on the applicable date. The Company received and accepted subscriptions in the Offering in an aggregate amount in excess of $25 million on May 16, 2017, which became the record date. On May 22, 2017, the Company issued the stock distribution to stockholders of record as of May 16, 2017 in the amount of 133,341 , 130,752 and 8,672 Class A Shares, Class T Shares and Class I Shares, respectively. In May 2017, the Company reduced its retained earnings by the par value of the Class A Shares, Class T Shares and Class I Shares declared to be issued or $1,333 , $1,308 and $87 , respectively. The Company has retroactively adjusted net income (loss) per share and distributions declared per share data for the three and nine months ended September 30, 2016 to reflect the impact of the stock distributions. No selling commissions or dealer manager fees were paid in connection with the shares issued from the special stock distributions.

Non-controlling Interest

Non-controlling Interest	9 Months Ended
	Sep. 30, 2017
Noncontrolling Interest [Abstract]
Non-controlling Interest	Non-controlling Interest Operating Partnership Non-controlling interest includes the special limited partnership interest in the Operating Partnership held by the Special Unit Holder and is recorded as its non-controlling interest on the consolidated balance sheets as of September 30, 2017 and December 31, 2016 . Income (loss) attributable to the non-controlling interest is based on the Special Unit Holder’s share of the Operating Partnership’s income (loss) and was a de minimus amount for the three and nine months ended September 30, 2017 and 2016 . Other Other non-controlling interest represents third party equity interest in ventures that are consolidated within the Company’s financial statements. Net income attributable to the other non-controlling interest holders was approximately $369,619 for the three and nine months ended September 30, 2017 . There was no n et income attributable to the other non-controlling interest holders for the three and nine months ended September 30, 2016 .

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurement The fair value of financial instruments is categorized based on the priority of the inputs to the valuation technique and categorized into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument. Financial assets and liabilities recorded at fair value on the consolidated balance sheets are categorized based on the inputs to the valuation techniques as follows: Level 1. Quoted prices for identical assets or liabilities in an active market. Level 2. Financial assets and liabilities whose values are based on the following: a) Quoted prices for similar assets or liabilities in active markets. b) Quoted prices for identical or similar assets or liabilities in non-active markets. c) Pricing models whose inputs are observable for substantially the full term of the asset or liability. d) Pricing models whose inputs are derived principally from or corroborated by observable market data for substantially the full term of the asset or liability. Level 3. Prices or valuation techniques based on inputs that are both unobservable and significant to the overall fair value measurement. Investments for which fair value is measured using the NAV as a practical expedient are not categorized within the fair value hierarchy. Assets Measured at Fair Value on a Recurring Basis The following is a description of the valuation technique used to measure fair value of assets accounted for at fair value on a recurring basis and the general classification of the investment pursuant to the fair value hierarchy. Investment in Unconsolidated Venture The Company accounts for its equity investment in 1285 AoA through an unconsolidated venture at fair value based upon its share of the NAV of the underlying investment companies (the “1285 Investment Companies”). The Company continuously reviews the NAV provided by the 1285 Investment Companies, which were created solely for the purpose of pooling investor capital to invest in the 1285 AoA property. There is no active market for the Company’s ownership interest in the 1285 Investment Companies and any sale of the Company’s ownership interests is generally restricted and subject to approval by the general partner of the 1285 Investment Companies. Distributions from 1285 AoA will generally be received on a monthly basis. As of September 30, 2017 , the fair value of the Company’s investment in an unconsolidated venture was $5.5 million . As the Company utilizes NAV to determine fair value as a practical expedient, the Company will not present its investment in 1285 AoA within the fair value hierarchy. Fair Value of Financial Instruments In addition to the above disclosures regarding financial assets or liabilities which are recorded at fair value, U.S. GAAP requires disclosure of fair value about all financial instruments. The following disclosure of estimated fair value of financial instruments was determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize on disposition of the financial instruments. The use of different market assumptions and/or estimation methodologies may have a material effect on estimated fair value. The following table presents the principal amount, carrying value and fair value of certain financial assets as of September 30, 2017 and December 31, 2016 : September 30, 2017 December 31, 2016 Principal Amount Carrying Value Fair Value Principal Amount Carrying Value Fair Value Financial assets: (1) Real estate debt investments (2)(3) $ 35,000,000 $ 34,811,111 $ 35,000,000 $ — $ — $ — ____________________________________________ (1) The fair value of other financial instruments not included in this table is estimated to approximate their carrying value. (2) Includes a $15.0 million mezzanine loan interest acquired through joint ventures with affiliates of RXR and an unaffiliated third party. The Company’s proportionate interest of the loan is 63.3% , representing $9.5 million of the principal amount. The Company consolidates the investment and records a non-controlling interest for the ownership of RXR and the unaffiliated third party. (3) Includes a $20.0 million mezzanine loan interest, net of unamortized origination fee, originated through a joint venture with an affiliate of RXR. The Company’s proportionate interest of the loan is 60.0% , representing $12.0 million of the principal amount. The Company consolidates the investment and records a non-controlling interest for the ownership of RXR. Disclosure about fair value of financial instruments is based on pertinent information available to management as of the reporting date. Although management is not aware of any factors that would significantly affect fair value, such amounts have not been comprehensively revalued for purposes of these consolidated financial statements since that date and current estimates of fair value may differ significantly from the amounts presented herein. Real Estate Debt Investments For the CRE debt investments, fair value was approximated by comparing the current yield to the estimated yield for newly originated loans with similar credit risk or the market yield at which a third party might expect to purchase such investment. Fair value was determined assuming fully-extended maturity regardless of structural or economic tests required to achieve such extended maturity. As of the reporting date, the Company believes the principal amount approximates fair value. These fair value measurements of CRE debt are generally based on unobservable inputs and, as such, are classified as Level 3 of the fair value hierarchy.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company currently conducts its business through the following three segments, which are based on how management reviews and manages its business: • Commercial Real Estate Debt - CRE debt investments may include subordinate loans and participations in such loans and preferred equity interest. • Commercial Real Estate Equity - CRE equity investments will primarily be high-quality commercial real estate concentrated in the New York metropolitan area with a focus on office and mixed-use properties and a lesser emphasis on multifamily properties. These investments may include direct and indirect ownership in real estate and real estate assets that may or may not be structurally senior to a third party partner’s equity. • Corporate - The corporate segment includes corporate level asset management and other fees - related party and general and administrative expenses. The presentation of the Company’s segment reporting includes investments held directly or indirectly through joint ventures. The following tables present selected results of operations of the Company’s segments for the three and nine months ended September 30, 2017 : Three Months Ended September 30, 2017 Real Estate Debt Real Estate Equity Corporate Total Interest income $ 776,291 $ — $ — $ 776,291 Other income — — 14,901 14,901 Transaction costs (24,514 ) — — (24,514 ) Asset management and other fees - related party — — (71,327 ) (71,327 ) General and administrative expenses (12,310 ) — (95,779 ) (108,089 ) Income (loss) before equity in earnings (losses) of unconsolidated venture 739,467 — (152,205 ) 587,262 Equity in earnings (losses) of unconsolidated venture — 45,136 — 45,136 Net income (loss) $ 739,467 $ 45,136 $ (152,205 ) $ 632,398 Nine Months Ended September 30, 2017 Real Estate Debt Real Estate Equity Corporate Total Interest income $ 1,015,787 $ — $ — $ 1,015,787 Other income — — 42,636 42,636 Transaction costs (130,134 ) — — (130,134 ) Asset management and other fees - related party — — (144,084 ) (144,084 ) General and administrative expenses (14,245 ) — (249,266 ) (263,511 ) Income (loss) before equity in earnings (losses) of unconsolidated venture 871,408 — (350,714 ) 520,694 Equity in earnings (losses) of unconsolidated venture — 494,963 — 494,963 Net income (loss) $ 871,408 $ 494,963 $ (350,714 ) $ 1,015,657 The following table presents total assets by segment as of September 30, 2017 and December 31, 2016 : Total Assets Real Estate Debt Real Estate Equity Corporate (1) Total September 30, 2017 (Unaudited) $ 35,073,139 $ 5,533,264 $ 4,903,575 $ 45,509,978 December 31, 2016 — 5,173,075 5,472,068 10,645,143 _______________________________________ (1) Includes cash and cash equivalents, unallocated receivables, and other assets, net.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Common Stock from Primary Offering For the period from October 1, 2017 through November 9, 2017 , the Company issued 133,894 Class A Shares, 233,520 Class T Shares and 20,329 Class I Shares, representing gross proceeds of $1.3 million , $2.2 million and $0.2 million , respectively. Distributions On November 9, 2017 , the board of directors of the Company approved a daily cash distribution of $0.000753425 per share of common stock for each of the three months ended March 31, 2018. Distributions are generally paid to stockholders on the first business day of the month following the month for which the distribution was accrued.

