Alterra IOS Scores $244M From Blackstone for Acquisition of 37 IOS Sites
Alterra IOS has secured $244 million in acquisition financing from Blackstone Real Estate Debt Strategies to fund the purchase of 37 industrial outdoor storage properties nationwide.
The nonrecourse loan from Blackstone’s BREDS platform will finance the 37-site purchase — spanning 27 markets, 165 acres and more than 800,000 square feet — along with future acquisitions. It pushes the total institutional debt Alterra IOS has raised past $1.8 billion since the firm’s 2016 founding. Rather than conventional mortgage financing, Alterra structured the deal as an equity pledge with Blackstone.
We appreciate Blackstone’s creativity and collaboration in helping us achieve a solution aligned with our long-term capital strategy as demand for high-quality IOS assets continues to grow.Scott Whittle, CFO, Alterra IOS (via Commercial Observer)
The financing is the latest in a string of institutional commitments to Alterra, which has acquired more than 470 IOS sites across 37 states and recently drew capital from PGIM and the Bank of Montreal. The deal signals continued institutional appetite for a sector once dominated by small, local owners.
Source: Commercial Observer, “Alterra IOS Scores $244M From Blackstone for Acquisition of 37 IOS Sites,” by Brian Pascus, June 5, 2026.
