On January 22, 2026, StorageMart completed the acquisition of 15 self-storage facilities across New York City from Carlyle Group affiliates for $1.03 billion. The deal totaled 1.3 million rentable square feet and 25,498 storage units across Brooklyn, Manhattan, Queens, and Staten Island. It was the second-largest self-storage transaction in New York City history, behind only StorageMart's own 2021 purchase of Manhattan Mini Storage.
The headline number attracted attention. The structure underneath it should attract more. StorageMart holds a 20% stake in the joint venture that closed the deal. An unnamed sovereign wealth fund controls the remaining 80%. Carlyle, the seller, remained as asset manager for the sovereign investor after the transaction closed. The platform operating the facilities is American. The capital is not.
That structure is not unique to this deal. It is increasingly the template for how the largest self-storage acquisitions in gateway and high-barrier markets are getting done in 2026.
Why Sovereign Wealth Funds Are Treating Self-Storage as Infrastructure
Sovereign wealth funds are long-duration capital. They do not need a five-year exit. They are not running against a fund maturity wall. They want stable, inflation-linked cash flows from an asset class with demonstrable demand resilience, and they want them at yields that exceed what they can source in their home markets or in competing asset classes.
U.S. self-storage delivers on that thesis. Class A facilities in gateway markets are trading at cap rates averaging 5.0% to 5.5%, which compares favorably to the compressed yields on European logistics and residential assets where many sovereign funds are already overweight. European self-storage, where the market is a fraction of the U.S. in scale and maturity, trades at even tighter spreads. The U.S. offers the yield premium, the operational sophistication, and the market depth that sovereign investors require to deploy capital at size.
StorageMart's international backing dates to October 2020, when Singapore's GIC, which manages Singapore's foreign reserves across more than $100 billion in assets in 40-plus countries, invested alongside Bill Gates' Cascade Investment LLC at a valuation of $2.7 billion. That early-stage institutional endorsement of the platform built the balance sheet that made the 2026 NYC acquisition possible. The 2026 JV is the next step in the same logic: sovereign capital wants self-storage exposure, and it is willing to take a minority operating role to get access to a proven platform.
Canadian Operators Are Running a Parallel Playbook
While sovereign wealth funds are backing platform acquisitions in gateway markets, Canadian operators are building direct U.S. portfolios through more traditional acquisition programs.
Mini Mall Storage Properties Trust, the Calgary, Alberta-based platform run by Avenue Living Asset Management, entered 2026 with more than 250 facilities and 10.8 million square feet of rentable storage space across North America. In December 2025, it closed the largest inaugural unsecured debenture offering in Canadian real estate history, raising $750 million in capital earmarked for acquisitions and refinancing. That capital is being deployed.
Mini Mall acquired 11 properties from Metro Self Storage in a cross-border deal targeting facilities in Georgia and Illinois. The portfolio is consistent with Mini Mall's acquisition profile: legacy-operated, drive-up assets in secondary and tertiary U.S. markets with strong cash flow potential, where centralized operations and technology upgrades can compress expenses and improve yield. The markets (Douglasville, Lawrenceville, Palatine, Melrose Park) are not gateway cities. They are the kind of mid-market U.S. corridors where Canadian platforms have found it easier to compete with domestic buyers on price.
StorageMart itself operates across Canada, the United Kingdom, and the United States, and now surpasses $10 billion in assets under management. It is not a U.S. company doing business in Canada. It is a North American platform with deep access to cross-border institutional capital that happens to operate in multiple currencies and regulatory environments.
What the Transaction Data Shows
Non-REIT buyers, a category that includes cross-border capital, sovereign-backed platforms, and domestic private operators, accounted for 85% of U.S. self-storage acquisitions in Q1 2025. That figure settled to 78% in Q3 2025, when total transaction volume reached $1.6 billion across more than 260 facilities, a 62% increase from Q3 2024. REITs paid an average of $146 per square foot in Q3 2025. Non-REIT buyers averaged $133 per square foot, indicating that the institutionally backed non-REIT buyer segment is competing aggressively across the quality spectrum, not just on distressed or value-add product.
The self-storage investment market has reopened meaningfully after two years of compressed transaction volume. The bid-ask spread that stalled deals in 2022 and 2023 has narrowed as sellers have adjusted expectations and buyers have locked in financing in a more stable rate environment. The capital that is flowing back into the sector in size is not domestic PE alone. The largest single transactions in 2026 are being structured with cross-border institutional backing.
"StorageMart will surpass the major milestone of $10 billion in assets under management, further solidifying its position as the largest privately-owned self-storage company in the world."
- StorageMart, Q1 2026 Portfolio Expansion Announcement
Which Markets Are Attracting International Capital
Gateway markets with high barriers to new supply are the primary focus for sovereign and cross-border capital. New York City is the clearest example: StorageMart's January 2026 acquisition targeted a market where permitting, land costs, and zoning constraints make meaningful new competition structurally unlikely. Boston, Washington D.C., and coastal California metros share the same characteristics. In these markets, existing supply is relatively stable, existing operators have pricing power, and the cash flows are predictable over the kind of hold horizons sovereign funds require.