Summary of Significant Accoun18

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Quarterly Presentation	Basis of Quarterly Presentation The accompanying unaudited consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, certain information and note disclosures normally included in the consolidated financial statements prepared under U.S. GAAP have been condensed or omitted. In the opinion of management, all adjustments considered necessary for a fair presentation of the Company’s financial position, results of operations and cash flows have been included and are of a normal and recurring nature. The operating results presented for interim periods are not necessarily indicative of the results that may be expected for any other interim period or for the entire year. These consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 , which was filed with the SEC on March 21, 2017.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company, the Operating Partnership and their consolidated subsidiaries. The Company consolidates variable interest entities (“VIEs”), if any, where the Company is the primary beneficiary and voting interest entities which are generally majority owned or otherwise controlled by the Company. All significant intercompany balances are eliminated in consolidation.
Variable Interest Entities	Variable Interest Entities A VIE is an entity that lacks one or more of the characteristics of a voting interest entity. A VIE is defined as an entity in which equity investors do not have the characteristics of a controlling financial interest or do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. The determination of whether an entity is a VIE includes both a qualitative and quantitative analysis. The Company bases its qualitative analysis on its review of the design of the entity, its organizational structure including decision-making ability and relevant financial agreements and the quantitative analysis on the forecasted cash flow of the entity. The Company reassesses its initial evaluation of an entity as a VIE upon the occurrence of certain reconsideration events. A VIE must be consolidated only by its primary beneficiary, which is defined as the party who, along with its affiliates and agents has both the: (i) power to direct the activities that most significantly impact the VIE’s economic performance; and (ii) obligation to absorb losses of the VIE or the right to receive benefits from the VIE, which could be significant to the VIE. The Company determines whether it is the primary beneficiary of a VIE by considering qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of its investment; the obligation or likelihood for the Company or other interests to provide financial support; consideration of the VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders and the similarity with and significance to the business activities of the Company and the other interests. The Company reassesses its determination of whether it is the primary beneficiary of a VIE each reporting period. Significant judgments related to these determinations include estimates about the current and future fair value and performance of investments held by these VIEs and general market conditions. The Company evaluates its investments, including investments in unconsolidated ventures, if any, to determine whether each investment is a VIE. The Company analyzes new investments, as well as reconsideration events for existing investments, which vary depending on type of investment. The most significant consolidated VIE is the Operating Partnership, which is a VIE because the non-controlling interests do not have substantive kick-out or participating rights. The Company consolidates this entity because it controls all significant business activities. The Operating Partnership consolidates certain VIEs that have non-controlling interests. Included in real estate debt investment on the Company’s consolidated balance sheets as of September 30, 2017 is $34.8 million related to such consolidated VIEs. The Company consolidates these entities because it determined it is the primary beneficiary. As of September 30, 2017 , the Company identified unconsolidated VIEs related to its investment in an unconsolidated venture. Based on management’s analysis, the Company determined that it is not the primary beneficiary. Accordingly, the VIEs are not consolidated in the Company’s financial statements as of September 30, 2017 . The Company did not provide financial support to the unconsolidated VIEs during the nine months ended September 30, 2017 . As of September 30, 2017 , there were no explicit arrangements or implicit variable interests that could require the Company to provide financial support to its unconsolidated VIEs. The Company’s maximum exposure to loss as of September 30, 2017 would not exceed its investment in the VIEs. Creditors of each of the VIEs have no recourse to the general credit of the Company.
Voting Interest Entities	Voting Interest Entities A voting interest entity is an entity in which the total equity investment at risk is sufficient to enable it to finance its activities independently and the equity holders have the power to direct the activities of the entity that most significantly impact its economic performance, the obligation to absorb the losses of the entity and the right to receive the residual returns of the entity. The usual condition for a controlling financial interest in a voting interest entity is ownership of a majority voting interest. If the Company has a majority voting interest in a voting interest entity, the entity will generally be consolidated. The Company does not consolidate a voting interest entity if there are substantive participating rights by other parties and/or kick-out rights by a single party or a simple majority vote. The Company performs on-going reassessments of whether entities previously evaluated under the voting interest framework have become VIEs, based on certain events, and therefore subject to the VIE consolidation framework.
Investments in Unconsolidated Ventures	Investments in Unconsolidated Ventures A non-controlling, unconsolidated ownership interest in an entity may be accounted for using the equity method or cost method, and for either method, the Company may elect the fair value option. The Company will account for an investment in an unconsolidated entity that does not qualify for equity method accounting using the cost method if the Company determines that it does not have significant influence. Under the cost method, equity in earnings is recorded as dividends are received to the extent they are not considered a return of capital, which is recorded as a reduction of cost of the investment. Under the equity method, the investment is adjusted each period for capital contributions and distributions and its share of the entity’s net income (loss). Capital contributions, distributions and net income (loss) of such entities are recorded in accordance with the terms of the governing documents. An allocation of net income (loss) may differ from the stated ownership percentage interest in such entity as a result of preferred returns and allocation formulas, if any, as described in such governing documents. Equity method investments are recognized using a cost accumulation model in which the investment is recognized based on the cost to the investor, which includes acquisition fees. The Company records as an expense certain acquisition costs and fees associated with consolidated investments deemed to be business combinations and capitalizes these costs for investments deemed to be acquisitions of an asset, including an equity method investment. The Company may account for an investment in an unconsolidated entity using either the equity or cost methods, but may choose to record the investment at fair value by electing the fair value option. The Company elected the fair value option for its investment in an unconsolidated venture and records the corresponding results from operations, which includes dividends received and its share of the change in fair value of the underlying investment, as equity in earnings (losses) of unconsolidated venture on the consolidated statements of operations. The Company measures fair value using the net asset value (“NAV”) of the underlying investment as a practical expedient as permitted by the guidance on fair value measurement. Dividends received in excess of cumulative equity in earnings from the unconsolidated venture will be deemed as a return of capital.
Non-controlling Interests	Non-controlling Interests A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to the Company. A non-controlling interest is required to be presented as a separate component of equity on the consolidated balance sheets and presented separately as net income (loss) attributable to controlling and non-controlling interests. An allocation to a non-controlling interest may differ from the stated ownership percentage interest in such entity as a result of a preferred return and allocation formula, if any, as described in such governing documents.
Estimates	Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that could affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates and assumptions.
Fair Value Option	Fair Value Option The fair value option provides an election that allows a company to irrevocably elect to record certain financial assets and liabilities at fair value on an instrument-by-instrument basis at initial recognition. Any change in fair value for assets and liabilities for which the election is made is recognized in earnings. The Company has elected the fair value option for its investment in an unconsolidated venture. The fair value of financial instruments is categorized based on the priority of the inputs to the valuation technique and categorized into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument. Financial assets and liabilities recorded at fair value on the consolidated balance sheets are categorized based on the inputs to the valuation techniques as follows: Level 1. Quoted prices for identical assets or liabilities in an active market. Level 2. Financial assets and liabilities whose values are based on the following: a) Quoted prices for similar assets or liabilities in active markets. b) Quoted prices for identical or similar assets or liabilities in non-active markets. c) Pricing models whose inputs are observable for substantially the full term of the asset or liability. d) Pricing models whose inputs are derived principally from or corroborated by observable market data for substantially the full term of the asset or liability. Level 3. Prices or valuation techniques based on inputs that are both unobservable and significant to the overall fair value measurement. Investments for which fair value is measured using the NAV as a practical expedient are not categorized within the fair value hierarchy.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly-liquid investments with an original maturity date of three months or less to be cash equivalents. Cash, including amounts restricted, may at times exceed the Federal Deposit Insurance Corporation deposit insurance limit of $250,000 per institution. The Company mitigates credit risk by placing cash and cash equivalents with major financial institutions. To date, the Company has not experienced any losses on cash and cash equivalents.
Real Estate Debt Investments	Real Estate Debt Investments CRE debt investments are generally intended to be held to maturity and, accordingly, are carried at cost, net of unamortized loan fees, premium and discount. CRE debt investments that are deemed to be impaired are carried at amortized cost less a reserve, if deemed appropriate, which would approximate fair value. CRE debt investments where the Company does not have the intent to hold the loan for the foreseeable future or until its expected payoff are classified as held for sale and recorded at the lower of cost or estimated fair value.
Acquisition Fees and Expenses	Acquisition Expenses The total of all acquisition expenses for an investment cannot exceed, in the aggregate, 6.0% of the contract purchase price of such investment unless such excess is approved by a majority of the directors, including independent directors. From inception through September 30, 2017 , total acquisition expenses did not exceed the allowed limit for any investment. The Company records as an expense certain acquisition costs associated with transactions deemed to be business combinations in which it consolidates the asset and capitalizes these costs for transactions deemed to be acquisitions of an asset, including an equity investment.
