How much does it cost to build a 16x20 shed?
About $7,025 to $7,730 in materials for a 16x20 shed (320 square feet, also written 20x16), or $21.95 to $24.16 per square foot. The figures are our plans engine's priced materials list for this exact size, framing to roofing.
16x20 gable shed: $7,025 to $7,730
| Siding and roofing | Materials | Per sq ft |
|---|---|---|
| LP SmartSide siding, asphalt shingles | $7,025 | $21.95 |
| LP SmartSide siding, metal roof | $7,094 | $22.17 |
| T1-11 siding, asphalt shingles | $7,307 | $22.84 |
| T1-11 siding, metal roof | $7,376 | $23.05 |
| Board and batten siding, asphalt shingles | $7,662 | $23.94 |
| Board and batten siding, metal roof | $7,730 | $24.16 |
Where the money goes (LP SmartSide siding and asphalt shingles)
| Part | Cost | Share |
|---|---|---|
| Plywood, OSB and siding panels | $2,462 | 35% |
| Framing lumber | $1,821 | 26% |
| Roofing | $874 | 12% |
| Nails, screws and fasteners | $694 | 10% |
| Trim and finishing | $517 | 7% |
| Foundation (skids, blocks, gravel) | $388 | 6% |
| Door and window parts | $216 | 3% |
| Hardware | $54 | 1% |
Optional extras the plan lists but leaves out of the total come to about $66 more.
16x20 Gable Shed plans: cut list, drawings and the full materials list · Price your own options in the free calculator
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.
Similar sizes
- What a 12x18 shed costs to build (216 sq ft)
- What a 14x16 shed costs to build (224 sq ft)
- What a 12x20 shed costs to build (240 sq ft)
- What a 16x16 shed costs to build (256 sq ft)
Questions
How much does it cost to build a 16x20 shed?
About $7,025 to $7,730 in materials at typical US big-box prices, depending on the roof style, siding and roofing you choose: $21.95 to $24.16 per square foot of floor. Tax, delivery, paint and labor are extra.
What makes a 16x20 shed cost more?
Siding and roofing move the price most. For the gable version, LP SmartSide siding and asphalt shingles is cheapest and board and batten siding and a metal roof costs $705 more.
Is a 20x16 shed the same price?
Yes: a 20x16 shed has the same 320 square feet, and the materials are the same whichever way round you write it.
The plans are a guide: check local codes, and your building department, before you build.