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Cost to Build a Deck in 2026

U.S. planning allowances in USD by size and material, plus the site factors that can move a local quote beyond the range. Render the deck before you spend hours on a quote.

By Monty, Founder, PaperPlan · Updated September 9, 2026

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Contractor proposal with deck cost estimate next to a photorealistic deck render

Why this page exists

Installed cost, not just lumber

Ranges include materials and contractor labor, so you’re not surprised when the bid lands.

See the upgrade visually

Show the homeowner what an extra $4,000 in composite actually buys before they default to the cheapest option.

Catch budget killers early

Stairs, railing, raised builds, and demolition are where deck costs blow up. Quote those items separately from the base platform.

Generate a render before quoting

Stop driving out for tire-kickers. A render filters serious buyers from people who just want a number.

How it works

  1. Upload a backyard photo. Use any phone photo of the build site. No measurements, no CAD file.
  2. Mark the deck area. Drag to outline where the deck goes. Add stairs or a railing line if you want them.
  3. Choose material and design. Pick composite, PVC, cedar, or pressure-treated. Compare looks on the same photo.
  4. Generate the render and share. Get a photorealistic render in seconds. Send it to the homeowner or attach it to a proposal.

Cost to Build a Deck in 2026

PaperPlan uses editorial allowances of $25–$90 per square foot in USD across the three material classes below. The table covers a simple deck platform with ordinary materials and labor; it does not quote all features of a finished project. See the assumptions and primary sources below.

Deck sizePressure-treatedCompositePVC
10×10 ft (100 sq ft)$2,500 – $4,000$4,500 – $7,000$6,000 – $9,000
12×16 ft (192 sq ft)$4,800 – $7,700$8,600 – $13,400$11,500 – $17,300
16×20 ft (320 sq ft)$8,000 – $12,800$14,400 – $22,400$19,200 – $28,800
20×24 ft (480 sq ft)$12,000 – $19,200$21,600 – $33,600$28,800 – $43,200

What moves the price

  • Pressure-treated pine. $25 – $40 / sq ft: the lowest starting allowance in this model. Obtain local material and labor prices.
  • Composite (Trex, Fiberon, TimberTech PRO). $45 – $70 / sq ft: an allowance for a composite platform, with product and labor costs to verify locally.
  • PVC / capped polymer (AZEK, TimberTech AZEK). $60 – $90 / sq ft: a separate PVC allowance. Product collection and local installation costs vary.
  • Raised deck (>3 ft). Get a separate structural and installation quote for the actual height, foundation conditions, stairs and railing.
  • Stairs. Price the measured rise, run, width, landings and required railing separately.
  • Demolition of an old deck. Ask for removal and disposal as an explicit line item; condition and access affect the price.
  • Premium railing (cable, glass, aluminum). All railing is outside the platform allowance. Quote the chosen system by its measured length, corners and posts.
  • Permits and engineering. Check fees and required drawings with your local authority and design professional.

Cost assumptions and sources

U.S. planning allowances in USD for a simple, single-level deck, including ordinary materials and contractor labor. These are PaperPlan editorial assumptions, not surveyed averages or a local quote.

  • Pressure-treated: $25 – $40 / sq ft installed (USD)
  • Composite: $45 – $70 / sq ft installed (USD)
  • PVC: $60 – $90 / sq ft installed (USD)

Multiply deck area (width × length in feet) by the selected installed rate, then round each end of the range to the nearest $100.

Demolition, permits and engineering, taxes, stairs, railing, roofs, unusual foundations and difficult site access need separate quotes. Location, product selection and labor can put a real bid outside these ranges. Canadian projects need local CAD pricing.

The manufacturer sources below explain scope and cost drivers; they do not validate PaperPlan’s exact installed-rate bands. Supplier material estimates should not be compared directly with an installed project budget.

Sources and assumptions reviewed . Confirm the scope and current price with local contractors before budgeting a build.

Common questions

How much does it cost to build a 12x16 deck?

Roughly $4,800–$7,700 in pressure-treated pine, $8,600–$13,400 in composite, and $11,500–$17,300 in PVC, installed. These are U.S. platform allowances in USD; stairs, railing, covers and elevated framing need separate quotes.

Is it cheaper to build a deck or a patio?

A ground-level concrete or paver patio usually costs less per square foot than a wood deck, but a deck wins on raised lots, sloped yards, or anywhere you need a level surface above grade.

How much does labor cost to build a deck?

Labor varies by location, site and scope. Trex’s calculator excludes labor, while TimberTech’s cost guide separates labor and substructure from decking. Ask contractors to identify those items rather than treating a supplier materials estimate as an installed quote.

Why do contractors quote so differently?

They’re estimating from different assumptions. PaperPlan lets contractors render the finished deck on the actual yard, which makes the scope concrete and the bids comparable.

Keep researching

  • Deck Cost Calculator: Use our deck cost calculator to estimate the price of a new deck by size and material. Compare pressure-treated, composite, and PVC, then visualize the deck on your own backyard photo.
  • 10×10 Deck Cost: A 10x10 deck costs $2,500 – $4,000 installed in pressure-treated pine or $4,500 – $7,000 in composite. See the material quantities behind the number, what fits on 100 sq ft, and render it on your own yard.
  • 12×16 Deck Cost: A 12x16 deck costs $4,800 – $7,700 installed in pressure-treated pine or $8,600 – $13,400 in composite. Why it’s the size contractors quote most, the full material breakdown, and a render on your yard.
  • 20×20 Deck Cost: A 20x20 deck costs $10,000 – $16,000 installed in pressure-treated pine or $18,000 – $28,000 in composite. Full pricing for 400 sq ft, multi-zone layout guidance, and a render on your own backyard photo.
  • Composite vs Wood Deck: Compare composite and wood deck planning costs, maintenance needs and ownership trade-offs, then visualize both materials on your own backyard photo.
  • Deck Material Calculator: Estimate boards, joists, fasteners, and railing for any deck size with our deck material calculator. Pair the estimate with a photorealistic render of the finished build.

All deck planning guides