Revenue Recognition	Revenue Recognition Real Estate Debt Investments Interest income is recognized on an accrual basis and any related premium, discount, origination costs and fees are amortized over the life of the investment using the effective interest method. The amortization is reflected as an adjustment to interest income in the consolidated statements of operations. The amortization of a premium or accretion of a discount is discontinued if such investment is reclassified to held for sale.
Credit Losses and Impairment on Investments	Credit Losses and Impairment on Investments Real Estate Debt Investments CRE debt investments are considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all principal and interest amounts due according to the contractual terms. The Company assesses the credit quality of the portfolio and adequacy of reserves on a quarterly basis or more frequently as necessary. Significant judgment of the Company is required in this analysis. The Company considers the estimated net recoverable value of the investment as well as other factors, including but not limited to the fair value of any collateral, the amount and the status of any senior debt, the quality and financial condition of the borrower and the competitive situation of the area where the underlying collateral is located. Because this determination is based on projections of future economic events, which are inherently subjective, the amount ultimately realized may differ materially from the carrying value as of the balance sheet date. If upon completion of the assessment, the estimated fair value of the underlying collateral is less than the net carrying value of the investment, a reserve is recorded with a corresponding charge to a credit provision. The reserve is maintained at a level that is determined to be adequate by management to absorb probable losses. Income recognition is suspended for an investment at the earlier of the date at which payments become 90-days past due or when, in the opinion of the Company, a full recovery of income and principal becomes doubtful. When the ultimate collectability of the principal of an impaired investment is in doubt, all payments are applied to principal under the cost recovery method. When the ultimate collectability of the principal of an impaired investment is not in doubt, contractual interest is recorded as interest income when received, under the cash basis method until an accrual is resumed when the investment becomes contractually current and performance is demonstrated to be resumed. Interest accrued and not collected will be reversed against interest income. An investment is written off when it is no longer realizable and/or legally discharged. As of September 30, 2017 , the Company did not have any impaired CRE debt investments. Investments in Unconsolidated Ventures The Company will review its investments in unconsolidated ventures for which the Company did not elect the fair value option on a quarterly basis, or more frequently as necessary, to assess whether there are any indicators that the value may be impaired or that its carrying value may not be recoverable. An investment is considered impaired if the projected net recoverable amount over the expected holding period is less than the carrying value. In conducting this review, the Company will consider U.S. and global macroeconomic factors, including real estate sector conditions, together with investment specific and other factors. To the extent an impairment has occurred and is considered to be other than temporary, the loss will be measured as the excess of the carrying value of the investment over the estimated fair value and recorded in equity in earnings (losses) of unconsolidated ventures in the consolidated statements of operations. As of September 30, 2017 , the Company did not have any investments in unconsolidated ventures for which the Company did not elect the fair value option.
Organization and Offering Costs	Organization and Offering Costs The Advisor Entities, or their affiliates, are entitled to receive reimbursement for organization and offering costs paid on behalf of the Company in connection with the Offering. The Company is obligated to reimburse the Advisor Entities, or their affiliates, as applicable, for organization and offering costs to the extent the aggregate of selling commissions, dealer manager fees, distribution fees and other organization and offering costs do not exceed 15.0% of gross offering proceeds from the Offering. The Company records organization and offering costs each period based upon an allocation determined by the expectation of total organization and offering costs to be reimbursed. Organization costs are recorded as an expense in general and administrative expenses in the consolidated statements of operations and offering costs are recorded as a reduction to equity.
Equity-Based Compensation	Equity-Based Compensation The Company accounts for equity-based compensation awards using the fair value method, which requires an estimate of fair value of the award at the time of grant. All fixed equity-based awards to directors, which have no vesting conditions other than time of service, are amortized to compensation expense over the awards’ vesting period on a straight-line basis. Equity-based compensation is classified within general and administrative expense in the consolidated statements of operations. The Company adopted a long-term incentive plan (the “Plan”), which it may use to attract and retain qualified officers, directors, employees and consultants, as well as an independent directors compensation plan, which is a component of the Plan. All stock issued under the Plan will consist of Class A Shares unless the board of directors of the Company determines otherwise. The Company currently intends to issue awards only to its independent directors under the Plan. The Company accounts for its equity-based compensation awards using the fair value method, which requires an estimate of fair value of the award at the time of grant. All fixed equity-based awards to directors, which have no vesting conditions other than time of service, are amortized to compensation expense over the vesting period on a straight-line basis. Equity-based compensation is recorded in general and administrative expenses in the consolidated statements of operations.
Income Taxes	I ncome Taxes The Company elected to be taxed as a REIT under the Internal Revenue Code and to operate as such, commencing with its taxable year ended December 31, 2016 . The Company had little or no taxable income prior to electing REIT status. To maintain its qualification as a REIT, the Company must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the Company’s annual REIT taxable income to its stockholders (which is computed without regard to the dividends-paid deduction or net capital gain and which does not necessarily equal net income as calculated in accordance with U.S. GAAP). As a REIT, the Company generally will not be subject to federal income tax to the extent it distributes qualifying dividends to its stockholders. If the Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax on its taxable income at regular corporate income tax rates and generally will not be permitted to qualify for treatment as a REIT for federal income tax purposes for the four taxable years following the year during which qualification is lost unless the Internal Revenue Service grants the Company relief under certain statutory provisions. Such an event could materially adversely affect the Company’s net income and net cash available for distribution to stockholders. However, the Company intends to operate in such a manner as to qualify for treatment as a REIT.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Equity Method Accounting —In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-07, Investments - Equity Method and Joint Ventures (Topic 323), Simplifying the Transition to the Equity Method of Accounting , which amends several aspects of the accounting for equity-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statements of cash flows. The guidance is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2016. The Company adopted the new guidance prospectively on January 1, 2017 and the adoption of this standard did not have a material impact on its consolidated financial statements and related disclosures. Credit Losses —In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses , which changes the impairment model for most financial instruments by requiring companies to recognize an allowance for expected losses, rather than incurred losses as required currently by the other-than-temporary impairment model. The guidance will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures (e.g., loan commitments). The new guidance is effective for reporting periods beginning after December 15, 2019 and will be applied as a cumulative adjustment to retained earnings as of the effective date. The Company is currently assessing the potential effect the adoption of this guidance will have on its consolidated financial statements and related disclosures. Cash Flow Classifications —In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments, which makes eight targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The new guidance requires adoption on a retrospective basis unless it is impracticable to apply, in which case the company would be required to apply the amendments prospectively as of the earliest date practicable. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures. Restricted Cash —In November 2016 , the FASB issued ASU No. 2016-18, Statement of Cash Flows: Restricted Cash, which requires entities to show the changes in the total of cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. The guidance is effective for reporting periods beginning after December 15, 2017. The Company early adopted the new guidance prospectively on January 1, 2017 and the adoption of this standard did not have a material impact on its consolidated financial statements and related disclosures. Business Combinations —In January 2017, the FASB issued ASU No. 2017-01, Clarifying the definition of a business, which amends the guidance for determining whether a transaction involves the purchase or disposal of a business or an asset. The amendments clarify that when substantially all of the fair value of the gross assets acquired or disposed of is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities is not a business. The guidance is effective for fiscal years, and interim periods within those years, beginning December 15, 2017. The amendments in this update will be applied on a prospective basis. The Company expects that acquisitions of real estate or in-substance real estate will not meet the revised definition of a business because substantially all of the fair value is concentrated in a single identifiable asset or group of similar identifiable assets (i.e. land, buildings, and related intangible assets). A significant difference between the accounting for an asset acquisition and a business combination is that transaction costs are capitalized for an asset acquisition, rather than expensed for a business combination. The Company plans to adopt the standard on its required effective date of January 1, 2018. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures. Derecognition of Partial Sales of Nonfinancial Assets —In February 2017, the FASB issued ASU No. 2017-05, Clarifying the Scope of Asset Derecognition and Accounting for Partial Sales of Nonfinancial Assets , which clarifies the scope and application of recently established guidance on recognition of gains and losses from derecognition of non-financial assets, and defines in-substance non-financial assets. In addition, the guidance clarifies the accounting for partial sales of non-financial assets to be more consistent with the accounting for sale of a business. Specifically, in a partial sale to a non-customer, when a non-controlling interest is received or retained, the latter is considered a non-cash consideration and measured at fair value, which would result in full gain or loss recognized upon sale. The effective date for this guidance is January 1, 2018, with early adoption permitted beginning January 1, 2017. The Company plans to adopt the standard using the modified retrospective approach. The Company does not believe that this guidance will have a material impact on its consolidated financial statements and related disclosures.

