Wall Street Doesn't Own America's Small-Bay Industrial — 92% Belongs to Everyone Else

Pull the deed on a typical small-bay industrial building and you won't find a REIT. You'll find a person. A retired electrician who bought the shop in 1998 and still leases it back to the company he sold to his foreman. Three siblings and a family LLC, quietly arguing over whether to sell the warehouse their father left them. A regional operator with forty buildings and one leasing agent who knows every tenant by name. The pension fund everyone assumes owns industrial real estate? It isn't on the deed, and it has never set foot on the property.

That's a composite, but it's the pattern the records keep showing. Do it 783,617 times — every small-bay title we could classify — and the picture holds. Institutions own 7.6% of America's small-bay industrial. The other 92% belongs to everyone else: professional private investors hold 53.6%, and local, individual, and owner-occupier landlords hold 38.9%.

The consensus says industrial is the asset class Wall Street fell in love with. That's true — about a different building. It's a story about the 500,000-SF box on the interstate, not the multi-tenant park where your town's welders, plumbers, and specialty distributors actually work. The part of industrial where the working economy operates is owned the way it's occupied: locally, one building at a time.

How I sorted the owners — and what "small-bay" means here

Two definitions, because both terms get stretched.

"Small-bay," throughout this study, means industrial property under 200,000 square feet — the whole family of formats that trade under a dozen names: small bay, shallow bay, light industrial, warehouse, flex office/warehouse, micro-bay. If it's industrial and under 200,000 SF, it's in. This is the real estate of American small business at large — not one or two tenant trades, but hundreds of business types, machine shops to medical suppliers.

For ownership, I dropped every title-holder into one of three groups, keyed on what kind of entity holds the deed, how many buildings sit behind it, whether a management company stands between owner and asset, and how close the owner is to the building itself:

Institutional — pension funds, REITs, insurers, big investment managers. Large entities, large portfolios, a manager in between, and rarely within a hundred miles of the property.
Professional private investors — private companies and LLCs that own real estate as a business, from a family firm with a few buildings to a regional operator with dozens. Organized and privately held; not institutional. The middle of the market.
Local & individual owners — the owner-occupier running his business out of the building, the mom-and-pop landlord with one or two, the small local investor with a modest book. Close to the property, close to the tenants.

The electrician and the three siblings from the top of this piece sit in that third bucket. The regional operator with forty buildings is the second. The pension fund is the first — and it's the smallest of the three by a wide margin.

The ownership split, in five numbers

Institutions own 7.6% — 59,455 of the 783,617 buildings we could classify by owner.
About 92% is not institutional — 724,162 buildings, held between private investors and local owners.
Professional private investors are the single biggest group, 53.6% — 419,711 buildings, the market's private middle.
Local & individual owners hold 38.9% — 304,451 buildings, split into 121,274 owner-occupiers and mom-and-pop landlords, and 183,177 small local-portfolio owners.
The mix flips hard by state — local ownership runs from 68.8% in Texas down to 13.3% in Wisconsin.

But isn't industrial Wall Street's asset class?

For big-box, yes. For small-bay, no — and the reason is structural, not sentimental. Institutional capital buys what it can buy at scale: large, single-tenant, credit-backed boxes that underwrite cleanly and absorb a nine-figure allocation in one signature. Small-bay is the opposite shape — many small suites, many small tenants, hands-on management, and a deed held by one LLC or one individual, one building at a time.

The money has been trying to come down-market. More than 70% of 2025 industrial sales volume went into deals under $100 million (per NAIOP and BKM), and the discount small-bay has historically traded at against institutional big-box — my read is a wider cap rate, maybe 50 to 100 basis points — has been narrowing as bigger money hunts smaller assets. But "trying to come down-market" and "owning the market" aren't the same sentence. At 7.6%, the push has barely scratched the ownership base. Sub-100,000-SF buildings are about 41% of all U.S. industrial inventory (Newmark) — the largest size tranche in the country — and it's still, overwhelmingly, a private market.

Ownership looks nothing alike from Texas to Wisconsin

State to state, this is the most variable thing we measure. In Texas, 68.8% of classified small-bay is locally or individually owned; in Wisconsin, 13.3%. Institutional ownership runs the other direction — highest in Arizona at 15.5%, lowest in Wisconsin at 1.2%. Eight states, both ends of the spread:

| State | Local & individual owners | Institutional owners | |---|---|---| | Texas | 68.8% | 9.1% | | Georgia | 67.0% | 10.0% | | Arizona | 53.6% | 15.5% | | Massachusetts | 46.9% | 12.7% | | Florida | 37.8% | 8.7% | | New York | 35.8% | 10.6% | | Illinois | 15.4% | 13.3% | | Wisconsin | 13.3% | 1.2% |

Two things worth staring at. High institutional share doesn't crowd out local ownership — Arizona has the most institutional money in the group and a local majority, because its professional-investor middle is comparatively thin. And the states with the least local ownership aren't institutional strongholds at all; they're professional-investor country. Wisconsin's 13.3% local and 1.2% institutional leave roughly 86% with professional private investors. Illinois sits near 71%. Texas and Georgia are the photographic negative: local owners run the place, and the private middle is small.

