Strategic Storage Growth Trust 10-Q 13 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 06, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	ck0001575428
Entity Registrant Name	STRATEGIC STORAGE GROWTH TRUST, INC.
Entity Central Index Key	1,575,428
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Class A Common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		19,094,325
Class T Common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,612,599

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Sep. 30, 2018		Dec. 31, 2017
Real estate facilities:
Land	$ 49,297,619	[1]	$ 40,955,234
Buildings	177,973,692	[1]	125,878,582
Site improvements	12,291,160	[1]	9,527,049
Real estate facilities, gross	239,562,471	[1]	176,360,865
Accumulated depreciation	(11,647,550)	[1]	(7,052,779)
Real estate facilities, net	227,914,921	[1]	169,308,086
Construction in process	4,108,635	[1]	10,753,238
Real estate facilities, net	232,023,556	[1]	180,061,324
Cash and cash equivalents	2,566,634	[1]	52,720,171
Other assets, net	3,516,766	[1]	5,825,906
Debt issuance costs, net	124,852	[1]	465,378
Intangible assets, net	512,877	[1]	856,979
Total assets	238,744,685	[1]	239,929,758
LIABILITIES AND EQUITY
Secured debt, net	12,873,428	[1]	5,594,779
Accounts payable and accrued liabilities	4,236,454	[1]	3,800,992
Due to affiliates	2,871,539	[1]	3,406,088
Distributions payable	1,033,826	[1]	833,488
Total liabilities	21,015,247	[1]	13,635,347
Commitments and contingencies (Note 8)		[1]
Redeemable common stock	8,208,920	[1]	5,679,485
Equity:
Preferred Stock, $0.001 par value; 200,000,000 shares authorized; none issued and outstanding at September 30, 2018 and December 31, 2017		[1]
Additional paid-in capital	247,569,361	[1]	247,552,584
Distributions	(18,708,534)	[1]	(10,655,612)
Accumulated deficit	(19,332,578)	[1]	(16,607,616)
Accumulated other comprehensive income	46,992	[1]	371,923
Total Strategic Storage Growth Trust, Inc. equity	209,601,948	[1]	220,687,789
Noncontrolling interests in our Operating Partnership	(81,430)	[1]	(72,863)
Total equity	209,520,518	[1]	220,614,926
Total liabilities and equity	238,744,685	[1]	239,929,758
Class A Common stock
Equity:
Common stock, Value	19,094	[1]	18,943
Total equity	19,094		18,943
Class T Common stock
Equity:
Common stock, Value	7,613	[1]	7,567
Total equity	$ 7,613		$ 7,567
[1]	(Unaudited)

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	[1]	Dec. 31, 2017
Preferred Stock, par value	$ 0.001		$ 0.001
Preferred Stock, shares authorized	200,000,000		200,000,000
Preferred Stock, shares issued	0		0
Preferred Stock, shares outstanding	0		0
Class A Common stock
Common stock, par value	$ 0.001		$ 0.001
Common stock, shares authorized	350,000,000		350,000,000
Common Stock, shares issued	19,094,325		18,942,639
Common Stock, shares outstanding	19,094,325		18,942,639
Class T Common stock
Common stock, par value	$ 0.001		$ 0.001
Common stock, shares authorized	350,000,000		350,000,000
Common Stock, shares issued	7,612,599		7,566,333
Common Stock, shares outstanding	7,612,599		7,566,333
[1]	(Unaudited)

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Ancillary operating revenue	$ 166,657	$ 29,181	$ 425,517	$ 70,885
Total revenues	5,224,659	3,804,702	14,369,493	9,557,514
Operating expenses:
Property operating expenses	2,307,041	1,862,731	6,277,406	4,350,934
Property operating expenses – affiliates	647,305	605,275	1,838,634	1,265,058
General and administrative	868,907	417,384	2,634,015	1,596,060
Depreciation	1,708,502	1,182,706	4,662,698	2,716,371
Intangible amortization expense	275,398	157,213	739,102	601,644
Acquisition expenses – affiliates	33,446	925,570	172,800	1,998,058
Other property acquisition expenses	2,448	542,548	93,722	882,454
Total operating expenses	5,843,047	5,693,427	16,418,377	13,410,579
Operating loss	(618,388)	(1,888,725)	(2,048,884)	(3,853,065)
Other income (expense):
Interest expense	(120,105)	(24,992)	(201,034)	(64,147)
Interest expense – debt issuance costs	(170,144)	(46,137)	(463,397)	(372,934)
Other	544	168,284	(13,694)	278,934
Net loss	(908,093)	(1,791,570)	(2,727,009)	(4,011,212)
Net loss attributable to the noncontrolling interests in our Operating Partnership	749	1,155	2,047	3,631
Net loss attributable to Strategic Storage Growth Trust, Inc. common stockholders	(907,344)	(1,790,415)	(2,724,962)	(4,007,581)
Real Estate
Revenues:
Self storage rental revenue	$ 5,058,002	$ 3,775,521	$ 13,943,976	$ 9,486,629
Class A Common stock
Other income (expense):
Net loss per share-basic and diluted	$ (0.03)	$ (0.07)	$ (0.10)	$ (0.18)
Weighted average shares outstanding-basic and diluted	19,086,331	18,809,084	19,043,406	16,109,501
Class T Common stock
Other income (expense):
Net loss per share-basic and diluted	$ (0.03)	$ (0.07)	$ (0.10)	$ (0.18)
Weighted average shares outstanding-basic and diluted	7,607,311	7,520,457	7,593,641	5,962,771

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (908,093)	$ (1,791,570)	$ (2,727,009)	$ (4,011,212)
Other comprehensive income (loss):
Foreign currency translation adjustments	202,536	328,298	(324,931)	589,800
Comprehensive loss	(705,557)	(1,463,272)	(3,051,940)	(3,421,412)
Comprehensive loss attributable to noncontrolling interests:
Comprehensive loss attributable to the noncontrolling interests in our Operating Partnership	596	1,073	2,292	3,332
Comprehensive loss attributable to Strategic Storage Growth Trust, Inc. common stockholders	$ (704,961)	$ (1,462,199)	$ (3,049,648)	$ (3,418,080)

Consolidated Statement of Equit

Consolidated Statement of Equity (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($)	Total		Additional Paid-in Capital	Distributions	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total Strategic Storage Growth Trust,Inc.Equity	Noncontrolling Interests in our Operating Partnership	Class A Common stock	Class T Common stock	Redeemable common Stock
Beginning Balance at Dec. 31, 2017	$ 220,614,926		$ 247,552,584	$ (10,655,612)	$ (16,607,616)	$ 371,923	$ 220,687,789	$ (72,863)	$ 18,943	$ 7,567
Beginning Balance at Dec. 31, 2017	5,679,485										$ 5,679,485
Beginning Balance (in shares) at Dec. 31, 2017									18,942,639	7,566,333
Offering costs	(9,147)		(9,147)				(9,147)
Changes to redeemable common stock	(3,904,447)		(3,904,447)				(3,904,447)				3,904,447
Redemptions of common stock	(144)						(144)		$ (111)	$ (33)	(1,375,012)
Redemptions of common stock (in shares)									(111,404)	(33,306)
Issuance of restricted stock	5						5		$ 5
Issuance of restricted stock (in shares)									5,000
Distributions	(8,052,922)			(8,052,922)			(8,052,922)
Distributions to noncontrolling interests	(6,520)							(6,520)
Issuance of shares for distribution reinvestment plan	3,904,447		3,904,111				3,904,447		$ 257	$ 79
Issuance of shares for distribution reinvestment plan (in shares)									258,090	79,572
Stock based compensation expense	26,260		26,260				26,260
Net loss attributable to Strategic Storage Growth Trust, Inc.	(2,724,962)				(2,724,962)		(2,724,962)
Net loss attributable to the noncontrolling interests	(2,047)							(2,047)
Foreign currency translation adjustment	(324,931)					(324,931)	(324,931)
Ending Balance at Sep. 30, 2018	209,520,518	[1]	$ 247,569,361	$ (18,708,534)	$ (19,332,578)	$ 46,992	$ 209,601,948	$ (81,430)	$ 19,094	$ 7,613
Ending Balance at Sep. 30, 2018	$ 8,208,920	[1]									$ 8,208,920
Ending Balance (in shares) at Sep. 30, 2018									19,094,325	7,612,599
[1]	(Unaudited)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (2,727,009)		$ (4,011,212)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	5,865,197		3,690,949
Expense related to issuance of restricted stock	26,260		18,413
Increase (decrease) in cash and cash equivalents from changes in assets and liabilities:
Other assets, net	(520,196)		(773,925)
Accounts payable and accrued liabilities	313,680		1,221,776
Due to affiliates	30,072		44,143
Net cash provided by operating activities	2,988,004		190,144
Cash flows from investing activities:
Purchase of real estate	(50,345,667)		(88,250,000)
Additions and development to real estate	(5,363,763)		(5,021,085)
Deposits on acquisitions of real estate facilities			(2,450,000)
Redemption of preferred equity investment	1,397,760
Net cash used in investing activities	(54,311,670)		(95,721,085)
Cash flows from financing activities:
Proceeds from issuance of revolving secured debt	9,000,000		5,000,000
Principal payments of revolving secured debt			(12,647,000)
Proceeds from issuance of non-revolving secured debt	3,326,827
Principal payments of non-revolving secured debt	(5,053,000)
Debt issuance costs	(151,323)		(135,960)
Gross proceeds from issuance of common stock			171,980,653
Offering costs	(583,027)		(13,180,033)
Recission of common stock			(350,000)
Redemptions of common stock	(1,384,376)		(98,797)
Distributions paid to common stockholders	(3,948,280)		(2,311,627)
Distributions paid to noncontrolling interests	(6,377)		(6,035)
Net cash provided by financing activities	1,200,444		148,251,201
Impact of foreign exchange rate changes on cash and cash equivalents	(30,315)		(9,708)
Net change in cash and cash equivalents	(50,153,537)		52,710,552
Cash and cash equivalents, beginning of period	52,720,171		3,642,631
Cash and cash equivalents, end of period	2,566,634	[1]	56,353,183
Supplemental disclosures and non-cash transactions:
Cash paid for interest	393,555		305,691
Interest capitalized	270,497		213,137
Supplemental disclosure of noncash activities:
Deposits applied to purchase of real estate facilities	1,550,000		400,000
Construction in process in accounts payable and accrued liabilities	906,695
Construction in process placed in service	7,628,352
Offering costs included in due to affiliates			3,063,039
Distributions payable to common stockholders	1,033,826		802,925
Issuance of shares for distribution reinvestment plan	$ 3,904,447		3,368,914
Redemptions of common stock included in accounts payable and accrued liabilities			$ 139,121
[1]	(Unaudited)

Organization

Organization	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Organization	Note 1. Organization Strategic Storage Growth Trust, Inc., a Maryland corporation (the “Company”), was formed on March 12, 2013 under the Maryland General Corporation Law for the purpose of engaging in the business of investing in self storage facilities. The Company’s year-end is December 31. As used in this report, “we,” “us,” “our,” and “Company” refer to Strategic Storage Growth Trust, Inc. and each of our subsidiaries. SmartStop Asset Management, LLC, a Delaware limited liability company organized in 2013, was the sponsor of our Offering of shares of common stock (our “Sponsor”), as described below. Our Sponsor is a company focused on providing real estate advisory, asset management, and property management services. Our Sponsor owns 97.5% of the economic interests (and 100% of the voting membership interests) of SS Growth Advisor, LLC (our “Advisor”) and owns 100% of SS Growth Property Management, LLC (our “Property Manager”). On October 1, 2015, SmartStop Self Storage, Inc. (“SmartStop”) and Extra Space Storage Inc. (“Extra Space”), along with subsidiaries of each of SmartStop and Extra Space, closed on a merger transaction (the “Merger”) in which SmartStop was acquired by Extra Space for $13.75 per share in cash, representing an enterprise value of approximately $1.4 billion. At the closing of the Merger, our Sponsor, which was previously owned by SmartStop, was sold to an entity controlled by H. Michael Schwartz, our Chairman of the Board of Directors and Chief Executive Officer, and became our Sponsor. The former executive management team of SmartStop continued to serve on the executive management team for our Sponsor. In addition, the majority of our management team at the time of the Merger continues to serve on our management team, as well as the management team of our Advisor and Property Manager. We have no employees. Our Advisor, a Delaware limited liability company, was formed on March 12, 2013. Our Advisor is responsible for managing our affairs on a day-to-day basis and identifying and making acquisitions and investments on our behalf under the terms of the advisory agreement we have with our Advisor (our “Advisory Agreement”). The majority of the officers of our Advisor are also officers of us and our Sponsor. Our Second Articles of Amendment and Restatement, as amended, authorize 350,000,000 shares of Class A common stock (“Class A Shares”), $0.001 par value per share and 350,000,000 shares of Class T common stock (“Class T Shares”), $0.001 par value per share and 200,000,000 shares of preferred stock with a par value of $0.001. On June 17, 2013, we commenced a private placement offering to accredited investors only for a maximum of $109.5 million in shares of common stock, including shares being offered pursuant to our distribution reinvestment plan (the “Private Offering”). On May 23, 2014, we satisfied the minimum offering requirements of $1 million from our Private Offering and commenced formal operations. We terminated the Private Offering on January 16, 2015. We raised gross offering proceeds of approximately $7.8 million from the issuance of approximately 830,000 shares pursuant to the Private Offering. On January 20, 2015, we commenced a public offering of a maximum of $1.0 billion in common shares for sale to the public (the “Primary Offering”) and $95.0 million in common shares for sale pursuant to our distribution reinvestment plan (collectively, the “Public Offering”). The close down of our Primary Offering occurred on March 31, 2017. We sold approximately 17.9 million Class A Shares and approximately 7.5 million Class T Shares for approximately $193 million and $79 million respectively, in our Public Offering. On May 5, 2017, we filed with the SEC a Registration Statement on Form S-3, which registered up to an additional $115.6 million in shares under our distribution reinvestment plan (our “DRP Offering”). As of September 30, 2018, we had sold approximately 480,000 Class A Shares and approximately 152,000 Class T Shares for approximately $5.5 million and $1.8 million, respectively, in our DRP Offering. On August 10, 2018, the board of directors (the “Board”) approved the suspension of our DRP Offering and share redemption program. On April 19, 2018, our Board, upon recommendation of our Nominating and Corporate Governance Committee, approved an estimated value per share of our common stock of $11.58 for our Class A Shares and Class T Shares based on the estimated value of our assets less the estimated value of our liabilities, or net asset value, divided by the number of shares outstanding on a fully diluted basis, calculated as of December 31, 2017. As a result of the calculation of our estimated value per share, effective in May 2018, shares sold pursuant to our DRP Offering (prior to the suspension of such offering noted above) were sold at the estimated value per share of our common stock of $11.58 per share for Class A Shares and Class T Shares. Our operating partnership, SS Growth Operating Partnership, L.P., a Delaware limited partnership (our “Operating Partnership”), was formed on March 13, 2013. During 2013, our Advisor purchased a limited partnership interest in our Operating Partnership totaling $201,000 and on May 31, 2013, we contributed the initial $1,000 capital contribution we received to our Operating Partnership in exchange for the general partner interest. Our Operating Partnership owns, directly or indirectly through one or more special purpose entities, all of the self storage properties that we acquire. As of September 30, 2018, we owned approximately 99.9% of the common units of limited partnership interests of our Operating Partnership. The remaining approximately 0.1% of the common units are owned by our Advisor. As the sole general partner of our Operating Partnership, we have the exclusive power to manage and conduct the business of our Operating Partnership. We conduct certain activities through our taxable REIT subsidiary, SS Growth TRS, Inc., a Delaware corporation (the “TRS”) which was formed on March 14, 2013, and is a wholly owned subsidiary of our Operating Partnership. Our Property Manager was formed on March 12, 2013 to manage our properties. Our Property Manager derives substantially all of its income from the property management services it performs for us. Our Property Manager may enter into sub-property management agreements with third party management companies and pay part of its management fee to such sub-property manager. From October 1, 2015 through September 30, 2017, our Property Manager contracted with Extra Space Storage, Inc. (“Extra Space”) for Extra Space to serve as the sub-property manager for each of our properties located in the United States pursuant to separate sub-property management agreements for each property. On October 1, 2017, our Property Manager terminated each sub-property management agreement with Extra Space and our Property Manager now manages all of our properties directly. In connection therewith an affiliate of our Property Manager acquired the “SmartStop® Self Storage” brand from Extra Space. We began using the “SmartStop® Self Storage” brand at our United States properties effective October 1, 2017. Please see Note 7 – Related Party Transactions Property Management Agreement All properties owned or acquired in Canada will be managed by a subsidiary of our Sponsor and are branded using the SmartStop ® Our dealer manager is Select Capital Corporation, a California corporation (our “Dealer Manager”). Our Dealer Manager was responsible for marketing our shares being offered pursuant to our Primary Offering. Our Sponsor owns a 15% non-voting equity interest in our Dealer Manager. Affiliates of our Dealer Manager own a 2.5% non-voting membership interest in our Advisor. Our Sponsor owns 100% of the membership interests of Strategic Transfer Agent Services, LLC, our transfer agent (our “Transfer Agent”). On May 31, 2018, the Company executed a transfer agent agreement (the “Transfer Agent Agreement”), with our Transfer Agent. Our Transfer Agent provides transfer agent and registrar services to us that are substantially similar to what a third party transfer agent would provide in the ordinary course of performing its functions as a transfer agent. Our Transfer Agent may retain and supervise third party vendors in its efforts to administer certain services. As we accepted subscriptions for shares of our common stock, we transferred the net offering proceeds to our Operating Partnership as capital contributions in exchange for additional units of interest in our Operating Partnership. However, we were deemed to have made capital contributions in the amount of gross proceeds received from investors, and our Operating Partnership was deemed to have simultaneously paid the sales commissions and other costs associated with the Public Offering. In addition, our Operating Partnership is structured to make distributions with respect to limited partnership units that are equivalent to the distributions made to holders of common stock. Finally, a limited partner in our Operating Partnership may later exchange his or her limited partnership units in our Operating Partnership for shares of our common stock at any time after one year following the date of issuance of their limited partnership units, subject to certain restrictions outlined in the limited partnership agreement of our Operating Partnership, as amended (the “Operating Partnership Agreement”). Our Advisor is prohibited from exchanging or otherwise transferring its limited partnership units so long as it is acting as our Advisor pursuant to our Advisory Agreement. As of September 30, 2018, we owned 28 self storage facilities located in 10 states (Arizona, California, Colorado, Florida, Illinois, Massachusetts, During the second quarter of 2018, our Board established a special committee comprised solely of its independent directors to conduct a review of strategic alternatives and address any potential conflicts of interest. As a result of this process, on October 1, 2018, we and our Operating Partnership entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Strategic Storage Trust II, Inc., a non-traded REIT sponsored by our Sponsor (“SST II”), Potential Merger