Real Estate Debt Investment (Ta

Real Estate Debt Investment (Tables)	9 Months Ended
	Sep. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Real Estate Investments	The following table presents the Company’s real estate debt investments as of September 30, 2017 : Asset type: Count Principal Amount Carrying Value Spread over LIBOR (1) Floating Rate as % of Principal Amount Mezzanine loans (2)(3) 2 $ 35,000,000 $ 34,811,111 9.39 % 100.0 % ____________________________________________ (1) Represents weighted average spread over LIBOR, based on principal amount. (2) Includes a $15.0 million mezzanine loan interest acquired through joint ventures with affiliates of RXR and an unaffiliated third party. The Company’s proportionate interest of the loan is 63.3% , representing $9.5 million of the principal amount. The Company consolidates the loan and records a non-controlling interest for the ownership of RXR and an unaffiliated third party. Refer to Note 2, “Summary of Significant Accounting Policies—Principles of Consolidation,” for further information. (3) Includes a $20.0 million mezzanine loan interest, net of unamortized origination fee, originated through a joint venture with an affiliate of RXR. The Company’s proportionate interest of the loan is 60.0% , representing $12.0 million of the principal amount. The Company consolidates the loan and records a non-controlling interest for the ownership of RXR. Refer to Note 2, “Summary of Significant Accounting Policies—Principles of Consolidation,” for further information.

Related Party Arrangements (Tab

Related Party Arrangements (Tables)	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Summary of Fees and Reimbursements to the Advisor Entities and Dealer Manager	The following table presents the fees and reimbursements incurred to the Advisor Entities and the Dealer Manager for the nine months ended September 30, 2017 and the amount due to related party as of September 30, 2017 and December 31, 2016 : Type of Fee or Reimbursement Due to Related Party as of December 31, 2016 Nine Months Ended Due to Related Party as of September 30, 2017 (Unaudited) Financial Statement Location Incurred Paid Fees to Advisor Entities Asset management Asset management and other fees-related party $ 619 $ 144,084 $ 117,594 $ 27,109 Reimbursements to Advisor Entities Operating costs (1) General and administrative expenses 56,075 130,448 126,561 59,962 Organization (2) General and administrative expenses 1,436 11,161 10,193 2,404 Offering (2) Cost of capital (3) 27,174 212,060 193,679 45,555 Selling commissions Cost of capital (3) — 828,700 828,700 — Dealer Manager Fees Cost of capital (3) — 607,783 607,783 — Distribution Fees Cost of capital (3) 143,526 11,202 60,730 93,998 Total $ 228,830 $ 1,945,438 $ 1,945,240 $ 229,028 _______________________________________ (1) As of September 30, 2017 , the Advisor Entities have incurred unreimbursed operating costs on behalf of the Company of $12.2 million that remain eligible to allocate to the Company. (2) As of September 30, 2017 , the Advisor Entities have incurred unreimbursed organization and offering costs on behalf of the Company of $5.6 million that remain eligible to allocate to the Company. (3) Cost of capital is included in net proceeds from issuance of common stock in the Company’s consolidated statements of equity.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Schedule of Stock by Class	The following table presents Class A Shares, Class T Shares and Class I Shares the Company issued, and the corresponding gross proceeds generated, in connection with its Primary Offering for the nine months ended September 30, 2017 , year ended December 31, 2016 and the period from inception through September 30, 2017 (in thousands): Class A Shares Class T Shares Class I Shares Nine months ended September 30, 2017 Shares issued 867 1,414 15 Gross proceeds $ 8,679 $ 13,507 $ 136 Year ended December 31, 2016 Shares issued 501 296 74 Gross proceeds $ 5,007 $ 2,831 $ 669 Inception through September 30, 2017 Shares issued 1,587 1,710 89 Gross proceeds $ 15,686 $ 16,338 $ 805
Schedule of Distributions Declared	The following table presents distributions declared for the nine months ended September 30, 2017 : Distributions (1) Period Cash DRP Total 2017 January $ 4,906 $ 2,977 $ 7,883 February 4,829 2,962 7,791 March 5,857 3,485 9,342 April 6,226 3,999 10,225 May 7,380 5,715 13,095 June 8,046 7,052 15,098 July 8,895 7,689 16,584 August 9,291 7,898 17,189 September 9,356 7,789 17,145 Total $ 64,786 $ 49,566 $ 114,352 _______________________________________ (1) Represents distributions declared for the period, even though such distributions are actually paid to stockholders the month following such period.

