Business tenants now account for somewhere between one in six and one in four self-storage rentals, and they are the fastest-growing part of the customer base. A look at who they are, why the industrial market keeps sending them to storage, which operators are building for them, and what a facility has to change to keep them.

Key takeaways

• Business renters account for roughly 15 to 25 percent of occupied self-storage units in most markets, and the share is growing while consumer demand stays flat.
• Small-bay industrial is the engine: nearly half of shallow-bay stock predates 1980, sub-50,000-square-foot vacancy sits near 4 percent against about 7.5 percent overall, and the segment is under 2 percent of the construction pipeline.
• Co-warehousing operators such as ReadySpaces, WareSpace and Saltbox are charging $700 to $1,300 a month for a few hundred square feet, a multiple of the equivalent storage unit rent.
• Keeping the business tenant means larger units and doors, dock-height loading, in-unit power and Wi-Fi, 24-hour access, package acceptance and account-style billing, plus someone on site to sign for freight.

For most of its history the self-storage industry has described its customer in the language of the four Ds: death, divorce, dislocation and downsizing. That framing is still true, but it is no longer complete. Walk a well-run facility on a weekday morning and a growing share of the people at the roll-up doors are not moving house. They are loading a landscaping trailer, breaking down a pallet of e-commerce inventory, or restocking a service van. In a market where household turnover has stalled, the business customer is the part of demand that is growing.

The size of the segment depends on who is counting. Consumer surveys that ask households why they rent tend to put business use in the high single digits to mid-teens, because a household survey misses the tenant who rents in a company name. The Self Storage Association’s demand study, which surveys businesses as a distinct population, and operators’ own rent rolls tell a different story: in most markets business renters run between 15 and 25 percent of occupied units, and where small industrial space is scarcest the share is higher. Whatever the precise number, the direction is not in dispute. Consumer demand is flat because moving activity is flat. Business demand is growing because the alternative keeps getting more expensive.

Who the self-storage business tenant is

The segment breaks into three broad groups, and each rents storage for a different reason.

The largest is the trades and home services: contractors, electricians, plumbers, HVAC firms, landscapers, pool and pest companies, painters. They need a place to keep tools, materials and seasonal equipment, somewhere to park a trailer overnight, and a spot where a crew can meet at 6:30 in the morning before scattering to job sites. They are the classic drive-up customer, and they were renting storage long before anyone called it a micro-warehouse.

The second group has grown fastest since the pandemic: e-commerce and direct-to-consumer sellers. An Amazon, Etsy or Shopify seller doing a few hundred orders a month needs inventory space, a table to pack on, and a carrier that will pick up daily. The garage stops working somewhere around the second pallet. Placer.ai’s March 2026 analysis of foot traffic at the largest chains found the share of visitors who are remote workers and the share of frequent visitors (two or more visits a month) both climbing steadily, which is the visit pattern of a seller running a small fulfillment operation rather than a household checking on boxes.

The third group is the general small business priced out of industrial space: distributors, sample-heavy sales reps, caterers and event companies, staging and design firms, nonprofits, light manufacturers and makers. Extra Space’s business-storage marketing now names most of these explicitly, which is a fair indication of who is actually showing up.

What unites the three groups is what they do for a facility’s economics. Business tenants stay longer, tolerate rate increases better and vacate less often than a household moving through a life event. The industry’s average length of stay reached 18.5 months in 2025 according to the SSA, and operators who track it by segment consistently find their commercial accounts at the long end of that distribution. A contractor who has organized his workday around a unit does not shop the street rate every spring. He also tends to take a 10 by 20 or larger, rents more than one unit, and buys the ancillary products.

Why small-bay industrial scarcity keeps sending businesses to self storage

The engine behind the segment is not anything the storage industry did. It is the disappearance of small industrial space.

CBRE’s March 2026 brief on shallow-bay industrial put the picture plainly. Nearly half of the shallow-bay inventory in the United States was built before 1980, more than 80 percent before 2000, and only about 5 percent since 2010. Shallow-bay asking rents rose more than 50 percent between 2010 and 2025, and vacancy in the segment has sat well below the overall industrial rate since 2017. Development capital has gone almost entirely to big-box distribution, because urban land prices and modern construction costs do not pencil for a 20,000-square-foot multi-tenant building.

The numbers get starker as the unit gets smaller. WareSpace’s 2026 micro-bay report, drawing on CoStar and brokerage data, puts small-bay vacancy at 4.2 percent and sub-5,000-square-foot space near 3.5 percent against an overall industrial rate of about 7.5 percent, with small-bay rents up roughly 40 percent since 2020 and the segment under 2 percent of the construction pipeline despite being about a third of existing stock. PwC and the Urban Land Institute’s Emerging Trends report cites mid-2025 vacancy of 2.8 percent for industrial buildings of 10,000 square feet or less, against 7.6 percent for the market as a whole.

Then there is the lease itself. Traditional industrial landlords rarely lease below 5,000 to 10,000 square feet, and the deal that comes with it is a three-to-five-year term, a personal guarantee, and triple-net charges the tenant cannot forecast. A plumber with three trucks does not need 8,000 square feet and cannot sign a personal guarantee on a lease he might not survive. The storage unit is month to month, requires no guarantee, and is available in every suburb at a fraction of the size. It is a poor warehouse, but it is a warehouse the small business can actually get. With the United States logging 430,000 to 480,000 new business applications a month since 2021, the pool of firms that need somewhere to put things is not going to shrink.

