Estimate the cost to build a post-frame (pole-barn) building. Pick dimensions, height, openings, finish, and concrete. 2026 data; not a contractor bid.
| Item | Quantity | Estimated range |
|---|
Got a contractor quote? Compare it to the planning range.
Post-frame buildings are priced by footprint and finish level. These are mid-grade builds with a concrete floor and basic electrical:
| Building | Footprint | Use | Finished cost |
|---|---|---|---|
| 24 × 30 | 720 sq ft | Small garage | $14,000 – $28,000 |
| 40 × 30 | 1,200 sq ft | Workshop | $22,000 – $45,000 |
| 60 × 40 | 2,400 sq ft | Ag / equipment | $28,000 – $55,000 |
The headline per-square-foot numbers you see advertised ($18–$58/sq ft) are usually shell only — posts, trusses, metal roof and siding. A building you can actually use adds the expensive parts:
Fully finished, the total often runs close to double the bare shell.
Match the build to the job. A garage or workshop wants a 4-inch slab ($6.50–$10.50/sq ft) and standard overhead doors; agricultural or equipment storage with tractors, lifts, or an RV needs a 6-inch slab ($8.50–$13.50) and taller commercial doors (a 16×14 door runs $3,200–$4,800). Post-frame construction is faster and cheaper than stick-built for large clear-span spaces, and easier to insulate and finish than a bare steel building — which is why it dominates the shop-and-garage market.
A 24x30 small garage runs $14,000-$28,000 mid-grade with concrete and basic electrical. A 40x30 workshop $22,000-$45,000. A 60x40 ag pole barn $28,000-$55,000 budget grade.
Pole barn (post-frame) uses wood posts in concrete with steel skin, costs less than red-iron metal building, and goes up faster. Metal buildings are stronger for clear-spans over 60 ft and commercial use.
Yes — most states require a building permit ($250-$600), and many require engineered drawings if footprint exceeds 1,000 sf or if ag-exempt status does not apply.
A 40x60 (2,400 sq ft) post-frame building runs roughly $28,000-$55,000+ finished with a concrete floor and basic electrical, similar to a 60x40 footprint. Shell-only is far less; insulation, doors, and full electrical push it up.
Shell-only ($18-$58 per sq ft) is the structure - posts, trusses, metal roof and siding. Finished adds the concrete floor, insulation, overhead doors, and electrical, which together often roughly double the bare-shell cost.
4 inches ($6.50-$10.50 per sq ft) is standard for a garage or workshop. Step up to 6 inches ($8.50-$13.50) for heavy equipment, vehicle lifts, or tractors that would crack a thinner slab.
Most jurisdictions require a permit; a few exempt very small jobs. Always confirm with your local building department.
Depends on scope; basic jobs are 1-3 days, complex jobs run 1-2 weeks.
Get 2-3 written quotes for the same scope. Big spreads usually mean different inclusions, not necessarily different value.
Workmanship warranty 1-5 years from the contractor; manufacturer warranty on materials separately.
Some scopes are DIY-friendly with rented tools; others (gas, electrical, structural, plumbing) require licensed trades by code.