Fair Value Fair Value (Tables)

Fair Value Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value, by Balance Sheet Grouping	The following table presents the principal amount, carrying value and fair value of certain financial assets as of September 30, 2017 and December 31, 2016 : September 30, 2017 December 31, 2016 Principal Amount Carrying Value Fair Value Principal Amount Carrying Value Fair Value Financial assets: (1) Real estate debt investments (2)(3) $ 35,000,000 $ 34,811,111 $ 35,000,000 $ — $ — $ — ____________________________________________ (1) The fair value of other financial instruments not included in this table is estimated to approximate their carrying value. (2) Includes a $15.0 million mezzanine loan interest acquired through joint ventures with affiliates of RXR and an unaffiliated third party. The Company’s proportionate interest of the loan is 63.3% , representing $9.5 million of the principal amount. The Company consolidates the investment and records a non-controlling interest for the ownership of RXR and the unaffiliated third party. (3) Includes a $20.0 million mezzanine loan interest, net of unamortized origination fee, originated through a joint venture with an affiliate of RXR. The Company’s proportionate interest of the loan is 60.0% , representing $12.0 million of the principal amount. The Company consolidates the investment and records a non-controlling interest for the ownership of RXR.

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of Segment Reporting by Segment	The following tables present selected results of operations of the Company’s segments for the three and nine months ended September 30, 2017 : Three Months Ended September 30, 2017 Real Estate Debt Real Estate Equity Corporate Total Interest income $ 776,291 $ — $ — $ 776,291 Other income — — 14,901 14,901 Transaction costs (24,514 ) — — (24,514 ) Asset management and other fees - related party — — (71,327 ) (71,327 ) General and administrative expenses (12,310 ) — (95,779 ) (108,089 ) Income (loss) before equity in earnings (losses) of unconsolidated venture 739,467 — (152,205 ) 587,262 Equity in earnings (losses) of unconsolidated venture — 45,136 — 45,136 Net income (loss) $ 739,467 $ 45,136 $ (152,205 ) $ 632,398 Nine Months Ended September 30, 2017 Real Estate Debt Real Estate Equity Corporate Total Interest income $ 1,015,787 $ — $ — $ 1,015,787 Other income — — 42,636 42,636 Transaction costs (130,134 ) — — (130,134 ) Asset management and other fees - related party — — (144,084 ) (144,084 ) General and administrative expenses (14,245 ) — (249,266 ) (263,511 ) Income (loss) before equity in earnings (losses) of unconsolidated venture 871,408 — (350,714 ) 520,694 Equity in earnings (losses) of unconsolidated venture — 494,963 — 494,963 Net income (loss) $ 871,408 $ 494,963 $ (350,714 ) $ 1,015,657 The following table presents total assets by segment as of September 30, 2017 and December 31, 2016 : Total Assets Real Estate Debt Real Estate Equity Corporate (1) Total September 30, 2017 (Unaudited) $ 35,073,139 $ 5,533,264 $ 4,903,575 $ 45,509,978 December 31, 2016 — 5,173,075 5,472,068 10,645,143 _______________________________________ (1) Includes cash and cash equivalents, unallocated receivables, and other assets, net.

Business and Organization (Deta

Business and Organization (Details)	Dec. 23, 2015USD ($)	Mar. 28, 2014USD ($)shares	Nov. 30, 2016	Sep. 30, 2017USD ($)employee$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Nov. 09, 2017USD ($)	Sep. 30, 2017USD ($)employee$ / sharesshares	Oct. 26, 2016USD ($)$ / shares	Feb. 09, 2015USD ($)$ / shares
Class of Stock [Line Items]
Number of employees | employee				0			0
Common stock, shares authorized (shares) | shares				400,000,000			400,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.01			$ 0.01
Preferred stock, shares authorized (shares) | shares				50,000,000	50,000,000		50,000,000
Preferred stock, par value (in dollars per share) | $ / shares				$ 0.01	$ 0.01		$ 0.01
Net proceeds from issuance of common stock				$ 20,663,827	$ 7,697,289
Offering extension period			1 year
Minimum
Class of Stock [Line Items]
Common stock declared effective to offer									$ 2,000,000
Maximum
Class of Stock [Line Items]
Common stock declared effective to offer									2,000,000,000
IPO
Class of Stock [Line Items]
Common stock declared effective to offer								$ 1,800,000,000	1,800,000,000
Sponsor of the Registrant
Class of Stock [Line Items]
Number of shares of common stock issued (in shares) | shares		16,667
Co-Sponsor
Class of Stock [Line Items]
Number of shares of common stock issued (in shares) | shares		5,556
Class A common
Class of Stock [Line Items]
Common stock, shares authorized (shares) | shares				120,000,000	120,000,000		120,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.01	$ 0.01		$ 0.01
Number of shares of common stock issued (in shares) | shares				867,000	501,000		1,587,000
Net proceeds from issuance of common stock		$ 200,000		$ 8,679,000	$ 5,007,000		$ 15,686,000
Class A common | Distribution Reinvestment Plan
Class of Stock [Line Items]
Common stock declared effective to offer								$ 200,000,000	$ 200,000,000
Purchase price (in dollars per share) | $ / shares				$ 9.81			$ 9.81	$ 9.81	$ 9.81
Class A common | IPO
Class of Stock [Line Items]
Purchase price (in dollars per share) | $ / shares								10.1111	10.1111
Class A common | Sponsor of the Registrant
Class of Stock [Line Items]
Net proceeds from issuance of common stock	$ 1,500,000
Class A common | Co-Sponsor
Class of Stock [Line Items]
Net proceeds from issuance of common stock	$ 500,000
Class T common
Class of Stock [Line Items]
Common stock, shares authorized (shares) | shares				240,000,000	240,000,000		240,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.01	$ 0.01		$ 0.01
Number of shares of common stock issued (in shares) | shares				1,414,000	296,000		1,710,000
Net proceeds from issuance of common stock				$ 13,507,000	$ 2,831,000		$ 16,338,000
Class T common | Distribution Reinvestment Plan
Class of Stock [Line Items]
Purchase price (in dollars per share) | $ / shares				$ 9.27			$ 9.27	9.27	9.27
Class T common | IPO
Class of Stock [Line Items]
Purchase price (in dollars per share) | $ / shares								9.5538	$ 9.5538
Class I Common
Class of Stock [Line Items]
Common stock, shares authorized (shares) | shares				40,000,000	40,000,000		40,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.01	$ 0.01		$ 0.01
Number of shares of common stock issued (in shares) | shares				15,000	74,000		89,000
Net proceeds from issuance of common stock				$ 136,000	$ 669,000		$ 805,000
Class I Common | Distribution Reinvestment Plan
Class of Stock [Line Items]
Purchase price (in dollars per share) | $ / shares				$ 9.10			$ 9.10	9.10
Class I Common | IPO
Class of Stock [Line Items]
Purchase price (in dollars per share) | $ / shares								$ 9.10
NorthStar/RXR NTR OP Holdings LLC
Class of Stock [Line Items]
Noncontrolling interests				$ 1,000
Subsequent Event | IPO
Class of Stock [Line Items]
Net proceeds from issuance of common stock						$ 36,700,000
Subsequent Event | Distribution Reinvestment Plan
Class of Stock [Line Items]
Proceeds from issuance of common stock, dividend reinvestment plan						$ 96,236

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Real estate debt investments, net	$ 34,811,111	$ 0
Acquisition fees and expenses, percentage of contract purchase	6.00%
Organization and Offering Costs | Sub-Advisor | Maximum
Related Party Transaction [Line Items]
Percentage of gross offering proceeds from primary offering, reimbursable as organization and offering costs (not to exceed)	15.00%

