Industrial Outdoor Storage (IOS) Guide: Definition, Rents and What to Check
Last updated: November 11, 2026
Key Takeaways
- Industrial outdoor storage (IOS) is industrial-zoned land used mainly for outdoor storage and parking, such as trucks, trailers, containers, equipment and building materials, usually with little or no building on site.
- It is one of the tightest corners of industrial real estate. CBRE put national IOS vacancy at 3.6% in Q2 2026, against 6.5% for industrial overall, as reported by CRE Daily.
- Supply barely grows. Matthews estimates new IOS deliveries at less than 2% of inventory a year, largely because of restrictive municipal zoning.
- IOS is usually priced per acre per month. Matthews puts 2026 primary-market rents at about $5,000 to $15,000 per acre per month and secondary markets at about $3,000 to $6,000.
- Before leasing, confirm the permitted use, surface, truck access, security, stormwater controls and power, which now matters for EV fleets and energy projects.
Industrial outdoor storage (IOS) is industrial-zoned land where the main use is outdoors: parking trucks and trailers, staging containers, storing equipment and building materials, or running a contractor yard. Most IOS sites have a paved or gravel yard and little building, often a small shop or office. Green Street gives the simplest definition: a land site zoned for industrial use where the tenant can store something outside.
IOS has grown from a niche into an institutional asset class because demand keeps rising while new supply is scarce. This guide explains what counts as IOS, who uses it, what the latest market data shows, how it is priced and what to check before you lease a yard.
What Is Industrial Outdoor Storage?
Industrial outdoor storage is a property type defined by its yard rather than its building. Stockbridge describes IOS assets as sites with a substantial outdoor yard used for storage, heavy industrial activity or truck and vehicle parking, ranging from land with minimal or no buildings to facilities with a building on site.
Research firms draw the line in different places. CBRE’s IOS data, for example, covers single-tenant, net-leased sites with less than 20% building coverage, no more than 50,000 square feet of building and parcels under 40 acres.
| Site type | Typical use | Features to look for |
|---|---|---|
| Truck and trailer parking | Fleet parking, drop yards, trailer staging | Paved or compacted surface, wide gates, turning room |
| Truck terminals | Cross-dock and fleet operations with a small building | Heavy-duty paving, environmental controls, strong truck access |
| Container yards | Port drayage, chassis and container storage | Location near ports and rail, load-bearing surface, stacking area |
| Equipment yards | Equipment rental, construction fleets | Secure fencing, lighting, a shop building for repairs |
| Contractor and materials yards | Trades staging vehicles, pipe, lumber and other materials | Easy highway access, covered storage or a small building |
| Electrified yards | EV fleet charging, battery storage, utility and transformer staging | Available power capacity and room for electrical equipment |
IOS differs from a warehouse that happens to have a yard. A warehouse’s value sits mostly in the building; an IOS site’s value sits mostly in usable, permitted outdoor land. Tenants who cannot find a true IOS site often fall back on an older warehouse with a yard. James Breeze, who leads industrial research for CBRE in the Americas, told Commercial Property Executive that leasing a Class B or C warehouse with an available yard is the primary alternative.
Who Uses Industrial Outdoor Storage?
IOS tenants are businesses whose operations run on vehicles, equipment or materials more than on enclosed space.
- Trucking and logistics companies park tractors and trailers, stage drop trailers and run dispatch near highways and distribution hubs.
- Port and rail operators store containers and chassis near terminals.
- Construction and trades contractors stage vehicles, equipment and materials close to job sites.
- Equipment rental companies store and service fleets of machines.
- Energy and infrastructure users are a growing group. An October 2026 report from Metz Industrial Group of Bussel Realty Corp. points to battery energy storage systems, EV fleet-charging depots, utility substations and transformer staging as uses that need secured outdoor sites with significant power capacity.
- Data center builders need staging yards for heavy equipment and building materials during construction. CRE Daily reported in September 2026 that data center developers account for about 20% of new IOS demand, citing Max Heiden of Catalyst Investment Partners.
IOS Market Data: Vacancy, Rents and Supply
Every major source shows the same pattern: low vacancy, strong rent growth and very little new supply. The exact figures differ because each firm tracks a different set of sites, so compare the direction rather than the levels.
