A complete walkthrough for building a wood-framed shed from foundation to finished roof. This guide covers a standard 10×12 gable-roof shed — the most popular size for backyard storage. Adjust dimensions to fit your space using our material calculator.
Difficulty
Intermediate
Time
2–4 weekends
Cost (10×12)
$1,500–$4,000
Most jurisdictions allow sheds under 120 sq ft (10×12) without a permit, but this varies widely. Some areas set the threshold at 100 sq ft, others at 200 sq ft. Setback requirements (distance from property lines) apply regardless of permit requirements — typically 3–5 feet from side/rear property lines. Call your local building department before you start. A 5-minute call can save you from tearing down a finished shed.
| Foundation Type | Cost (10×12) | Difficulty |
|---|---|---|
| Gravel pad + concrete blocks | $100–$250 | Easy |
| Concrete pier blocks | $80–$200 | Easy |
| Skid foundation (4×4 or 6×6 runners) | $60–$150 | Easy |
| Concrete slab | $500–$1,200 | Moderate |
| Post & beam | $200–$500 | Moderate |
Recommendation: For most backyard sheds, a gravel pad with concrete deck blocks is the best balance of cost, durability, and simplicity. Level a 12×14 ft area (2 ft larger than the shed on each side), lay 4 inches of compacted gravel, and set deck blocks at 4-ft intervals.
| Material | Est. Cost | |
|---|---|---|
| 2×6 × 12 ft (rim joists) | $16–$24 | |
| 2×6 × 10 ft (end rim joists) | $14–$20 | |
| 2×6 × 10 ft (floor joists, 16" OC) | $63–$90 | |
| ¾" plywood (4×8 sheets, floor) | $160–$240 | |
| Floor Frame subtotal | $253–$374 |
| Material | Est. Cost | |
|---|---|---|
| 2×4 × 8 ft studs (precut 92⅝") | $175–$300 | |
| 2×4 × 12 ft (top/bottom plates, long walls) | $48–$80 | |
| 2×4 × 10 ft (top/bottom plates, short walls) | $40–$64 | |
| 2×4 × 10 ft (headers for door & window) | $20–$32 | |
| Wall Framing subtotal | $283–$476 |
| Material | Est. Cost | |
|---|---|---|
| 2×6 × 8 ft (rafters, 16" OC) | $126–$216 | |
| 2×6 × 12 ft (ridge board) | $10–$16 | |
| 2×4 × 8 ft (collar ties) | $32–$54 | |
| ½" OSB (4×8 sheets, roof sheathing) | $250–$350 | |
| Roof Framing subtotal | $418–$636 |
| Material | Est. Cost | |
|---|---|---|
| 15-lb roofing felt (1 roll = 400 sq ft) | $20–$30 | |
| Drip edge (10 ft lengths) | $24–$42 | |
| Asphalt shingles (bundles) | $200–$315 | |
| Ridge cap shingles | $30–$45 | |
| Roofing nails (5-lb box) | $15–$20 | |
| Roofing subtotal | $289–$452 |
| Material | Est. Cost | |
|---|---|---|
| T1-11 siding panels (4×8) or LP SmartSide | $250–$500 | |
| House wrap (1 roll) | $50–$80 | |
| 1×4 corner trim (8 ft) | $32–$64 | |
| 1×4 fascia boards (12 ft and 10 ft) | $30–$54 | |
| Exterior paint or stain (gallons) | $90–$250 | |
| Siding & Trim subtotal | $452–$948 |
| Material | Est. Cost | |
|---|---|---|
| 16d framing nails (5-lb box) | $20–$30 | |
| 8d nails or 2½" screws | $20–$30 | |
| 3" deck screws (floor) | $12–$18 | |
| Joist hangers (2×6) | $27–$45 | |
| Hurricane ties | $18–$36 | |
| Simpson Strong-Tie angles | $16–$32 | |
| Fasteners & Hardware subtotal | $113–$191 |
| Grand Total (materials) | $1,833–$3,527 |
Calculate exact material quantities for your shed dimensions with our Shed Calculator.
