Cost of a 20x20 Metal Barn
Estimated cost ranges and budget drivers for a 20x20 metal barn, including site prep, doors, and upgrades.
Quick estimate
A practical way to think about metal barn pricing is to separate marketing claims from jobsite realities: size and wind requirements is where many first-time buyers underestimate the budget. If you document your priorities early, you can compare quotes apples-to-apples instead of chasing the lowest headline number.
| Scenario | $/sq ft (shell) | Approx shell cost | Notes |
|---|---|---|---|
| Base | 20 | $8,000 | Base shell, minimal openings |
| Balanced | 24 | $9,600 | Better doors + ventilation |
| Heavy-duty | 28 | $11,200 | Higher wind spec + upgrades |
What to budget beyond the shell
- Site work: clearing, grading, drainage, and base materials.
- Foundation: slab/gravel/pier options and any rebar/thickened edges.
- Openings: roll-up doors, framed openings, man doors, windows.
- Comfort: insulation, liners, ventilation strategy, lighting.
Move from research to options
Use a quote form to validate pricing for your size and wind requirements, then compare add-ons and doors based on your use case.
FAQ
How long does a typical 20x20 metal barn last?
With normal maintenance and appropriate coatings, many structures perform for decades. Longevity depends on climate exposure, fastener quality, and whether water is managed away from the building.
Do I need a permit for a 20x20 metal barn?
In many areas, yes. Requirements vary by county/city. Confirm setbacks, engineered drawings, and wind load requirements with your local building department before purchasing.
Is it better to buy a kit or a turnkey package?
Kits can save money if you manage site work and labor efficiently. Turnkey packages simplify coordination but often cost more. Your best choice depends on timeline and risk tolerance.
What drives the price of a 20x20 metal barn the most?
Size, wind/snow requirements, door count, insulation, and site prep are the biggest cost drivers. The shell is only one part of the total budget.
Also see: metal barn cost estimator.