3.6%
IOS vacancy, Q2 2026 (CBRE)
6.5%
Industrial vacancy overall, Q2 2026 (CBRE)
+123%
IOS rent growth since 2020 (Newmark)
Under 2%
Annual new IOS supply (Matthews)
| Indicator | Figure | Source |
|---|---|---|
| Vacancy | 3.6% in Q2 2026, vs. 6.5% for industrial overall | CBRE, as reported by CRE Daily (September 2026) |
| Vacancy | 2.5% in Q4 2025, vs. 6.7% for traditional industrial | CBRE |
| Average rent | $13.14/SF in Q4 2025 (basis not stated), vs. $10.85/SF for traditional industrial | CBRE |
| Vacancy | Around 4%, vs. roughly 7% for traditional industrial | Propmodo (October 2026) |
| Vacancy | Around 5% as of mid-2025 | Newmark |
| Rent growth | +123% since 2020, vs. +58% for bulk warehouse | Newmark |
| Rent growth | +32% since 2021 | CBRE, as reported by Propmodo |
| U.S. footprint | About 1.4 million acres, with about $200 billion of readily tradeable market value | Newmark |
| Investment returns | Five-year annualized returns 126 basis points above the broader industrial sector | Newmark |
| Transaction volume | An estimated $14 billion to $16 billion in 2025 | Metz Industrial Group |
CBRE Q4 2025 figures as reported by Commercial Property Executive and CRE Daily (March 2026); CBRE Q2 2026 vacancy as reported by CRE Daily (September 11, 2026). Newmark figures from its September 2025 report, as reported by REjournals.
Why New IOS Supply Is Scarce
Outdoor yards are hard to add. Propmodo reports that entitling new outdoor storage is close to impossible in many jurisdictions, with local opposition often centered on noise, appearance and low tax revenue per acre. Commercial Property Executive, reporting on CBRE’s data, cites restrictive zoning and increasing local opposition. Breeze adds that IOS sites tend to sit in urban areas near air, rail, truck and sea hubs, where little land is left for new yards.
Some existing supply is also disappearing. In Manassas, Virginia, Propmodo reports that more than 200 acres of outdoor storage, over 20% of the local supply, will be replaced by data centers.
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Browse Industrial ListingsHow Industrial Outdoor Storage Is Priced
IOS is usually priced per usable acre per month rather than per square foot of building. A site’s rate depends on location, surface, security, power and whether it includes a usable building.
| Market tier | Rent per acre per month | Notes |
|---|---|---|
| Primary markets | About $5,000 to $15,000 | Dallas-Fort Worth approaching the upper end |
| Secondary markets | About $3,000 to $6,000 | Some high-growth areas closing the gap |
Source: Matthews, 2026 IOS Sector Update. Indicative ranges; site-specific rents vary widely.
Matthews estimates that IOS rents grew about 8% to 10% in 2024 and 7% to 9% in 2025, and projects another 6% to 8% in 2026. Some port markets sit well above these ranges: Metz Industrial Group reports Northern New Jersey rents of $30,000 or more per acre per month in the strongest markets.
Pricing check
Confirm the usable acreage as well as the parcel size. Setbacks, stormwater areas, easements and building footprints can shrink the yard you can actually use, which raises the effective rent per usable acre.
What to Check Before Leasing an IOS Site
- Permitted use. Even in industrial districts, outdoor storage may need conditional use approval, site plan approval or a variance, and one town’s “outdoor storage” can be another’s contractor yard or truck terminal. Confirm that zoning allows your exact activity, such as truck parking, container stacking, fueling or equipment repair.
- Surface and load. Gravel, compacted base and asphalt behave differently under heavy trucks and equipment. Ask who maintains the surface and who pays for repairs.
- Truck access. Check gate widths, turning radius, curb cuts and the route to the nearest highway. Tight entries slow every move.
- Security. Fencing, lighting, gates and cameras matter for vehicle and equipment yards. Confirm what the landlord provides and what you must add.
- Site condition. Propmodo reports that roughly 60% of existing IOS properties were developed before 2000, and many lack paving, drainage, lighting or security. Inspect before you commit.
- Stormwater and environment. Many jurisdictions regulate runoff from industrial yards. Ask about permits, drainage and any environmental history.
- Power and utilities. EV fleet charging, battery storage and equipment maintenance need real electrical capacity. Ask for the service size and what an upgrade would take.
