Cost guide
How Much Does a Deck Cost?
Material choice is the biggest lever: a composite deck can cost double a pressure-treated one. Here are the typical US ranges for wood vs. composite, installed vs. DIY, plus what pushes any quote up or down.
By HowMuchBuild Editorial TeamCalculation reviewedUpdated October 2026
Quick answer: typical deck cost ranges
| Deck type | Typical range (per sq ft, installed) |
|---|---|
| Pressure-treated wood | $15–$35 |
| Composite / PVC | $30–$60 |
| DIY materials, wood | $8–$15 |
| DIY materials, composite | $15–$30 |
A classic 12×16 ft deck (192 sq ft) therefore runs roughly $2,900–$6,700 in wood or $5,800–$11,500 in composite, installed. DIY cuts those figures roughly in half — but a deck is structural work, so be honest about your skill level before skipping the pro.
What drives the price
- Decking material. The single biggest lever — composite boards cost 2–3× pressure-treated lumber per board.
- Height. Elevated decks need taller posts, deeper footings, railings, and stairs. A ground-level platform skips most of that.
- Railings and stairs. Railing is surprisingly expensive per linear foot — cable, composite, or metal railings can rival the decking cost. Every stair flight adds framing and labor.
- Footings. Concrete piers below the frost line are non-negotiable in cold climates, and rocky or sloped sites make digging slow.
- Shape and extras. Rectangles are cheap; curves, multi-levels, built-in benches, and lighting are not.
- Permits and inspections. Usually a few hundred dollars — budget for them rather than skipping them.
Worked example: 12×16 ft wood deck
- Area: 12 × 16 = 192 sq ft.
- Materials takeoff: run your dimensions through our deck calculator for boards, joists, posts, footings, and screws.
- DIY materials: 192 × $8–$15 = $1,540–$2,880.
- Pro installed: 192 × $15–$35 = $2,880–$6,720 — before railings and stairs, which are often quoted separately.
Wood vs. composite: lifetime math
Pressure-treated wood needs staining or sealing every 2–3 years — figure a weekend and a few hundred dollars each cycle (guidance). Composite needs little more than washing. Over 15–20 years, the maintenance savings narrow the upfront gap considerably, and composite's fade/stain warranties add peace of mind. If you love the look and feel of real wood and don't mind the upkeep, wood remains the value choice.
Frequently asked questions
How much does a 12×16 deck cost?
As a typical range: a 192 sq ft pressure-treated wood deck runs $2,900–$6,700 installed ($15–$35/sq ft); the same deck in composite runs $5,800–$11,500 ($30–$60/sq ft). Railings, stairs, and height move you within — or beyond — those bands. Prices vary widely by region and site conditions.
Is composite decking worth the extra cost?
It depends on your horizon (guidance). Composite costs roughly double up front but needs no staining or sealing and resists rot and insects. If you'll keep the deck 15+ years and dislike maintenance, the lifetime math often favors composite; for a budget build or a short stay, pressure-treated wood wins.
What is the cheapest way to build a deck?
Build it yourself with pressure-treated lumber, keep it low to the ground (shorter posts, simpler footings, possibly no railing required by code), use a simple rectangular shape, and skip built-ins like benches and planters (guidance). DIY typically cuts the installed price roughly in half.
Do I need a permit for a deck?
Usually yes if it's attached to the house or above a certain height (often 30 inches, but it varies). Permits add a few hundred dollars and an inspection or two, but unpermitted decks cause real problems at resale and with insurance. Check your local building department early.
Why are deck quotes so different from each other?
Footings, railings, and stairs are the swing factors. A ground-level platform with no railing is a fundamentally cheaper structure than an elevated deck with stairs, railings, and concrete piers — make sure quotes describe the same structure before comparing them.