The Self Storage Association held its Spring Conference and Trade Show in San Antonio on March 18-20, drawing more than 2,000 attendees to the Henry B. Gonzalez Convention Center. Six weeks later, the Inside Self-Storage World Expo convened at Caesars Forum in Las Vegas for four days of education and exhibits, adding 759 first-time attendees to a gathering that typically draws 5,000-plus. Two conferences in eight weeks, both attended by the same operator and investor community, produced the same central message: the renter base is younger than it was, staying longer than it used to, and renting for reasons that have less to do with moving than they once did.
The SSA's recurring demand study, which the association has conducted across multiple survey periods since the mid-2000s, recorded its largest two-year increase in household penetration on record. The share of U.S. households renting at least one storage unit rose from 11.1% in 2022 to 13.4% in 2024, representing 16.68 million renting households nationwide. That is not noise: it is the kind of durable demand expansion that takes years to establish and does not reverse quickly. The sector projected to grow from $45.3 billion in 2025 to $47.3 billion in 2026, with approximately 52,000 facilities and 2.1 billion net rentable square feet, is adding customers at the fastest rate in survey history at a time when street rates are still recovering from three years of supply pressure.
The average tenant length of stay hit 18.5 months in 2025, a 2.4% increase year-over-year. That number matters because tenant retention is the closest thing self-storage has to a natural moat: a renter who stays 18 months has reorganized their life around having that unit, and will only leave it under meaningful pressure.
What the SSA Spring Conference Said About Who Is Renting
The SSA Spring Conference's session titled "Meet Your Future Renter: Smart, Selective, and Shaping the Evolution of Self Storage" was one of the most-cited sessions among operators who attended. The framing captures what the demand data actually shows: the customer base is shifting, and the product, communication, and pricing strategies built for the 2010s renter are increasingly misaligned with the renter showing up in 2025 and 2026.
Millennial usage surged 22% over just two years, from 2023 to 2025, according to SSA data. Approximately 35% of millennials currently rent a self-storage unit, making them the single largest demand cohort by generation. Their reasons for renting are different from the baby boomers who preceded them: where boomers are predominantly downsizing, millennials are managing the overflow of life in undersized apartments, storing equipment for activities they pursue, and bridging the gap during frequent relocations driven by job moves and housing market constraints.
Gen Z represents the forward demand story. Only 16% of Gen Z respondents currently rent a unit, but 50% report planning to do so in the future. That gap between current usage and stated intention is larger for Gen Z than for any prior generation at a comparable life stage, which suggests that the demand growth of the past two years is not the ceiling. Baby Boomers, who at 42% current usage represent the highest penetration of any generation today, are entering peak downsizing years, which will sustain demand from the older cohort even as the younger cohort grows into it.
What the ISS World Expo Education Track Confirmed
The ISS World Expo organized its 42 sessions into six tracks: Building, Investing, Management, Ownership, Technology, and Tomorrow. The Technology and Tomorrow tracks together accounted for the most contested seat allocation at the event. AI-focused sessions drew standing-room attendance, with "Accepting AI, Here and Now: How to Effectively Harness Its Power in Self Storage Operations" and Lumio's roundtable "AI in Self Storage: Separating Hype from Reality" both heavily subscribed.
The demand-side sessions reinforced the SSA data. The housing lock-in effect, now running for three-plus years, has produced a specific type of renter that operators have had to learn to serve: someone who is not between moves but who is managing the permanent overflow from a primary residence that does not fit their life. One in three Americans now rents a self-storage unit, according to StorageCafe's annual demand survey. That one-in-three figure would have been unthinkable a decade ago, when the industry's penetration assumptions were built around 8% to 9% of households.
The self-storage sector has accelerated into a position capable of sustaining itself even amid headwinds, and continues to show steady growth and stability.
- ISS World Expo 2026 Recap
The housing freeze driving much of this is structural, not cyclical. Approximately 73% of mortgage holders report they would move if they could keep their current rate, with 30% saying they would move immediately. That locked-in homeowner base, combined with renters who cannot afford to upsize their apartments, is creating long-duration storage demand that is not tied to the transaction volume in residential real estate.
What OpenTech's 15th Annual White Paper Found
OpenTech Alliance released its 2026 Self Storage Data White Paper at its ISS World Expo booth, marking the 15th consecutive annual edition of the report. Built from behavioral data across more than 15,000 facilities in OpenTech's global network, the white paper covers how tenants actually interact with their storage facilities, patterns that operators can use to adjust staffing models, self-service configurations, and site performance benchmarks.
The 2026 edition's central finding is consistent with the broader industry demand narrative: tenants are interacting with facilities differently than they did five years ago, and those behavioral shifts have operational implications. Operators using access pattern data to optimize staffing are finding that the traditional peak hours model, which was built around move-in and move-out activity concentrated on weekends, no longer accurately captures how long-term non-moving renters use their units. A renter who has had a unit for 18 months visits on a different schedule than someone in the middle of a residential move.