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC. Principles of Consolidation Our financial statements, and the financial statements of our Operating Partnership, including its wholly-owned subsidiaries, are consolidated in the accompanying consolidated financial statements. The portion of these consolidated entities not wholly-owned by us is presented as noncontrolling interests. All significant intercompany accounts and transactions have been eliminated in consolidation. Consolidation Considerations Current accounting guidance provides a framework for identifying a variable interest entity (“VIE”) and determining when a company should include the assets, liabilities, noncontrolling interests, and results of activities of a VIE in its consolidated financial statements. In general, a VIE is an entity or other legal structure used to conduct activities or hold assets that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. Generally, a VIE should be consolidated if a party with an ownership, contractual, or other financial interest in the VIE (a variable interest holder) has the power to direct the VIE’s most significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could be significant to the VIE. A variable interest holder that consolidates the VIE is called the primary beneficiary. Upon consolidation, the primary beneficiary generally must initially record all of the VIE’s assets, liabilities, and noncontrolling interest at fair value and subsequently account for the VIE as if it were consolidated based on majority voting interest. Our Operating Partnership is deemed to be a VIE and is consolidated by the Company as the primary beneficiary. As of December 31, 2017, we had not entered into any other contracts/interests that would be deemed to be variable interests in a VIE other than one preferred equity investment, which was accounted for under the equity method of accounting. As of September 30, 2018, such preferred equity investment had been redeemed, and the only other contract/interest that would be deemed to be variable interests in a VIE was our tenant insurance joint venture, which is accounted for using the equity method of accounting. For more information please see Note 9, Potential Acquisitions Noncontrolling Interest in Consolidated Entities We account for the noncontrolling interest in our Operating Partnership in accordance with the related accounting guidance. Due to our control through our general partnership interest in our Operating Partnership and the limited rights of the limited partner, our Operating Partnership, including its wholly-owned subsidiaries, are consolidated with the Company and the limited partner interest is reflected as a noncontrolling interest in the accompanying consolidated balance sheets. The noncontrolling interest shall be attributed its share of income and losses, even if that attribution results in a deficit noncontrolling interest balance. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management will adjust such estimates when facts and circumstances dictate. Actual results could materially differ from those estimates. The most significant estimates made include the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed at relative fair value, the determination if certain entities should be consolidated, the evaluation of potential impairment of long-lived assets, and the estimated useful lives of real estate assets and intangibles. Cash and Cash Equivalents We consider all short-term, highly liquid investments that are readily convertible to cash with a maturity of three months or less at the time of purchase to be cash equivalents. We may maintain cash and cash equivalents in financial institutions in excess of insured limits, but believe this risk will be mitigated by only investing in or through high quality financial institutions. Real Estate Purchase Price Allocation We account for acquisitions in accordance with GAAP which requires that we allocate the purchase price of a property to the tangible and intangible assets acquired and the liabilities assumed based on their relative fair values. This guidance requires us to make significant estimates and assumptions, including fair value estimates, which requires the use of significant unobservable inputs, as of the acquisition date. The value of the tangible assets, consisting of land and buildings, is determined as if vacant. Substantially all of the leases in place at acquired properties are at market rates, as the majority of the leases are month-to-month contracts. We also consider whether in-place, market leases represent an intangible asset. We recorded approximately $0.4 million and approximately $1.3 million in intangible assets to recognize the value of in-place leases related to our acquisitions during the nine months ended September 30, 2018 and the year ended December 31, 2017, respectively. We do not expect, nor to date have we recorded, intangible assets for the value of customer relationships because we expect we will not have concentrations of significant customers and the average customer turnover will be fairly frequent. Allocation of purchase price to acquisitions of facilities are allocated to the individual facilities based upon an income approach or a cash flow analysis using appropriate risk adjusted capitalization rates which take into account the relative size, age, and location of the individual facility along with current and projected occupancy and rental rate levels or appraised values, if available. In January 2017, the FASB issued Accounting Standards Update 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”). ASU 2017-01 clarifies the framework for determining whether an integrated set of assets and activities meets the definition of a business. The revised framework provides guidance for determining whether an integrated set of assets and activities is a business and narrows the definition of a business, which is expected to result in fewer transactions being accounted for as business combinations. Acquisitions of integrated sets of assets and activities that do not meet the definition of a business are accounted for as asset acquisitions. We adopted this ASU on January 1, 2018. We expect 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) or because the acquisition does not include a substantive process in the form of an acquired workforce or an acquired contract that cannot be replaced without significant cost, effort or delay. As a result, once an acquisition is deemed probable, transaction costs are capitalized rather than expensed. During the nine months ended September 30, 2018, we acquired four properties that did not meet the revised definition of a business, and we capitalized approximately $1.0 million of acquisition-related transaction costs that would have otherwise been expensed under the guidance in effect prior to January 1, 2018. During the three months ended September 30, 2018 and 2017, we expensed approximately $36,000 and approximately $1.5 million, respectively, of acquisition-related transaction costs that did not meet our capitalization criteria during the respective periods. During the nine months ended September 30, 2018 and 2017, we expensed approximately $0.3 million and approximately $2.9 million, respectively, of acquisition-related transaction costs that did not meet our capitalization criteria during the respective periods. Evaluation of Possible Impairment of Long-Lived Assets Management monitors events and changes in circumstances that could indicate that the carrying amounts of our long-lived assets may not be recoverable. When indicators of potential impairment are present that indicate that the carrying amounts of the assets may not be recoverable, we will assess the recoverability of the assets by determining whether the carrying value of the long-lived assets will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we will adjust the value of the long-lived assets to the fair value and recognize an impairment loss. For the three and nine months ended September 30, 2018 and 2017, no impairment losses were recognized. Revenue Recognition Management believes that all of our leases are operating leases. Rental income is recognized in accordance with the terms of the leases, which generally are month-to-month. Revenues from any long-term operating leases are recognized on a straight-line basis over the term of the lease. The excess of rents received over amounts contractually due pursuant to the underlying leases is included in accounts payable and accrued liabilities in our consolidated balance sheets and contractually due but unpaid rent is included in other assets. Allowance for Doubtful Accounts Tenant accounts receivable is reported net of an allowance for doubtful accounts. Management’s estimate of the allowance is based upon a review of the current status of tenant accounts receivable. It is reasonably possible that management’s estimate of the allowance will change in the future. Real Estate Facilities Real estate facilities are recorded based upon relative fair values as of the date of acquisition. We capitalize costs incurred to develop, construct, renovate and improve properties, including interest and property taxes incurred during the construction period. The construction period begins when expenditures for the real estate assets have been made and activities that are necessary to prepare the asset for its intended use are in progress. The construction period ends when the asset is substantially complete and ready for its intended use. Depreciation of Real Property Assets Our management is required to make subjective assessments as to the useful lives of our depreciable assets. We consider the period of future benefit of the asset to determine the appropriate useful lives. Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives as follows: Description Standard Depreciable Life Land Not Depreciated Buildings 30-35 years Site Improvements 7-10 years Depreciation of Personal Property Assets Personal property assets consist primarily of furniture, fixtures and equipment and are depreciated on a straight-line basis over the estimated useful lives generally ranging from 3 to 5 years, and are included in other assets on our consolidated balance sheets. Intangible Assets We have allocated a portion of our real estate purchase price to in-place lease intangibles. We are amortizing in-place lease intangibles on a straight-line basis over the estimated future benefit period. As of September 30, 2018 and December 31, 2017, the gross amounts allocated to in-place lease intangibles were approximately $4.4 million and $4.1 million, respectively, and accumulated amortization of in-place lease intangibles totaled approximately $3.9 million and $3.2 million, respectively. The total future estimated amortization expense of intangible assets for the years ending December 31, 2018 and 2019 is approximately $0.2 million and $0.3 million, respectively, and none for the years thereafter. Foreign Currency Translation For non-U.S. functional currency operations, assets and liabilities are translated to U.S. dollars at current exchange rates. Revenues and expenses are translated at the average rates for the period. All related adjustments are recorded in accumulated other comprehensive income (loss) as a separate component of equity. Transactions denominated in a currency other than the functional currency of the related operation are recorded at rates of exchange in effect at the date of the transaction. Gains or losses on foreign currency transactions are recorded in other income (expense). Debt Issuance Costs The net carrying value of costs incurred in connection with obtaining revolving financing are presented in debt issuance costs on our consolidated balance sheets and such net amounts as of September 30, 2018 and December 31, 2017 totaled approximately $0.1 million and $0.5 million, respectively. The net carrying value of costs incurred in connection with obtaining non-revolving financing are presented in our consolidated balance sheets as a deduction from secured debt and such amounts as of September 30, 2018 and December 31, 2017 totaled approximately $0.2 million and $0.3 million, respectively. Debt issuance costs are amortized on a straight-line basis over the term of the related loan, which is not materially different than the effective interest method. Organization and Offering Costs We pay our Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. We will cease paying the stockholder servicing fee with respect to the Class T Shares sold in the Primary Offering at the earlier of (i) the date we list our shares on a national securities exchange, merge or consolidate with or into another entity, or sell or dispose of all or substantially all of our assets, (ii) the date at which the aggregate underwriting compensation from all sources equals 10% of the gross proceeds from the sale of both Class A Shares and Class T Shares in our Primary Offering (i.e., excluding proceeds from sales pursuant to our distribution reinvestment plan), which calculation shall be made by us with the assistance of our Dealer Manager commencing after the termination of the Primary Offering; (iii) the fifth anniversary of the last day of the fiscal quarter in which our Primary Offering (i.e., excluding our distribution reinvestment plan offering) terminates; and (iv) the date that such Class T Share is redeemed or is no longer outstanding. Our Dealer Manager entered into participating dealer agreements with certain other broker-dealers which authorized them to sell our shares. Upon sale of our shares by such broker-dealers, our Dealer Manager re-allowed all of the sales commissions and, subject to certain limitations, the stockholder servicing fees paid in connection with sales made by these broker-dealers. Our Dealer Manager was also permitted to re-allow to these broker-dealers a portion of their dealer manager fee as marketing fees, reimbursement of certain costs and expenses of attending training and education meetings sponsored by our Dealer Manager, payment of attendance fees required for employees of our Dealer Manager or other affiliates to attend retail seminars and public seminars sponsored by these broker-dealers, or to defray other distribution-related expenses. Our Dealer Manager also received reimbursement of bona fide due diligence expenses; however, to the extent the due diligence expenses could not be justified, any excess over actual due diligence expenses would have been considered underwriting compensation subject to a 10% FINRA limitation and, when aggregated with all other non-accountable expenses in connection with our Public Offering, could not exceed 3% of gross offering proceeds from sales in the Public Offering. We record a liability within Due to affiliates for the future estimated stockholder servicing fees at the time of sale of Class T Shares as an offering cost. Redeemable Common Stock and Distribution Reinvestment Plan We previously adopted a share redemption program that enabled stockholders to sell their shares to us in limited circumstances. However, this program has been suspended, as discussed in Note 8 below. We record amounts that are redeemable under the share redemption program as redeemable common stock in the accompanying consolidated balance sheets since the shares are redeemable by the holder pursuant to the share redemption program. The maximum amount redeemable under our share redemption program is limited to the number of shares we can repurchase with the amount of the net proceeds from the sale of shares under the distribution reinvestment plan. However, accounting guidance states that determinable amounts that can become redeemable should be presented as redeemable when such amount is known. Therefore, the net proceeds from the distribution reinvestment plan are considered to be temporary equity and are presented as redeemable common stock in the accompanying consolidated balance sheets. In addition, current accounting guidance requires, among other things, that financial instruments that represent a mandatory obligation of us to repurchase shares be classified as liabilities and reported at settlement value. Our redeemable common shares are contingently redeemable by the holder pursuant to the share redemption program. When we determine we have a mandatory obligation to repurchase shares under the share redemption program, we reclassify such obligations from temporary equity to a liability based upon their respective settlement values. For the six months ended June 30, 2018, we received quarterly redemption requests totaling approximately 145,000 shares and approximately $1.4 million. Such requests were fulfilled in April and July 2018. Due to the suspension of our share redemption program, no shares were redeemed for the three months ended September 30, 2018. For the year ended December 31, 2017, we received redemption requests totaling approximately 22,000 shares and approximately $211,000. Such requests were fulfilled in April, July, and October 2017 and January 2018. Accounting for Equity Awards The cost of restricted stock is required to be measured based on the grant date fair value and the cost recognized over the relevant service period. Fair Value Measurements Under GAAP, we are required to measure certain financial instruments at fair value on a recurring basis. In addition, we are required to measure other financial instruments and balances at fair value on a non-recurring basis. Fair value is defined by the accounting standard for fair value measurements and disclosures as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels. The following summarizes the three levels of inputs and hierarchy of fair value we use when measuring fair value: • Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access; • Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as interest rates and yield curves that are observable at commonly quoted intervals; and • Level 3 inputs are unobservable inputs for the assets or liabilities that are typically based on an entity’s own assumptions as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the fair value measurement will fall within the lowest level that is significant to the fair value measurement in its entirety. The accounting guidance for fair value measurements and disclosures provides a framework for measuring fair value and establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In determining fair value, we will utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment will be necessary to interpret Level 2 and 3 inputs in determining fair value of our financial and non-financial assets and liabilities. Accordingly, there can be no assurance that the fair values we will present will be indicative of amounts that may ultimately be realized upon sale or other disposition of these assets. Financial and non-financial assets and liabilities measured at fair value on a non-recurring basis in our consolidated financial statements consist of real estate and related liabilities assumed related to our acquisitions. The fair values of these assets and liabilities were determined as of the acquisition dates using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity. In general, we consider multiple valuation techniques when measuring fair values. However, in certain circumstances, a single valuation technique may be appropriate. All of the fair values of the assets and liabilities as of the acquisition dates were derived using Level 3 inputs. The carrying amounts of cash and cash equivalents, tenant accounts receivable, other assets, variable-rate secured debt, accounts payable and accrued liabilities, distributions payable and amounts due to affiliates approximate fair value. To comply with GAAP, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of derivative contracts for the effect of nonperformance risk, we will consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. We had no assets or liabilities that required fair value measurements on a recurring basis at September 30, 2018 and December 31, 2017. Income Taxes We made an election to be taxed as a Real Estate Investment Trust (“REIT”), under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the “Code”), commencing with our taxable year ended December 31, 2014. To qualify as a REIT, we must continue to meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the REIT’s ordinary taxable income to stockholders (which is computed without regard to the dividends paid deduction or net capital gains and which does not necessarily equal net income as calculated in accordance with GAAP). As a REIT, we generally will not be subject to federal income tax on taxable income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we will then be subject to federal income taxes on our taxable income at regular corporate rates and will not be permitted to qualify for treatment as a REIT for federal income tax purposes for four years following the year during which qualification is lost unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. Even if we continue to qualify for taxation as a REIT, we may be subject to certain state and local taxes on our income and property, and federal income and excise taxes on our undistributed income. We filed elections to treat our TRS as a taxable REIT subsidiary effective January 1, 2014. In general, the TRS performs additional services for our customers and generally engages in any real estate or non-real estate related business. The TRS is subject to corporate federal and state income tax. The TRS follows accounting guidance which requires the use of the asset and liability method. Deferred income taxes represent the tax effect of future differences between the book and tax bases of assets and liabilities. Per Share Data Basic earnings per share attributable to our common stockholders for all periods presented is computed by dividing net income (loss) attributable to our common stockholders by the weighted average number of shares outstanding during the period, excluding unvested restricted stock. Diluted earnings per share is computed by including the dilutive effect of unvested restricted stock, utilizing the treasury stock method. For all periods presented the dilutive effect of unrestricted stock was not included in the diluted weighted average shares as such shares were antidilutive. Recently Issued Accounting Guidance In May 2014, the FASB issued ASU 2014-09 “Revenue from Contracts with Customers” as ASC Topic 606. The objective of ASU 2014-09 is to establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and will supersede most of the existing revenue recognition guidance, including industry-specific guidance. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the new standard, companies will perform a five-step analysis of transactions to determine when and how revenue is recognized. ASU 2014-09 applies to all contracts with customers except those that are within the scope of other topics in the FASB ASC. This ASU was applied using the modified retrospective approach. We have determined that our self storage rental revenues are not subject to the guidance in ASU 2014-09, as they qualify as lease contracts, which are excluded from its scope. We adopted this ASU on January 1, 2018 and its adoption did not have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 amends the guidance on accounting for leases. Under ASU 2016-02, lessees will be required to recognize the following for all leases (with the exception of short term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under ASU 2016-02, lessor accounting is largely unchanged. It also includes extensive amendments to the disclosure requirements. ASU 2016-02 is effective for fiscal years and interim periods beginning after December 15, 2018. Early adoption is permitted for financial statements that have not yet been made available for issuance. ASU 2016-02 requires a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. While we continue to evaluate the standard, based upon our assessment to date, we do not anticipate the adoption of this standard will have a material impact on our consolidated financial statements, because substantially all of our lease revenues are derived from month-to-month leases.