The operators courting business storage tenants

Two very different kinds of operator are chasing this customer, and the distance between them is instructive.

At one end are the storage REITs and large private operators, who are courting business tenants inside a conventional storage product. Extra Space now runs dedicated business-storage pages promising extended access of 6 a.m. to 10 p.m. as standard and 24-hour access at many locations, drive-up units, package acceptance at select facilities, on-site office rentals with power, internet and phone lines, and drive aisles wide enough for an 18-wheeler. Public Storage and CubeSmart offer versions of the same: business accounts, multi-unit billing, commercial vehicle parking, and a sales process that treats a contractor as a key account rather than a walk-in. None of the three yet breaks out business customers in its earnings disclosure; on the second-quarter calls the segment went unmentioned even as management talked about elongating lengths of stay and lower vacate activity, which are exactly the behaviours the segment produces. That silence is a measure of how early the institutional side is in treating the business tenant as a distinct market.

At the other end is a purpose-built category that did not exist a decade ago: co-warehousing and small-bay flex, which takes the storage playbook of month-to-month terms and no guarantee and applies it to space that actually functions as a warehouse. ReadySpaces, the largest, operates more than 38 locations across 19 metros in the United States and Canada, with units of 200 to 5,000 square feet, loading docks, shared racking and daily carrier pickups. WareSpace has 25 locations and is growing quickly; its Plano, Texas facility, opened August 6 in a converted retail box, offers 160 climate-controlled suites of 200 to 2,000 square feet with industrial racking, conference rooms and a shared kitchen, at rents starting under $700 a month. Saltbox, which pairs space with on-demand fulfillment labour and shipping discounts for direct-to-consumer brands, is in eight markets with Chicago opening this fall. Portal Warehousing, Flex ETC and Polygon round out the e-commerce end of the field, while WorkBay, Rise Commercial District and Blue Co. Warehousing target contractors and trades with roll-up doors, forklift access, fleet parking and laydown yards. Blue Co. reports occupancy around 85 percent across its North Carolina sites and plans to more than double its count within two years.

The co-warehousing group is small, its economics are unproven at scale, and several of its members are more coworking company than real estate company. But it has shown something the storage industry should study: the business tenant will pay $700 to $1,300 a month for a few hundred square feet when the space is designed around how a business works. That is a multiple of what the same tenant pays for a 10 by 20 storage unit, and it is the clearest evidence available that storage has been underpricing the segment by underbuilding for it.

What business tenants demand of a self-storage facility

Serving a business tenant well is not a marketing exercise. It changes the box, and the changes run from site plan to software.

The first is unit mix and door size. Business demand concentrates in 10 by 20 and larger, and increasingly in 300 to 1,000 square foot units that sit between storage and industrial. New ground-up projects are adding a row of contractor bays with 12 to 14 foot ceilings, oversized roll-up doors that will take a work truck or trailer, and in some cases in-unit power, lighting and a private restroom. The superwide drive-up building, with deeper units and wider aisles, is becoming a default in Sunbelt developments because it flexes between a household’s furniture and a contractor’s inventory.

The second is loading and circulation. A seller moving pallets and a plumber backing up a trailer both need what the standard storage site was never designed for: a dock or at least a dock-height loading area, a pallet jack or forklift the facility controls, aisles wide enough for a box truck to turn, and a receiving process for freight that arrives when the tenant is not there. Package acceptance, the one service almost every operator can add tomorrow, is the most-requested business amenity and among the cheapest to deliver.

The third is power, connectivity and climate. Outlets in the unit, facility-wide Wi-Fi strong enough to run a label printer, and climate control for inventory and documents are now baseline expectations for the e-commerce tenant. Operators who have added a few small offices with power, internet and a mailing address, or a shared workroom with a packing table, report that those spaces lease first and turn over least.

The fourth is access. A 6 a.m. crew meeting and a 9 p.m. packing session do not fit inside a 9-to-6 gate schedule. Extended hours are the minimum; 24-hour access with individual unit alarms and camera coverage is what the business tenant actually wants, and it is the amenity that most directly justifies a rate premium.

The last is operational, and it may be the hardest. The business tenant wants to be treated like an account: one invoice for three units, a named contact, authorized users for employees, monthly commercial vehicle parking, and a manager who will sign for a shipment. That runs against the direction the large operators have taken on staffing, where remote and centralized management have cut on-site hours sharply. A facility with no one at the counter cannot accept a pallet. The operators winning the segment have found a way to keep a person on site during business hours, or to automate receiving with lockers and smart access, rather than simply pointing a website at contractors.

The takeaway for storage owners and developers

Self-storage did not set out to become the small-business warehouse of the United States. It became one by default, because the industrial market stopped building for tenants under 5,000 square feet and the storage unit was the only month-to-month, no-guarantee, drive-up space left. That accident has produced the industry’s stickiest, highest-value and fastest-growing customer, and most of the sector is still serving that customer with a product designed for someone else’s furniture. The co-warehousing operators are proving what the tenant will pay for a better-fitting box. The storage owner who adds a row of contractor bays, a dock, in-unit power and someone to sign for the freight is not diversifying away from self-storage. He is finally building for the customer who was already there.