How Much Does It Cost to Build 50, 100, or 200 Storage Units? (2026 Unit-Count Cost Guide)
Most self-storage cost guides talk in dollars per square foot. Most first-time developers think in units. This guide converts one to the other, so you can see what 50, 100, or 200 units actually cost to build in 2026 and whether the rents can carry it.
In 2026, building 100 single-story drive-up storage units costs about $700,000 to $1.2 million before land, or roughly $7,000 to $12,000 per unit, based on an average unit of about 125 square feet and construction costs of $50 to $90 per square foot. 50 units run about $350,000 to $650,000, and 200 units about $1.3 to $2.3 million. Climate-controlled or multi-story projects cost roughly 1.5 to 2.2 times more per unit.
Start With the Unit Mix, Not the Unit Count
"One hundred units" can mean 10,000 square feet or 20,000 square feet, depending on the mix. That is why unit count alone is a weak budgeting number. The 10x10 is the benchmark and the most popular size, per Storeganise, but a real facility mixes sizes to match local demand.
A typical blended mix for a suburban drive-up facility looks something like this:
5x5 (25 SF)
About 10 percent of units. Highest rent per square foot, lowest revenue per door.
5x10 (50 SF)
About 20 percent. Popular with apartment renters and students.
10x10 (100 SF)
About 30 percent. The market benchmark for pricing and demand.
10x15 (150 SF)
About 15 percent. The one-bedroom-apartment unit.
10x20 (200 SF)
About 20 percent. Household moves and small business inventory.
10x30 (300 SF)
About 5 percent. Contractors, vehicles, and whole-house moves.
That mix averages about 125 net rentable square feet per unit. So 100 units need about 12,500 net rentable square feet. Inside Self Storage notes a mix averaging 120 square feet runs more efficiently than one averaging 90, because every door, partition, and lock costs money whether the unit is 25 or 300 square feet.
Cost to Build 50, 100, and 200 Storage Units
Here is what each unit count costs to build in 2026 as single-story drive-up, using the mix above:
50 units: about $350,000 to $650,000
About 6,250 net rentable square feet, often one or two buildings. At this size, fixed costs like the gate, office, paving, stormwater, and permits spread across very few doors, so per-unit cost runs highest, around $7,000 to $13,000. Storable notes facilities under 40,000 square feet are typically not as cost-effective. Fifty units works best as an add-on to an existing facility, on land you already own, or alongside another use like RV or boat storage.
100 units: about $700,000 to $1.2 million
About 12,500 net rentable square feet, or 13,500 to 14,500 gross. Storeganise's 100-unit worked example lands at about $997,000 in construction plus $179,000 in soft costs, or about $1.18 million before land, which falls inside this range. Adding their $392,000 land assumption brings the total to about $1.57 million, or roughly $15,700 per unit all-in.
200 units: about $1.3 to $2.3 million
About 25,000 net rentable square feet across several buildings. Per-unit cost starts to fall, to roughly $6,500 to $11,500, as site work, security, and soft costs spread wider. This is where small-market projects start to pencil as standalone investments.
Climate-controlled and multi-story
Multiply by roughly 1.5 to 2.2 times. Storeganise puts climate-controlled construction at $80 to $125 per square foot and multi-story at $105 to $175. Coastal California, the Northeast, and the Pacific Northwest run 15 to 35 percent higher.
Cost Per Square Foot by Building Type (2026)
The per-unit numbers above come from these 2026 per-square-foot benchmarks:
- Single-story drive-up: $50 to $65 per square foot (Storable, December 2025) and $55 to $90 (Storeganise 2026)
- Single-story climate-controlled: $80 to $125 per square foot
- Multi-story climate-controlled: $90 to $120 (Storable) and $105 to $175 (Storeganise)
- Adaptive reuse conversions: $35 to $75 per square foot
- Covered RV and boat storage: $25 to $55 per square foot
- Site development: $4.25 to $8 per square foot of site in typical conditions, much more with poor soils or heavy stormwater requirements
- Soft costs: 15 to 22 percent of total, with permits alone running $10,000 to $40,000
Inside Self Storage's June 2026 development feature quoted TCG's range for ground-up self-storage at $25 to $130 per square foot, depending on building type and market. For the full per-square-foot breakdown by region, see our main guide to the average cost to build a self-storage facility, and our self-storage facility construction guide for process and design.
Where the Money Goes: Buildings, Doors, Site, and Tech
A single-story drive-up facility is mostly a pre-engineered metal building, a lot of roll-up doors, and a lot of asphalt. The line items that move the budget:
- Metal building system. Manufacturers like Janus International, Trachte, BETCO, and Mako Steel sell by quote only. TCG estimates mini-storage building materials at about $20 to $35 per square foot, before erection. See our PEMB cost per square foot guide.
- Roll-up doors. TCG estimates $450 to $900 per door installed in 2026, depending on width, gauge, and wind rating. On 100 units, that is $45,000 to $90,000.
- Hallway and partition systems for climate-controlled or conversion projects: about $12 to $25 per net rentable square foot (TCG estimate).
- Site work and paving. Drive aisles for drive-up storage are wide, and paving often rivals the building cost. See commercial site development cost per acre.
- Gate, access control, cameras, and software. About $25,000 to $75,000 on small sites and $75,000 to $200,000 on larger ones. Smart locks add roughly $150 to $350 per door (TCG estimates).
- Fire protection and code. Multi-story buildings bring sprinklers and fire ratings. See NFPA 13 sprinkler design changes.
Because TCG self-performs PEMB erection, we control the largest labor line on a drive-up project instead of marking up a subcontractor. Learn more on our pre-engineered metal buildings page.
How Many Storage Units Fit on an Acre?