Potential Merger

Potential Merger	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Potential Merger	Note 3. Potential Merger On October 1, 2018, we, our Operating Partnership, SST II, SST II OP, and Merger Sub entered into the Merger Agreement in connection with the Mergers, whereby, subject to the go-shop provision described in further detail below, upon closing of the Mergers, each holder of our common stock will be entitled to receive $12.00 per share in cash and each holder of units of partnership interest in our Operating Partnership will be entitled to receive 1.127 units of partnership interest in SST II OP. Pursuant to the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the REIT Merger (the “REIT Merger Effective Time”), each share of our common stock, par value $0.001 per share, outstanding immediately prior to the REIT Merger Effective Time (other than shares owned by us and our subsidiaries or SST II and its subsidiaries) will be automatically converted into the right to receive an amount in cash equal to $12.00, without interest and less any applicable withholding taxes (the “Merger Consideration”). Immediately prior to the REIT Merger Effective Time, all shares of our common stock that are subject to vesting and other restrictions will become fully vested and non-forfeitable and, at the REIT Merger Effective Time, will be converted into the right to receive the Merger Consideration. At the effective time of the Partnership Merger, each outstanding unit of partnership interest in our Operating Partnership will be converted automatically into 1.127 units of partnership interest in SST II OP. The Merger Agreement contains customary representations, warranties and covenants. The closing of the REIT Merger is subject to the approval of the REIT Merger by the affirmative vote of the holders of shares entitled to cast a majority of all the votes entitled to be cast on the matter as of the record date for the special meeting of our stockholders. The closing of the Mergers is also subject to various customary conditions. The closing of the REIT Merger is neither subject to a financing condition nor to the approval of SST II’s stockholders. The Merger Agreement prohibits us and our subsidiaries and representatives from soliciting, providing information or entering into discussions concerning proposals relating to alternative business combination transactions, subject to certain limited exceptions. However, under the terms of the Merger Agreement, during the period beginning on the date of the Merger Agreement and continuing until 11:59 p.m. New York City time on November 15, 2018 (the “Go Shop Period End Time”), we (through the special committee of our board of directors and its representatives) may initiate, solicit, provide information and enter into discussions concerning proposals relating to alternative business combination transactions. For up to five business days after the Go Shop Period End Time, we may continue to participate in such discussions with a Go Shop Bidder (as defined in the Merger Agreement) and may, subject to certain conditions set forth in the Merger Agreement regarding the proposal made by such Go Shop Bidder, terminate the Merger Agreement and enter into an agreement with a Go Shop Bidder with respect to the proposal made by such Go Shop Bidder. The Merger Agreement also provides that, at any time beginning on the sixth business day after the Go Shop Period End Time and prior to receipt of the approval of our stockholders, our Board may, in certain circumstances, make an Adverse Recommendation Change (as such term is defined in the Merger Agreement) and terminate the Merger Agreement, subject to complying with certain conditions set forth in the Merger Agreement. In connection with the termination of the Merger Agreement and our entry into an alternative transaction with respect to a superior proposal, as well as under other specified circumstances, we will be required to pay to SST II a termination fee of $2.9 million in the event of termination on or prior to the fifth business day following the Go Shop Period End Time, or $9.6 million in the event of termination thereafter. In addition, the Merger Agreement provides for customary expense reimbursement under specified circumstances set forth in the Merger Agreement. The Merger Agreement also provides that SST II will be required to pay us a reverse termination fee of $9.6 million under specified circumstances set forth in the Merger Agreement related to the failure by SST II to consummate the Closing. We expect our stockholders meeting to occur in the first quarter of 2019 and, if the REIT Merger is approved by the stockholders, we expect the Mergers to close shortly thereafter. However, there is no guarantee that the Mergers will be consummated. If the Mergers are consummated, our Advisor will also be entitled to receive, pursuant to arrangements separate and distinct from the Merger Agreement, a disposition fee and a subordinated distribution in connection with the Advisor’s special limited partnership interest in our Operating Partnership. See Note 7, Related Party Transactions

Real Estate Facilities

Real Estate Facilities	9 Months Ended
	Sep. 30, 2018
Real Estate [Abstract]
Real Estate Facilities	Note 4. Real Estate Facilities The following summarizes the activity in real estate facilities during the nine months ended September 30, 2018: Real estate facilities Balance at December 31, 2017 $ 176,360,865 Facility acquisitions 51,500,667 Construction in process placed in service (1) 11,301,512 Impact of foreign exchange rate changes (112,584 ) Improvements and additions 512,011 Balance at September 30, 2018 $ 239,562,471 Accumulated depreciation Balance at December 31, 2017 $ (7,052,779 ) Depreciation expense (4,594,771 ) Balance at September 30, 2018 $ (11,647,550 ) (1) Construction on the first phase of our Asheville I facility was completed and the facility opened on March 22, 2018. Construction on the Stoney Creek facility was completed and the facility opened on May 31, 2018. The following table summarizes the purchase price allocations and occupancy information for our acquisitions during the nine months ended September 30, 2018: Property Acquisition Date Real Estate Assets Intangibles Total (1) Debt Issued 2018 Revenue (2) 2018 Property Operating Income (Loss) (2)(3) Initial Occupancy Occupancy at September 30, 2018 Pembroke Pines – FL 02/01/18 $ 16,005,449 $ — $ 16,005,449 $ — $ 133,308 $ (93,944 ) 0 % 40 % Riverview – FL 02/21/18 7,946,391 — 7,946,391 — 120,886 (109,855 ) 0 % 52 % Eastlake – CA 03/09/18 17,342,483 — 17,342,483 — 146,842 (134,333 ) 0 % 34 % McKinney – TX 05/01/18 10,206,344 395,000 10,601,344 — 367,979 199,622 78 % 89 % Total (4) $ 51,500,667 $ 395,000 $ 51,895,667 $ — $ 769,015 $ (138,510 ) (1) The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent cash paid for the property and capitalized acquisition costs. (2) The operating results of the facilities acquired above have been included in our consolidated statement of operations since their respective acquisition date. (3) Property operating loss excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses. We incurred acquisition fees to our Advisor related to the above properties of approximately $0.9 million for the nine months ended September 30, 2018, which were capitalized into the cost basis of the properties.

Pro Forma Consolidated Financia

Pro Forma Consolidated Financial Information	9 Months Ended
	Sep. 30, 2018
Text Block [Abstract]
Pro Forma Consolidated Financial Information	Note 5. Pro Forma Consolidated Financial Information The table set forth below summarizes, on a pro forma basis, the results of operations of the Company for the nine months ended September 30, 2018 and 2017. Such presentation reflects the Company’s acquisitions that occurred during 2018 and 2017, which met the GAAP definition of a business in effect at that time, as if the acquisitions had occurred as of January 1, 2017 and 2016, respectively. As none of the Company’s acquisitions that were completed during the nine months ended September 30, 2018 met the revised definition of a business, no adjustments for these acquisitions have been reflected in the pro forma information below. However, for acquisitions of lease-up properties that were not operational as of these dates, the pro forma information includes these acquisitions as of the date that formal operations began. This pro forma information does not purport to represent what the actual consolidated results of operations of the Company would have been for the periods indicated, nor does it purport to predict the results of operations for future periods. For the nine months ended September 30, 2018 September 30, 2017 Pro forma revenue $ 14,369,493 $ 11,816,396 Pro forma operating expenses $ (15,788,997 ) $ (12,899,938 ) Pro forma net loss attributable to common stockholders $ (2,096,047 ) $ (1,245,904 ) The pro forma consolidated financial information for the nine months ended September 30, 2018 and 2017 were adjusted to exclude none and approximately $1.8 million, respectively, for acquisition related expenses.

