Annual report pursuant to Section 13 and 15(d)

ORGANIZATION AND NATURE OF OPERATIONS

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ORGANIZATION AND NATURE OF OPERATIONS
12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
ORGANIZATION AND NATURE OF OPERATIONS
ORGANIZATION AND NATURE OF OPERATIONS
National Storage Affiliates Trust was organized in the state of Maryland on May 16, 2013 and is a fully integrated, self-administered and self-managed real estate investment trust focused on the self storage sector. As used herein, "NSA," the "Company," "we," "our," and "us" refers to National Storage Affiliates Trust and its consolidated subsidiaries, except where the context indicates otherwise. The Company has elected and believes that it has qualified to be taxed as a real estate investment trust for U.S. federal income tax purposes ("REIT") commencing with its taxable year ended December 31, 2015.
Through its controlling interest as the sole general partner of NSA OP, LP (its "operating partnership"), a Delaware limited partnership formed on February 13, 2013, the Company is focused on the ownership, operation, and acquisition of self storage properties located within the top 100 MSAs in the United States. Pursuant to the Agreement of Limited Partnership (as amended, the "LP Agreement") of its operating partnership, the Company's operating partnership is authorized to issue preferred units, Class A Units ("OP units"), different series of Class B Units ("subordinated performance units"), and Long-Term Incentive Plan Units ("LTIP units"). The Company also owns certain of its self storage properties through other consolidated limited partnership subsidiaries of its operating partnership, which the Company refers to as "DownREIT partnerships." The DownREIT partnerships issue equity ownership interests that are intended to be economically equivalent to the Company's OP units ("DownREIT OP units") and subordinated performance units ("DownREIT subordinated performance units").
The Company owned 499 self storage properties in 26 states and Puerto Rico with approximately 30.4 million rentable square feet (unaudited) in approximately 242,000 storage units as of December 31, 2018. These properties are managed with local operational focus and expertise by the Company and its participating regional operators ("PROs"). These PROs are SecurCare Self Storage, Inc. and its controlled affiliates ("SecurCare"), Kevin Howard Real Estate Inc., d/b/a Northwest Self Storage and its controlled affiliates ("Northwest"), Optivest Properties LLC and its controlled affiliates ("Optivest"), Guardian Storage Centers LLC and its controlled affiliates ("Guardian"), Move It Self Storage and its controlled affiliates ("Move It"), Arizona Mini Storage Management Company d/b/a Storage Solutions and its controlled affiliates ("Storage Solutions"), Hide-Away Storage Services, Inc. and its controlled affiliates ("Hide-Away") and an affiliate of Shader Brothers Corporation d/b/a Personal Mini Storage ("Personal Mini").
In October 2018, the Company entered into definitive agreements with affiliates of Southern Self Storage, LLC d/b/a Southern Self Storage of Palm Beach Gardens, Florida, to add Southern Self Storage ("Southern") as the Company's ninth PRO. In January 2019, the Company completed the initial contribution transaction with Southern. As discussed in Note 15, in February 2019, the Company entered into definitive agreements with affiliates of Investment Real Estate Management, LLC d/b/a Moove In Self Storage of York, Pennsylvania to add Moove In Self Storage ("Moove In") as the Company's tenth PRO.
As of December 31, 2018, the Company also managed through its property management platform an additional portfolio of 176 properties owned by the Company's unconsolidated real estate ventures. These properties contain approximately 12.6 million rentable square feet, configured in approximately 103,000 storage units and located across 22 states. The Company owns a 25% equity interest in each of its unconsolidated real estate ventures.
As of December 31, 2018, in total, the Company operated and held ownership interests in 675 self storage properties located across 34 states and Puerto Rico with approximately 43.0 million rentable square feet in approximately 345,000 storage units.