Canadian platforms like Mini Mall are pursuing a different strategy. Rather than competing for trophy gateway assets where domestic REITs and sovereign funds are both active, Canadian operators are targeting secondary markets, including the Southeast and Midwest, where seller fragmentation is highest and local competition from institutional capital is thinnest. The $750 million Mini Mall raised in late 2025 gives it the balance sheet to run a sustained acquisition program across those markets without needing to win any single trophy deal.
The pattern points toward a bifurcation that is already visible in cap rates. Gateway assets with sovereign backing are trading in the 5.0% to 5.5% range. Secondary market acquisitions by smaller Canadian platforms and domestic PE funds are executing at 6.5% to 8.0%. Both ends of the market are active. The buyers are different.
What This Means for Domestic Operators Competing for Deals
Domestic buyers competing for gateway-market assets in 2026 are not benchmarking against other domestic PE funds. They are benchmarking against sovereign wealth funds that do not need to hit a 15% IRR to satisfy investors. A sovereign fund deploying capital at a 5.0% stabilized cap rate in Manhattan is not making the same underwriting decisions as a domestic operator running a 7-year fund with a required return. The cost of capital is structurally different, and it shows in bidding.
Domestic regional operators retain a meaningful advantage in markets where relationships drive deal flow. Independent sellers in secondary and tertiary markets often prefer a buyer they know, one with operating experience in the local market and a straightforward closing process, over a cross-border platform managing from Calgary or a JV structure that requires sovereign fund approval. That advantage is real. It does not extend to the top tier of large-portfolio, gateway-market deals.
The operator thesis for the next two years is becoming clearer: international and sovereign capital will dominate the largest gateway transactions, Canadian platforms will run systematic acquisition programs in the secondary U.S. markets, and domestic private buyers will find their best opportunities where relationship-based deal sourcing still outcompetes institutional process.
The Numbers Worth Writing Down
- StorageMart acquired 15 NYC self-storage facilities from Carlyle Group for $1.03 billion in January 2026, the second-largest NYC self-storage deal ever
- The JV structure: StorageMart holds 20%; an unnamed sovereign wealth fund holds 80%
- GIC (Singapore) and Cascade Investment (Bill Gates) backed StorageMart at a $2.7 billion valuation in October 2020
- Mini Mall Storage (Calgary) operates 250-plus properties and 10.8 million square feet across North America
- Mini Mall closed a $750 million debenture offering in December 2025, the largest inaugural unsecured debenture in Canadian real estate history
- Mini Mall acquired 11 U.S. properties (Georgia and Illinois) from Metro Self Storage
- Non-REIT buyers absorbed 78% of Q3 2025 U.S. self-storage acquisitions; 85% in Q1 2025
- Q3 2025 total transaction volume: $1.6 billion across 260-plus facilities, up 62% year-over-year
- Class A gateway cap rates: 5.0% to 5.5%; secondary market deals: 6.5% to 8.0%
The Capital Stack Is International Now
The U.S. self-storage industry spent its first four decades as an almost exclusively domestic business. The operators were American. The capital was American. The acquirers were American REITs or domestic PE funds.
That is no longer the default. The two largest deals in New York City self-storage history were both closed by StorageMart, a company backed by Singapore's sovereign wealth fund and Bill Gates. Canada's largest self-storage capital raise just went to a platform actively buying U.S. properties. The unnamed sovereign fund backing 80% of StorageMart's latest JV is, by definition, not a domestic U.S. institution.
For domestic operators and buyers, the question is not whether international capital will continue to compete in this sector. It is already competing, and it is winning the largest deals. The question is which parts of the market remain accessible to domestic capital on domestic return terms, and how long those pockets stay that way.
Sources
- StorageMart Builds on Expanding NYC Portfolio With $1B Acquisition, Commercial Observer
- StorageMart Acquires 1.3 Million Rentable Square Feet in the Second-Largest Self Storage Transaction in New York City History, GlobeNewswire
- StorageMart and Manhattan Mini Storage Expand Portfolio with New Facilities and Strategic Acquisitions in Q1 2026, GlobeNewswire
- Mystery Investor Backed Carlyle's $1B Self-Storage Sale, The Real Deal
- StorageMart Receives Self-Storage Investment From Bill Gates, GIC, Inside Self-Storage
- Mini Mall Storage Expands with Metro Self Storage Acquisition, Modern Storage Media
- Mini Mall Storage Properties Closes Largest Inaugural Unsecured Debenture Offering in Canadian Real Estate History, GlobeNewswire
- Self Storage Sales Reach Nearly $1.6B In Q3 2025 As Transaction Activity Jumps By 62%, StorageCafe