DIY Shed Cost Calculator
Estimate what it costs to build a shed yourself. Enter the footprint and wall height, choose a quality tier, foundation, roofing and siding, then add a contingency and any hired labor. You get a per-category material breakdown, cost per square foot, and total — with a cost-by-category chart, a by-quality-tier table, and a downloadable PDF.
| Category | Rate /sf | Cost | Share |
|---|---|---|---|
| Enter a shed to see costs | |||
| Tier | Materials | Cost / sf | Total |
|---|---|---|---|
| Enter a shed to compare | |||
How to use the DIY shed cost calculator
Enter the footprint and wall height, choose a quality tier, foundation, roofing and siding, then add a contingency and any hired labor. You get a per-category cost breakdown, the cost per square foot, and the total — plus a cost-by-category chart and a comparison across quality tiers.
Enter the shed size
Length, width and wall height in feet. Footprint is length × width; taller walls raise framing and siding.
Pick the materials
Choose economy, standard or premium, plus the foundation, roofing and siding that set the rates.
Add contingency & labor
Set a ~10% buffer. Leave labor at 0 for pure DIY, or add a per-square-foot rate if you’re hiring help.
Read the total & save a PDF
See the total, cost per square foot and category breakdown, compare tiers, and download the report.
How the shed estimate is calculated
Every part of the shed carries a per-square-foot rate. Add the rates for a combined rate, multiply by the footprint for the materials subtotal, then add a contingency and any labor to reach the total and the all-in cost per square foot.
Worked example — a 12 × 10 ft standard shed, 8 ft walls, skids, shingles, T1-11, 10% contingency, DIY
Footprint: 12 × 10 = 120 sq ft
Height factor: 8 ÷ 8 = 1.0 (no premium)
Combined rate: ≈ $33.50/sf (standard tier + skids + shingles + T1-11)
Materials: 120 × 33.50 ≈ $4,020
Contingency: 4,020 × 10% ≈ $402 · Total: ≈ $4,420
About $4,400 all-in for a 120 sq ft standard DIY shed — roughly $37/sq ft with the contingency, and $0 labor because you’re building it.
Shed cost reference charts
The comparisons that come up most — cost by shed size, the quality-tier range, foundation and roofing and siding options, and where the money goes across categories.
| Size | Footprint | Economy | Standard | Premium |
|---|---|---|---|---|
| 8 × 8 ft | 64 sq ft | ~$1,100 | ~$2,150 | ~$3,300 |
| 8 × 10 ft | 80 sq ft | ~$1,400 | ~$2,700 | ~$4,100 |
| 10 × 12 ft | 120 sq ft | ~$2,100 | ~$4,000 | ~$6,200 |
| 12 × 16 ft | 192 sq ft | ~$3,300 | ~$6,400 | ~$9,900 |
| 12 × 20 ft | 240 sq ft | ~$4,200 | ~$8,000 | ~$12,400 |
Figures are materials only for a DIY build with skids, shingles and T1-11 siding, before contingency, and are rounded ballparks — your selections and local prices shift them. Cost scales almost directly with footprint.
| Tier | Roughly /sf (materials) | What you get |
|---|---|---|
| Economy | ~$17/sf | Basic utility shed — standard framing, rolled or basic roof, plain doors |
| Standard | ~$28/sf | Mid-grade lumber, shingles, better doors and windows, some trim |
| Premium | ~$42/sf | Upgraded lumber and sheathing, premium openings, full trim and finishes |
Per-square-foot rates are the combined materials rate before foundation, roofing and siding upgrades and before contingency. The tier sets framing, roof structure, doors, windows and hardware grades.
| Category | Option | Rate /sf | Notes |
|---|---|---|---|
| Foundation | Gravel pad | $2.50 | Cheapest; good drainage |
| Foundation | PT skids | $3.50 | Moveable |
| Foundation | Concrete piers | $4.50 | Sloped or soft ground |
| Foundation | Concrete slab | $8.00 | Most durable; workshop floor |
| Roofing | Rolled | $2.50 | Lowest cost |
| Roofing | Shingles | $3.00 | Most common |
| Roofing | Metal | $5.00 | Longest life |
| Siding | T1-11 | $3.00 | Budget plywood siding |
| Siding | Vinyl / metal | $4.50–5.00 | Low maintenance |
| Siding | LP SmartSide | $5.50 | Durable engineered wood |
| Siding | Cedar / wood | $9.00 | Premium look, most expensive |
Rates are per square foot of floor area. Siding scales with wall height off an 8-foot baseline; foundation and roofing stay tied to the footprint.
| Category | Share of materials | Driven by |
|---|---|---|
| Floor | ~19% | Footprint, tier |
| Walls | ~15% | Footprint, tier, wall height |
| Roof structure | ~13% | Footprint, tier |
| Doors & windows | ~13% | Tier |
| Siding | ~9% | Siding choice, wall height |
| Roofing | ~9% | Roofing choice |
| Foundation | ~10% | Foundation choice |
| Hardware | ~9% | Tier |
Shares are approximate for a standard-tier shed on skids and shift with your selections — a slab foundation or cedar siding pulls its own share up. No single category dominates, which is why the all-in per-square-foot rate is the number to compare.
A shed’s cost is the footprint times a per-square-foot rate set by the quality tier and your foundation, roofing and siding picks, with a contingency and optional labor added on top. Footprint drives most of it; the selections fine-tune the rate.
