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

A new deck is one of the best home improvements for resale value, returning 60–80% of your investment. But costs vary widely depending on size, material, and whether you DIY or hire a pro. Use our deck calculator to estimate boards, joists, and screws, then read this guide for the full cost picture.

Average Deck Costs by Size

Deck Size	Sq Ft	Wood (DIY)	Wood (Pro)	Composite (DIY)	Composite (Pro)
10×10	100	$700–$1,200	$1,800–$3,000	$1,100–$1,800	$2,500–$4,000
12×12	144	$1,000–$1,700	$2,500–$4,200	$1,500–$2,400	$3,500–$5,500
12×16	192	$1,300–$2,200	$3,200–$5,500	$2,000–$3,200	$4,500–$7,000
16×16	256	$1,700–$2,800	$4,200–$7,000	$2,600–$4,200	$5,800–$9,000
16×20	320	$2,100–$3,500	$5,200–$8,500	$3,200–$5,200	$7,000–$11,000

These estimates include materials, footing, framing, decking, and basic railing. Stairs, built-in seating, lighting, and pergolas add extra.

Material Cost Comparison

Material	$/sq ft (decking only)	Lifespan	Annual Maintenance	Best For
Pressure-treated pine	$2–$3	10–15 yrs	Seal/stain yearly	Budget, framing
Cedar	$3–$5	15–20 yrs	Every 2–3 yrs	Natural look, insect resistance
Redwood	$4–$7	15–25 yrs	Every 2–3 yrs	Premium natural appearance
Composite (WPC)	$4–$8	25–30 yrs	Soap wash yearly	Low-maintenance, no splinters
PVC / vinyl	$5–$10	25–30 yrs	None	Maximum durability
Aluminum	$8–$15	30+ yrs	None	Waterfront, commercial

Composite decking costs roughly twice as much as pressure-treated wood upfront, but it eliminates annual staining and lasts 2–3 times longer. Over a 25-year lifespan, composite often costs less total when you factor in maintenance materials and labor.

Full Cost Breakdown (12×16 Deck)

Here is where the money goes for a typical 12×16 ft (192 sq ft) deck:

Component	Wood Deck	Composite Deck	Notes
Decking boards	$400–$600	$800–$1,600	~28 boards (16 ft)
Framing (joists, beams, posts)	$300–$500	$300–$500	2×8 joists, 6×6 posts
Concrete footings	$100–$200	$100–$200	6–8 holes below frost line
Hardware	$150–$250	$200–$400	Screws, brackets, flashing
Railings	$200–$500	$400–$1,000	Required if >30" high
Stairs (if needed)	$100–$200	$150–$300	Stringers, treads, handrail
Total materials	$1,250–$2,250	$1,950–$4,000
Professional labor	$1,500–$3,000	$2,000–$4,000	~$8–$15/sq ft
Total installed	$2,750–$5,250	$3,950–$8,000

Hidden Costs to Budget For

Permit fees: $50–$300 depending on your municipality. Required for decks over 12–30" above grade.
Site preparation: Removing an old deck ($300–$800), grading, or landscaping adds cost.
Stairs and landings: A set of 4–6 stairs adds $200–$600 in materials. Multi-level decks need landings.
Built-in features: Benches ($150–$400 each), planters ($100–$300), and pergolas ($1,000–$5,000) are extras.
Lighting and electrical: Post caps, stair lights, and outlets add $200–$1,000+ if an electrician is needed.
Maintenance (wood): Staining/sealing every 1–3 years costs $100–$300 in materials or $300–$700 professionally.

DIY vs Professional: Which Saves More?

DIY saves $1,500–$4,000 in labor on a typical deck, but requires tools, time, and confidence. A basic 12×16 wood deck takes a weekend for an experienced DIYer with a helper. Consider hiring a pro if:

The deck is more than 30" above ground (safety-critical framing)
You need complex angles, multi-levels, or curved edges
You lack tools (circular saw, drill, level, post hole digger)
Local code requires engineered drawings or inspections

Even if you hire out, you can save by doing demolition, site prep, and painting/staining yourself.

ROI: Is a Deck Worth It?

According to Remodeling Magazine's Cost vs. Value report, a wood deck addition recovers ~65% of cost at resale, while a composite deck recovers ~60%. A deck also expands your living space and makes your home more attractive to buyers. The best ROI comes from moderate-size decks (150–250 sq ft) in good condition.

FAQ

How much does a 12×16 deck cost?

A 12×16 wood deck costs $2,750–$5,250 installed, or $1,250–$2,250 for DIY materials. Composite costs $3,950–$8,000 installed or $1,950–$4,000 for materials.

Is composite decking worth the extra cost?

Composite costs ~2x upfront but lasts 25–30 years with no staining or sealing. If you plan to stay in your home 10+ years, composite usually costs less over time. If you sell within 5 years, wood may be the better value.

Do I need a permit to build a deck?

Most jurisdictions require a permit for decks over 12–30 inches above grade, or any deck attached to the house. Permit fees are $50–$300. Unpermitted decks can fail home inspections.

How long does it take to build a deck?

A DIY 12×16 deck takes 2–3 days (day 1: footings and posts; day 2: framing; day 3: decking and railing). Professional installation takes 1–3 days for a simple deck.