The cost to build 100 storage units depends on their size and the development scope. If each unit averages 100 rentable square feet, the project has about 10,000 rentable square feet. Wasatch Structures estimates $300,000 to $550,000 for the shell and doors at that size, and $700,000 to $1.4 million for its single-story project example. Quote land and any financing separately.
Cost to Build 100 Storage Units by Rentable Area
Build the Unit Mix Before Pricing
Multiply the area of each unit size by the number of those units. Add the areas to calculate rentable space. Ask your designer for gross building area separately so you can compare bids that use different measurements.
Wasatch Structures’ 10,000-square-foot example


Compare Shell and Site Costs
Ask each bidder to identify the slab, steel, doors, erection, grading, stormwater, utility connections and security. A steel kit and an erected building can cover different work.


Price Climate Control and Operating Costs
Include insulation, HVAC, lighting and controls for climate-controlled space. Request separate costs for access systems, insurance, property taxes and lease-up. Use quotes for your market when comparing drive-up and climate-controlled space.
Wasatch construction cost guide

Frequently Asked Questions
How much space do 100 units need?
At an average of 100 rentable square feet each, 100 units total about 10,000 rentable square feet. Building and site area can be larger.
What does the shell estimate include?
The cited Wasatch example describes the building shell and doors. Confirm slab, erection and site work on the written quote.
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