How much does it cost to build a shed?
From about $2,311 for a 4x8 lean-to to $7,730 for a 16x20 gable, in materials. Bigger sheds cost less per square foot: from $72.22 down to $21.95 at the cheapest siding and roofing.
| Size | Roof | Materials | Per sq ft |
|---|---|---|---|
| 4x8 | lean-to | $2,311 to $2,516 | $72.22+ |
| 6x8 | lean-to | $2,713 to $2,994 | $56.53+ |
| 8x8 | gable | $3,141 to $3,381 | $49.08+ |
| 8x8 | lean-to | $2,894 to $3,203 | $45.21+ |
| 8x10 | gable | $3,415 to $3,769 | $42.68+ |
| 8x10 | lean-to | $3,401 to $3,775 | $42.51+ |
| 8x12 | gable | $3,670 to $4,102 | $38.23+ |
| 8x12 | lean-to | $3,551 to $3,995 | $36.99+ |
| 10x10 | gable | $3,853 to $4,305 | $38.53+ |
| 10x10 | lean-to | $3,705 to $4,042 | $37.05+ |
| 10x12 | gable | $4,095 to $4,575 | $34.12+ |
| 10x12 | lean-to | $3,895 to $4,269 | $32.46+ |
| 8x16 | gable | $4,257 to $4,805 | $33.25+ |
| 10x14 | gable | $4,540 to $4,980 | $32.43+ |
| 10x14 | lean-to | $4,243 to $4,614 | $30.31+ |
| 12x12 | gable | $4,436 to $4,895 | $30.81+ |
| 12x12 | lean-to | $4,299 to $4,652 | $29.85+ |
| 10x16 | gable | $4,905 to $5,395 | $30.66+ |
| 12x14 | gable | $4,861 to $5,348 | $28.93+ |
| 12x16 | gable | $5,201 to $5,808 | $27.09+ |
| 10x20 | gable | $5,519 to $6,203 | $27.59+ |
| 12x18 | gable | $5,561 to $6,217 | $25.75+ |
| 14x16 | gable | $5,644 to $6,329 | $25.20+ |
| 12x20 | gable | $5,904 to $6,570 | $24.60+ |
| 16x16 | gable | $6,139 to $6,841 | $23.98+ |
| 16x20 | gable | $7,025 to $7,730 | $21.95+ |
Each range runs from the cheapest to the dearest siding and roofing the engine can build for that shed (LP SmartSide, T1-11 or board-and-batten siding; asphalt shingles or metal). Open a size for the full table and where the money goes.
What moves the price
- Floor area: framing, floor and roof grow with it, but doors, windows and hardware don't, which is why the price per square foot falls as sheds get bigger.
- Siding and roofing: the two biggest choices after size. Compare them for any size in the free materials calculator.
- Roof style: a lean-to has one slope and no ridge; a gable gives more headroom. See gable vs lean-to on the same footprint.
What isn't in the price
Not included: sales tax, delivery, paint or stain, a permit if your town needs one, tools, and labor if you hire a builder. Prices are typical US big-box shelf prices for 2025-26 and move up or down by about a third with region and season, so check your local store before you buy.
Any size from 4' to 20' not listed here: the calculator prices it, and the plans cover it.