Industrial outdoor storage is the parcel you have driven past a thousand times without pricing it: a fenced truck yard, a container lot, a trailer terminal, a laydown site with one small office and acres of graded gravel. The value is not in the building. It is in the dirt, the zoning that permits open-air storage, and the tenant who cannot find another site within thirty miles. IOS is a land-value play wearing an industrial label, and it underwrites nothing like the warehouse next door. The asset hides in plain sight because the thing being bought is the entitlement, not the structure.
Key Takeaways
Industrial outdoor storage is priced on land and zoning, not building area, because the improvements are paving, fencing, and lighting rather than a leasable shell.
CBRE reported IOS rents averaged $13.14 per square foot in the fourth quarter of 2025, a 17.9% premium over traditional industrial at $10.85, with IOS vacancy at 2.5% versus 6.7%.
The supply constraint is zoning, not capital: most municipalities will not approve new truck parking or open-storage sites except through a slow, costly special-use process, per broker commentary reported by Bisnow.
Newmark reported IOS rent growth of roughly 123% since 2020, an outlier among industrial property types driven by demand that outpaces a fixed stock of legally usable land.
A worked example below shows how a low-coverage yard can reach a mid-6% yield on cost from land rent alone, before any building rent enters the model.
What Is Industrial Outdoor Storage, and Why Does It Hide in Plain Sight?
Industrial outdoor storage is land zoned and improved for the open-air storage of vehicles, equipment, containers, and materials, with minimal building coverage. Think truck parking, trailer terminals, container yards, and contractor laydown. The site earns rent on its acreage, not its square footage, which is why it sits outside how most operators scan for property types.
The category hides because it fails the usual filters. Screening tools index buildings: rentable area, clear height, dock doors, year built. An IOS site scores near zero on all of them. It is often mislabeled as vacant land, a parking lot, or a low-value industrial improvement, and it rarely trades through the same marketed channels as a distribution center. Yet the tenant base is deep and non-discretionary: trucking and logistics carriers, construction and utility contractors, equipment rental firms, auto and heavy-machinery dealers, and municipal fleets. Each needs somewhere legal to park iron and stage materials near a corridor or a port. The demand is structural. The visibility is not, which is exactly the gap that lets disciplined buyers acquire before the asset is priced as its own class.
Why Is IOS a Land-Value Play Instead of a Building Play?
IOS is a land-value play because the improvements are cheap and the entitlement is scarce. A warehouse buries most of its cost in the shell, racking, and dock equipment. An IOS yard needs grading, paving or compacted aggregate, fencing, lighting, and drainage, so the capital sits in the land and the right to use it openly, not in a depreciating structure.
That inversion changes every line of the underwriting. Traditional warehouse value tracks building metrics and re-leasing a specific box. IOS value tracks acreage, location relative to freight, and whether the zoning permits open storage as of right. Because so little of the basis is building, IOS carries lighter ongoing capital expenditure and commonly leases on a net basis, pushing site upkeep to the tenant. The contrast is easiest to see side by side.
Factor | Industrial outdoor storage | Traditional warehouse |
|---|---|---|
Building coverage | Low, often under 20% of the site | High, commonly 40% to 60% of the site |
Primary source of value | Land and open-storage zoning | The building shell and its clear height |
Improvement capex | Light: grading, paving, fencing, lighting | Heavy: shell, racking, dock doors, systems |
Entitlement barrier | High: new open-storage zoning is rarely granted | Moderate: industrial buildings are widely permitted |
Cap rate | Historically a representative 50 to 100 bps premium to warehouse, compressing as capital enters | The institutional benchmark for industrial |
The cap rate row deserves a caution. The 50 to 100 basis point premium is a representative historical range, not a fixed figure, and it has compressed in prime infill as institutional capital moved into the space. For a definition of how that yield is computed, see our glossary entry on cap rate. The direction of travel is what matters: IOS priced as a fringe use trades wide, and IOS priced as a scarce, contracted cash flow trades tight.
A Worked Example: Land-Based Yield on an IOS Yard
Consider a ten-acre infill yard, with all inputs stated as illustrative assumptions rather than market quotes. Acquire the parcel at $600,000 per acre and add $150,000 per acre of site work for paving, fencing, lighting, and drainage. All-in basis is $750,000 per acre, or $7.5 million total.
