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Price a deck and build its material list: installed cost by material, decking boards, joists and beams, posts and footings, stairs, railing, stain and fasteners — plus a cost and material list for every common deck size.
With these inputs:
| Result | Value |
|---|---|
| Estimated total cost | $8,294 – $10,598 |
| Square footage | 192 sqft |
| Avg. cost per sqft | $48.00 |
| Material | Composite (Trex/TimberTech) |
| Materials (~55%) | $5,069 |
| Labor (~35%) | $3,226 |
| Hardware + permits (~10%) | $922 |
Range reflects regional labor variation. Get 3 local quotes to refine.
A new deck costs about $19.80–$25.30 per square foot installed in pressure-treated pine and $43.20–$55.20 in composite, up to $74.75 for ipe. Get a complete installed-cost estimate for your own deck from its square footage, material choice, height and structural complexity. The breakdown separates materials, labour, railing, stairs and permit so you can line the figure up against a contractor's quote item by item rather than on the bottom number. Ranges are national averages and the assumptions behind them are stated on this page.
On this calculator's model, about $19.80–$25.30 per square foot installed for pressure-treated pine, $28.80–$36.80 for cedar, $43.20–$55.20 for composite and $52.20–$66.70 for PVC, for a standard deck with railings and one stair. HomeAdvisor (updated June 2026) puts labor alone at $15 to $35 per square foot.
A simple ground-level rectangle in pressure-treated pine: about $17.82–$22.77 per square foot installed on this calculator's simple-rectangle setting, or roughly $3,564–$4,554 for a 10 × 20 ft deck. Building it yourself removes most of the labor share.
About $3,960–$5,060 installed in pressure-treated pine and $8,640–$11,040 in composite for 200 square feet with railings and one stair. The 10x20 deck page has the full material list and the cost of building it yourself.
Most new decks land between roughly $4,500 and $15,000, which works out at about $30 to $60 per square foot installed. Material is the biggest lever inside that band: pressure-treated pine sits near the bottom, cedar in the middle, composite around $48 to $70, and PVC or tropical hardwood above it. Height, shape and railing choice move the figure as much as size does.
Treat it as a sanity check on a quote rather than as a quote. It uses national average ranges and a regional adjustment, so it is good for judging whether a bid is in the right neighbourhood and for seeing which choice is actually moving your total. It cannot know your local lumber prices, how busy builders are in your area, or what a tear-off will reveal — so always get two or three written quotes and compare them line by line.
On pressure-treated pine the two are close to an even split, with labour often 40 to 45 percent. On composite and PVC the material share climbs and labour drops below half, because the boards cost several times more while the work of installing them is almost identical. That is why upgrading the decking material costs less overall than the difference in board price suggests.
Demolition of an existing deck, site work such as grading or tree removal, structural reinforcement for a hot tub, gas or electrical runs, engineering drawings where a jurisdiction requires them, and anything a tear-off reveals. On a replacement, that last item is the one most likely to grow. Add a contingency to the mid-point rather than treating the top of the range as a ceiling.
Roughly 40 to 55 percent of a contractor's price. On a 200 square foot deck that is about $1,500 to $2,500 in pressure-treated pine (materials, tool rental and permit come to roughly $2,000 to $3,300 against $4,000 to $5,100 installed) and $4,500 to $6,000 in composite, where the boards cost more but the labour saved is larger. You still pay for the permit and the inspections, and the two parts where mistakes are expensive and hidden are the footings and the ledger connection, which are also the two a first-timer is most likely to get wrong.
Replacing the boards on a sound frame typically runs $18 to $28 per square foot for pressure-treated and $30 to $42 for composite, including tear-out and disposal — about $4,300 to $10,000 on a 240 square foot deck. A full tear-down and rebuild costs the new-deck price from this calculator plus $4 to $8 per square foot for demolition and a dumpster. Price the three paths side by side in the deck replacement cost calculator.
Price the deck here, then add the roof. On a 16 by 12 ft deck an aluminium patio cover kit runs roughly $4,500 to $8,500 installed, a framed shed roof with shingles about $6,500 to $12,000 and a gable roof $8,500 to $16,000. The roof usually needs its own posts and footings, because an open deck frame is not designed for roof and snow loads.
About $15 to $35 per square foot for a standard deck with railings, based on roughly 0.35 crew labor-hours per square foot at $40 to $100 an hour. Ground-level platforms come in lower and elevated or multi-level decks higher. On a 12 by 16 ft deck that is roughly $2,900 to $6,700 of labor.
Usually a few hundred dollars: a flat application fee plus a fee based on project value, sometimes with separate inspection fees. This calculator assumes $75 plus 0.8–2% of the project value plus a $90 inspection, which is about $230 to $330 on an $8,000 deck. Your building department's published fee schedule is the authoritative figure.
Materials only — decking, framing, footings and hardware — come to about $8 to $12 per square foot for pressure-treated pine, $12 to $18 for cedar and $15 to $25 for composite. A 12 by 16 ft deck is therefore roughly $1,550 to $2,300 in pressure-treated lumber or $2,900 to $4,800 in composite before tools, the permit and railing upgrades.
Need the whole roof at once? The free roofing calculator works out roof area, squares, shingle bundles, underlayment, drip edge, ridge cap and installed cost from one set of measurements.