Investment in Unconsolidated 26

Investment in Unconsolidated Venture (Details) ft² in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2016USD ($)	Sep. 30, 2017USD ($)ft²	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)ft²	Sep. 30, 2016USD ($)
Business Acquisition [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners		1.00%		1.00%
Equity in earnings (losses) of unconsolidated venture		$ 45,136	$ 15,029	$ 494,963	$ 11,408
Dividends from unconsolidated venture				134,774	7,154
Change in fair value				$ 494,963	$ 11,408
RXR Realty
Business Acquisition [Line Items]
Investment in unconsolidated venture	$ 1,650,000,000
1285 Avenue of the Americas Venture | Class-A Office Building | Co-Sponsor
Business Acquisition [Line Items]
Square feet of office building acquired | ft²		1.8		1.8
Carrying value		$ 5,500,000		$ 5,500,000
Equity in earnings (losses) of unconsolidated venture				494,963
Dividends from unconsolidated venture				134,774
Change in fair value				$ 360,189

Real Estate Debt Investment (De

Real Estate Debt Investment (Details)	1 Months Ended
	Aug. 31, 2017USD ($)extension	May 31, 2017USD ($)extension	Sep. 30, 2017USD ($)
Times Square, New York
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in subsidiaries and affiliates		$ 9,500,000
Number of optional extensions to initial maturity date | extension		2
Duration of extension options		1 year
West Village, New York
Schedule of Equity Method Investments [Line Items]
Number of optional extensions to initial maturity date | extension	2
Duration of extension options	1 year
Proportionate interest in debt instrument	$ 12,000,000
Debt issuance costs, percentage	1.00%
Mortgage loan on real estate term (in years)	3 years
Corporate Joint Venture | Mezzanine Loan | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages		$ 15,000,000	$ 15,000,000
VAF III | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in subsidiaries and affiliates		500,000
Unaffiliated Third Party | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in subsidiaries and affiliates		$ 5,000,000
London Interbank Offered Rate (LIBOR) | Mezzanine Loan
Schedule of Equity Method Investments [Line Items]
Spread over LIBOR(1)			9.39%
London Interbank Offered Rate (LIBOR) | Mezzanine Loan | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Spread over LIBOR(1)			9.25%
London Interbank Offered Rate (LIBOR) | Mezzanine Loan | West Village, New York
Schedule of Equity Method Investments [Line Items]
Floating interest rate	9.50%
VAF III | West Village, New York
Schedule of Equity Method Investments [Line Items]
Proportionate interest in debt instrument	$ 8,000,000
VAF III | Corporate Joint Venture | Mezzanine Loan | West Village, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages	$ 20,000,000		$ 20,000,000
Maximum | London Interbank Offered Rate (LIBOR) | West Village, New York
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate	1.50%

Real Estate Debt Investment Sch

Real Estate Debt Investment Schedule of Real Estate Debt Investment (Details)	9 Months Ended
	Sep. 30, 2017USD ($)loan	Aug. 31, 2017USD ($)	May 31, 2017USD ($)	Dec. 31, 2016USD ($)
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 34,811,111			$ 0
West Village, New York
Schedule of Equity Method Investments [Line Items]
Proportionate interest in debt instrument		$ 12,000,000
Mezzanine Loan
Schedule of Equity Method Investments [Line Items]
Count | loan	2
Principal Amount	$ 35,000,000
Carrying Value	$ 34,811,111
Floating Rate as % of Principal Amount	100.00%
Mezzanine Loan | London Interbank Offered Rate (LIBOR)
Schedule of Equity Method Investments [Line Items]
Spread over LIBOR(1)	9.39%
Mezzanine Loan | London Interbank Offered Rate (LIBOR) | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Spread over LIBOR(1)	9.25%
VAF III | West Village, New York
Schedule of Equity Method Investments [Line Items]
Proportionate interest in debt instrument		8,000,000
Corporate Joint Venture | Mezzanine Loan | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages	$ 15,000,000
Ownership percentage	63.30%
Proportionate interest in debt instrument	$ 9,500,000
Corporate Joint Venture | Mezzanine Loan | West Village, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages	$ 20,000,000
Ownership percentage	60.00%
Proportionate interest in debt instrument	$ 12,000,000
Corporate Joint Venture | Mezzanine Loan | Times Square, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages	15,000,000		$ 15,000,000
Corporate Joint Venture | VAF III | Mezzanine Loan | West Village, New York
Schedule of Equity Method Investments [Line Items]
Face amount of mortgages	$ 20,000,000	$ 20,000,000

Related Party Arrangements (Nar

Related Party Arrangements (Narrative) (Details)

Dec. 23, 2015USD ($)shares

Mar. 28, 2014USD ($)

Jun. 30, 2017

Feb. 28, 2017

Jan. 31, 2017

Sep. 30, 2017USD ($)quartershares

Sep. 30, 2016USD ($)

Dec. 31, 2016USD ($)shares

Feb. 28, 2017USD ($)

Sep. 30, 2017USD ($)shares

Sep. 30, 2017USD ($)shares

Mar. 31, 2017USD ($)

Dec. 31, 2013

Acquisition Fee

Fees and reimbursements incurred

$ 1,945,438

Distribution Support Agreement [Abstract]

Net proceeds from issuance of common stock

20,663,827

$ 7,697,289

NorthStar Realty and RXR [Abstract]

Investment in unconsolidated ventures

0

$ 1,900,000

Class A

Distribution Support Agreement [Abstract]

Net proceeds from issuance of common stock

$ 200,000

$ 8,679,000

$ 5,007,000

$ 15,686,000

Net proceeds from issuance of common stock (in shares) | shares

867,000

501,000

1,587,000

Class T

Distribution Support Agreement [Abstract]

Net proceeds from issuance of common stock

$ 13,507,000

$ 2,831,000

$ 16,338,000

Net proceeds from issuance of common stock (in shares) | shares

1,414,000

296,000

1,710,000

Class I

Distribution Support Agreement [Abstract]

Net proceeds from issuance of common stock

$ 136,000

$ 669,000

$ 805,000

Net proceeds from issuance of common stock (in shares) | shares

15,000

74,000

89,000

Sub-Advisor

Advisor Entities

Sub-advisors percentage rights to fees

50.00%

Sub-advisors percentage rights to reimbursements

25.00%

Sub-Advisor | Asset Management Fee

Acquisition Fee

Fees and reimbursements incurred

$ 35,000

Sub-Advisor | Organization and Offering Costs | Maximum

Organization and Offering Costs

Percentage of gross offering proceeds from primary offering, reimbursable as organization and offering costs (not to exceed)

15.00%

Advisor

Advisor Entities

Term of renewed agreement

1 year

Advisor | Asset Management Fee

Asset Management Fee

Annual asset management fee rate

1.00%

1.25%

Monthly asset management fee rate

0.08%

0.10417%

Asset management fee monthly factor

8.33%

Advisor | Incentive Fees

Incentive Fee

Distributions, percent of net cash flow after meeting the pre-tax return

15.00%

Cumulative, non-compounded annual pre-tax return on invested capital

6.00%

Advisor | Acquisition Fee

Acquisition Fee

Asset acquisition fee as a percentage of each real estate property acquired by the company, including acquisition expenses and any financing attributable to the investment (percent)

2.25%

Asset acquisition fee as a percentage of principal amount funded to originate debt, including acquisition expenses and any financing attributable to the investment (percent)

1.00%

Advisor | Disposition Fee

Disposition Fee

Disposition fee of contract sales price of each property

2.00%

Maximum disposition fee as a percentage of contract sales price of CRE investment sold

1.00%

Advisor | Operating Costs

Operating Costs

Reimbursement of personnel costs related to officers and personnel involved in activities for which other fees is received

$ 0

Number of fiscal quarters | quarter

4

Reimbursement expense period

12 months

Advisor | Operating Costs | Maximum

Operating Costs

Percentage of average invested assets reimbursable as operating costs (not to exceed the greater of)

2.00%

Percentage of net income, without reduction for any additions to reserves for depreciation, loan losses or other similar non-cash reserves and excluding any gain from the sale of the company's assets, considered for reimbursement of operating costs (not to exceed the greater of)

