The U.S. self-storage sector posted an average stabilized occupancy of 77.0% in Q4 2025, essentially flat year-over-year. The national figure, published by Yardi Matrix and corroborated by multiple investment research reports, masks a regional story that is anything but flat. The Midwest came in at 77.9% for Q4 2025, up 60 basis points year-over-year. The Northeast posted 76.7%, up 50 basis points. The South, which includes the Sun Belt markets where construction ran hottest through 2023 and 2024, came in at 75.0%, down 30 basis points.
The Midwest is the only major U.S. region recording meaningful occupancy improvement in 2026, and the rent data confirms it is not a rounding error. Chicago posted self-storage rent growth of 3.0% to 4.5% year-over-year in early 2026, with average rents reaching $137 per month. Detroit recorded 3.6% annual growth and was recently added to Yardi Matrix's top-30 tracked metro list, reflecting a market that has grown large enough and active enough to warrant formal institutional coverage. Minneapolis held positive rent territory through the same period, supported by a supply pipeline that stayed measured while cities across the South added inventory at rates that demand simply could not absorb.
National street rates averaged $131 per month in March 2026, down 2.2% year-over-year. In the Midwest's best markets, that national figure is almost irrelevant. The divergence is real, it is widening, and the explanation sits entirely in supply per capita.
Why Chicago's Self-Storage Market Is Performing Better Than Almost Any Other Major City
Chicago has 3.5 net rentable square feet of self-storage per capita. The national average is approximately 7.8 square feet per capita. That means Chicago enters 2026 with roughly 45% of the per-capita supply concentration present in the average U.S. market. In an industry where pricing power is directly correlated with supply scarcity, that figure is one of the most consequential data points in the entire sector.
Developers have historically underbuilt Chicago relative to its population because the economics make it difficult to do otherwise. Land costs in the Chicago metro are higher than in most secondary Sun Belt cities, entitlement timelines are longer, and the regulatory environment adds friction to new construction that does not exist in a market like Phoenix or Houston. That friction, which operators often cite as a headache when trying to build, functions as a structural barrier to oversupply. The result is a market where existing operators hold pricing power that their counterparts in undersupplied metros cannot replicate.
Chicago's +4.5% rent growth to $137 per month does not reflect an unusual surge in demand. It reflects a market where supply was never allowed to get ahead of demand in the first place. The Midwest's first positive net migration numbers in recent history, across Michigan, Minnesota, and Ohio, have added incremental demand at a moment when supply discipline was already doing the work.
How Detroit Got Back on the Institutional Map
Detroit's inclusion in Yardi Matrix's top-30 tracked metros in 2026 represents an institutional validation of what has been happening in that market for the past 18 months. The metro posted 3.6% annual self-storage rent growth in early 2026, outperforming cities that have been on institutional watchlists for years while Detroit was categorized as a secondary market with limited allocation interest.
Several dynamics converged to produce the result. Michigan posted positive net migration in the most recent census period for the first time in recent history, driven by automotive sector expansion, defense manufacturing activity, and the relocation of technology-adjacent jobs from higher-cost coastal markets. Those are not speculative demand drivers: they are employment anchors, and employment-driven household formation produces sustained storage demand.
The supply side of Detroit's equation is also favorable. Development activity in the Detroit metro never reached the pace of Sun Belt markets during the 2022 to 2024 construction cycle. Lenders were more cautious about financing new construction in a market with Detroit's historical credit associations, which turned out to function as an unintentional but effective barrier to overbuilding. The market that institutional investors were reluctant to enter during the supply boom is now among the cleaner performers in the national data.
What the Sun Belt Got Wrong, in Quantitative Terms
The contrast between the Midwest's supply discipline and the Sun Belt's overbuilding is not subtle in the numbers. Sarasota, Tampa, Orlando, and Charlotte each saw supply growth exceed 13% of existing inventory over the past three years. Houston, the most active construction market in the country, had 888,844 square feet of self-storage scheduled for delivery in 2026 alone, against a per-capita supply figure of 8.1 square feet: more than twice Chicago's level.
The RentCafe March 2026 report put the consequences into specific numbers. St. Petersburg, Florida, posted an 8.6% year-over-year rent decline to $152 per month, with a 2.3% month-over-month drop that was the steepest single-month decline in the top five. Santa Rosa, California, recorded the nation's worst annual performance at negative 9.8% to $166 per month, driven by a different dynamic (wildfire rebuilding demand cycling out), but the Sun Belt pattern of sustained negative movement is driven almost entirely by supply.
"Overbuilding in specific MSAs, including Sarasota, Phoenix, Atlanta, Tampa, Orlando, Austin, Dallas, and Charlotte, will depress returns in those markets for 12 to 36 additional months beyond the national recovery timeline."
- U.S. Self-Storage Market Institutional Analysis and Five-Year Forecast, MMcG Invest, 2026
The 12-to-36-month extension estimate is the blunt version of what the supply data implies. Markets where three-year supply growth exceeded 13% of existing inventory need two to three years of demand absorption before pricing power returns. The national recovery timeline may arrive in 2027. The Sun Belt recovery in the hardest-hit markets will arrive later.