Typical building coverage on a self-storage site is 30 to 50 percent, per Storeganise's units-per-acre analysis. That works out to roughly 130 to 215 ten-by-ten-equivalent units per acre for single-story drive-up. Using a blended 125 square foot average unit, plan on roughly 100 to 170 units per acre. Climate-controlled single-story yields about 25 percent fewer units because of corridors.
So a 100-unit drive-up project needs roughly 0.6 to 1.0 acre of usable land, and 200 units need about 1.2 to 2 acres. Typical new facilities sit on 2.5 to 5 acres, per Storable. Setbacks, stormwater detention, and landscaping requirements often decide the real number, so run a site plan before you buy.
Does It Pencil? A Simple 100-Unit Payback Model
SpareFoot's May 2026 data puts national average monthly rents at $34.89 for a 5x5, $50.92 for a 5x10, $80.43 for a 10x10, $109.03 for a 10x15, and $130.14 for a 10x20. StorageCafe shows climate control adding a meaningful premium.
Here is a simple, illustrative model for 100 drive-up units:
- About $95 average monthly rent across the mix, at 88 percent occupancy: about $100,000 per year in gross revenue
- At a 55 percent operating margin: about $55,000 in net operating income
- At $1.1 to $1.6 million all-in including land: a 3.5 to 5 percent yield on cost
Market timing matters too. Yardi Matrix's August 2026 report shows 10x10 street rates at $16.47 per square foot annually, with only 4 of the top 30 metros positive year over year, and 2.1 percent of stock under construction. CRE Daily reports Phoenix, Sarasota-Cape Coral, and Orlando carry the heaviest pipelines. IRR's 2026 outlook puts Class A cap rates at 5.0 to 5.5 percent and Class C at 6.75 to 8.0 percent. Check local supply before you commit. The Self Storage Association and SpareFoot industry statistics are good starting points.
How to Get a Real Number for Your Site
- Confirm zoning. Self-storage is not allowed by right in many zones. Check before you design.
- Run a site plan and unit mix against local demand and competitor rents.
- Price the building and site together. On drive-up projects, site work can decide the budget.
- Choose delivery. Design-build with a contractor who self-performs the metal building usually produces the lowest total cost and fastest schedule.
- Line up financing early. See current SBA 504 construction loan terms and test your deal in the loan qualifier.
TCG builds self-storage nationwide. Visit our self-storage construction page or local pages for Nashville, Austin, Houston, Charlotte, Denver, and Minneapolis. Converting an existing building? See adaptive reuse and building conversions.
Frequently Asked Questions
Building 100 single-story drive-up storage units costs about $700,000 to $1.2 million before land in 2026, or about $7,000 to $12,000 per unit, assuming a blended mix averaging about 125 square feet per unit. Climate-controlled or multi-story versions cost roughly 1.5 to 2.2 times more.
Building 50 drive-up storage units costs about $350,000 to $650,000 before land in 2026. Per-unit cost runs highest at this size because the gate, paving, permits, and security spread across fewer doors, so 50-unit projects work best as expansions or on land you already own.
Single-story drive-up storage costs about $50 to $90 per square foot in 2026, climate-controlled single-story about $80 to $125, and multi-story climate-controlled about $90 to $175. Site development and soft costs are additional, with soft costs typically 15 to 22 percent of total.
About 100 to 170 drive-up units of blended sizes fit on one acre, or 130 to 215 ten-by-ten-equivalent units, at typical 30 to 50 percent building coverage. Climate-controlled single-story yields about 25 percent fewer units because of interior corridors.
It can be, but small projects are tight. A 100-unit drive-up project on purchased land often yields only 3.5 to 5 percent on cost at national average rents, below the roughly 8 percent needed to build into a 6.5 percent exit cap. Owned land, expansions, higher local rents, and 200+ units improve returns.
Roll-up storage doors cost about $450 to $900 each installed in 2026, depending on width, gauge, and wind rating, based on TCG estimates. Smart locks add roughly $150 to $350 per door.
A single-story drive-up facility typically takes 4 to 8 months to build after permits, and multi-story climate-controlled projects take longer. New facilities commonly need 14 to 36 months after opening to reach stabilized occupancy.
Yes. Adaptive reuse conversions of warehouses, big-box retail, and office buildings cost about $35 to $75 per square foot, usually less than ground-up multi-story, but efficiency depends on column spacing, floor loads, and fire protection.
Have Land and a Unit Count in Mind? Get a Real Number
TCG self-performs PEMB erection and builds self-storage nationwide under one design-build contract. Run a quick budget through TCG.ai, or send your site and we will return a unit mix, site plan concept, and construction budget.
Related Reading
Sources
- Yardi Matrix via Multi-Housing News: Self-Storage National Report, August 2026
- Yardi Matrix via Multi-Housing News: June 2026 Report
- Yardi Matrix: Self-Storage Rent Growth
- CRE Daily: Self-Storage Rates Stabilize as Supply Slows
- StorageCafe: Self-Storage Industry Statistics
- SpareFoot: How Much Does a Storage Unit Cost
- SpareFoot: Self-Storage Industry Statistics
- Storable: Storage Facility Construction Cost
- Storeganise: Self-Storage Building Costs
- Storeganise: How Many Storage Units Per Acre
- Inside Self Storage: The New Face of Self-Storage Development
- Inside Self Storage: Going Vertical in Self-Storage
- Boxwell: Maximizing Rentable Square Footage
- Radius+: Buy or Build, the Numbers That Settle It
- IRR Viewpoint: Self Storage Report 2026
- Janus International
- Trachte Building Systems
- BETCO
- Mako Steel
- Self Storage Association
Cost figures are 2025 to 2026 published benchmarks and TCG field experience. They are planning ranges, not bids. Get a project-specific number through TCG.ai or a call with our team.
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