Blue Door Property I, DST Fully Subscribes $29 Million All-Cash Self-Storage DST Offering

Blue Door AM I, LLC, an indirect subsidiary of Strategic Storage Growth Trust III, Inc. ("SSGT III"), and an affiliate of SmartStop Self Storage REIT, Inc. ("SmartStop") (NYSE:SMA), announced that its Delaware Statutory Trust offering, Blue Door Property I, DST is now fully subscribed.

The offering, which provided accredited investors with the opportunity to participate in institutional-quality self-storage assets through a 1031 exchange or direct cash investment, reached its maximum equity raise of $29.75 million. Blue Door Property I, DST is part of SmartStop's growing platform of tax-advantaged real estate programs designed to deliver income potential, portfolio diversification, and capital preservation.

"The full subscription of Blue Door Property I, DST underscores the growing demand for tax-deferred solutions among commercial exchange buyers and the appeal of institutional-quality self-storage investments for Main Street investors," said H. Michael Schwartz, Chairman and CEO of SmartStop. "The long-term resiliency of the self-storage sector continues to make it a compelling destination for capital, and we remain committed to sourcing and managing high-quality assets that support stable income, preservation of capital, and consistent performance for our investors."

About Strategic Storage Growth Trust III, Inc. (SSGT III):

Strategic Storage Growth Trust III, Inc. ("SSGT III") is a Maryland corporation that elected to qualify as a REIT for federal income tax purposes. SSGT III's primary investment strategy is to invest in growth-oriented self-storage facilities and related self-storage real estate investments in the United States and Canada. As of November 24, 2025, SSGT III has a portfolio of seven operating properties in the United States, comprising approximately 6,040 units and 655,275 net rentable square feet; five operating properties in Canada, comprising approximately 3,180 units and 326,190 net rentable square feet; and joint venture interests in three developments in two Canadian provinces (Québec and British Columbia). In addition, Blue Door Asset Management I, a subsidiary of SSGT III, serves as the sponsor of three Delaware Statutory Trusts, which currently own eight operating properties in the United States comprising approximately 5,420 units and 697,400 net rentable square feet.

About SmartStop Self Storage REIT, Inc. (SmartStop):

SmartStop Self Storage REIT, Inc. ("SmartStop") (NYSE:SMA), is a self-managed REIT with a fully integrated operations team of more than 1,000 self-storage professionals focused on growing the SmartStop® Self Storage brand. SmartStop, through its indirect subsidiary SmartStop REIT Advisors, LLC, also sponsors other self-storage programs, and through its indirect subsidiary Argus Professional Storage Management, LLC, offers third-party management services in the U.S. and Canada. As of November 24, 2025, SmartStop has an owned or managed portfolio of more than 460 operating properties in 34 states, the District of Columbia, and Canada, comprising approximately 270,000 units and more than 35 million rentable square feet. SmartStop and its affiliates own or manage 49 operating self-storage properties in Canada, which total approximately 42,200 units and 4.3 million rentable square feet. Additional information regarding SmartStop is available at www.smartstopselfstorage.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20251124026537/en/

David Corak

SVP of Corporate Finance and Strategy

SmartStop Self Storage REIT, Inc.

[email protected]