Minneapolis and the Manageable Pipeline Story
Minneapolis does not have a dramatic rent growth number to cite. What it has is positive rent growth in a market where most comparable-size cities are negative, and a supply pipeline that analysts consistently describe as manageable. That combination, positive movement plus supply discipline, is a cleaner version of the same story Chicago and Detroit are telling.
Midwestern markets broadly benefited from development economics that made the construction boom of 2022 to 2024 less economically attractive than it was in the Sun Belt. Labor costs, land costs, construction materials costs, and municipal permitting timelines in major Midwest metros all contributed to a slower build rate. The Sun Belt offered cheaper land, faster entitlements, and a population growth narrative that attracted capital. That capital built excess supply. The Midwest's relative unattractiveness to that same capital is now showing up as occupancy advantage.
Minneapolis's per-capita supply sits well below Houston's 8.1 square feet and closer to Chicago's 3.5 range. The metro's stable employment base, anchored by healthcare, financial services, and retail distribution, did not produce the same demand surge as Sun Belt migration markets, but it also did not produce the same demand collapse when migration rates normalized. Operators in Minneapolis in 2026 are running a different playbook from operators in Tampa: steady demand, limited new supply, and pricing power that does not require concessions to sustain occupancy.
What Investors Are Taking from the Regional Data
The regional occupancy split is already influencing capital allocation. Supply-constrained Midwest metros now appear explicitly in investment outlooks from Marcus & Millichap, Matthews Real Estate, and Cushman & Wakefield as preferred alternatives to Sun Belt markets still absorbing supply. The framing is consistent: buy Midwest exposure where per-capita supply is below 5 square feet, avoid Sun Belt metros with three-year supply growth above 10% of existing inventory.
The per-capita supply screen is more predictive than metro size, urban/suburban classification, or population growth rate as a standalone variable. A market with 3.5 square feet per capita and flat population growth will outperform a market with 8.1 square feet per capita and 2% population growth in every rate environment. Chicago's March 2026 data proves it. The Sun Belt markets currently sitting at 8.0-plus square feet per capita, with additional supply still delivering in 2026, are the counter-evidence.
The Numbers Worth Writing Down
- Midwest occupancy Q4 2025: 77.9%, up 60 basis points year-over-year (only region with meaningful improvement)
- South (Sun Belt) occupancy Q4 2025: 75.0%, down 30 basis points year-over-year (weakest region)
- West occupancy Q4 2025: 79.8% (highest region); Northeast: 76.7%, up 50 basis points
- National stabilized occupancy Q4 2025: 77.0%, essentially flat year-over-year
- Chicago: +3.0-4.5% YoY rent growth; average rents $137/month; 3.5 sq ft per capita (vs. national average ~7.8)
- Detroit: +3.6% YoY rent growth; added to Yardi Matrix top-30 tracked metros in 2026
- Minneapolis: positive YoY rent growth; manageable supply pipeline
- St. Petersburg, FL: -8.6% YoY to $152/month (one of the worst-performing Sun Belt markets)
- Houston: 888,844 sq ft of new supply scheduled for 2026; 8.1 sq ft per capita
- Sun Belt markets (Sarasota, Tampa, Orlando, Charlotte): each saw supply growth exceed 13% of existing inventory over past 3 years
- Michigan, Minnesota, Ohio: first positive net migration years in recent history, supporting demand
The Midwest's Underbuilding Discount Has Become a Pricing Premium
For years, the Midwest's relative underrepresentation in self-storage development pipelines was described as a market gap: a problem to be solved by developers willing to take on the local friction. That framing ignored the other side of the equation. Markets that are difficult to build in are difficult to oversupply. The friction that kept development rates low in Chicago, Minneapolis, and Detroit is the same friction that kept per-capita supply figures well below the Sun Belt averages that are now producing multi-year rent headwinds.
The Midwest is not outperforming because demand there is exceptional. It is outperforming because supply there was disciplined, whether by design or by the economics of development in colder-climate, higher-cost-to-build metros. The Q4 2025 regional occupancy data is the clearest single snapshot of that dynamic: one region improving, two regions holding, one region declining. Capital allocation in 2026 and 2027 is following the occupancy data, and the Midwest is where it is going.
Sources
- March 2026 Self Storage Report: Rents Slide in Most U.S. Cities, RentCafe
- Sun Belt Self-Storage Rents Under Pressure as Midwest Gains Ground, GlobeSt
- Self Storage Market Outlook, April 2026, Yardi Matrix
- Self Storage National Report, April 2026, Multi-Housing News
- Top 10 Emerging Self-Storage Markets of 2026, Multi-Housing News
- U.S. Self-Storage Market Institutional Analysis and Five-Year Forecast (2026-2031), MMcG Invest
- Self Storage Supply Outpaces Demand in 2026, CRE Daily
- Self Storage Rent Trends Face Volatility in 2026, CRE Daily
- 2026 U.S. Self-Storage National Investment Outlook, Marcus & Millichap
- National Self-Storage Market Update: Current Performance, 2025 Trends, and H1 2026 Outlook, Matthews Real Estate