Secured Debt

Secured Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Secured Debt	Note 6. Secured Debt KeyBank Facility On July 31, 2014, we, through our Operating Partnership and certain property-owning special purpose entities wholly-owned by our Operating Partnership (collectively with the Operating Partnership, the “Borrower”), obtained a senior secured revolving loan (the “KeyBank Facility”) from KeyBank National Association (“KeyBank”) pursuant to a credit agreement for the purpose of funding real property acquisitions. The KeyBank Facility was full recourse, jointly and severally, to us and the Borrower and was secured by cross-collateralized first mortgage liens on the 13 Mortgaged Properties (as defined in the Credit Agreement). The KeyBank Facility accrued interest at the Borrower’s option of either (i) LIBOR plus 325 basis points, or (ii) Base Rate plus 225 basis points. Base Rate was the greater of (i) Agent Prime or (ii) the Fed Funds rate plus 0.50%. Additionally, an unused line fee of 25 basis points was assessed on the average daily unused amount of the maximum potential amount we may borrow. The KeyBank Facility contained a number of other customary terms and covenants. On December 20, 2017, we entered into a new credit agreement (the “Amended Credit Agreement”) with KeyBank and obtained a new senior secured revolving loan (the “Amended KeyBank Facility”) which has a term of one year, maturing on December 20, 2018. See Note 12, Subsequent Events Payments due pursuant to the Amended KeyBank Facility are interest-only for the one year term. The Amended KeyBank Facility bears interest at the Borrower’s option of either (i) LIBOR plus 225 basis points, or (ii) Base Rate plus 125 basis points. Base Rate is the greater of (i) Agent Prime or (ii) the Fed Funds rate plus 0.50%. Additionally, an unused line fee of 25 or 20 basis points is assessed on the average daily unused amount of the maximum potential amount we may borrow if the unused maximum potential amount is greater than or equal to 50% or less than 50%, respectively. As of September 30, 2018, the applicable interest rate was approximately 4.35% which was based on LIBOR plus 225 basis points. The Amended KeyBank Facility is full recourse, jointly and severally, to us and the Borrower and is secured by cross-collateralized first mortgage liens on the 14 Mortgaged Properties (as defined in the Amended Credit Agreement). The Amended KeyBank Facility may be prepaid or terminated at any time without penalty, provided, however, that KeyBank shall be indemnified for any breakage costs associated with any LIBOR borrowings. Pursuant to that certain guaranty dated December 20, 2017, in favor of KeyBank, we serve as a guarantor of all obligations due under the KeyBank Facility. Under certain conditions, we may cause the release of one or more of the properties serving as collateral for the Amended KeyBank Facility, subject to a requirement that no default or event of default is then outstanding or would reasonably occur as a result of such release, including compliance with the Pool Debt Yield Ratio (as defined in the Amended Credit Agreement). The Amended KeyBank Facility contains a number of other customary terms and covenants, including the following (capitalized terms are as defined in the Amended Credit Agreement): the aggregate borrowing base availability under the Amended KeyBank Facility is limited to the lesser of: (1) 45% of the Pool Value of the properties in the collateral pool, or (2) an amount that would provide a minimum Pool Debt Yield Ratio of no less than 12%; and we must meet the following financial tests, calculated as of the close of each fiscal quarter: (1) a Total Leverage Ratio of no more than 40%; (2) a Tangible Net Worth not less than (a) the Tangible Net Worth at closing, plus (b) 85% of Net Equity Proceeds; (3) a Fixed Charge Ratio of no less than 1.5 to 1.0; (4) a Minimum Liquidity amount of at least $3 million; (5) any time when either (i) the Total Leverage Ratio is in excess of 25%, or (ii) the Fixed Charge Ratio is less than 3.5 to 1.0, a ratio of (a) the Indebtedness that bears interest at a varying rate of interest or that does not have the interest rate fixed, capped or swapped pursuant to a Hedging Agreement to (b) the sum of the Indebtedness, not in excess of 30%; and (6) a Loan to Value Ratio of not greater than forty-five percent (45%). As of September 30, 2018, we were in compliance with all these aforementioned covenants. As of September 30, 2018, $9.0 million was outstanding on the Amended KeyBank Facility. The Baseline Loan On May 26, 2016, the special-purpose entity (a subsidiary of our Operating Partnership) which acquired and owns our property in Phoenix, Arizona (the “Baseline Property”) entered into a loan agreement for a loan in the amount of approximately $5.1 million (the “Baseline Loan”) with TCF National Bank (“TCF”) as the lender. The Baseline Loan had a maturity date of May 26, 2019, unless extended for up to an additional three years. Payments due under the Baseline Loan were interest-only and were due on the first day of each month. The Baseline Loan had a variable interest rate, which adjusted monthly to be equal to 2.75% in excess of the LIBOR Rate (as defined in the Baseline Loan agreement), subject to a minimum rate of 3.25% per annum. The Baseline Loan was secured by a first lien deed of trust on the Baseline Property. We could prepay the Baseline Loan at any time, without penalty, in whole or in part. Pursuant to that certain guaranty, dated May 26, 2016, in favor of TCF, we provided a guaranty of the Baseline Loan. The Baseline Loan was paid in full in January 2018. The Torbarrie Loan In connection with the redevelopment of one of our properties in Toronto, Canada (the “Torbarrie Property”), on November 3, 2016, we, through a subsidiary of our Operating Partnership which acquired and owns the Torbarrie Property, entered into a construction loan agreement (the “Torbarrie Loan”) with First National Financial LP (“First National”) which, as amended, allows for borrowings up to approximately $10.3 million CAD. The Torbarrie Loan has a maturity date of September 1, 2021. Payments due under the Torbarrie Loan are initially interest-only and due in arrears on the first day of each month. The Torbarrie Loan will require principal amortization upon achieving a debt service coverage ratio of 1.10 (as defined in the loan agreement for the Torbarrie Loan), at which time principal will be due and payable based on a 25 year amortization period. The Torbarrie Loan bears interest at a variable interest rate of 1.95% in excess of the variable Royal Bank of Canada Prime Rate (as defined in the loan agreement for the Torbarrie Loan), which was approximately 3.7% as of September 30, 2018 (in no event will the interest rate fall below 4.65% per annum). The Torbarrie Loan is secured by a first lien deed of trust on the Torbarrie Property and all improvements thereto, and is cross-collateralized to the Stoney Creek Property. The Torbarrie Loan may be prepaid at any time, without penalty, in whole but not in part. We are the guarantor under the Torbarrie Loan and the loan agreement for the Torbarrie Loan contains a number of other customary terms and covenants. As of September 30, 2018, no amounts were drawn on the Torbarrie Loan. The Stoney Creek Loan On May 3, 2017, a subsidiary of our Operating Partnership which owns our property in the Stoney Creek area of Toronto, Canada (the “Stoney Creek Property”) entered into a construction loan agreement (the “Stoney Creek Loan”) with First National which, as amended, allows for borrowings up to approximately $7.8 million CAD. The Stoney Creek Loan has a maturity date of October 1, 2021. Payments due under the Stoney Creek Loan are initially interest-only and due in arrears on the first day of each month. The Stoney Creek Loan will require principal amortization upon achieving a debt service coverage ratio of 1.10 (as defined in the Stoney Creek loan agreement), at which time principal will be due and payable based on a 25 year amortization period. The Stoney Creek Loan will bear interest at a variable interest rate of 1.95% in excess of the variable Royal Bank of Canada Prime Rate (as defined in the Stoney Creek loan agreement), which was approximately 3.7% as of September 30, 2018 (in no event will the interest rate fall below 4.65% per annum). The Stoney Creek Loan is secured by a first lien deed of trust on the Stoney Creek Property and is cross-collateralized to the Torbarrie Property. The Stoney Creek Loan may be prepaid at any time, without penalty, in whole but not in part. We are the guarantor under the Stoney Creek Loan and the loan agreement for the Stoney Creek Loan contains a number of other customary terms and covenants. As of September 30, 2018, the equivalent of approximately $4.1 million USD was drawn on the Stoney Creek Loan. Future Principal Requirements The following table presents the future principal payment requirements on outstanding secured debt as of September 30, 2018: 2018 $ — 2019 9,000,000 (1) 2020 — 2021 4,092,474 2022 — 2023 and thereafter — Total payments 13,092,474 Non-revolving debt issuance costs, net (219,046 ) Total $ 12,873,428 (1) Such amount is outstanding under the Amended KeyBank Facility. Subsequent to September 30, 2018 the maturity was extended to February 18, 2019.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Note 7. Related Party Transactions Fees to Affiliates Our Advisory Agreement with our Advisor and dealer manager agreement (“Dealer Manager Agreement”) with our Dealer Manager entitle our Advisor and our Dealer Manager to specified fees upon the provision of certain services with regard to the investment of funds in real estate properties, among other services, as well as reimbursement for organizational and offering costs incurred by our Advisor on our behalf and reimbursement of certain costs and expenses incurred by our Advisor in providing services to us. Organization and Offering Costs Organization and offering costs incurred in connection with the Primary Offering consisted of all expenses (other than sales commissions, dealer manager fees and stockholder servicing fees) to be paid by us in connection with the Primary Offering, including our legal, accounting, printing, mailing and filing fees, charges of our escrow account holder and other accountable organization and offering expenses, including, but not limited to, (i) amounts to reimburse our Advisor for all marketing related costs and expenses such as salaries and direct expenses of employees of our Advisor and its affiliates in connection with registering and marketing our shares; (ii) technology costs associated with the Primary Offering; (iii) our costs of conducting our training and education meetings; (iv) our costs of attending retail seminars conducted by participating broker-dealers; and (v) payment or reimbursement of bona fide due diligence expenses. Pursuant to the Advisory Agreement, our Advisor was obligated to reimburse us within 60 days after the end of the month which the Primary Offering terminates to the extent we paid or reimbursed organization and offering costs (excluding sales commissions, dealer manager fees and stockholder servicing fees) in excess of 3.5% of the gross offering proceeds from the Primary Offering. However, subsequent to the close down of our Primary Offering, we determined that total of such organization and offering costs did not exceed 3.5% of the gross proceeds received from the Primary Offering, and thus there was no reimbursement. Advisory Agreement We do not have any employees. Our Advisor is primarily responsible for managing our business affairs and carrying out the directives of our Board. Our Advisor receives various fees and expenses under the terms of our Advisory Agreement. As discussed above, we were required under our Advisory Agreement to reimburse our Advisor for organization and offering costs. The Advisory Agreement also requires our Advisor to reimburse us to the extent that offering expenses, including sales commissions, dealer manager fees, stockholder servicing fees and organization and offering expenses, are in excess of 15% of gross proceeds from the Public Offering. Subsequent to the close down of our Primary Offering, we determined offering expenses were not in excess of 15% of gross proceeds from the Offering. Pursuant to the Advisory Agreement, our Advisor receives acquisition fees equal to 1.75% of the contract purchase price of each property we acquire plus reimbursement of any acquisition expenses incurred by our Advisor. Our Advisor also receives a monthly asset management fee equal to 0.04167%, which is one-twelfth of 0.5%, of our average invested assets, as defined in the Advisory Agreement. We also pay our Advisor a financing fee of up to 0.5% of the borrowed amount of a loan for arranging for financing in connection with the acquisition, development or repositioning of our properties. Our Advisor may reallow a portion of the financing fee to a third party in the event such party assists us in arranging such financing. Under our Advisory Agreement, our Advisor receives disposition fees in an amount equal to the lesser of (i) one-half of the competitive real estate commission or (ii) 1% of the contract sale price for each property we sell, as long as our Advisor provides substantial assistance in connection with the sale. As provided under the Advisory Agreement, the total real estate commissions paid (including the disposition fee paid to our Advisor) may not exceed the lesser of a competitive real estate commission or an amount equal to 6% of the contract sale price of the property. We also may pay our Advisor or its affiliate a market-based development fee some or all of which may be reallowed to a third party developer. The development fee is paid in connection with properties that we anticipate developing or expanding within 12 months of the acquisition of such properties. A development fee paid to a third party developer may take the form of an up-front fee and participation in a back-end performance fee. Our Advisor is also entitled to various subordinated distributions under the Operating Partnership Agreement if we (1) list our shares of common stock on a national exchange, (2) terminate our Advisory Agreement (other than a voluntary termination), (3) liquidate our portfolio, or (4) merge with another entity or enter into an Extraordinary Transaction, as defined in the Operating Partnership Agreement. Upon consummation of the Mergers described in Note 3, our Advisor will be entitled to receive a disposition fee pursuant to our Advisory Agreement of approximately $3.7 million. In addition, pursuant to the special limited partner interest held by our Advisor in our Operating Partnership, our Advisor will receive a subordinated distribution of approximately $4.0 million. Such subordinated distribution is payable in cash or units of limited partnership interests in our Operating Partnership. We expect our Advisor to elect to receive units of limited partnership interests in our Operating Partnership, which, pursuant to the terms of the Merger Agreement, would entitle our Advisor to receive 1.127 units of limited partnership interests in SST II Operating Partnership for each unit of limited partnership interest in our Operating Partnership upon the closing of the Mergers. Our Advisory Agreement provides for reimbursement of our Advisor’s direct and indirect costs of providing administrative and management services to us. Pursuant to the Advisory Agreement, our Advisor is obligated to pay or reimburse us the amount by which our aggregate annual operating expenses, as defined, exceed the greater of 2% of our average invested assets or 25% of our net income, as defined, unless a majority of our independent directors determine that such excess expenses were justified based on unusual and non-recurring factors. For any fiscal quarter for which total operating expenses for the 12 months then ended exceed the limitation, we will disclose this fact in our next quarterly report or within 60 days of the end of that quarter and send a written disclosure of this fact to our stockholders. In each case the disclosure will include an explanation of the factors that the independent directors considered in arriving at the conclusion that the excess expenses were justified. For the nine months ended September 30, 2018 and 2017, our aggregate annual operating expenses, as defined, did not exceed the thresholds described above. Dealer Manager Agreement In connection with our Primary Offering, our Dealer Manager received a sales commission of up to 7.0% of gross proceeds from sales of Class A Shares and up to 2.0% of gross proceeds from the sales of Class T Shares in the Primary Offering and a dealer manager fee of up to 3.0% of gross proceeds from sales of both Class A Shares and Class T Shares in the Primary Offering under the terms of the Dealer Manager Agreement. In addition, our Dealer Manager receives an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. We will cease paying the stockholder servicing fee with respect to the Class T Shares sold in the Primary Offering at the earlier of (i) the date we list our shares on a national securities exchange, merge or consolidate with or into another entity, or sell or dispose of all or substantially all of our assets, (ii) the date at which the aggregate underwriting compensation from all sources equals 10% of the gross proceeds from the sale of both Class A Shares and Class T Shares in our Primary Offering (i.e., excluding proceeds from sales pursuant to our DRP Offering), which calculation shall be made by us with the assistance of our Dealer Manager commencing after the termination of the Primary Offering; (iii) the fifth anniversary of the last day of the fiscal quarter in which our Primary Offering (i.e., excluding our DRP Offering offering) terminates; and (iv) the date that such Class T Share is redeemed or is no longer outstanding. Our Dealer Manager entered into participating dealer agreements with certain other broker-dealers which authorized them to sell our shares. Upon sale of our shares by such broker-dealers, our Dealer Manager re-allowed all of the sales commissions and, subject to certain limitations, the stockholder servicing fees paid in connection with sales made by these broker-dealers. Our Dealer Manager was also permitted to re-allow to these broker-dealers a portion of their dealer manager fee as marketing fees, reimbursement of certain costs and expenses of attending training and education meetings sponsored by our Dealer Manager, payment of attendance fees required for employees of our Dealer Manager or other affiliates to attend retail seminars and public seminars sponsored by these broker-dealers, or to defray other distribution-related expenses. Our Dealer Manager also received reimbursement of bona fide due diligence expenses; however, to the extent these due diligence expenses could not be justified, any excess over actual due diligence expenses would have been considered underwriting compensation subject to a 10% FINRA limitation and, when aggregated with all other non-accountable expenses in connection with our Public Offering, could not exceed 3% of gross offering proceeds from sales in the Public Offering. Affiliated Dealer Manager Our Sponsor owns a 15% non-voting equity interest in our Dealer Manager. Affiliates of our Dealer Manager own a 2.5% non-voting membership interest in our Advisor. Property Management Agreement Since inception, our Property Manager has served as the property manager for each of our properties pursuant to separate property management agreements. From October 1, 2015 through September 30, 2017, our Property Manager contracted with Extra Space for Extra Space to serve as the sub-property manager for each of our properties located in the United States pursuant to separate sub-property management agreements for each property. As of October 1, 2017, our Property Manager terminated each sub-property management agreement, and our Property Manager now manages all of our properties directly. In connection with these terminations, each property management agreement that was subject to a sub-property management agreement with Extra Space was amended and, where applicable, we paid Extra Space a termination fee, as described below. Prior Arrangement Under the property management agreements in effect from October 1, 2015 through September 30, 2017 for our properties located in the United States, our Property Manager received a monthly management fee for each property equal to the greater of $2,500 or 6% of the gross revenues, plus reimbursement of our Property Manager’s costs of managing the properties. In addition, Extra Space agreed to pay up to $25,000 per property toward the signage and set-up costs associated with converting such property to the Extra Space brand (the “Set-Up Amount”). The property management agreements had a three year term and automatically renewed for successive one year periods thereafter, unless we or our Property Manager provided prior written notice at least 90 days prior to the expiration of the term. In general, if we terminated a property management agreement without cause during the initial three year term, we would have been required to pay our Property Manager a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, we could have terminated a property management agreement on 30 days prior written notice without payment of a termination fee. Our Property Manager could have terminated a property management agreement on 60 days prior written notice to us. The sub-property management agreements between our Property Manager and Extra Space were substantially the same as the foregoing property management agreements. Under the sub-property management agreements, our Property Manager paid Extra Space a monthly management fee for each property equal to the greater of $2,500 or 6% of the gross revenues, plus reimbursement of Extra Space’s costs of managing the properties; provided, however that no management fee was due and payable to Extra Space for the months of January and July each year during the term. Extra Space had the exclusive right to offer tenant insurance to the tenants and was entitled to all of the benefits of such tenant insurance. The sub-property management agreements also had a three year term and automatically renewed for successive one year periods thereafter, unless our Property Manager or Extra Space provided prior written notice at least 90 days prior to the expiration of the term. In general, if our Property Manager terminated a sub-property management agreement without cause during the initial three year term, it would have been required to pay Extra Space a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, our Property Manager could have terminated a sub-property management agreement on 30 days prior written notice without payment of a termination fee. Extra Space could have terminated a sub-property management agreement on 60 days prior written notice to our Property Manager. Termination of Sub-property Manager As of October 1, 2017, our Property Manager terminated each sub-property management agreement with Extra Space, and we amended each of our corresponding property management agreements as described below. To the extent a termination fee would have been owed by any of our property-owning subsidiaries had its corresponding property management agreement with our Property Manager been terminated, each such property-owning subsidiary agreed to pay the termination fee owed by our Property Manager in accordance with its termination of the sub-property management agreements. The aggregate costs incurred in connection with the property management changes were approximately $0.2 million. This amount was included in property operating expenses – affiliates in the consolidated statements of operations for the year ended December 31, 2017. Property Management Subsequent to September 30, 2017 In connection with the termination of each sub-property management agreement, each corresponding property management agreement was amended effective as of October 1, 2017. Pursuant to the amended property management agreements, our Property Manager receives: (i) a monthly management fee for each property equal to the greater of $3,000 or 6% of the gross revenues from the properties plus reimbursement of the Property Manager’s costs of managing the properties and (ii) a construction management fee equal to 5% of the cost of construction or capital improvement work in excess of $10,000. In addition, we agreed with our Property Manager or an affiliate to share equally in the net revenue attributable to the sale of tenant insurance at our properties. The property management agreements have a three year term and automatically renew for successive three year periods thereafter, unless we or our Property Manager provide prior written notice at least 90 days prior to the expiration of the term. After the end of the initial three year term, either party may terminate a property management agreement generally upon 60 days prior written notice. With respect to each new property we acquire for which we enter into a property management agreement with our Property Manager we will also pay our Property Manager a one-time start-up fee in the amount of $3,750. In connection with the change in our property management operations, each of our stores in the United States were rebranded under the “SmartStop® Self Storage” brand. Transfer Agent Agreement Our Sponsor is the owner and manager of our Transfer Agent, which is a registered transfer agent with the SEC. Effective in June 2018, our Transfer Agent processes transactions in our shares, as well as provides customer service to our stockholders. These services include, among other things, processing payment of any sales commission and dealer manager fees associated with a particular purchase, as well as processing the distributions and any servicing fees with respect to our shares. Additionally, our Transfer Agent may retain and supervise third party vendors in its efforts to administer certain services. We believe that our Transfer Agent, through its knowledge and understanding of the direct participation program industry which includes non-traded REITs, is particularly suited to provide us with transfer agent and registrar services. Our Transfer Agent also conducts transfer agent and registrar services for other non-traded REITs sponsored by our Sponsor. It is the duty of our Board to evaluate the performance of our Transfer Agent. In connection with the engagement of our Transfer Agent, we paid a one-time initial setup fee of $50,000. In addition, the other fees to be paid to our Transfer Agent are based on a fixed quarterly fee, one-time account setup fees and monthly open account fees. In addition, we will reimburse our Transfer Agent for all reasonable expenses or other changes incurred by it in connection with the provision of its services to us, and we will pay our transfer agent fees for any additional services we may request from time to time, in accordance with its rates then in effect. Upon the request of our Transfer Agent, we may also advance payment for substantial reasonable out-of-pocket expenditures to be incurred by it. The initial term of the Transfer Agent Agreement is three years, which term will be automatically renewed for one year successive terms, but either party may terminate the Transfer Agent Agreement upon 90 days’ prior written notice. In the event that we terminate the Transfer Agent Agreement, other than for cause, we will pay our Transfer Agent all amounts that would have otherwise accrued during the remaining term of the Transfer Agent Agreement; provided, however, that when calculating the remaining months in the term for such purposes, such term is deemed to be a 12 month period starting from the date of the most recent annual anniversary date. Pursuant to the terms of the agreements described above, the following table summarizes related party costs incurred and paid by us for the year ended December 31, 2017 and the nine months ended September 30, 2018, as well as any related amounts payable as of December 31, 2017 and September 30, 2018: Year Ended December 31, 2017 Nine Months Ended September 30, 2018 Incurred Paid Payable Incurred Paid Payable Expensed Operating expenses (including organizational costs) $ 770,835 $ 723,044 $ 57,706 $ 1,004,092 $ 930,557 $ 131,241 Transfer Agent expenses — — — 140,033 136,246 3,787 Asset management fees 736,757 728,382 15,625 881,081 896,706 — Property management fees (1) 1,018,875 1,018,875 — 957,553 953,528 4,025 Acquisition costs 2,023,134 1,993,908 35,650 172,800 208,450 — Capitalized Debt issuance costs 3,983 3,983 — 61,722 61,722 — Acquisition costs 150,000 150,000 — 944,681 935,672 9,009 Additional Paid-in Capital Selling commissions 9,205,704 9,205,704 — — — — Dealer Manager fees 3,057,148 3,156,174 — — — — Stockholder servicing fees (2) 3,063,039 606,852 3,297,107 — 573,630 2,723,477 Offering costs 166,190 166,190 — — — — Total $ 20,195,665 $ 17,753,112 $ 3,406,088 $ 4,161,962 $ 4,696,511 $ 2,871,539 (1) During the year ended December 31, 2017, and nine months ended September 30, 2018, property management fees included approximately $926,000 and none, respectively, of fees paid to the sub-property manager of our properties. (2) The Company pays our Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. Extra Space Self Storage In connection with the merger of SmartStop Self Storage, Inc. into Extra Space, certain of our or our Advisor’s executive officers, including H. Michael Schwartz, Paula Mathews, Michael McClure and James Berg, received units of limited partnership interest in Extra Space Storage LP, the operating partnership for Extra Space, in exchange for units of limited partnership of SmartStop Self Storage Operating Partnership, L.P., the operating partnership for SmartStop, owned by such executives. Tenant Insurance We offer a tenant insurance plan to customers at our properties. In connection with the property management agreement amendments effective as of October 1, 2017, we agreed with our Property Manager or an affiliate to share equally in the net revenue attributable to the sale of tenant insurance at our properties. To facilitate such revenue sharing, we and an affiliate of our Property Manager agreed to transfer our respective rights in such tenant insurance revenue to a newly created joint venture in March of 2018, Strategic Storage TI Services GT JV, LLC (the “TI Joint Venture”), a Delaware limited liability company owned 50% by our TRS subsidiary and 50% by our Property Manager’s affiliate SmartStop TI GT, LLC (“SS TI GT”). Under the terms of the TI Joint Venture agreement, the TRS receives 50% of the net economics generated from such tenant insurance and SS TI GT will receive the other 50% of such net economics. The TI Joint Venture further provides, among other things, that if a member or its affiliate terminates all or substantially all of the property management agreements or defaults in its material obligations under the agreement or undergoes a change of control (as defined, the “Triggering Member”), the other member generally shall have the right (but not the obligation) to either (i) sell its 50% interest in the TI Joint Venture to the Triggering Member at fair market value (as agreed upon or as determined under an appraisal process) or (ii) purchase the Triggering Member’s 50% interest in the TI Joint Venture at 95% of fair market value. For the three and nine months ended September 30, 2018, we recorded revenues of approximately $119,000 and approximately $310,000, respectively, which was included in ancillary operating revenue in our consolidated statement of operations. Storage Auction Program Our Sponsor owns a minority interest in a company that owns 50% of an online auction company (the “Auction Company”) that serves as a web portal for self storage companies to post their auctions for the contents of abandoned storage units online instead of using live auctions conducted at the self storage facilities. The Auction Company receives a service fee for such services. Through December 31, 2017, neither our Property Manager nor our sub-property manager utilized the Auction Company at our properties. During the three and nine months ended September 30, 2018, we paid approximately $2,300 and approximately $7,000 in fees to the Auction Company related to our properties. Our properties receive the proceeds from such online auctions.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 8. Commitments and Contingencies Distribution Reinvestment Plan Prior to the suspension of our DRP Offering on August 10, 2018, as described below, our amended and restated DRP Offering allowed both our Class A stockholders and Class T stockholders to have distributions otherwise distributable to them invested in additional shares of our Class A Shares and Class T Shares, respectively. The purchase price per share pursuant to our DRP Offering is equivalent to the estimated value per share approved by our Board and in effect on the date of purchase of shares under the plan. In conjunction with the Board’s declaration of a new estimated value per share of our common stock on April 19, 2018, beginning in May 2018, shares sold pursuant to our DRP Offering were sold at the new estimated value per share of $11.58 per Class A Share and Class T Share. On May 5, 2017, we filed with the SEC a Registration Statement on Form S-3, which registered up to an additional $115.6 million in shares under our DRP Offering. We may amend or terminate the amended and restated DRP Offering for any reason at any time upon 10 days’ prior written notice to stockholders. No sales commissions, dealer manager fee, or stockholder servicing fee will be paid on shares sold through the amended and restated DRP Offering. As of September 30, 2018, we had sold approximately 0.5 million Class A Shares and approximately 0.2 million Class T Shares in our DRP Offering. Share Redemption Program Prior to the suspension of our share redemption program, as described below, our share redemption program enabled stockholders to sell their shares to us in limited circumstances. As long as our common stock is not listed on a national securities exchange or over-the-counter market, our stockholders who have held their stock for at least one year may be able to have all or any portion of their shares of stock redeemed by us. We may redeem the shares of stock presented for redemption for cash to the extent that we have sufficient funds available to fund such redemption. Our Board may amend, suspend or terminate the share redemption program with 30 days’ notice to our stockholders. We may provide this notice by including such information in a Current Report on Form 8-K or in our annual or quarterly reports, all publicly filed with the SEC, or by a separate mailing to our stockholders. The Board may resume accepting redemptions under the same redemption program at any time. The complete terms of our share redemption program are described in our prospectus. The amount that we may pay to redeem stock for redemptions is the redemption price set forth in the following table which is based upon the number of years the stock is held: Number Years Held Redemption Price Less than 1 No Redemption Allowed 1 or more but less than 3 90.0% of Redemption Amount 3 or more but less than 4 95.0% of Redemption Amount 4 or more 100.0% of Redemption Amount Excluding any period while the program is suspended, any time we are engaged in an offering of shares, the Redemption Amount for shares purchased under our share redemption program will always be equal to or lower than the applicable per share offering price. As long as we are engaged in an offering, the Redemption Amount shall be the lesser of the per share amount the stockholder paid for their shares or the price per share in the current offering. The Redemption Amount for shares received as a stock distribution shall be equal to the lesser of the per share amount a stockholder paid for the original shares purchased or the price per share in the current offering. The length of time shares received as a stock distribution are held will be based on the date such stock distribution was declared. In addition, the redemption price per share will be adjusted for any stock combinations, splits and recapitalizations with respect to shares of common stock and reduced by the aggregate amount of net sale or refinance proceeds per share, if any, distributed to the redeeming stockholder prior to the redemption date. If we are no longer engaged in an offering, the per share Redemption Amount will be determined by our Board. Our Board will announce any redemption price adjustment and the time period of its effectiveness as a part of its regular communications with our stockholders. At any time the redemption price during an offering is determined by any method other than the offering price, if we have sold property and have made one or more special distributions to our stockholders of all or a portion of the net proceeds from such sales, the per share redemption price will be reduced by the net sale proceeds per share distributed to investors prior to the redemption date as a result of the sale of such property in the special distribution. Our Board will, in its sole discretion, determine which distributions, if any, constitute a special distribution. While our Board does not have specific criteria for determining a special distribution, we expect that a special distribution will only occur upon the sale of a property and the subsequent distribution of the net sale proceeds. There are several limitations on our ability to redeem shares under the share redemption program including, but not limited to: • Unless the shares are being redeemed in connection with a stockholder’s death, “qualifying disability” • During any calendar year, we will not redeem in excess of 5% of the weighted-average number of shares outstanding during the prior calendar year. • The cash available for redemption is limited to the proceeds from the sale of shares pursuant to our DRP Offering, less any prior redemptions. • We have no obligation to redeem shares if the redemption would violate the restrictions on distributions under Maryland law, which prohibits distributions that would cause a corporation to fail to meet statutory tests For the year ended December 31, 2017, we received quarterly redemption requests totaling approximately 22,000 shares (approximately $211,000) which were fulfilled in April, July and October 2017 and January 2018. For the six months ended June 30, 2018, we received redemption requests totaling approximately 145,000 shares (approximately $1.4 million) which were fulfilled in April and July 2018. Due to the suspension of our share redemption program, no shares were redeemed for the three months ended September 30, 2018. Suspension of DRP Offering and Share Redemption Program In connection with a review of strategic alternatives by a special committee established by our Board comprised solely of our independent directors, on August 10, 2018, the Board approved the suspension of our DRP Offering and share redemption program. Under our DRP Offering, the Board may amend, modify, suspend or terminate our plan for any reason upon 10 days’ written notice to the participants and under our share redemption program, the Board may amend, suspend or terminate our program with 30 days’ notice to our stockholders. Consistent with the terms of our DRP Offering, distributions declared by the Board for the month of July 2018, which were paid on or about August 15, 2018, were not affected by this suspension. However, beginning with the distributions declared by the Board for the month of August 2018, which were paid in September 2018, and continuing until such time as the Board may approve the resumption of the DRP Offering, if ever, all distributions declared by the Board were paid to our stockholders in cash. Prior to the suspension of our share redemption program, consistent with its terms, all redemption requests received, and not withdrawn, on or prior to the last day of the applicable quarter were processed on the last business day of the month following the end of the quarter in which the redemption requests were received. Accordingly, redemption requests received during the second quarter of 2018 were processed on July 31, 2018, and redemption requests received during the third quarter of 2018 ordinarily would have needed to be received on or prior to September 30, 2018 and would have been processed on October 31, 2018. However, the effective date of the aforementioned suspension of our share redemption program occurred prior to September 30, 2018. Accordingly, any redemption requests received during the third quarter of 2018, or any future quarter, will not be processed until such time as the Board may approve the resumption of our share redemption program, if ever. Operating Partnership Redemption Rights The limited partners of our Operating Partnership have the right to cause our Operating Partnership to redeem their limited partnership units for cash equal to the value of an equivalent number of our shares, or, at our option, we may purchase their limited partnership units by issuing one share of our common stock for each limited partnership unit redeemed. These rights may not be exercised under certain circumstances that could cause us to lose our REIT election. Furthermore, limited partners may exercise their redemption rights only after their limited partnership units have been outstanding for one year. Our Advisor is prohibited from exchanging or otherwise transferring its limited partnership units so long as our Advisor is acting as our advisor under the Advisory Agreement. Other Contingencies From time to time, we are party to legal proceedings that arise in the ordinary course of our business. We are not aware of any legal proceedings of which the outcome is reasonably likely to have a material adverse effect on our results of operations or financial condition, nor are we aware of any such legal proceedings contemplated by governmental authorities.