OpenTech framed the white paper as input for operators managing facilities with less on-site staff than before. Predictive data on access timing, unit-turn probability, and seasonal behavioral shifts is more operationally useful when the manager is not on site eight hours a day. The vendors deploying these tools most effectively are building them into decision layers that reduce manual interpretation: the software surfaces the insight, and the operator acts on it without pulling reports.
What the Demand Data Says About H2 2026
The outlook heading into the second half of 2026 is a demand picture that is stable at elevated levels, with two structural tailwinds that should sustain it even if housing market mobility does not recover meaningfully this year.
The first is generational maturation. Millennials entering their late 30s and early 40s are hitting the household formation and family expansion stage of life at higher density than previous generations, because fewer of them own homes. That compression into smaller primary residences creates storage demand that does not go away when the economy softens. The second is the accumulation dynamic: tenants who entered storage as a short-term bridge during a life event and stayed for 18-plus months have reorganized their expectations. They are now long-term customers who budget for storage the same way they budget for utilities.
The rate environment complicates the picture. National average street rates stood at $131 per month in March 2026, down 2.2% year-over-year. Stabilized occupancy averaged 77.0% in Q4 2025, essentially flat year-over-year. The demand growth in the SSA penetration data is real, but it has not yet converted into rate recovery across most markets because new supply, while declining, is still working through the system. New deliveries are projected at 2.3% to 2.4% of existing stock in 2026, down from 3.0% in 2025, and the analytical consensus points toward improving fundamentals from 2027 onward.
What the two 2026 conferences made clear is that operators who wait for market-level rate recovery to invest in their customer acquisition, retention, and technology capabilities will find themselves behind operators who used the flat rate period to build the infrastructure that will convert the next demand expansion into revenue.
The Numbers Worth Writing Down
- SSA recurring demand study: household penetration rose from 11.1% in 2022 to 13.4% in 2024, the largest two-year increase on record
- 16.68 million U.S. households renting at least one storage unit as of 2024
- Millennial usage: 22% surge over two years (2023 to 2025); approximately 35% currently rent a unit
- Gen Z usage: 16% currently rent; 50% plan to rent in the future
- Baby Boomer usage: 42% currently rent, the highest penetration of any generation
- Average tenant length of stay: 18.5 months in 2025, up 2.4% year-over-year
- One in three Americans now rents a self-storage unit (StorageCafe annual survey)
- OpenTech 2026 white paper: 15th annual edition; built from 15,000-plus facilities globally
- ISS World Expo 2026: 42 seminars, 8 workshops, 4 Q&A sessions, 30-plus roundtables; 759 first-time attendees
- SSA Spring Conference 2026: San Antonio, March 18-20; 2,000-plus attendees
- Sector revenue projection: $45.3 billion in 2025 to $47.3 billion in 2026
The Demand Story Is More Durable Than the Rate Cycle Suggests
The flat rate environment in early 2026 is producing a narrative around the sector that overstates the demand problem and understates the structural story. Street rates being negative year-over-year is a supply absorption issue in specific markets, not an indication that Americans are renting fewer units. They are renting more, staying longer, and skewing younger than the industry's historical customer profile.
The two major industry conferences in Q1 2026 did not spend meaningful time debating whether demand exists. They spent it on how to reach the next generation of renters, how to use behavioral data to optimize operations for a longer-tenure tenant, and how AI can close the gap between what operators know about their customers and what they do with that knowledge. That is an industry confident enough in its demand floor to argue about execution rather than survival. The rate recovery will follow supply absorption. The demand that is already in the system is not going anywhere.
Sources
- OpenTech Releases 2026 Self Storage Data at ISS World Expo, OpenTech Alliance
- SSA Spring Conference & Trade Show 2026, StoragePug
- Inside Self-Storage World Expo 2026 Returns to Las Vegas with 40+ Seminars and Unmatched Industry Insights, GlobeNewswire
- Inside Self-Storage World Expo 2026: Innovation, Education and Community, GlobeNewswire
- SSA 2026 Spring Conference: Session Guide, Lumio
- Self Storage Association 2025 Demand Study, Self Storage Association
- Same Stuff, Different Generation: Millennials and Gen Z Drive Storage Demand, DXD Capital
- The Generational Shift in Storage, DXD Capital
- 1 in 3 Americans Rent Self Storage as Space Shortages Grow and Demand Expands, StorageCafe
- Stalled Moves, Sticky Tenants: The State of Self-Storage in 2026, Placer.ai
- U.S. Self-Storage Market Institutional Analysis and Five-Year Forecast 2026-2031, McMcGinvest
- Self Storage Market Outlook, April 2026, Yardi Matrix
- The State of Self Storage in 2026: 8 Crucial Trends to Know, Yardi Breeze
- Millennial Demand for Self Storage, Forge Buildings
- ISS World Expo 2026: Complete Self-Storage Show Guide, Iconic Displays