Mark out an area 2 ft larger than the shed on all sides. Remove sod and topsoil 4" deep. Fill with ¾" crushed gravel, compact in 2" lifts with a tamper or plate compactor. Level to within ¼" over the full area. Place concrete deck blocks at 4-ft intervals in a grid pattern. Check level across all blocks.
Cut rim joists to length (two 12-ft and two 10-ft for a 10×12). Assemble the rectangular frame on the deck blocks. Install floor joists at 16" on center using joist hangers. Check square by measuring diagonals — they should be equal. Shim deck blocks if needed to level.
Lay ¾" tongue-and-groove plywood over the joists. Stagger seams. Glue joints with construction adhesive and screw every 8" along joists and 6" along edges. The floor should feel solid with no bounce.
Build each wall flat on the subfloor, then raise it into position. Start with the two long walls (12-ft sides). Frame for your door opening (typically 36" or 48" wide × 78" tall) and any windows. Use double 2×4 headers over openings. Double top plates, overlapping at corners for strength. Plumb, brace, and nail to the floor frame.
Build the gable-end walls with the triangular top section to match your roof pitch. A 6/12 pitch is standard for sheds — the gable peak rises 5 ft above the wall top plate on a 10-ft wide shed. Raise, plumb, and nail. Tie all corners together with overlapping top plates.
Set the ridge board on temporary supports at the correct height. Install rafters in opposing pairs at 16" on center, nailing to the ridge board and birdsmouth-cut to sit on the top plates. Add collar ties to every other rafter pair for rigidity. Add hurricane ties at rafter-to-plate connections.
Install ½" OSB starting from the bottom edge. Stagger seams. Leave a ⅛" gap between panels for expansion. Overhang the OSB 1" past the fascia line for drip edge.
Install drip edge along eaves first, then roofing felt (start from bottom, overlap 4"). Install drip edge on gable ends over the felt. Snap chalk lines and install shingles from bottom up. Finish with ridge caps.
Wrap walls with house wrap, taping all seams. Install T1-11 or SmartSide panels starting from corners. Cut around door and window openings. Install corner trim and fascia boards. Caulk all joints.
Install pre-hung door or build a door from siding material on a Z-brace. Add trim around the door. Install window(s) if included. Prime and paint or stain all exterior surfaces. Add a hasp or latch.
Not sure which sheathing to use? See our OSB vs Plywood comparison.
Materials run $1,500–$3,500 depending on your choices for siding, roofing, and finishing. The foundation adds $100–$400. A comparable pre-built shed delivered to your property costs $3,000–$6,000, so building yourself saves roughly 40–60%.
Yes, though having a helper for wall raising and roof framing makes it significantly easier and safer. The floor, siding, and roofing can all be done solo. Plan for 2–4 weekends working alone, or 1–2 weekends with a helper.
It varies by jurisdiction — commonly 100 to 200 square feet. A 10×10 (100 sq ft) is almost universally permit-free. A 10×12 (120 sq ft) is under the threshold in most areas but not all. Always check local codes. Setback requirements apply regardless of permit status.
2×4s are standard for sheds and perfectly adequate. Use 2×6s only if you plan to insulate the shed for a workshop or if local code requires it (rare for accessory structures).
4/12 to 6/12 is the normal range. 6/12 gives better headroom in the loft area and sheds rain/snow more effectively. 4/12 is simpler to build and uses less material. Don't go below 3/12 unless you use a membrane roof instead of shingles.
A well-built shed with quality materials (pressure-treated floor frame, good siding, proper roofing) lasts 20–30 years or more. The most common failure points are the floor frame (ground moisture), roof leaks, and siding deterioration — all preventable with proper construction and occasional maintenance.