A single percentage for a whole state buries more than it reveals — the real texture lives at the metro line and below, and I'd trust a corridor read long before a state one. But the spread here is too wide to be noise, and it doesn't sort into Sun Belt versus Rust Belt. It sorts by how each market's private capital chose to organize itself.

You can't index this market — you can only assemble it

That's the real reason ownership looks the way it does, and it's where this study shakes hands with the last one. The first piece in this series clocked the median small-bay building at 43 years old — built in 1982 — with only 7.3% of the stock going up since 2015. Set ownership on top of that vintage: an aging stock, no meaningful new supply, and title scattered across hundreds of thousands of private LLCs and individuals.

Stack the three and you get a market with no institutional on-ramp. No pipeline of new product to buy at scale. No consolidated book of old product either — just fragments, each held by someone who bought one building near their business two decades ago. Building a portfolio here isn't one check; it's finding and negotiating two hundred buildings, one owner at a time. That friction is exactly why the big money stayed in the boxes — and exactly why the ownership base still reads like Main Street.

So is fragmentation a weakness or the moat?

It reads like a weakness: unprofessional, hard to transact, a thousand small owners who don't return the call. Turn it over. A market you can index has already been priced by the people who index things. This one can't be, so it hasn't been. Fragmentation isn't the flaw in the opportunity — it's the reason the opportunity is still sitting here.

I'll keep that a read, not a recommendation. When 92% of a scarce, irreplaceable, tightly occupied asset class is held privately — much of it by owners who are aging, passive, or one succession event from selling — the edge goes to whoever can see the ownership and reach it first. The numbers describe the shape of the board. They don't say which owner is ready to move. That's a parcel-level, owner-level question — and it's the whole game.

Frequently asked

Who owns most small-bay industrial in the U.S.? Private owners. Professional private investors hold 53.6% and local, individual, and owner-occupier owners hold 38.9% — together about 92% — per SpanVor's national records as of July 2026. Institutions hold just 7.6%.

What share of small-bay industrial is institutionally owned? About 7.6% — 59,455 of the 783,617 small-bay properties SpanVor could classify by owner type. The other ~92% is privately held.

Which state has the most locally owned small-bay industrial? Of the states we studied, Texas leads: 68.8% of its classified small-bay is locally or individually owned. Wisconsin has the least, at 13.3% — there, professional private investors hold roughly 86%.

Is small-bay industrial becoming institutional? Slowly, at the margins. Institutional capital has pushed toward smaller deals (over 70% of 2025 industrial sales volume was under $100M, per NAIOP and BKM) and the pricing discount to big-box has narrowed — but institutions still own only 7.6% of the stock. It remains a private market.

Methodology

These figures come from SpanVor's national industrial property universe — built from primary public records (county assessor rolls, permits, and land records) and classified industrial-only. The study covers 805,785 small-bay properties (the full under-200,000-SF industrial family — small bay, shallow bay, light industrial, warehouse, flex office/warehouse, and micro-bay; see the definition above). The ownership profile reflects the 783,617 (97.2%) of those that carry an ownership classification. Owner type is derived from ownership records — the entity that holds title, the scale of the portfolio behind it, and the owner's proximity to the property. Current as of July 11, 2026 (Central Time), describing SpanVor's coverage.

Key takeaways

Institutions own just 7.6% of U.S. small-bay industrial — about 92% is privately held.
Professional private investors are the largest group (53.6%); local, individual, and owner-occupier owners hold 38.9% — the market looks like Main Street, not Wall Street.
Local ownership swings from 68.8% (Texas) to 13.3% (Wisconsin); institutional from 15.5% (Arizona) to 1.2% (Wisconsin) — and the low-local states are professional-investor strongholds, not institutional ones.
Fragmented ownership + aging stock + no new supply (median building built 1982; only 7.3% post-2015) means this market can't be indexed — only assembled.
The read: fragmentation isn't a flaw. It's why the opportunity persists.

See who owns your market. This is the national view; the useful version is your corridor, resolved to parcels — which buildings are small-bay, how old they are, and, on every SpanVor property profile, who owns them and how to reach them. Explore the universe we map at spanvor.com.

One last thing, since you read this far: the code SpanvorBlog takes 25% off a SpanVor Pro subscription — where the parcel-level data behind posts like this one actually lives.

Written by Jason Probert, Founder of SpanVor — Industrial Property Intelligence.