U.S. Self-Storage Outlook 2026: Vacancy Improvement Emerges as Development Slows

U.S. Self-Storage Outlook 2026: Can Slowing Supply Support a Market Recovery?

The U.S. self-storage sector is entering a more balanced phase as new supply continues to taper. Developers are projected to expand inventory by 2.2 percent in 2026, the smallest delivery slate since 2016, while national vacancy is forecast to decline to 10 percent by year-end. Although asking rents remain below their 2022 peak and are expected to decline modestly this year, the slowdown in construction is easing competitive pressure. Future demand growth may also benefit from pent-up household formation among younger adults, though recovery is expected to vary significantly by market.

Why Is the Self-Storage Sector Stabilizing?

The pace of vacancy growth has slowed, creating early signs of stabilization across the sector. Nationwide vacancy remained elevated through June, but fewer near-term completions are expected to help support occupancy improvement during the second half of the year.  

Vacancy is forecast to decline by 20 basis points year over year to 10 percent by the end of 2026. The expected improvement stems largely from stronger tenant retention and lower move-out activity rather than a significant increase in new customer demand.  

The relationship between asking rents and stabilized rents also highlights improving conditions. While average asking rents remain roughly 11 percent below their 2022 peak, stabilized rent have recovered to within one-half percent of recent highs. This indicates that existing demand remains relatively resilient even as newly delivered facilities compete aggressively on price.

What Is Limiting Rent Growth?

New supply remains the primary driver of rent pressure. 

The average asking rent is projected to decrease 0.8 percent in 2026 to approximately $1.18 per square foot, extending a four-year streak of annual declines. The national average remains about 12 percent below the market peak reached in 2022.  

Rent performance is not uniform. Markets with limited recent development are better positioned for rent growth, while construction-heavy metros continue to experience pricing pressure as operators compete for tenants. Supply impacts have been particularly visible in portions of the Sun Belt, where street rates have softened more than in other regions.  

Housing market conditions are also influencing demand. Lower levels of home sales and relocation activity continue to limit the number of customers entering the storage market through moves, downsizing, or household transitions.. 

How Could Household Formation Affect Future Demand?

Household formation has slowed considerably, but that trend may represent future demand potential for the sector. 

The number of U.S. households grew by approximately 0.4 percent year over year as of June 2026, roughly half the prior decade's average growth rate. Household formation reached its lowest level since before 2000 when excluding recessionary periods.  

At the same time, a growing share of younger adults continue to live with their parents. According to the report, 60 percent of adults aged 18 to 24 and 20 percent of adults aged 25 to 34 remained in parental households as of last year. Elevated inflation, housing affordability challenges, and labor market uncertainty are contributing to this behavior.  

Over the longer term, self-storage demand could benefit if these households eventually form independently or relocate, trigger downsizing, and space reconfiguration among existing homeowners. 

Where Is Construction Activity Concentrated?

Development activity remains active but has slowed considerably compared with recent years. 

Developers completed nearly 27.8 million square feet during the first half of 2026, representing the lowest first-half completion volume since 2014. Annual completions are expected to total roughly 53 million square feet, approximately three-quarters of the previous 10-year average.  

Major completion markets during the first half of the year included:

• Atlanta 
• Dallas-Fort Worth 
• Houston 
• Orlando 
• Tampa-St. Petersburg 

These metros each expanded inventory by more than 1 million square feet during the period.  

The Western United States recorded its lowest first-half development volume since 2017, while Midwest completions reached their lowest first-half level since 2012.  

The second-half pipeline remains concentrated in Sun Belt markets, including Phoenix, Houston, Southeast Florida, Tampa-St. Petersburg, Orlando, and Dallas-Fort Worth.

How Is Investment Activity Evolving?

Transaction activity continued to recover in 2026. 

As of June, self-storage sales activity increased nearly 20 percent year over year, while total deal volume rose nearly 50 percent. Although trading activity remains below the 2022 peak, it has recovered substantially from the lows recorded in 2024.  

Larger transactions remain less active than before. Trades exceeding $20 million trail 2022 levels by 65 percent, while deals between $1 million and $10 million accounted for the majority of transaction volume over the past year.  

Regional performance varied significantly. The Mountain region led the nation with a 75 percent year-over-year increase in transactions and was the only region to exceed its 2022 activity level. The South remained the largest region for both transaction count and deal volume.  

How Are REITs Expanding Their Influence?

Public operators are increasingly extending their reach through third-party management platforms. 

Managed facilities across the three largest self-storage REITs grew at a 14.7 percent annualized rate between 2023 and 2025, reaching 3,224 facilities by June 2026. Growth in managed stores has outpaced growth in wholly owned properties.  

The report highlights significant expansion by: 

• Extra Space Storage 
• Public Storage 
• CubeSmart 

What Does the Capital Markets Environment Look Like?

Rising Treasury yields have narrowed the spread between self-storage cap rates and benchmark interest rates. 

The sector's average cap rate stood at 6.59 percent in 2026, while the 10-year Treasury increased to 4.76 percent in late August. As a result, the cap rate spread compressed largely because Treasury yields rose rather than because asset pricing improved.  

Financing sources have also shifted. Banks and credit unions represented roughly 70 percent of self-storage lending volume in 2023, but accounted for closer to half of loan activity in 2026 as debt funds, government lending sources, and CMBS lenders expanded market share.  

Credit fundamentals remain strong. Delinquency on securitized self-storage debt stood at 0.05 percent as of July, though nearly 30 percent of outstanding balances were on servicer watchlists, primarily among loans originated between 2021 and 2024. 

Recovery Drivers vs. Ongoing Challenges

Implications for Investors

• Markets with limited recent development appear positioned for stronger rent performance.  
• Transaction activity continues to improve despite remaining below the 2022 peak.  
  
• Watchlist concentrations among 2021-2024 originations could contribute to additional assets entering the market through 2027.  
• Capital remains available, though the lending mix continues to diversify.