Alterra IOS announces closing of $189M loan commitment from Blackstone Mortgage Trust

Alterra IOS (“Alterra”), a prominent player in the industrial outdoor storage (“IOS”) sector that has acquired over 300 sites nationwide, today announced the closing of $189 million in financing from Blackstone Mortgage Trust Inc.. The funding was secured for assets acquired in Alterra’s latest venture. Alterra has now secured over $1 billion in lender financing for the fund, which closed in May 2024 at $925 million in total commitments, exceeding the original fundraising goal of $750 million and reaching its hard cap.

The funding from Blackstone Mortgage Trust backs 49 IOS sites across 22 states, totaling approximately 235 usable acres.

Scott Whittle, Chief Financial Officer for Alterra IOS said, “We are thrilled to close our first financing with the Blackstone team and to add another leading institution to a growing list of capital providers supporting our IOS platform. This closing underscores the strength of our portfolio and the continued demand for well-located industrial outdoor storage assets.”

Austin Pena, Executive Vice President of Investments at Blackstone Mortgage Trust said, “Blackstone Mortgage Trust is actively deploying capital into compelling investment opportunities in today’s market, including the IOS sector, which benefits from similar secular tailwinds to logistics, one of Blackstone’s highest conviction themes. We are excited to provide this financing solution to Alterra and support the next phase of growth for their IOS platform.”

This financing comes on the heels of several significant transactions for the Alterra team in 2024, including the sale of an institutional-grade portfolio of 51 IOS assets to Peakstone Realty Trust in November for $490 million. Alterra is one of the nation’s largest owners of IOS, having acquired more than 300 properties in 36 states across the U.S. As a vertically integrated investor, developer, and operator of IOS, Alterra is uniquely positioned to serve companies in search of national connectivity to store equipment, machinery, vehicle fleets, shipping containers, building materials, retail inventory, and more.

Justin Horowitz of Cooper Horowitz worked with Alterra IOS Venture III to market and source the financing.