25.00%

Dealer Manager | Class A and T

Dealer Manager

Percent of gross proceeds of the Primary Offering (in excess of)

10.00%

Dealer Manager | Class A

Dealer Manager

Selling commissions (per share)

7.00%

Dealer manager fee (per share)

3.00%

Dealer Manager | Class T

Dealer Manager

Selling commissions (per share)

2.00%

Dealer manager fee (per share)

2.75%

Distribution fee, percent of gross proceeds (up to)

1.00%

Percent of stockholder's gross investment (in excess of)

10.00%

Dealer Manager | Class I

Dealer Manager

Distribution fee, percent of gross proceeds (up to)

2.00%

Dealer Manager | Maximum | Class I

Dealer Manager

Dealer agreement eligibility period

8 years

Dealer Manager | Selling Commissions and Fees Related to DRP

Dealer Manager

Selling commissions or dealer manager fees paid

$ 0

Dealer Manager | Selling Commissions Or Dealer Manager Fees | Class I

Dealer Manager

Selling commissions or dealer manager fees paid

0

Asset management and other fees - related party | Advisor | Asset Management Fee

Acquisition Fee

Fees and reimbursements incurred

$ 144,084

Asset management and other fees - related party | Advisor | Acquisition Fee

Acquisition Fee

Fees and reimbursements incurred

$ 100,000

Asset management and other fees - related party | Advisor | Disposition Fee

Acquisition Fee

Fees and reimbursements incurred

$ 0

Distribution Support Agreement | Class A

Distribution Support Agreement [Abstract]

Net proceeds from issuance of common stock

$ 29,000

Distribution Support Agreement | NorthStar Realty | Class A

Distribution Support Agreement [Abstract]

Commitment to purchase common stock (percentage)

75.00%

Commitment to purchase common stock

$ 10,000,000

$ 10,000,000

$ 10,000,000

Net proceeds from issuance of common stock

$ 1,500,000

Net proceeds from issuance of common stock (in shares) | shares

164,835

2,399

Distribution Support Agreement | RXR Realty | Class A

Distribution Support Agreement [Abstract]

Commitment to purchase common stock (percentage)

25.00%

Net proceeds from issuance of common stock

$ 500,000

Net proceeds from issuance of common stock (in shares) | shares

54,945

800

RXR Realty | NorthStar Realty

NorthStar Realty and RXR [Abstract]

Equity method investment, ownership percentage

27.00%

Equity method investment, parent funding commitment

$ 25,000,000

Investment in unconsolidated ventures

$ 7,600,000

Remaining unfunded commitment

$ 17,400,000

$ 17,400,000

$ 17,400,000

Related Party Arrangements - Su

Related Party Arrangements - Summary of Fees and Reimbursements (Details)	9 Months Ended
	Sep. 30, 2017USD ($)
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	$ 228,830
Fees and reimbursements incurred	1,945,438
Fees and reimbursements paid	1,945,240
Due to related party, ending balance	229,028
Advisor Entities | Unreimbursed Operating Costs
Related Party Transaction, Due to Related Parties [Roll Forward]
Fees and reimbursements incurred	12,200,000
Advisor Entities | Unreimbursed Organization and Offering Costs
Related Party Transaction, Due to Related Parties [Roll Forward]
Fees and reimbursements incurred	5,600,000
Asset management and other fees - related party | Advisor Entities | Asset management
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	619
Fees and reimbursements incurred	144,084
Fees and reimbursements paid	117,594
Due to related party, ending balance	27,109
General and administrative expenses | Advisor Entities | Operating costs
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	56,075
Fees and reimbursements incurred	130,448
Fees and reimbursements paid	126,561
Due to related party, ending balance	59,962
General and administrative expenses | Advisor Entities | Organization
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	1,436
Fees and reimbursements incurred	11,161
Fees and reimbursements paid	10,193
Due to related party, ending balance	2,404
Cost of capital | Advisor Entities | Offering
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	27,174
Fees and reimbursements incurred	212,060
Fees and reimbursements paid	193,679
Due to related party, ending balance	45,555
Cost of capital | Dealer Manager | Selling Commissions
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	0
Fees and reimbursements incurred	828,700
Fees and reimbursements paid	828,700
Due to related party, ending balance	0
Cost of capital | Dealer Manager | Dealer Manager Fees
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	0
Fees and reimbursements incurred	607,783
Fees and reimbursements paid	607,783
Due to related party, ending balance	0
Cost of capital | Dealer Manager | Distribution Fees
Related Party Transaction, Due to Related Parties [Roll Forward]
Due to related party, beginning balance	143,526
Fees and reimbursements incurred	11,202
Fees and reimbursements paid	60,730
Due to related party, ending balance	$ 93,998

Equity-Based Compensation (Deta

Equity-Based Compensation (Details) - Restricted stock	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)directorshares	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)directorshares	Sep. 30, 2016USD ($)
Equity-based compensation
Number of independent directors | director	3		3
Quarterly vesting period (in years)			2 years
Equity-based compensation expense | $	$ 37,917	$ 9,479	$ 95,160	$ 9,479
Shares granted (shares) | shares	15,000		15,000
Class A common
Equity-based compensation
Cumulative shares granted (shares) | shares	30,000		30,000
Aggregate value of stock granted | $	$ 300,000		$ 300,000

Stockholders' Equity - Common S

Stockholders' Equity - Common Stock from Primary Offering (Narrative) (Details) - USD ($) shares in Thousands	Mar. 28, 2014	Nov. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2017
Class of Stock [Line Items]
Common stock offering			$ 20,663,827	$ 7,697,289
Offering extension period		1 year
Class A
Class of Stock [Line Items]
Number of shares of common stock issued (in shares)			867	501	1,587
Common stock offering	$ 200,000		$ 8,679,000	$ 5,007,000	$ 15,686,000
Class T
Class of Stock [Line Items]
Number of shares of common stock issued (in shares)			1,414	296	1,710
Common stock offering			$ 13,507,000	$ 2,831,000	$ 16,338,000
Class I
Class of Stock [Line Items]
Number of shares of common stock issued (in shares)			15	74	89
Common stock offering			$ 136,000	$ 669,000	$ 805,000

Stockholders' Equity - Distribu

Stockholders' Equity - Distribution Reinvestment Plan (Narrative) (Details) - USD ($)	9 Months Ended	12 Months Ended	42 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2017	Oct. 26, 2016	Feb. 09, 2015
Stockholders Equity Note [Line Items]
Gross proceeds raised pursuant to DRP	$ 43,194	$ 3,164
Distribution Reinvestment Plan
Stockholders Equity Note [Line Items]
Percent of estimated value per share	97.00%
Period within which the company expects to establish an estimated value per share following the second anniversary	150 days
Notice period served by board of directors to amend or terminate distribution reinvestment plan	10 days
Gross proceeds raised pursuant to DRP			$ 46,359
Class A common | Distribution Reinvestment Plan
Stockholders Equity Note [Line Items]
Purchase price (in dollars per share)	$ 9.81		$ 9.81	$ 9.81	$ 9.81
Class T common | Distribution Reinvestment Plan
Stockholders Equity Note [Line Items]
Purchase price (in dollars per share)	9.27		9.27	9.27	$ 9.27
Class I Common | Distribution Reinvestment Plan
Stockholders Equity Note [Line Items]
Purchase price (in dollars per share)	$ 9.10		$ 9.10	$ 9.10
Dealer Manager | Selling Commissions and Fees Related to DRP
Stockholders Equity Note [Line Items]
Selling commissions or dealer manager fees paid	$ 0

