Deck Building Cost in 2026
A new deck costs $4,339–$12,653 for most homeowners in 2026, averaging $8,321 — that's $30–$60 per square foot installed. Material decides which end you land on: pressure-treated pine starts the bidding, composite finishes it, and stairs, levels and railings move the needle more than size does.
Quick answer: what it costs in 2026
| Deck construction (installed) | Low | Typical | High |
|---|---|---|---|
| Typical deck project | $4,340 | $8,320 | $12,650 |
| Per square foot installed | $30 | $45 | $60 |
| 10×10 ft deck (Angi average range) | $4,000 | $5,000 | $6,000 |
Based on Angi's 2026 deck data from 20,403 verified projects (updated September 2026). A common 16×20 ft deck (320 sq ft) at the national per-foot band runs roughly $9,600–$19,200 depending on material — see the material table.
Estimates based on published ranges from Angi, HomeAdvisor, Fixr and the Cost vs. Value Report, checked November 9, 2026. Your local price will differ — see the regional table below and our research method.
Decks are priced like flooring with engineering attached: a per-square-foot rate that bundles materials ($2–$45/sq ft depending on what you choose) and labour ($15–$35/sq ft). Angi's 2026 data — 20,403 verified projects — puts the national average build at $8,321 and the typical range at $4,339–$12,653, with the all-in per-foot cost at $30–$60.
The material decision is the budget. Pressure-treated pine is the entry point and what most of Angi's average projects are built from; cedar and redwood add natural rot resistance and looks; composite (Trex and its competitors) costs the most up front and the least thereafter — no staining, no sealing, boards warrantied for 25 years or more. What surprises people is how much of the total is not decking at all: footings, framing, stairs, railings and permits, which is why a 'cheap boards' quote can still land at the top of the range.
Height matters too. A ground-level platform is the cheapest structure in this guide; a second-storey deck with a long stair run, engineered footings and code railings is a different animal at the same square footage.
What the price normally includes
- Concrete footings, posts, beams and joists to local code
- Decking boards in the quoted material, with hidden or face fasteners as specified
- Basic railing to code where the deck height requires it
- One standard stair run on most quotes (confirm)
- Permit and inspections where required
- NOT usually included: demolition of an old deck, skirting, built-in benches/planters, lighting, pergolas, or hot-tub reinforcement (engineer it separately)
Deck cost by material (installed, per square foot)
| Material | Installed per sq ft | 320 sq ft (16×20) deck | Maintenance reality |
|---|---|---|---|
| Pressure-treated pine | $30–$50 | $9,600–$16,000 | Seal/stain every 1–2 yrs; 10–15 yr board life |
| Cedar / redwood | $35–$55 | $11,200–$17,600 | Seal regularly; 15–20 yr life |
| Composite | $40–$60 | $12,800–$19,200 | Wash only; 25+ yr warranties |
| PVC / capped polymer | $45–$65 | $14,400–$20,800 | Wash only; premium tier |
| Tropical hardwood (ipe etc.) | $45–$70+ | $14,400–$22,400+ | Oil or silver out; longest wood life |
Installed bands compiled from Angi 2026 per-square-foot data ($30–$60 overall; labour $15–$35/sq ft; materials $2–$45/sq ft) cross-checked with published material guides. The 320 sq ft totals are arithmetic on those bands — complex designs (multi-level, curved, rooftop) exceed them.
What drives the price up or down
Material tier
As the table shows, material choice alone can double the per-foot price. The honest comparison includes maintenance: pine demands sealing every year or two forever; composite's premium buys those weekends back. Over 15 years the gap narrows considerably.
Height and structure
Ground-level decks can use simpler footings and skip railings in many codes; raised decks need deeper footings, taller posts, bracing, full railings and longer stairs. Each stair run is a meaningful line item — ask for stairs priced explicitly.
Size and shape
Bigger decks cost more in total but less per foot (fixed costs spread out). Curves, angles, picture-frame borders and multi-level designs add framing and cutting labour well beyond their square footage.
Site conditions
Sloped yards, poor drainage, rocky soil and tight access all slow the structural work that dominates the early budget. A deck over a slope can need posts twice the standard length and engineered footings.
Permits and code
Most jurisdictions permit decks — footings below frost line, ledger attachment to the house, railing heights and stair geometry are all code items, and for good reason: ledger failure is the classic deck-collapse cause. A contractor who proposes skipping the permit on an attached deck is proposing to skip the inspection that checks the most dangerous joint in the structure.
Cost by region
| Region | Typical range | Why |
|---|---|---|
| South / Midwest | $28–$50/sq ft | Frost lines shallower; pine most common |
| Northeast | $35–$60/sq ft | Deep frost footings; higher labour |
| West Coast | $38–$65/sq ft | Highest labour; redwood/composite common |
| High-cost metros | Top of band + | Permitting time and labour dominate |
Regional bands compiled from published 2026 regional deck guides, framed around Angi's national $30–$60/sq ft range. Material choice moves a quote within these bands more than geography does.
Ways to keep the cost down
- Quote the deck by dimensions, height and material in writing — '16×20, 4 ft above grade, composite, one stair run, railing on three sides' makes bids comparable.
- Price pine and composite for the same design: the 15-year cost (build + sealing + board replacements) is the honest comparison, not the install price alone.
- Keep the shape simple: rectangles with a picture-frame border look designed; curves look expensive because they are.
- Ask what's included for stairs and railings in numbers — they are the most common 'extra' on deck quotes.
- Verify the permit is in the quote and the ledger will be flashed and bolted, not nailed — ask the question and watch the reaction.
- If a hot tub is even a maybe, say so now: reinforcing framing during the build is cheap; retrofitting under a finished deck is not.
Frequently asked questions
How long does it take to build a deck?
A straightforward deck typically takes one to two weeks of work once permits are in hand; permitting itself can take days to weeks depending on the jurisdiction. Complex, multi-level or composite builds run two to four weeks.
Is composite worth the extra cost?
On install price alone, composite runs roughly 30–50% more than pine. It removes staining/sealing labour, resists rot and insects, and carries 25-year-plus warranties. For owners staying a decade-plus who dislike maintenance, the lifetime maths usually works; for a short stay, pine is the rational spend.
Do I need a permit to build a deck?
In most jurisdictions, yes for attached decks and for freestanding decks above a certain size or height (commonly 30 inches). Rules vary — check your building department. Unpermitted decks surface at home-sale inspections and can be ordered removed in the worst cases.
How long will a deck last?
Pressure-treated structure (properly built) lasts decades; pine deck boards typically 10–15 years, cedar 15–20, composite 25+ under warranty. The framing usually outlives the first set of boards — plan for a re-decking rather than a rebuild.
Can I build a deck myself?
A low, freestanding platform deck is within reach of a skilled DIYer and saves the $15–$35/sq ft labour band. Attached, raised or multi-level decks involve the ledger connection, footings and railings where failures hurt people — most homeowners should hire those, or at minimum get the structure inspected.
What time of year is cheapest to build a deck?
Late autumn and winter in cold climates, when deck builders are quiet — some offer off-season pricing. Spring is peak booking season; the best builders' calendars fill by March in many markets.
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Typical: $26,950 · Range $14,600–$41,600Sources: Angi deck building cost guide (updated Sep 2026; 20,403 verified projects); published composite/wood material cost guides 2026; Cost vs. Value Report deck addition data. Full source list and methodology: How we research. Spotted a price that looks wrong in your area? Tell us — we re-check reader-flagged figures first.