Potential Acquisitions

Potential Acquisitions	9 Months Ended
	Sep. 30, 2018
Text Block [Abstract]
Potential Acquisitions	Note 9. Potential Acquisitions Gilbert, Arizona On April 5, 2017, one of our subsidiaries executed a purchase and sale agreement with an unaffiliated third party for the acquisition of property that is being developed into a self storage facility located in Gilbert, Arizona (the “Riggs Road Property”). The purchase price for the Riggs Road Property is $10.0 million, plus closing costs and acquisition fees. We expect the acquisition of the Riggs Road Property to close in the first half of 2019 after construction is complete on the self storage facility and a certificate of occupancy has been issued. We expect to fund such acquisition through the issuance of debt financing. If we fail to acquire the Riggs Road Property, in addition to the incurred acquisition costs, we may also forfeit earnest money of $1.0 million as a result. On November 9, 2017, one of our subsidiaries made a preferred equity investment of approximately $1.25 million in the entity that is developing the Riggs Road Property. On July 12, 2018, affiliates of the entity developing the Riggs Road Property repurchased our preferred equity investment from us, returning our initial capital, plus the accrued preferred return of

Selected Quarterly Data

Selected Quarterly Data	9 Months Ended
	Sep. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Data	Note 10. Selected Quarterly Data The following is a summary of quarterly financial information for the periods shown below: Three months ended September 30, 2017 December 31, 2017 March 31, 2018 June 30, 2018 September 30, 2018 Total revenues $ 3,804,702 $ 4,228,847 $ 4,357,428 $ 4,787,406 $ 5,224,659 Total operating expenses 5,693,427 4,191,889 4,810,783 5,764,547 5,843,047 Operating income (loss) (1,888,725 ) 36,958 (453,355 ) (977,141 ) (618,388 ) Net income (loss) (1,791,570 ) 55,270 (623,313 ) (1,195,603 ) (908,093 ) Net income (loss) attributable to the common stockholders (1,790,415 ) 55,455 (622,844 ) (1,194,774 ) (907,344 ) Net loss per Class A Share-basic and diluted (0.07 ) 0.00 (0.02 ) (0.04 ) (0.03 ) Net loss per Class T Share-basic and diluted (0.07 ) 0.00 (0.02 ) (0.04 ) (0.03 )

Declaration of Distributions

Declaration of Distributions	9 Months Ended
	Sep. 30, 2018
Text Block [Abstract]
Declaration of Distributions	Note 11. Declaration of Distributions Cash Distribution Declaration On September 26, 2018, our Board declared a daily distribution rate for the fourth quarter of 2018 of $0.0013698630 per day per share on the outstanding shares of common stock, payable to both Class A and Class T stockholders of record of such shares as shown on our books as of the close of business on each day during the period commencing on October 1, 2018 and ending December 31, 2018. In connection with this distribution, after the stockholder servicing fee is paid, approximately $0.0011 per day will be paid per class T share. Such distributions payable to each stockholder of record during a month will be paid the following month.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 12. Subsequent Events Merger Agreement with Strategic Storage Trust II, Inc. On October 1, 2018, we, our Operating Partnership, SST II, SST II OP, and Merger Sub, entered into the Merger Agreement in connection with the Mergers. See Note 3, Potential Merger KeyBank Extension On October 24, 2018, we entered into an amendment to our Amended KeyBank Facility to extend the maturity date from December 20, 2018 to February 18, 2019 and to reduce the commitment from $50 million to $28 million. Completed Acquisitions Las Vegas, Nevada On November 6, 2018, we closed on a self storage facility located in Las Vegas, Nevada (the “Deer Springs Property”) for a purchase price of approximately $9.2 million, plus closing costs and acquisition fees, which was funded through a drawdown on our Amended KeyBank Facility. We incurred acquisition fees of approximately $0.2 million in connection with the acquisition.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) as contained within the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) and the rules and regulations of the SEC.
Principles of Consolidation	Principles of Consolidation Our financial statements, and the financial statements of our Operating Partnership, including its wholly-owned subsidiaries, are consolidated in the accompanying consolidated financial statements. The portion of these consolidated entities not wholly-owned by us is presented as noncontrolling interests. All significant intercompany accounts and transactions have been eliminated in consolidation.
Consolidation Considerations	Consolidation Considerations Current accounting guidance provides a framework for identifying a variable interest entity (“VIE”) and determining when a company should include the assets, liabilities, noncontrolling interests, and results of activities of a VIE in its consolidated financial statements. In general, a VIE is an entity or other legal structure used to conduct activities or hold assets that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. Generally, a VIE should be consolidated if a party with an ownership, contractual, or other financial interest in the VIE (a variable interest holder) has the power to direct the VIE’s most significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could be significant to the VIE. A variable interest holder that consolidates the VIE is called the primary beneficiary. Upon consolidation, the primary beneficiary generally must initially record all of the VIE’s assets, liabilities, and noncontrolling interest at fair value and subsequently account for the VIE as if it were consolidated based on majority voting interest. Our Operating Partnership is deemed to be a VIE and is consolidated by the Company as the primary beneficiary. As of December 31, 2017, we had not entered into any other contracts/interests that would be deemed to be variable interests in a VIE other than one preferred equity investment, which was accounted for under the equity method of accounting. As of September 30, 2018, such preferred equity investment had been redeemed, and the only other contract/interest that would be deemed to be variable interests in a VIE was our tenant insurance joint venture, which is accounted for using the equity method of accounting. For more information please see Note 9, Potential Acquisitions
Noncontrolling Interest in Consolidated Entities	Noncontrolling Interest in Consolidated Entities We account for the noncontrolling interest in our Operating Partnership in accordance with the related accounting guidance. Due to our control through our general partnership interest in our Operating Partnership and the limited rights of the limited partner, our Operating Partnership, including its wholly-owned subsidiaries, are consolidated with the Company and the limited partner interest is reflected as a noncontrolling interest in the accompanying consolidated balance sheets. The noncontrolling interest shall be attributed its share of income and losses, even if that attribution results in a deficit noncontrolling interest balance.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management will adjust such estimates when facts and circumstances dictate. Actual results could materially differ from those estimates. The most significant estimates made include the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed at relative fair value, the determination if certain entities should be consolidated, the evaluation of potential impairment of long-lived assets, and the estimated useful lives of real estate assets and intangibles.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all short-term, highly liquid investments that are readily convertible to cash with a maturity of three months or less at the time of purchase to be cash equivalents. We may maintain cash and cash equivalents in financial institutions in excess of insured limits, but believe this risk will be mitigated by only investing in or through high quality financial institutions.
Real Estate Purchase Price Allocation	Real Estate Purchase Price Allocation We account for acquisitions in accordance with GAAP which requires that we allocate the purchase price of a property to the tangible and intangible assets acquired and the liabilities assumed based on their relative fair values. This guidance requires us to make significant estimates and assumptions, including fair value estimates, which requires the use of significant unobservable inputs, as of the acquisition date. The value of the tangible assets, consisting of land and buildings, is determined as if vacant. Substantially all of the leases in place at acquired properties are at market rates, as the majority of the leases are month-to-month contracts. We also consider whether in-place, market leases represent an intangible asset. We recorded approximately $0.4 million and approximately $1.3 million in intangible assets to recognize the value of in-place leases related to our acquisitions during the nine months ended September 30, 2018 and the year ended December 31, 2017, respectively. We do not expect, nor to date have we recorded, intangible assets for the value of customer relationships because we expect we will not have concentrations of significant customers and the average customer turnover will be fairly frequent. Allocation of purchase price to acquisitions of facilities are allocated to the individual facilities based upon an income approach or a cash flow analysis using appropriate risk adjusted capitalization rates which take into account the relative size, age, and location of the individual facility along with current and projected occupancy and rental rate levels or appraised values, if available. In January 2017, the FASB issued Accounting Standards Update 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”). ASU 2017-01 clarifies the framework for determining whether an integrated set of assets and activities meets the definition of a business. The revised framework provides guidance for determining whether an integrated set of assets and activities is a business and narrows the definition of a business, which is expected to result in fewer transactions being accounted for as business combinations. Acquisitions of integrated sets of assets and activities that do not meet the definition of a business are accounted for as asset acquisitions. We adopted this ASU on January 1, 2018. We expect 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) or because the acquisition does not include a substantive process in the form of an acquired workforce or an acquired contract that cannot be replaced without significant cost, effort or delay. As a result, once an acquisition is deemed probable, transaction costs are capitalized rather than expensed. During the nine months ended September 30, 2018, we acquired four properties that did not meet the revised definition of a business, and we capitalized approximately $1.0 million of acquisition-related transaction costs that would have otherwise been expensed under the guidance in effect prior to January 1, 2018. During the three months ended September 30, 2018 and 2017, we expensed approximately $36,000 and approximately $1.5 million, respectively, of acquisition-related transaction costs that did not meet our capitalization criteria during the respective periods. During the nine months ended September 30, 2018 and 2017, we expensed approximately $0.3 million and approximately $2.9 million, respectively, of acquisition-related transaction costs that did not meet our capitalization criteria during the respective periods.
Evaluation of Possible Impairment of Long-Lived Assets	Evaluation of Possible Impairment of Long-Lived Assets Management monitors events and changes in circumstances that could indicate that the carrying amounts of our long-lived assets may not be recoverable. When indicators of potential impairment are present that indicate that the carrying amounts of the assets may not be recoverable, we will assess the recoverability of the assets by determining whether the carrying value of the long-lived assets will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we will adjust the value of the long-lived assets to the fair value and recognize an impairment loss. For the three and nine months ended September 30, 2018 and 2017, no impairment losses were recognized.
Revenue Recognition	Revenue Recognition Management believes that all of our leases are operating leases. Rental income is recognized in accordance with the terms of the leases, which generally are month-to-month. Revenues from any long-term operating leases are recognized on a straight-line basis over the term of the lease. The excess of rents received over amounts contractually due pursuant to the underlying leases is included in accounts payable and accrued liabilities in our consolidated balance sheets and contractually due but unpaid rent is included in other assets.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts Tenant accounts receivable is reported net of an allowance for doubtful accounts. Management’s estimate of the allowance is based upon a review of the current status of tenant accounts receivable. It is reasonably possible that management’s estimate of the allowance will change in the future.
Real Estate Facilities	Real Estate Facilities Real estate facilities are recorded based upon relative fair values as of the date of acquisition. We capitalize costs incurred to develop, construct, renovate and improve properties, including interest and property taxes incurred during the construction period. The construction period begins when expenditures for the real estate assets have been made and activities that are necessary to prepare the asset for its intended use are in progress. The construction period ends when the asset is substantially complete and ready for its intended use.
Depreciation of Real Property Assets	Depreciation of Real Property Assets Our management is required to make subjective assessments as to the useful lives of our depreciable assets. We consider the period of future benefit of the asset to determine the appropriate useful lives. Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives as follows: Description Standard Depreciable Life Land Not Depreciated Buildings 30-35 years Site Improvements 7-10 years
Depreciation of Personal Property Assets	Depreciation of Personal Property Assets Personal property assets consist primarily of furniture, fixtures and equipment and are depreciated on a straight-line basis over the estimated useful lives generally ranging from 3 to 5 years, and are included in other assets on our consolidated balance sheets.
Intangible Assets	Intangible Assets We have allocated a portion of our real estate purchase price to in-place lease intangibles. We are amortizing in-place lease intangibles on a straight-line basis over the estimated future benefit period. As of September 30, 2018 and December 31, 2017, the gross amounts allocated to in-place lease intangibles were approximately $4.4 million and $4.1 million, respectively, and accumulated amortization of in-place lease intangibles totaled approximately $3.9 million and $3.2 million, respectively. The total future estimated amortization expense of intangible assets for the years ending December 31, 2018 and 2019 is approximately $0.2 million and $0.3 million, respectively, and none for the years thereafter.
Foreign Currency Translation	Foreign Currency Translation For non-U.S. functional currency operations, assets and liabilities are translated to U.S. dollars at current exchange rates. Revenues and expenses are translated at the average rates for the period. All related adjustments are recorded in accumulated other comprehensive income (loss) as a separate component of equity. Transactions denominated in a currency other than the functional currency of the related operation are recorded at rates of exchange in effect at the date of the transaction. Gains or losses on foreign currency transactions are recorded in other income (expense).
Debt Issuance Costs	Debt Issuance Costs The net carrying value of costs incurred in connection with obtaining revolving financing are presented in debt issuance costs on our consolidated balance sheets and such net amounts as of September 30, 2018 and December 31, 2017 totaled approximately $0.1 million and $0.5 million, respectively. The net carrying value of costs incurred in connection with obtaining non-revolving financing are presented in our consolidated balance sheets as a deduction from secured debt and such amounts as of September 30, 2018 and December 31, 2017 totaled approximately $0.2 million and $0.3 million, respectively. Debt issuance costs are amortized on a straight-line basis over the term of the related loan, which is not materially different than the effective interest method.
Organizational and Offering Costs	Organization and Offering Costs We pay our Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. We will cease paying the stockholder servicing fee with respect to the Class T Shares sold in the Primary Offering at the earlier of (i) the date we list our shares on a national securities exchange, merge or consolidate with or into another entity, or sell or dispose of all or substantially all of our assets, (ii) the date at which the aggregate underwriting compensation from all sources equals 10% of the gross proceeds from the sale of both Class A Shares and Class T Shares in our Primary Offering (i.e., excluding proceeds from sales pursuant to our distribution reinvestment plan), which calculation shall be made by us with the assistance of our Dealer Manager commencing after the termination of the Primary Offering; (iii) the fifth anniversary of the last day of the fiscal quarter in which our Primary Offering (i.e., excluding our distribution reinvestment plan offering) terminates; and (iv) the date that such Class T Share is redeemed or is no longer outstanding. Our Dealer Manager entered into participating dealer agreements with certain other broker-dealers which authorized them to sell our shares. Upon sale of our shares by such broker-dealers, our Dealer Manager re-allowed all of the sales commissions and, subject to certain limitations, the stockholder servicing fees paid in connection with sales made by these broker-dealers. Our Dealer Manager was also permitted to re-allow to these broker-dealers a portion of their dealer manager fee as marketing fees, reimbursement of certain costs and expenses of attending training and education meetings sponsored by our Dealer Manager, payment of attendance fees required for employees of our Dealer Manager or other affiliates to attend retail seminars and public seminars sponsored by these broker-dealers, or to defray other distribution-related expenses. Our Dealer Manager also received reimbursement of bona fide due diligence expenses; however, to the extent the due diligence expenses could not be justified, any excess over actual due diligence expenses would have been considered underwriting compensation subject to a 10% FINRA limitation and, when aggregated with all other non-accountable expenses in connection with our Public Offering, could not exceed 3% of gross offering proceeds from sales in the Public Offering. We record a liability within Due to affiliates for the future estimated stockholder servicing fees at the time of sale of Class T Shares as an offering cost.
Redeemable Common Stock and Distribution Reinvestment Plan	Redeemable Common Stock and Distribution Reinvestment Plan We previously adopted a share redemption program that enabled stockholders to sell their shares to us in limited circumstances. However, this program has been suspended, as discussed in Note 8 below. We record amounts that are redeemable under the share redemption program as redeemable common stock in the accompanying consolidated balance sheets since the shares are redeemable by the holder pursuant to the share redemption program. The maximum amount redeemable under our share redemption program is limited to the number of shares we can repurchase with the amount of the net proceeds from the sale of shares under the distribution reinvestment plan. However, accounting guidance states that determinable amounts that can become redeemable should be presented as redeemable when such amount is known. Therefore, the net proceeds from the distribution reinvestment plan are considered to be temporary equity and are presented as redeemable common stock in the accompanying consolidated balance sheets. In addition, current accounting guidance requires, among other things, that financial instruments that represent a mandatory obligation of us to repurchase shares be classified as liabilities and reported at settlement value. Our redeemable common shares are contingently redeemable by the holder pursuant to the share redemption program. When we determine we have a mandatory obligation to repurchase shares under the share redemption program, we reclassify such obligations from temporary equity to a liability based upon their respective settlement values. For the six months ended June 30, 2018, we received quarterly redemption requests totaling approximately 145,000 shares and approximately $1.4 million. Such requests were fulfilled in April and July 2018. Due to the suspension of our share redemption program, no shares were redeemed for the three months ended September 30, 2018. For the year ended December 31, 2017, we received redemption requests totaling approximately 22,000 shares and approximately $211,000. Such requests were fulfilled in April, July, and October 2017 and January 2018.
Accounting for Equity Awards	Accounting for Equity Awards The cost of restricted stock is required to be measured based on the grant date fair value and the cost recognized over the relevant service period.
Fair Value Measurements	Fair Value Measurements Under GAAP, we are required to measure certain financial instruments at fair value on a recurring basis. In addition, we are required to measure other financial instruments and balances at fair value on a non-recurring basis. Fair value is defined by the accounting standard for fair value measurements and disclosures as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels. The following summarizes the three levels of inputs and hierarchy of fair value we use when measuring fair value: • Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access; • Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as interest rates and yield curves that are observable at commonly quoted intervals; and • Level 3 inputs are unobservable inputs for the assets or liabilities that are typically based on an entity’s own assumptions as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the fair value measurement will fall within the lowest level that is significant to the fair value measurement in its entirety. The accounting guidance for fair value measurements and disclosures provides a framework for measuring fair value and establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In determining fair value, we will utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment will be necessary to interpret Level 2 and 3 inputs in determining fair value of our financial and non-financial assets and liabilities. Accordingly, there can be no assurance that the fair values we will present will be indicative of amounts that may ultimately be realized upon sale or other disposition of these assets. Financial and non-financial assets and liabilities measured at fair value on a non-recurring basis in our consolidated financial statements consist of real estate and related liabilities assumed related to our acquisitions. The fair values of these assets and liabilities were determined as of the acquisition dates using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity. In general, we consider multiple valuation techniques when measuring fair values. However, in certain circumstances, a single valuation technique may be appropriate. All of the fair values of the assets and liabilities as of the acquisition dates were derived using Level 3 inputs. The carrying amounts of cash and cash equivalents, tenant accounts receivable, other assets, variable-rate secured debt, accounts payable and accrued liabilities, distributions payable and amounts due to affiliates approximate fair value. To comply with GAAP, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of derivative contracts for the effect of nonperformance risk, we will consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. We had no assets or liabilities that required fair value measurements on a recurring basis at September 30, 2018 and December 31, 2017.
Income Taxes	Income Taxes We made an election to be taxed as a Real Estate Investment Trust (“REIT”), under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the “Code”), commencing with our taxable year ended December 31, 2014. To qualify as a REIT, we must continue to meet certain organizational and operational requirements, including a requirement to distribute at least 90% of the REIT’s ordinary taxable income to stockholders (which is computed without regard to the dividends paid deduction or net capital gains and which does not necessarily equal net income as calculated in accordance with GAAP). As a REIT, we generally will not be subject to federal income tax on taxable income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we will then be subject to federal income taxes on our taxable income at regular corporate rates and will not be permitted to qualify for treatment as a REIT for federal income tax purposes for four years following the year during which qualification is lost unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. Even if we continue to qualify for taxation as a REIT, we may be subject to certain state and local taxes on our income and property, and federal income and excise taxes on our undistributed income. We filed elections to treat our TRS as a taxable REIT subsidiary effective January 1, 2014. In general, the TRS performs additional services for our customers and generally engages in any real estate or non-real estate related business. The TRS is subject to corporate federal and state income tax. The TRS follows accounting guidance which requires the use of the asset and liability method. Deferred income taxes represent the tax effect of future differences between the book and tax bases of assets and liabilities.
Per Share Data	Per Share Data Basic earnings per share attributable to our common stockholders for all periods presented is computed by dividing net income (loss) attributable to our common stockholders by the weighted average number of shares outstanding during the period, excluding unvested restricted stock. Diluted earnings per share is computed by including the dilutive effect of unvested restricted stock, utilizing the treasury stock method. For all periods presented the dilutive effect of unrestricted stock was not included in the diluted weighted average shares as such shares were antidilutive.
Recently Issued Accounting Guidance	Recently Issued Accounting Guidance In May 2014, the FASB issued ASU 2014-09 “Revenue from Contracts with Customers” as ASC Topic 606. The objective of ASU 2014-09 is to establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and will supersede most of the existing revenue recognition guidance, including industry-specific guidance. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the new standard, companies will perform a five-step analysis of transactions to determine when and how revenue is recognized. ASU 2014-09 applies to all contracts with customers except those that are within the scope of other topics in the FASB ASC. This ASU was applied using the modified retrospective approach. We have determined that our self storage rental revenues are not subject to the guidance in ASU 2014-09, as they qualify as lease contracts, which are excluded from its scope. We adopted this ASU on January 1, 2018 and its adoption did not have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 amends the guidance on accounting for leases. Under ASU 2016-02, lessees will be required to recognize the following for all leases (with the exception of short term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under ASU 2016-02, lessor accounting is largely unchanged. It also includes extensive amendments to the disclosure requirements. ASU 2016-02 is effective for fiscal years and interim periods beginning after December 15, 2018. Early adoption is permitted for financial statements that have not yet been made available for issuance. ASU 2016-02 requires a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. While we continue to evaluate the standard, based upon our assessment to date, we do not anticipate the adoption of this standard will have a material impact on our consolidated financial statements, because substantially all of our lease revenues are derived from month-to-month leases.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Estimated Useful Lives used to Depreciate Real Property Assets	Depreciation of our real property assets is charged to expense on a straight-line basis over the estimated useful lives as follows: Description Standard Depreciable Life Land Not Depreciated Buildings 30-35 years Site Improvements 7-10 years