- Footprint is the biggest lever — cost scales almost directly with floor area, so size the shed to what you actually need.
- Tier roughly doubles the rate — premium is about 2.5× economy per square foot across framing and finishes.
- Labor is the DIY saving — left at zero here; it’s often the largest line on a contractor’s quote.
Everything the calculator works out
One set of selections gives you the total, the cost per square foot, a per-category breakdown and the materials subtotal — plus a comparison across quality tiers and a report you can take to the yard.
The figures behind a shed budget
Built for anyone pricing a shed build
A backyard storage shed, a garden workshop, a he-shed or she-shed — the per-square-foot math is the same, and seeing where the money goes before you buy is what keeps a weekend project on budget.
Pricing a storage or garden shed to build over a few weekends, and wanting a realistic materials budget before the first lumber run.
- Leave labor at $0 for DIY
- Start economy or standard tier
- Add 10–15% contingency
Comparing a DIY build against a prefab kit or a contractor quote, and testing how size and tier move the all-in number.
- Compare tiers side by side
- Add labor to match a quote
- Use cost/sf to compare sizes
Giving a client a quick ballpark for a shed build, with a clear category breakdown and a labor line they can see.
- Enter your labor rate /sf
- Show the category shares
- Save the PDF with the estimate
7 tips for budgeting a shed build
The decisions that quietly blow a shed budget — or trigger a permit problem — and the checks that keep the estimate honest.
DIY shed cost FAQ
The budgeting, sizing and build-vs-buy questions people ask most when planning a shed.
A DIY shed typically runs about $15 to $35 per square foot in materials, so a 10-by-12-foot shed is usually around $1,800 to $4,200 depending on the tier, foundation, roofing and siding. Building it yourself saves the labor, often the largest line on a contractor’s quote.
The calculator derives a per-square-foot rate from your selections, multiplies by the footprint, then adds contingency and any labor. Treat it as a planning estimate — your real cost depends on local lumber prices and the design.
Each part — foundation, floor, walls, roof structure, roofing, siding, doors and windows, hardware — has a per-square-foot rate. Add them for a combined rate, multiply by the footprint for the materials subtotal, add contingency and any labor for the total, then divide by the footprint for the all-in cost per square foot.
Walls and siding scale with wall height off an 8-foot baseline, so a taller shed carries a higher rate for those two. The result is a materials-based figure, not a market price, so check it against a real supplier quote.
A gravel pad is the least expensive and the standard choice for most small to mid-size sheds, giving good drainage at low cost. Pressure-treated skids cost a little more but make the shed moveable, which can matter for permits and property lines.
Concrete piers cost more and suit sloped or soft ground; a full slab is the most expensive but most durable and the best base for heavy equipment. Match the foundation to the ground, the shed’s weight and whether you might relocate it — not just to the lowest price.
It depends on local code, but many areas require a permit once a shed exceeds a size threshold — often 100, 120 or 200 square feet, though it varies widely. Some areas require one for any permanent structure, while small sheds on skids may be exempt as moveable.
Setback rules — how close the shed can sit to property lines and buildings — apply even when no permit is needed. Always check with your local building department first; a permit is cheap compared with being told to move or tear down a finished shed.
The biggest saving is doing the labor yourself, which this calculator assumes. Beyond that, a simple gable or lean-to on a gravel pad with economy framing, rolled roofing and T1-11 siding keeps materials at the bottom of the range.
A modest footprint and standard 8-foot walls avoid the taller-wall premium, and standard lumber lengths with a simple roofline cut waste. Reclaimed doors, windows and sheathing trim it further — but don’t economize on the foundation or roofing, where failures are expensive later.
Building it yourself is usually cheapest because you pay only for materials and your own time, which is why a DIY build often lands well below a comparable prefab or kit. A kit costs more but saves time and guesswork; a contractor-built shed is most expensive because it includes skilled labor.
The honest comparison is materials-plus-your-time against the delivered price of a kit of the same size and quality. If your time is scarce or the design is complex, a kit can be worth the premium; if you have the weekends and basic tools, building saves the most.
Taller walls use more framing and siding, so those two categories scale up with wall height while floor, foundation and roof stay tied to the footprint. The calculator scales walls and siding from an 8-foot baseline, so 9-foot walls raise those costs by roughly an eighth.
Footprint still drives most of the total, but a tall shed for loft storage or standing headroom costs more per square foot than a standard-height one of the same floor area. If headroom isn’t needed, keeping walls at 8 feet is an easy saving.
By default no — the calculator estimates materials for a DIY build, with labor set to zero. That’s the point of a DIY estimate: it shows what the shed costs if you supply the work.
If you’ll hire help, enter a per-square-foot labor rate and it’s added to the total and included in the contingency. Hired shed labor commonly runs $15–$35 per square foot depending on region and complexity, but get a real quote — labor is where estimates vary most.
Estimation Only — Not a Quote: This calculator estimates the cost to build a shed from typical per-square-foot material rates for a simple gable shed, scaled by your footprint, wall height and selections. Rates vary widely by region, current lumber and material prices, shed size and design, and are averages rather than live pricing. By default it estimates materials for a do-it-yourself build with labor set to zero; any labor rate you enter is your own figure, not a market quote. The estimate does not include site preparation, electrical, plumbing, interior finishing, delivery, permit fees, or sales tax. Permit requirements and setback rules vary by jurisdiction and must be confirmed with your local building department before building. For planning purposes only; price your actual materials list with a supplier and confirm permit requirements before you commit.