- Lease terms. IOS leases are commonly net, so tenants typically cover taxes, insurance and upkeep of paving, fencing, lighting and drainage. Clarify end-of-term restoration duties for anything you add.
For building specs such as clear height, loading and power, see our guide to loading docks, ceiling heights and power requirements. For lease structures, see our warehouse lease types guide.
Industrial Outdoor Storage for Owners and Investors
IOS has drawn growing institutional interest, helped by low vacancy, rent growth and limited new supply. Matthews reports stabilized institutional-quality assets trading at 6.00% to 6.75% cap rates in primary markets and 6.75% to 7.75% in secondary markets, 25 to 75 basis points above comparable industrial classes. It puts replacement cost for improved, stabilized sites at roughly $250,000 to $400,000 per usable acre.
Ownership is still fragmented. NAIOP notes that most IOS properties are owned by mom-and-pop investors, while aggregators assemble pools of 20 or more sites, each typically valued between $5 million and $15 million. The main risks sit in entitlement and use: a site’s value depends on what its zoning allows, and some yards are worth more for other uses, such as data centers.
For owners of conventional industrial property, a large yard can earn extra income through trailer parking or outdoor storage leases where zoning allows. Market context by metro is in the Industrial Market Intelligence Hub.
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Frequently Asked Questions
What is industrial outdoor storage (IOS)?
Industrial outdoor storage is industrial-zoned land used mainly for outdoor storage and parking, such as trucks, trailers, containers, construction equipment and building materials. IOS sites usually have a paved or gravel yard and little or no building. Green Street defines IOS most simply as a land site zoned for industrial use where the tenant can store something outside.
What does IOS mean in real estate?
In commercial real estate, IOS stands for industrial outdoor storage, a property type valued mainly for its usable outdoor yard rather than its building. It covers truck and trailer parking, truck terminals, container yards, equipment yards and contractor yards. Institutional investors now treat IOS as its own industrial asset class.
How much does industrial outdoor storage cost to lease?
IOS is usually priced per acre per month. Matthews estimates 2026 rents at about $5,000 to $15,000 per acre per month in primary markets and $3,000 to $6,000 in secondary markets, and the strongest Northern New Jersey locations run $30,000 or more. Rents vary with location, surface, security, power and buildings on site.
Why is industrial outdoor storage hard to find?
New IOS supply is scarce because outdoor yards are hard to entitle. Local opposition and restrictive zoning limit new sites, and Matthews estimates annual deliveries at less than 2% of inventory. CBRE put national IOS vacancy at 3.6% in Q2 2026, against 6.5% for industrial overall.
Who uses industrial outdoor storage?
Trucking and logistics companies, port and container operators, construction contractors and equipment rental firms are the core IOS users. Demand is also growing from energy and infrastructure users, such as EV fleet-charging depots, battery storage projects and utilities, and from data center builders that need staging yards.
What should I check before leasing an IOS site?
Confirm that zoning permits your exact use, check the surface and who maintains it, and test truck access, gate widths and turning room. Review security, site condition, stormwater permits, available power and any building on site. Clarify net lease costs and end-of-lease restoration duties before you sign.
Sources: CBRE U.S. Industrial Outdoor Storage report, Q4 2025, as reported by Commercial Property Executive (March 17, 2026) and CRE Daily; CBRE Q2 2026 IOS vacancy and Catalyst Investment Partners comments, as reported by CRE Daily (September 11, 2026); Newmark, Lots to Gain: Industrial Outdoor Storage Is Outperforming Bulk Warehouse (September 8, 2025), as reported by REjournals; Propmodo, Industrial Outdoor Storage Spans 1.4 Million Acres and Still Is Not Enough (October 26, 2026); Matthews, 2026 IOS Sector Update (2026); Metz Industrial Group, Industrial Outdoor Storage: The Asset Class That Built Itself in Plain Sight, via Mid-Atlantic Real Estate Journal (October 2026); NAIOP Development magazine, IOS Market Consolidation Ramps Up (Spring 2026); Green Street, Industrial Outdoor Storage: A Beautiful Ugly Duckling; Stockbridge, Industrial Outdoor Storage (December 2025); FBT Gibbons, Industrial Outdoor Storage and Zoning: Seven Common Pitfalls for IOS Developers to Avoid (August 25, 2026). Each report reflects the most recent data available at the time of publication.