Real Estate Facilities (Tables)

Real Estate Facilities (Tables)	9 Months Ended
	Sep. 30, 2018
Real Estate [Abstract]
Summary of Activity in Real Estate Facilities	The following summarizes the activity in real estate facilities during the nine months ended September 30, 2018: Real estate facilities Balance at December 31, 2017 $ 176,360,865 Facility acquisitions 51,500,667 Construction in process placed in service (1) 11,301,512 Impact of foreign exchange rate changes (112,584 ) Improvements and additions 512,011 Balance at September 30, 2018 $ 239,562,471 Accumulated depreciation Balance at December 31, 2017 $ (7,052,779 ) Depreciation expense (4,594,771 ) Balance at September 30, 2018 $ (11,647,550 )
Summary of Purchase Price Allocations and Occupancy Information for Acquisitions	The following table summarizes the purchase price allocations and occupancy information for our acquisitions during the nine months ended September 30, 2018: Property Acquisition Date Real Estate Assets Intangibles Total (1) Debt Issued 2018 Revenue (2) 2018 Property Operating Income (Loss) (2)(3) Initial Occupancy Occupancy at September 30, 2018 Pembroke Pines – FL 02/01/18 $ 16,005,449 $ — $ 16,005,449 $ — $ 133,308 $ (93,944 ) 0 % 40 % Riverview – FL 02/21/18 7,946,391 — 7,946,391 — 120,886 (109,855 ) 0 % 52 % Eastlake – CA 03/09/18 17,342,483 — 17,342,483 — 146,842 (134,333 ) 0 % 34 % McKinney – TX 05/01/18 10,206,344 395,000 10,601,344 — 367,979 199,622 78 % 89 % Total (4) $ 51,500,667 $ 395,000 $ 51,895,667 $ — $ 769,015 $ (138,510 ) (1) The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent cash paid for the property and capitalized acquisition costs. (2) The operating results of the facilities acquired above have been included in our consolidated statement of operations since their respective acquisition date. (3) Property operating loss excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses.

Pro Forma Consolidated Financ_2

Pro Forma Consolidated Financial Information (Tables)	9 Months Ended
	Sep. 30, 2018
Text Block [Abstract]
Summary of Consolidated Results of Operations on Pro Forma Basis	For the nine months ended September 30, 2018 September 30, 2017 Pro forma revenue $ 14,369,493 $ 11,816,396 Pro forma operating expenses $ (15,788,997 ) $ (12,899,938 ) Pro forma net loss attributable to common stockholders $ (2,096,047 ) $ (1,245,904 )

Secured Debt (Tables)

Secured Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Future Principal Payment Requirements on Outstanding Secured Debt	The following table presents the future principal payment requirements on outstanding secured debt as of September 30, 2018: 2018 $ — 2019 9,000,000 (1) 2020 — 2021 4,092,474 2022 — 2023 and thereafter — Total payments 13,092,474 Non-revolving debt issuance costs, net (219,046 ) Total $ 12,873,428 (1) Such amount is outstanding under the Amended KeyBank Facility. Subsequent to September 30, 2018 the maturity was extended to February 18, 2019.

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Summary of Related Party Costs	Pursuant to the terms of the agreements described above, the following table summarizes related party costs incurred and paid by us for the year ended December 31, 2017 and the nine months ended September 30, 2018, as well as any related amounts payable as of December 31, 2017 and September 30, 2018: Year Ended December 31, 2017 Nine Months Ended September 30, 2018 Incurred Paid Payable Incurred Paid Payable Expensed Operating expenses (including organizational costs) $ 770,835 $ 723,044 $ 57,706 $ 1,004,092 $ 930,557 $ 131,241 Transfer Agent expenses — — — 140,033 136,246 3,787 Asset management fees 736,757 728,382 15,625 881,081 896,706 — Property management fees (1) 1,018,875 1,018,875 — 957,553 953,528 4,025 Acquisition costs 2,023,134 1,993,908 35,650 172,800 208,450 — Capitalized Debt issuance costs 3,983 3,983 — 61,722 61,722 — Acquisition costs 150,000 150,000 — 944,681 935,672 9,009 Additional Paid-in Capital Selling commissions 9,205,704 9,205,704 — — — — Dealer Manager fees 3,057,148 3,156,174 — — — — Stockholder servicing fees (2) 3,063,039 606,852 3,297,107 — 573,630 2,723,477 Offering costs 166,190 166,190 — — — — Total $ 20,195,665 $ 17,753,112 $ 3,406,088 $ 4,161,962 $ 4,696,511 $ 2,871,539 (1) During the year ended December 31, 2017, and nine months ended September 30, 2018, property management fees included approximately $926,000 and none, respectively, of fees paid to the sub-property manager of our properties. (2) The Company pays our Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365th of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Stock for Redemptions Based on Number of Years Stock Held	The amount that we may pay to redeem stock for redemptions is the redemption price set forth in the following table which is based upon the number of years the stock is held: Number Years Held Redemption Price Less than 1 No Redemption Allowed 1 or more but less than 3 90.0% of Redemption Amount 3 or more but less than 4 95.0% of Redemption Amount 4 or more 100.0% of Redemption Amount

Selected Quarterly Data (Tables

Selected Quarterly Data (Tables)	9 Months Ended
	Sep. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Financial Information	The following is a summary of quarterly financial information for the periods shown below: Three months ended September 30, 2017 December 31, 2017 March 31, 2018 June 30, 2018 September 30, 2018 Total revenues $ 3,804,702 $ 4,228,847 $ 4,357,428 $ 4,787,406 $ 5,224,659 Total operating expenses 5,693,427 4,191,889 4,810,783 5,764,547 5,843,047 Operating income (loss) (1,888,725 ) 36,958 (453,355 ) (977,141 ) (618,388 ) Net income (loss) (1,791,570 ) 55,270 (623,313 ) (1,195,603 ) (908,093 ) Net income (loss) attributable to the common stockholders (1,790,415 ) 55,455 (622,844 ) (1,194,774 ) (907,344 ) Net loss per Class A Share-basic and diluted (0.07 ) 0.00 (0.02 ) (0.04 ) (0.03 ) Net loss per Class T Share-basic and diluted (0.07 ) 0.00 (0.02 ) (0.04 ) (0.03 )

Organization - Additional Infor

Organization - Additional Information (Detail)

Oct. 01, 2018$ / shares

Apr. 19, 2018$ / shares

May 05, 2017USD ($)

Oct. 01, 2015USD ($)$ / shares

Jan. 20, 2015USD ($)

Jan. 16, 2015USD ($)shares

May 31, 2013USD ($)

Sep. 30, 2018USD ($)EmployeePropertyState$ / sharesshares

Sep. 30, 2017USD ($)

Dec. 31, 2013USD ($)

May 31, 2018$ / shares

Mar. 31, 2018

Dec. 31, 2017$ / sharesshares

May 23, 2014USD ($)

Jun. 17, 2013USD ($)

Organization and Nature of Operations [Line Items]

Date of formation of company

Mar. 12, 2013

Entity number of employees | Employee

0

Preferred Stock, shares authorized | shares

200,000,000

[1]

200,000,000

Preferred Stock, par value | $ / shares

$ 0.001

[1]

$ 0.001

Shares issuable pursuant to distribution reinvestment plan

$ 95,000,000

Gross proceeds from issuance of common stock

$ 171,980,653

Shares issued under DRP offering

$ 3,904,447

$ 3,368,914

Number of owned self storage facilities | Property

28

Number of states in which wholly-owned self storage facilities are located | State

10

Strategic Transfer Agent Services, LLC

Organization and Nature of Operations [Line Items]

Percentage of voting membership interest

100.00%

Maximum

Organization and Nature of Operations [Line Items]

Shares issued under DRP offering

$ 115,600,000

Class A Common stock

Organization and Nature of Operations [Line Items]

Common stock, shares authorized | shares

350,000,000

[1]

350,000,000

Common stock, par value | $ / shares

$ 0.001

[1]

$ 0.001

Common Stock, shares issued | shares

19,094,325

[1]

18,942,639

Shares issued under DRP offering

$ 257

Estimated value per common share | $ / shares

$ 11.58

Class A Common stock | Distribution Reinvestment Plan

Organization and Nature of Operations [Line Items]

Estimated value per common share | $ / shares

11.58

Selling price per share | $ / shares

$ 11.58

Class T Common stock

Organization and Nature of Operations [Line Items]

Common stock, shares authorized | shares

350,000,000

[1]

350,000,000

Common stock, par value | $ / shares

$ 0.001

[1]

$ 0.001

Common Stock, shares issued | shares

7,612,599

[1]

7,566,333

Shares issued under DRP offering

$ 79

Estimated value per common share | $ / shares

11.58

Class T Common stock | Distribution Reinvestment Plan

Organization and Nature of Operations [Line Items]

Estimated value per common share | $ / shares

$ 11.58

Selling price per share | $ / shares

$ 11.58

Private Offering

Organization and Nature of Operations [Line Items]

Common stock, shares authorized amount

$ 1,000,000

$ 109,500,000

Issuance of common stock

$ 7,800,000

Number of common stock issued | shares

830,000

Primary Offering | Maximum

Organization and Nature of Operations [Line Items]

Common stock, shares authorized amount

$ 1,000,000,000

Primary Offering | Class A Common stock

Organization and Nature of Operations [Line Items]

Common Stock, shares issued | shares

17,900,000

Gross proceeds from issuance of common stock

$ 193,000,000

Primary Offering | Class T Common stock

Organization and Nature of Operations [Line Items]

Common Stock, shares issued | shares

7,500,000

Gross proceeds from issuance of common stock

$ 79,000,000

Distribution Reinvestment Plan Offering | Class A Common stock

Organization and Nature of Operations [Line Items]

Common Stock, shares issued | shares

480,000

Gross proceeds from issuance of common stock

$ 5,500,000

Distribution Reinvestment Plan Offering | Class T Common stock

Organization and Nature of Operations [Line Items]

Common Stock, shares issued | shares

152,000

Gross proceeds from issuance of common stock

$ 1,800,000

The advisor

Organization and Nature of Operations [Line Items]

Advisor purchased a limited partnership interest in Operating Partnership

$ 201,000

Initial capital contribution

$ 1,000

SmartStop Asset Management

Organization and Nature of Operations [Line Items]

Percentage of limited partnership interests

50.00%

Percentage of non-voting equity interest

15.00%

Affiliate | The advisor

Organization and Nature of Operations [Line Items]

Percentage owned by affiliate in Advisor

2.50%

Strategic Storage Operating Partnership I I L P | R E I T Merger | Subsequent Event

Organization and Nature of Operations [Line Items]

Common stock, par value | $ / shares

$ 0.001

Per share amount to which each share of common stock outstanding immediately prior to merger effective time will be convertible | $ / shares

$ 12

SmartStop Asset Management | The advisor

Organization and Nature of Operations [Line Items]

Economic Interests

97.50%

Percentage of voting membership interest

100.00%

SmartStop Asset Management | Strategic Storage Growth Property Management LLC

Organization and Nature of Operations [Line Items]

Percentage of voting membership interest

100.00%

SmartStop Self Storage, Inc.