Assume the yard leases on a net basis at $4,000 per acre per month, which is $48,000 per acre per year, or $480,000 per year across ten acres. Divide net rent by total cost: $480,000 divided by $7.5 million is a 6.4% yield on cost. That return is generated by graded land and a fence. No building rent has entered the model. Raise the land rent to $5,000 per acre per month and the same basis yields 8.0%. The sensitivity to rent per acre, not per square foot, is the entire point: this is a land instrument.
What Makes IOS Supply So Hard to Replace?
The supply constraint is regulatory, not physical. There is plenty of dirt. There is very little dirt that a municipality will let you cover with idling trucks, diesel exhaust, and stacked containers. New open-storage and truck-terminal approvals run into zoning ordinances and neighborhood opposition, so the legal stock of IOS-usable land is close to fixed while demand keeps rising.
Brokers describe the barrier directly. "The lack of available supply for truck terminals has historically been driven by local zoning ordinances," a Cresa broker told Bisnow, adding that most communities "won't really add any more of these locations unless it's via a case-by-case, special-use approval process, which is time-consuming and costly." That single sentence is the investment thesis. When a use is legal on a shrinking set of parcels and prohibited everywhere else, existing sites with clean as-of-right zoning become the scarce good, and the entitlement itself becomes the moat.
This is why an IOS underwrite that stops at rent and cap rate misses the asset. The durable question is entitlement risk: does the zoning permit open storage and truck parking outright, or does it depend on a special-use permit, conditional use, or variance that a future board can decline to renew. A site that is grandfathered or as-of-right is worth materially more than an identical site one hearing away from losing its use. The scarcity is written in the municipal code, and code does not respond to a rise in demand the way construction does. That makes IOS supply structurally inelastic, the same trait that has reshaped how capital treats other constrained property types, as our analysis of data centers as the new core asset describes for power-constrained sites.
How Does IOS Perform Against Traditional Warehouse?
IOS has outperformed traditional industrial on rent, vacancy, and rent growth. CBRE reported that in the fourth quarter of 2025, IOS rents averaged $13.14 per square foot against $10.85 for traditional industrial, a 17.9% national premium, while IOS vacancy held at 2.5% versus 6.7% for the broader industrial market. Scarcity shows up as both higher rent and tighter availability at once.
The growth figure is starker. Newmark reported IOS rent growth of roughly 123% since 2020, an outlier even against a warehouse sector that boomed through the same period. The mechanism is the fixed legal supply: when demand from trucking, construction, and logistics rises against a stock of usable land that cannot expand on a normal permitting timeline, price does the adjusting. CBRE noted the strongest premiums in secondary logistics markets including Kansas City, Indianapolis, Charlotte, and Cincinnati, where corridor access meets constrained zoning. The pattern rhymes with the two-speed industrial story we covered in the industrial long boom and last-mile logistics: the general warehouse market normalizes while the supply-starved niches keep compounding. For a fuller definition of the category and its subtypes, see our industrial outdoor storage glossary entry.
Frequently Asked Questions
What counts as industrial outdoor storage?
Industrial outdoor storage is land zoned for open-air storage of vehicles, equipment, containers, and materials with minimal building coverage. Common formats include truck parking and trailer terminals, container yards, contractor and utility laydown sites, and equipment or fleet storage lots near freight corridors and ports.
Why do IOS sites often trade at a premium to warehouses?
Because the supply of land legally zoned for open storage is close to fixed while demand rises. CBRE reported a 17.9% rent premium and lower vacancy for IOS in the fourth quarter of 2025, and Newmark reported roughly 123% rent growth since 2020, both driven by scarcity rather than by superior improvements.
What is the biggest risk in underwriting IOS?
Entitlement risk. A site's value depends on whether open storage and truck parking are permitted as of right or rest on a special-use permit, conditional use, or variance that a municipality could decline to renew. Verifying the zoning basis matters more than any building metric.
Conclusion
Industrial outdoor storage rewards the operator who stops underwriting the building and starts underwriting the land and the code. The asset hides in plain sight because standard screening indexes structures, and IOS has almost none. What it has instead is scarce, near-inelastic supply: zoning that municipalities rarely extend, corridor and port locations that cannot be relocated, and a non-discretionary tenant base that has nowhere else to park. CBRE and Newmark data show the premium and the growth are real, but the durable edge is upstream of any figure. It is knowing that the entitlement is the asset, and pricing the dirt accordingly.