Stockholders' Equity - Distri34

Stockholders' Equity - Distributions (Narrative) (Details) - $ / shares	Aug. 10, 2017	Nov. 30, 2016	Sep. 30, 2017
Class of Stock [Line Items]
Daily cash distribution (in dollars per share)	$ 0.000753425
Annualized distribution amount (in dollars per share)		$ 0.10
Class A common
Class of Stock [Line Items]
Daily cash distribution (in dollars per share)			$ 0.000273973
Class I Common
Class of Stock [Line Items]
Daily cash distribution (in dollars per share)		$ 0.000273973
Class T common
Class of Stock [Line Items]
Daily cash distribution (in dollars per share)			$ 0.000273973

Stockholders' Equity - Dividend

Stockholders' Equity - Dividends Declared (Details) - USD ($)	1 Months Ended									9 Months Ended	12 Months Ended
	Sep. 30, 2017	Aug. 31, 2017	Jul. 31, 2017	Jun. 30, 2017	May 31, 2017	Apr. 30, 2017	Mar. 31, 2017	Feb. 28, 2017	Jan. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
Cash	$ 9,356	$ 9,291	$ 8,895	$ 8,046	$ 7,380	$ 6,226	$ 5,857	$ 4,829	$ 4,906	$ 64,786
DRP	7,789	7,898	7,689	7,052	5,715	3,999	3,485	2,962	2,977	49,566
Total	$ 17,145	$ 17,189	$ 16,584	$ 15,098	$ 13,095	$ 10,225	$ 9,342	$ 7,791	$ 7,883	$ 114,352	$ 23,927

Stockholders' Equity - Share Re

Stockholders' Equity - Share Repurchase Program (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Threshold period to repurchase shares (less than)	1 year

Stockholders' Equity - Stock Di

Stockholders' Equity - Stock Distribution (Details) - USD ($)	May 22, 2017	May 17, 2017	May 16, 2017	Nov. 30, 2016	Apr. 30, 2016	Sep. 30, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Offering threshold for special stock dividends			$ 25,000,000	$ 25,000,000	$ 100,000,000
Class A
Class of Stock [Line Items]
Common stock dividends, (in shares)	133,341						38,293
Percent of current gross offering price for special stock dividend				10.00%			5.00%
Stock issued during period, value, stock dividend		$ 1,333					$ 383
Class T
Class of Stock [Line Items]
Common stock dividends, (in shares)	130,752						14,816
Stock issued during period, value, stock dividend		1,308					$ 148
Class I
Class of Stock [Line Items]
Common stock dividends, (in shares)	8,672						3,676
Stock issued during period, value, stock dividend		$ 87					$ 37
Dealer Manager | Selling Commissions and Fees Related to Stock Distribution
Class of Stock [Line Items]
Selling commissions or dealer manager fees paid						$ 0

Non-controlling Interest Narrat

Non-controlling Interest Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests	$ 287,182	$ 0	$ 369,619	$ (53)
Unaffiliated Third Party
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests	369,619	0	369,619	0
Operating Partnership
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests	$ 0	$ 0	$ 0	$ 53

Fair Value (Details)

Fair Value (Details) - USD ($)	Sep. 30, 2017	Aug. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair value of investment in unconsolidated venture	$ 5,500,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate debt investments, net	34,811,111		$ 0
Mezzanine Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate debt investments, net	34,811,111
Times Square, New York | Corporate Joint Venture | Mezzanine Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Face amount of mortgages	$ 15,000,000
Ownership percentage	63.30%
Proportionate interest in debt instrument	$ 9,500,000
West Village, New York
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proportionate interest in debt instrument		$ 12,000,000
West Village, New York | Corporate Joint Venture | Mezzanine Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Face amount of mortgages	$ 20,000,000
Ownership percentage	60.00%
Proportionate interest in debt instrument	$ 12,000,000
Principal Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate debt investments, net	35,000,000		0
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate debt investments, net	34,811,111		0
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate debt investments, net	$ 35,000,000		$ 0

Segment Reporting (Details)

Segment Reporting (Details)		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segment	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment				3
Interest income		$ 776,291	$ 0	$ 1,015,787	$ 0
Other income		14,901	0	42,636	0
Transaction costs		(24,514)	0	(130,134)	0
Asset management and other fees - related party		(71,327)	(15,292)	(144,084)	(132,460)
General and administrative expenses		(108,089)	(39,771)	(263,511)	(59,901)
Income (loss) before equity in earnings (losses) of unconsolidated venture		587,262	(55,063)	520,694	(192,361)
Equity in earnings (losses) of unconsolidated venture		45,136	15,029	494,963	11,408
Net income (loss)		632,398	$ (40,034)	1,015,657	$ (180,953)	$ 487,749
Assets	[1]	45,509,978		45,509,978		10,645,143
Real Estate Debt
Segment Reporting Information [Line Items]
Interest income		776,291		1,015,787
Other income		0		0
Transaction costs		(24,514)		(130,134)
Asset management and other fees - related party		0		0
General and administrative expenses		(12,310)		(14,245)
Income (loss) before equity in earnings (losses) of unconsolidated venture		739,467		871,408
Equity in earnings (losses) of unconsolidated venture		0		0
Net income (loss)		739,467		871,408
Assets		35,073,139		35,073,139		0
Real Estate Equity
Segment Reporting Information [Line Items]
Interest income		0		0
Other income		0		0
Transaction costs		0		0
Asset management and other fees - related party		0		0
General and administrative expenses		0		0
Income (loss) before equity in earnings (losses) of unconsolidated venture		0		0
Equity in earnings (losses) of unconsolidated venture		45,136		494,963
Net income (loss)		45,136		494,963
Assets		5,533,264		5,533,264		5,173,075
Corporate
Segment Reporting Information [Line Items]
Interest income		0		0
Other income		14,901		42,636
Transaction costs		0		0
Asset management and other fees - related party		(71,327)		(144,084)
General and administrative expenses		(95,779)		(249,266)
Income (loss) before equity in earnings (losses) of unconsolidated venture		(152,205)		(350,714)
Equity in earnings (losses) of unconsolidated venture		0		0
Net income (loss)		(152,205)		(350,714)
Assets		$ 4,903,575		$ 4,903,575		$ 5,472,068
[1]	Represents the consolidated assets and liabilities of NorthStar/RXR Operating Partnership, LP (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which the Company is the sole general partner and owns approximately 99.99%. As of September 30, 2017, the Operating Partnership includes $34.8 million of assets of certain VIEs that are consolidated by the Operating Partnership. Refer to Note 2, “Summary of Significant Accounting Policies.”

Subsequent Events - Common Stoc

Subsequent Events - Common Stock from Primary Offering (Details) - USD ($)	Mar. 28, 2014	Nov. 09, 2017	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2017
Subsequent Event [Line Items]
Common stock offering			$ 20,663,827	$ 7,697,289
Class A
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)			867,000	501,000	1,587,000
Common stock offering	$ 200,000		$ 8,679,000	$ 5,007,000	$ 15,686,000
Class T
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)			1,414,000	296,000	1,710,000
Common stock offering			$ 13,507,000	$ 2,831,000	$ 16,338,000
Class I
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)			15,000	74,000	89,000
Common stock offering			$ 136,000	$ 669,000	$ 805,000
Subsequent Event | Class A | Primary Offering
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)		133,894
Common stock offering		$ 1,300,000
Subsequent Event | Class T | Primary Offering
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)		233,520
Common stock offering		$ 2,200,000
Subsequent Event | Class I | Primary Offering
Subsequent Event [Line Items]
Number of shares of common stock issued (in shares)		20,329
Common stock offering		$ 200,000

Subsequent Events - Distributio

Subsequent Events - Distributions (Details) - $ / shares	Nov. 09, 2017	Aug. 10, 2017
Subsequent Event [Line Items]
Daily cash distribution (in dollars per share)		$ 0.000753425
Subsequent Event
Subsequent Event [Line Items]
Daily cash distribution (in dollars per share)	$ 0.000753425