Organization and Nature of Operations [Line Items]

Sale price per share | $ / shares

$ 13.75

Enterprise value on sale

$ 1,400,000,000

Strategic Storage Growth Operating Partnership

Organization and Nature of Operations [Line Items]

Percentage of limited partnership interests

99.90%

Preferred Investor | The advisor

Organization and Nature of Operations [Line Items]

Percentage of limited partnership interests owned by noncontrolling owners

0.10%

[1]

(Unaudited)

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended			6 Months Ended	9 Months Ended			12 Months Ended
	Sep. 30, 2018USD ($)Propertyshares		Sep. 30, 2017USD ($)	Jun. 30, 2018USD ($)shares	Sep. 30, 2018USD ($)Propertyshares		Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)Investmentshares
Summary Of Significant Accounting Policies [Line Items]
Number of preferred equity investment | Investment								1
Payments to acquire intangible assets					$ 400,000			$ 1,300,000
Number of properties acquired | Property	4				4
Business combination, acquisition related costs					$ 1,000,000
Asset acquisition related costs	$ 36,000		$ 1,500,000		300,000		$ 2,900,000
Impairment losses recognized	0		$ 0		0		$ 0
Gross amount of lease intangibles	4,400,000				4,400,000			4,100,000
Accumulated amortization of lease intangibles	3,900,000				3,900,000			3,200,000
Estimated amortization expenses of intangible assets in 2018	200,000				200,000
Estimated amortization expenses of intangible assets in 2019	300,000				300,000
Estimated amortization expenses of intangible assets after year 2019	0				0
Debt issuance costs	124,852	[1]			$ 124,852	[1]		465,378
Minimum percentage of ordinary taxable income to be distributed to stockholders					90.00%
Fair Value Measurement, Recurring
Summary Of Significant Accounting Policies [Line Items]
Assets fair value measurements on recurring	0				$ 0			0
Liabilities fair value measurements on recurring	$ 0				$ 0			$ 0
Distributions
Summary Of Significant Accounting Policies [Line Items]
Share issued under distribution reinvestment plan | shares	0			145,000				22,000
Redeemable common Stock
Summary Of Significant Accounting Policies [Line Items]
Value of redemption request of shares				$ 1,400,000				$ 211,000
Class T Common stock
Summary Of Significant Accounting Policies [Line Items]
Share issued under distribution reinvestment plan | shares					33,306
Primary Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Percentage of proceeds from sale of Class A and Class T shares					10.00%
Underwriting compensation					10.00%
Maximum percentage other non-accountable expenses					3.00%
Primary Offering Dealer Manager Agreement | Class T Common stock
Summary Of Significant Accounting Policies [Line Items]
Monthly stockholder servicing fee accrual description					1/365th of 1% of the purchase price per share
Revolving Financing
Summary Of Significant Accounting Policies [Line Items]
Debt issuance costs	$ 100,000				$ 100,000			500,000
Non Revolving Financing
Summary Of Significant Accounting Policies [Line Items]
Debt issuance costs	$ 219,046				$ 219,046			$ 300,000
Personal Property Assets | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					3 years
Personal Property Assets | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life					5 years
[1]	(Unaudited)

Estimated Useful Lives used to

Estimated Useful Lives used to Depreciate Real Property Assets (Detail)	9 Months Ended
	Sep. 30, 2018
Land
Property Plant And Equipment [Line Items]
Standard Depreciable Life	Not Depreciated
Buildings | Minimum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	30 years
Buildings | Maximum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	35 years
Site Improvements | Minimum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	7 years
Site Improvements | Maximum
Property Plant And Equipment [Line Items]
Standard Depreciable Life	10 years

Potential Merger - Additional I

Potential Merger - Additional Information (Details) - R E I T Merger - Strategic Storage Operating Partnership I I L P - Subsequent Event $ / shares in Units, $ in Millions	Oct. 01, 2018USD ($)$ / sharesshares
Business Acquisition [Line Items]
Common stock per share, stockholders are entitled to receive upon merger closing | $ / shares	$ 12
Units of partnership interest, partners are entitled to receive upon merger closing | shares	1.127
Common stock, par value | $ / shares	$ 0.001
Per share amount to which each share of common stock outstanding immediately prior to merger effective time will be convertible | $ / shares	$ 12
Each outstanding partnership interest immediately prior to merger effective time will be convertible | shares	1.127
Merger agreement termination fee before fifth business day of go shop period end time | $	$ 2.9
Merger agreement termination fee after fifth business day of go shop period end time | $	9.6
Merger agreement reverse termination fee, payments to be received | $	$ 9.6

Summary of Activity in Real Est

Summary of Activity in Real Estate Facilities (Detail)	9 Months Ended
	Sep. 30, 2018USD ($)
Real estate facilities
Real estate facilities, beginning balance	$ 176,360,865
Facility acquisitions	51,500,667
Construction in process placed in service	11,301,512	[1]
Impact of foreign exchange rate changes	(112,584)
Improvements and additions	512,011
Real estate facilities, ending balance	239,562,471
Accumulated depreciation
Accumulated depreciation, beginning balance	(7,052,779)
Depreciation expense	(4,594,771)
Accumulated depreciation, ending balance	$ (11,647,550)	[2]
[1]	Construction on the first phase of our Asheville I facility was completed and the facility opened on March 22, 2018. Construction on the Stoney Creek facility was completed and the facility opened on May 31, 2018.
[2]	(Unaudited)

Summary of Purchase Price Alloc

Summary of Purchase Price Allocations and Occupancy Information for Acquisitions (Detail) - USD ($)		9 Months Ended
		Sep. 30, 2018	May 01, 2018	Mar. 09, 2018	Feb. 21, 2018	Feb. 01, 2018
Asset Acquisition [Line Items]
Real Estate Assets		$ 51,500,667
Intangibles		395,000
Total	[1]	51,895,667
Debt Issued		0
Revenue	[2]	769,015
Property Operating Income (Loss)	[2],[3]	$ (138,510)
Pembroke Pines | Florida
Asset Acquisition [Line Items]
Acquisition Date		Feb. 1, 2018
Real Estate Assets		$ 16,005,449
Intangibles		0
Total	[1]	16,005,449
Debt Issued		0
Revenue	[2]	133,308
Property Operating Income (Loss)	[2],[3]	$ (93,944)
Occupancy Percentage		40.00%				0.00%
Riverview | Florida
Asset Acquisition [Line Items]
Acquisition Date		Feb. 21, 2018
Real Estate Assets		$ 7,946,391
Intangibles		0
Total	[1]	7,946,391
Debt Issued		0
Revenue	[2]	120,886
Property Operating Income (Loss)	[2],[3]	$ (109,855)
Occupancy Percentage		52.00%			0.00%
Eastlake | California
Asset Acquisition [Line Items]
Acquisition Date		Mar. 9, 2018
Real Estate Assets		$ 17,342,483
Intangibles		0
Total	[1]	17,342,483
Debt Issued		0
Revenue	[2]	146,842
Property Operating Income (Loss)	[2],[3]	$ (134,333)
Occupancy Percentage		34.00%		0.00%
McKinney | Texas
Asset Acquisition [Line Items]
Acquisition Date		May 1, 2018
Real Estate Assets		$ 10,206,344
Intangibles		395,000
Total	[1]	10,601,344
Debt Issued		0
Revenue	[2]	367,979
Property Operating Income (Loss)	[2],[3]	$ 199,622
Occupancy Percentage		89.00%	78.00%
[1]	The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent cash paid for the property and capitalized acquisition costs.
[2]	The operating results of the facilities acquired above have been included in our consolidated statement of operations since their respective acquisition date.
[3]	Property operating loss excludes corporate general and administrative expenses, asset management fees, interest expenses, depreciation, amortization and acquisition expenses.

Real Estate Facilities - Additi

Real Estate Facilities - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Asset Acquisition [Abstract]
Acquisition fees incurred to the advisor	$ 0.9

Summary of Consolidated Results

Summary of Consolidated Results of Operations on Pro Forma Basis (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Asset Acquisitions Pro Forma Information [Abstract]
Pro forma revenue	$ 14,369,493	$ 11,816,396
Pro forma operating expenses	(15,788,997)	(12,899,938)
Pro forma net loss attributable to common stockholders	$ (2,096,047)	$ (1,245,904)

Pro Forma Consolidated Financ_3

Pro Forma Consolidated Financial Information - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Asset Acquisitions Pro Forma Information [Abstract]
Pro forma acquisition related expenses	$ 0	$ 1.8

Secured Debt - Additional Infor

Secured Debt - Additional Information (Detail) $ in Millions	Oct. 24, 2018	Dec. 20, 2017USD ($)	May 03, 2017CAD ($)	Nov. 03, 2016CAD ($)	May 26, 2016USD ($)	Jul. 31, 2014Property	Sep. 30, 2018USD ($)Property		Dec. 20, 2018USD ($)	Mar. 31, 2018	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
Line of credit facility, description							The KeyBank Facility accrued interest at the Borrower’s option of either (i) LIBOR plus 325 basis points, or (ii) Base Rate plus 225 basis points. Base Rate was the greater of (i) Agent Prime or (ii) the Fed Funds rate plus 0.50%. Additionally, an unused line fee of 25 basis points was assessed on the average daily unused amount of the maximum potential amount we may borrow.
Secured debt							$ 12,873,428	[1]			$ 5,594,779
Torbarrie Property
Debt Instrument [Line Items]
Secured debt							$ 0
Torbarrie Property | Toronto, Canada
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							1.95%
Line of credit facility interest rate							4.65%
Maturity date							Sep. 1, 2021
Maximum borrowing amount under the loan				$ 10.3
Debt instrument maturity date							The Torbarrie Loan has a maturity date of September 1, 2021. Payments due under the Torbarrie Loan are initially interest-only and due in arrears on the first day of each month.
Debt service coverage ratio				110.00%
Amortization period				25 years
Stoney Creek Property
Debt Instrument [Line Items]
Amounts drawn							$ 4,100,000
Stoney Creek Property | Toronto, Canada
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							1.95%
Line of credit facility interest rate							4.65%
Maturity date							Oct. 1, 2021
Maximum borrowing amount under the loan			$ 7.8
Debt instrument maturity date							The Stoney Creek Loan has a maturity date of October 1, 2021. Payments due under the Stoney Creek Loan are initially interest-only and due in arrears on the first day of each month.
Debt service coverage ratio			110.00%
Amortization period			25 years
Baseline Loan
Debt Instrument [Line Items]
Secured debt					$ 5,100,000
Maturity date							May 26, 2019
Baseline Loan | Maximum
Debt Instrument [Line Items]
Loan extension period							3 years
Baseline Loan | Minimum
Debt Instrument [Line Items]
Line of credit facility interest rate					3.25%
LIBOR | Baseline Loan
Debt Instrument [Line Items]
Line of credit facility applicable interest rate					2.75%
Royal Bank of Canada Prime Rate | Torbarrie Property | Toronto, Canada
Debt Instrument [Line Items]
Debt instrument prime rate										3.70%
Royal Bank of Canada Prime Rate | Stoney Creek Property | Toronto, Canada
Debt Instrument [Line Items]
Debt instrument prime rate							3.70%
Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Line of credit facility applicable interest rate						3.25%
Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Line of credit facility applicable interest rate						2.25%
Revolving Credit Facility | Fed Funds Rate Plus
Debt Instrument [Line Items]
Line of credit facility applicable interest rate						0.50%
Revolving Credit Facility | Unused Fee
Debt Instrument [Line Items]
Line of credit facility applicable interest rate						0.25%
Revolving Credit Facility | First Mortgage Liens
Debt Instrument [Line Items]
Number of mortgaged properties | Property						13
Amended Revolving Credit Facility
Debt Instrument [Line Items]
Revolving loan maturity date		Dec. 20, 2018					Feb. 18, 2019
Line of credit facility, description							The Amended KeyBank Facility bears interest at the Borrower’s option of either (i) LIBOR plus 225 basis points, or (ii) Base Rate plus 125 basis points. Base Rate is the greater of (i) Agent Prime or (ii) the Fed Funds rate plus 0.50%. Additionally, an unused line fee of 25 or 20 basis points is assessed on the average daily unused amount of the maximum potential amount we may borrow if the unused maximum potential amount is greater than or equal to 50% or less than 50%, respectively. As of September 30, 2018, the applicable interest rate was approximately 4.35% which was based on LIBOR plus 225 basis points
Line of credit facility, term of extension options							1 year
Maximum borrowings under credit facility		$ 50,000,000
Line of credit facility interest-only period							1 year
Line of credit facility interest rate							4.35%
Percent of collateral properties used for aggregate borrowing capacity							45.00%
Minimum pool debt yield ratio							12.00%
Percentage of net equity proceeds							85.00%
Minimum liquidity amount							$ 3,000,000
Rate of indebtedness							30.00%
Percentage of required loan to value ratio							45.00%
Secured debt							$ 9,000,000
Amended Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Total leverage ratio							40.00%
Minimum fixed charge ratio							150.00%
Maximum fixed charge ratio							350.00%
Amended Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Total leverage ratio							25.00%
Amended Revolving Credit Facility | Subsequent Event
Debt Instrument [Line Items]
Revolving loan maturity date	Feb. 18, 2019
Maximum borrowings under credit facility									$ 28,000,000
Amended Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							2.25%
Amended Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							1.25%
Amended Revolving Credit Facility | Fed Funds Rate Plus
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							0.50%
Amended Revolving Credit Facility | Unused Fee | Unused Maximum Potential Amount Greater Than or Equal to 50%
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							0.25%
Amended Revolving Credit Facility | Unused Fee | Unused Maximum Potential Amount Less Than 50%
Debt Instrument [Line Items]
Line of credit facility applicable interest rate							0.20%
Amended Revolving Credit Facility | First Mortgage Liens
Debt Instrument [Line Items]
Number of mortgaged properties | Property							14
[1]	(Unaudited)

Future Principal Payment Requir

Future Principal Payment Requirements on Outstanding Secured Debt (Detail) - USD ($)		Sep. 30, 2018		Dec. 31, 2017
Long Term Debt Maturities Repayments Of Principal [Line Items]
2,018		$ 0
2,019	[1]	9,000,000
2,020		0
2,021		4,092,474
2,022		0
2023 and thereafter		0
Total payments		13,092,474
Non-revolving debt issuance costs, net		(124,852)	[2]	$ (465,378)
Total		12,873,428	[2]	5,594,779
Non Revolving Financing
Long Term Debt Maturities Repayments Of Principal [Line Items]
Non-revolving debt issuance costs, net		$ (219,046)		$ (300,000)
[1]	Such amount is outstanding under the Amended KeyBank Facility. Subsequent to September 30, 2018 the maturity was extended to February 18, 2019
[2]	(Unaudited)

Future Principal Payment Requ_2

Future Principal Payment Requirements on Outstanding Secured Debt (Parenthetical) (Detail)	Dec. 20, 2017	Sep. 30, 2018
Amended Revolving Credit Facility
Long Term Debt Maturities Repayments Of Principal [Line Items]
Revolving loan maturity date	Dec. 20, 2018	Feb. 18, 2019

