How Much Does It Cost to Build a Deck in 2026?

National ranges, materials + labor, pressure-treated frame · Pricing data updated 2026-07-05 · Reviewed annually

Building a deck on a standard 320 sq ft (16×20) footprint costs $6,000 to $15,500 in pressure-treated wood and $13,000 to $24,000 in composite, materials and labor combined — roughly $25–$80 per square foot installed nationwide. Because the substructure is pressure-treated lumber either way, the gap between wood and composite is almost all decking boards and railing, not the frame. The full spectrum is wide: a small ground-level pressure-treated deck can start near $2,000, while a large, elevated PVC deck with stairs in a high-cost metro can exceed $132,000.

Four decisions set most of the price: which decking material you pick, how big the deck is, whether it's raised or has stairs, and where you live. The tables below break the national ranges down along each axis, and the interactive estimator lets you combine them — then hand off to the free deck calculator for a joist, beam, post, board, and fastener take-off built from your deck's dimensions.

Deck cost by material (installed per sq ft)

The starting point for any deck budget is the decking material. These are installed rates — materials plus labor, per square foot — for a standard ground-level deck with a matching perimeter railing, before stairs, elevation, or site adjusters. The pressure-treated substructure is identical beneath every row; only the decking boards and railing change, which is why the rows spread the way they do.

These rates include a matching (wood or composite) perimeter railing. Upgrading to aluminum, cable, or glass rail is priced separately below — it's the largest hidden swing after the decking tier.

Whole-deck cost by material and size

Standard ground-level build, national averages — stairs, elevation, and demolition are separate. Each cell is a low-to-high range; real projects cluster toward the middle. Add stairs or raise the deck and the number climbs — the estimator below lets you layer those on.

Estimate your deck

Combine decking material, deck size, region, and the real-world adjusters to see your range update live. The base range is a standard ground-level deck with a matching railing — the toggles below are the conditions that ride on top, like stairs, a raised deck, or an old deck to tear out. Each shows what it adds before you commit.

What the real-world add-ons cost

Priced against a typical project — a 320 sq ft pressure-treated deck at the national average. These are the conditions and extras that ride on top of the base range. On a bigger or higher-end deck, the per-square-foot and per-post items add proportionally more.

Railing: the biggest hidden swing

Railing choice alone can move a deck bid by several thousand dollars, so it should always be its own line item — never folded into a blended per-square-foot number. The base ranges above assume a matching wood or composite railing. Priced by the linear foot, here's what each system runs installed:

On a 320 sq ft deck with roughly 50 linear feet of railing, moving from wood to cable or glass can add several thousand dollars — the reason two composite bids on the same deck can differ so much.

Cost by region

Labor is a large share of a deck build, so local rates move the whole number. High-cost metros — Seattle, the Bay Area, Boston, New York, Chicago — run 20–40% above the national average, while much of the Southeast, Midwest, and Mountain West runs 10–20% below. The same 320 sq ft deck:

Re-deck or rebuild?

If the frame, posts, ledger, and footings are rot-free and code-compliant, re-decking — replacing just the boards and often the railing on the existing structure — is far cheaper than a full rebuild. The catch is joist spacing:

Re-deck when the structure is sound and the spacing matches; rebuild when any joist, ledger, post, or footing shows rot, the deck is 15+ years old with repeated failures, or you're replacing more than about 33% of the surface. A $200–$500 structural inspection settles the question.

DIY vs. hiring a pro

Materials-only, a DIY pressure-treated deck runs about $8–$18/sq ft, because labor is 50–70% of a professional job. DIY makes the most sense for a simple, ground-level rectangular deck on flat, stable soil. Elevated decks, any engineered or permit-required design, and composite with hidden-fastener systems are where it stops paying off — a spacing or fastener error voids the warranty and creates real sag and safety risk. Ledger attachment and beam sizing are the highest-consequence tasks to leave to a pro; a failed ledger is the leading cause of deck collapse.

Permits are based on the deck's size and height, not who builds it — a deck attached to the house or more than about 30 inches above grade almost always needs a permit and footing, framing, and final inspections, DIY or not.

What these ranges don't include

National ranges, materials + labor combined, for a pressure-treated-framed deck. The base rate covers a standard ground-level deck with a matching perimeter railing; stairs, elevation, demolition of an old deck, frost-depth footings, permits, ledger flashing, and site access are priced as separate adjusters. Railing UPGRADES (aluminum, cable, glass), roofed structures, hot-tub reinforcement, regrading, deck lighting/electrical, and waterproofing over living space are excluded — see the exclusions below. These are planning ranges, never a quote; get at least three written, itemized bids from licensed local deck builders.

• Roofed structures / pergolas / covers ($3,000–$10,000+) — A roof, pergola, or cover over the deck is a separate structure and scope.
• Hot-tub structural reinforcement — Added footings and beams to carry a hot tub’s concentrated load are engineered separately.
• Landscape regrading / yard leveling ($500–$5,000) — Leveling or regrading the yard around the deck is a separate excavation scope.
• Deck lighting / electrical ($200–$1,500+) — Recessed, post-cap, or stair lighting and any wiring — basic systems $200–$700, recessed $500–$1,500+.
• Waterproofing over living space ($800–$3,000) — A deck built over a garage or living space needs a waterproof membrane assembly.
• Helical piers where soils demand ($300–$900) — Per-pier for a deck (bracket + engineering) where soils require them — NOT foundation-repair pier pricing.

Where these numbers come from

Ranges reconcile national 2026 data — the 2024 Remodeling Cost vs. Value report (Zonda/JLC), verified on jlconline.com, as the benchmark anchor, plus HomeGuide, Angi/HomeAdvisor, and Ergeon installed per-square-foot rates by material, TimberTech, Trex, and Deckorators manufacturer board tiers and joist-spacing specs, and Inch Calculator, Deck & Rail Supply, and Senmit railing rates — bracketed by roughly ±30–35% to absorb regional, elevation, and site variability. Where sources disagreed by more than 40% — almost always because a materials-only figure was compared to a full installed one — we kept the band wide rather than averaging to a false point. The pressure-treated substructure is held constant beneath every material, so the model isolates the real driver of the price gap: decking boards and railing. Every figure is rounded to the nearest $500 on purpose — a national estimate quoted to the dollar is false precision. The model is reviewed annually; this page was last computed from data updated 2026-07-05. For your own project, the only numbers that matter more than these are the ones in a written, itemized bid from a licensed local deck builder — get at least three.

Don't forget disposal in the budget

A project this size usually needs a rolloff dumpster, and rental plus overage fees are a real line item. See the right container size and what disposal typically adds to the budget.

Plan the disposal line item →