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	Oct. 01, 2017	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Mar. 31, 2018
Related Party Transaction [Line Items]
Maximum period for reimbursement of offering cost			60 days
Maximum offering cost rate			3.50%
Reimbursement of Organization and Offering Costs		$ 0	$ 0
Gross proceeds from Public Offering, threshold percentage of expenses for reimbursement		15.00%	15.00%
Monthly asset management fee			0.04167%
Monthly asset management fee one twelfth of less than one percentage of asset value payable			one-twelfth of 0.5
Disposition fees percentage of sale price of property			1.00%
Operating expenses reimbursement percentage of average investment in assets			2.00%
Operating expenses reimbursement percentage of net income			25.00%
Operating expenses exceed limitation			12 months
Maximum days for disclosure fact			60 days
Amended management agreement date			Oct. 1, 2017
Percentage of construction management fee	5.00%
Property management capital improvement work in excess	$ 10,000
Property management one time start-up fee	$ 3,750
Servicing Fees
Related Party Transaction [Line Items]
Self storage rental revenue		$ 2,300	$ 7,000
Strategic Storage TI Services GT JV, LLC
Related Party Transaction [Line Items]
Percentage to purchase triggering member ownership interest in joint venture at fair market value	50.00%
Percentage to sell triggering member ownership interest in joint venture at fair market value	50.00%
Threshold percentage to purchase triggering member ownership interest in joint venture at fair market value	95.00%
Operating revenue		119,000	$ 310,000
Strategic Storage TI Services GT JV, LLC | TRS
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture	50.00%
Percentage of joint venture net revenues	50.00%
Strategic Storage TI Services GT JV, LLC | SmartStop TI GT, LLC
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture	50.00%
Percentage of joint venture net revenues	50.00%
Primary Offering Dealer Manager Agreement
Related Party Transaction [Line Items]
Percentage of proceeds from sale of Class A and Class T shares			10.00%
Underwriting compensation			10.00%
Maximum percentage other non-accountable expenses			3.00%
Primary Offering Dealer Manager Agreement | Class A Common stock
Related Party Transaction [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering			7.00%
Maximum dealer manager commission fee percentage of proceeds from Primary Offering			3.00%
Primary Offering Dealer Manager Agreement | Class T Common stock
Related Party Transaction [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering			2.00%
Maximum dealer manager commission fee percentage of proceeds from Primary Offering			3.00%
Monthly stockholder servicing fee accrual description			1/365th of 1% of the purchase price per share
Monthly stockholder servicing fee accrual percentage			0.00003%
Prior Arrangement Property Management Agreement
Related Party Transaction [Line Items]
Property management agreement period			in effect from October 1, 2015 through September 30, 2017
Term of property management agreement					3 years
Renewal term of property management agreement					1 year
Period of prior written notice for termination of property management agreement					90 days
Property Management agreement, termination description			The property management agreements had a three year term and automatically renewed for successive one year periods thereafter, unless we or our Property Manager provided prior written notice at least 90 days prior to the expiration of the term. In general, if we terminated a property management agreement without cause during the initial three year term, we would have been required to pay our Property Manager a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, we could have terminated a property management agreement on 30 days prior written notice without payment of a termination fee. Our Property Manager could have terminated a property management agreement on 60 days prior written notice to us.
Notice period for property management agreement					30 days
Notice period for property management agreement by property manager					60 days
Sub Property Management Agreement
Related Party Transaction [Line Items]
Term of property management agreement	3 years				3 years
Renewal term of property management agreement	3 years				1 year
Period of prior written notice for termination of property management agreement	90 days				90 days
Property Management agreement, termination description			The sub-property management agreements between our Property Manager and Extra Space were substantially the same as the foregoing property management agreements. Under the sub-property management agreements, our Property Manager paid Extra Space a monthly management fee for each property equal to the greater of $2,500 or 6% of the gross revenues, plus reimbursement of Extra Space’s costs of managing the properties; provided, however that no management fee was due and payable to Extra Space for the months of January and July each year during the term. Extra Space had the exclusive right to offer tenant insurance to the tenants and was entitled to all of the benefits of such tenant insurance. The sub-property management agreements also had a three year term and automatically renewed for successive one year periods thereafter, unless our Property Manager or Extra Space provided prior written notice at least 90 days prior to the expiration of the term. In general, if our Property Manager terminated a sub-property management agreement without cause during the initial three year term, it would have been required to pay Extra Space a termination fee equal to the Set-Up Amount, reduced by 1/36th of the Set-Up Amount for every full month of the term that had elapsed. After the end of the initial three year term, our Property Manager could have terminated a sub-property management agreement on 30 days prior written notice without payment of a termination fee. Extra Space could have terminated a sub-property management agreement on 60 days prior written notice to our Property Manager.
Notice period for property management agreement					30 days
Notice period for property management agreement by property manager	60 days				60 days
Property management monthly management fee due and payable for January and July					$ 0
Property management termination effective period	Oct. 1, 2017
Property Management agreement, termination description			In connection with the termination of each sub-property management agreement, each corresponding property management agreement was amended effective as of October 1, 2017. Pursuant to the amended property management agreements, our Property Manager receives: (i) a monthly management fee for each property equal to the greater of $3,000 or 6% of the gross revenues from the properties plus reimbursement of the Property Manager’s costs of managing the properties and (ii) a construction management fee equal to 5% of the cost of construction or capital improvement work in excess of $10,000. In addition, we agreed with our Property Manager or an affiliate to share equally in the net revenue attributable to the sale of tenant insurance at our properties. The property management agreements have a three year term and automatically renew for successive three year periods thereafter, unless we or our Property Manager provide prior written notice at least 90 days prior to the expiration of the term. After the end of the initial three year term, either party may terminate a property management agreement generally upon 60 days prior written notice. With respect to each new property we acquire for which we enter into a property management agreement with our Property Manager we will also pay our Property Manager a one-time start-up fee in the amount of $3,750.
Sub Property Management Agreement | Property Operating Expenses
Related Party Transaction [Line Items]
Aggregate costs incurred in connection with property management change				$ 200,000
Transfer Agent Agreement
Related Party Transaction [Line Items]
One-time initial setup fee paid			$ 50,000
Term of transfer agent agreement			3 years
Renewal term of transfer agent agreement			1 year
written notice for termination of transfer agent agreement			90 days
Transfer Agent Agreement Description			The initial term of the Transfer Agent Agreement is three years, which term will be automatically renewed for one year successive terms, but either party may terminate the Transfer Agent Agreement upon 90 days’ prior written notice. In the event that we terminate the Transfer Agent Agreement, other than for cause, we will pay our Transfer Agent all amounts that would have otherwise accrued during the remaining term of the Transfer Agent Agreement; provided, however, that when calculating the remaining months in the term for such purposes, such term is deemed to be a 12 month period starting from the date of the most recent annual anniversary date
The advisor | Affiliates
Related Party Transaction [Line Items]
Percentage owned by affiliate in Advisor			2.50%
SmartStop Asset Management
Related Party Transaction [Line Items]
Percentage of non-voting equity interest			15.00%
Minority interest						50.00%
R E I T Merger | Strategic Storage Operating Partnership I I L P
Related Party Transaction [Line Items]
Disposition fee to be paid to advisor		3,700,000	$ 3,700,000
Subordinated distribution to be paid to advisor		$ 4,000,000	$ 4,000,000
Units of limited partnership interest advisor will receive			1.127
Public Offering
Related Party Transaction [Line Items]
Rate of acquisition fees of purchase price of contract		1.75%	1.75%
Maximum
Related Party Transaction [Line Items]
Financing fee			0.50%
Commission percentage of sale price of property			6.00%
Maximum | Prior Arrangement Property Management Agreement
Related Party Transaction [Line Items]
Signage and set-up costs associated with converting per property to extra space brand					25,000
Minimum | Prior Arrangement Property Management Agreement
Related Party Transaction [Line Items]
Property management monthly management fee for each property					$ 2,500
Property management monthly management fee, percentage on gross revenue					6.00%
Minimum | Sub Property Management Agreement
Related Party Transaction [Line Items]
Property management monthly management fee for each property	$ 3,000				$ 2,500
Property management monthly management fee, percentage on gross revenue	6.00%				6.00%

Summary of Related Party Costs

Summary of Related Party Costs (Detail) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2018		Dec. 31, 2017
Related Party Transaction [Line Items]
Related party costs, Incurred	$ 4,161,962		$ 20,195,665
Related party costs, Paid	4,696,511		17,753,112
Related party costs, Payable	2,871,539	[1]	3,406,088
Operating expenses (including organizational costs)
Related Party Transaction [Line Items]
Related party costs, Incurred	1,004,092		770,835
Related party costs, Paid	930,557		723,044
Related party costs, Payable	131,241		57,706
Transfer Agent Expenses
Related Party Transaction [Line Items]
Related party costs, Incurred	140,033		0
Related party costs, Paid	136,246		0
Related party costs, Payable	3,787		0
Asset management fees
Related Party Transaction [Line Items]
Related party costs, Incurred	881,081		736,757
Related party costs, Paid	896,706		728,382
Related party costs, Payable	0		15,625
Property management fees
Related Party Transaction [Line Items]
Related party costs, Incurred	957,553		1,018,875
Related party costs, Paid	953,528		1,018,875
Related party costs, Payable	4,025		0
Acquisition costs
Related Party Transaction [Line Items]
Related party costs, Incurred	172,800		2,023,134
Related party costs, Paid	208,450		1,993,908
Related party costs, Payable	0		35,650
Debt Issuance Costs, Capitalized
Related Party Transaction [Line Items]
Related party costs, Incurred	61,722		3,983
Related party costs, Paid	61,722		3,983
Related party costs, Payable	0		0
Acquisition Costs, Capitalized
Related Party Transaction [Line Items]
Related party costs, Incurred	944,681		150,000
Related party costs, Paid	935,672		150,000
Related party costs, Payable	9,009		0
Selling Commissions, Additional Paid In Capital
Related Party Transaction [Line Items]
Related party costs, Incurred	0		9,205,704
Related party costs, Paid	0		9,205,704
Related party costs, Payable	0		0
Dealer Manager fees, Additional Paid In Capital
Related Party Transaction [Line Items]
Related party costs, Incurred	0		3,057,148
Related party costs, Paid	0		3,156,174
Related party costs, Payable	0		0
Stockholder Servicing Fees, Additional Paid In Capital
Related Party Transaction [Line Items]
Related party costs, Incurred	0		3,063,039
Related party costs, Paid	573,630		606,852
Related party costs, Payable	2,723,477		3,297,107
Offering costs, Additional Paid In Capital
Related Party Transaction [Line Items]
Related party costs, Incurred	0		166,190
Related party costs, Paid	0		166,190
Related party costs, Payable	$ 0		$ 0
[1]	(Unaudited)

Summary of Related Party Cost_2

Summary of Related Party Costs (Parenthetical) (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Related party costs, Paid	$ 4,696,511	$ 17,753,112
Property management fees
Related Party Transaction [Line Items]
Related party costs, Paid	953,528	1,018,875
Property management fees | Sub-property manager
Related Party Transaction [Line Items]
Related party costs, Paid	0	926,000
Selling Commissions, Additional Paid In Capital
Related Party Transaction [Line Items]
Related party costs, Paid	$ 0	$ 9,205,704
Selling Commissions, Additional Paid In Capital | Dealer Manager | Class T Common stock
Related Party Transaction [Line Items]
Monthly stockholder servicing fee accrual description	1/365th of 1% of the purchase price per share

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Apr. 19, 2018	May 05, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Commitments and Contingencies [Line Items]
Issuance of shares pursuant to distribution reinvestment plan				$ 3,904,447	$ 3,368,914
Distributions
Commitments and Contingencies [Line Items]
Issuance of shares pursuant to distribution reinvestment plan				$ 1,400,000		$ 211,000
Share issued under distribution reinvestment plan			0	145,000		22,000
Maximum
Commitments and Contingencies [Line Items]
Issuance of shares pursuant to distribution reinvestment plan		$ 115,600,000
Class A Common stock
Commitments and Contingencies [Line Items]
Estimated value per common share	$ 11.58
Issuance of shares pursuant to distribution reinvestment plan				$ 257
Share issued under distribution reinvestment plan				258,090
Class T Common stock
Commitments and Contingencies [Line Items]
Estimated value per common share	11.58
Issuance of shares pursuant to distribution reinvestment plan				$ 79
Share issued under distribution reinvestment plan				79,572
Distribution Reinvestment Plan
Commitments and Contingencies [Line Items]
Amendment, suspension or termination period for DRP offering				10 days
Sales commissions, dealer manager fee, or stockholder servicing fee payable			$ 0	$ 0
Distribution Reinvestment Plan | Class A Common stock
Commitments and Contingencies [Line Items]
Estimated value per common share	11.58
Share issued under distribution reinvestment plan				500,000
Distribution Reinvestment Plan | Class T Common stock
Commitments and Contingencies [Line Items]
Estimated value per common share	$ 11.58
Share issued under distribution reinvestment plan				200,000
Share Redemption Program
Commitments and Contingencies [Line Items]
Amendment, suspension, resumption or termination period				30 days
Maximum weighted average number of shares outstanding percentage				5.00%
Share Redemption Program | Minimum
Commitments and Contingencies [Line Items]
Shareholders share holding period				1 year
DRP Offering and Share Redemption Program
Commitments and Contingencies [Line Items]
Amendment, suspension or termination period for DRP offering				10 days
Amendment, suspension, resumption or termination period				30 days
Distribution reinvestment plan description				distributions declared by the Board for the month of August 2018, which were paid in September 2018, and continuing until such time as the Board may approve the resumption of the DRP Offering, if ever, all distributions declared by the Board were paid to our stockholders in cash.
Share redemption program description				redemption requests received during the second quarter of 2018 were processed on July 31, 2018, and redemption requests received during the third quarter of 2018 ordinarily would have needed to be received on or prior to September 30, 2018 and would have been processed on October 31, 2018. However, the effective date of the aforementioned suspension of our share redemption program occurred prior to September 30, 2018. Accordingly, any redemption requests received during the third quarter of 2018, or any future quarter, will not be processed until such time as the Board may approve the resumption of our share redemption program, if ever
Operating Partnership Redemption Rights
Commitments and Contingencies [Line Items]
Number of shares issuable upon conversion of partnership units				1
Requisite minimum outstanding period for conversion eligibility				1 year

Stock for Redemptions Based on

Stock for Redemptions Based on Number of Years Stock Held (Detail)	9 Months Ended
	Sep. 30, 2018
Less than 1
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Redemption price	0.00%
1 or more but less than 3
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Redemption price	90.00%
3 or more but less than 4
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Redemption price	95.00%
4 or more
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Redemption price	100.00%

Potential Acquisitions - Additi

Potential Acquisitions - Additional Information (Detail) $ in Thousands	Nov. 09, 2017USD ($)Subsidiary	Apr. 05, 2017USD ($)	Sep. 30, 2018
Riggs Road Preferred Equity
Potential Asset Acquisitions [Line Items]
Number of subsidiaries made investment in preferred equity | Subsidiary	1
Preferred equity investment	$ 1,250
Preferred return paid quarterly	12.00%
Riggs Road Property
Potential Asset Acquisitions [Line Items]
Potential purchase price of property		$ 10,000
Acquisition Date			Apr. 5, 2017
Earnest money amount		$ 1,000

Summary of Quarterly Financial

Summary of Quarterly Financial Information (Detail) - USD ($)	3 Months Ended					9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Quarterly Financial Information [Line Items]
Total revenues	$ 5,224,659	$ 4,787,406	$ 4,357,428	$ 4,228,847	$ 3,804,702	$ 14,369,493	$ 9,557,514
Total operating expenses	5,843,047	5,764,547	4,810,783	4,191,889	5,693,427	16,418,377	13,410,579
Operating income (loss)	(618,388)	(977,141)	(453,355)	36,958	(1,888,725)	(2,048,884)	(3,853,065)
Net income (loss)	(908,093)	(1,195,603)	(623,313)	55,270	(1,791,570)	(2,727,009)	(4,011,212)
Net income (loss) attributable to the common stockholders	$ (907,344)	$ (1,194,774)	$ (622,844)	$ 55,455	$ (1,790,415)	$ (2,724,962)	$ (4,007,581)
Class A Common stock
Schedule Of Quarterly Financial Information [Line Items]
Net loss per Class A Share-basic and diluted	$ (0.03)	$ (0.04)	$ (0.02)	$ 0	$ (0.07)	$ (0.10)	$ (0.18)
Class T Common stock
Schedule Of Quarterly Financial Information [Line Items]
Net loss per Class A Share-basic and diluted	$ (0.03)	$ (0.04)	$ (0.02)	$ 0	$ (0.07)	$ (0.10)	$ (0.18)

Declaration of Distributions -

Declaration of Distributions - Additional Information (Detail)	Sep. 26, 2018$ / shares
Class A Common stock
Schedule Of Stockholders Equity [Line Items]
Common stock daily distribution declared	$ 0.0013698630
Cash distribution record date start	Oct. 1, 2018
Cash distribution record date end	Dec. 31, 2018
Class T Common stock
Schedule Of Stockholders Equity [Line Items]
Common stock daily distribution declared	$ 0.0013698630
Cash distribution record date start	Oct. 1, 2018
Cash distribution record date end	Dec. 31, 2018
Common stock daily distribution paid	$ 0.0011

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)	Nov. 06, 2018	Oct. 24, 2018	Dec. 20, 2017	Sep. 30, 2018	Dec. 20, 2018
Amended Revolving Credit Facility
Subsequent Event [Line Items]
Revolving loan maturity date			Dec. 20, 2018	Feb. 18, 2019
Maximum borrowings under credit facility			$ 50,000,000
Subsequent Event | Amended Revolving Credit Facility
Subsequent Event [Line Items]
Revolving loan maturity date		Feb. 18, 2019
Maximum borrowings under credit facility					$ 28,000,000
Deer Springs Property | Subsequent Event
Subsequent Event [Line Items]
Purchase price of property	$ 9,200,000
Acquisition fees incurred	$ 200,000