How Much Does It Cost to Build a Wood Deck in 2026?
A wood deck costs $30 to $60 per square foot installed in 2026 — except when you build it yourself, which drops materials-only costs to $10–$27 per square foot. Skipping this DIY-vs-pro math is the single biggest cause of blown deck budgets. This guide breaks down size-based pricing, labor costs, material comparisons, and the resale value a deck actually adds.
Wood Deck Cost by Size (2026)
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Total cost scales with both square footage and material tier. The table below breaks down real 2026 pricing for three common deck sizes across budget, mid-range, and premium material choices — see our full wood decking guides for material-specific deep dives.
| Deck Size | Budget (Pressure-Treated) | Mid-Range (Cedar/Redwood) | Premium (Composite) |
|---|---|---|---|
| 10×10 (100 sq ft) | $2,000–$4,000 | $3,500–$5,500 | $4,500–$7,000 |
| 12×12 (144 sq ft) | $3,600–$5,800 | $5,000–$7,900 | $6,500–$9,400 |
| 20×20 (400 sq ft) | $12,000–$16,000 | $16,000–$22,000 | $20,000–$28,000 |
📊 A 20×20 deck can run $12,000 to $28,000 — the footprint never changes, but material tier alone creates a $16,000 swing. Source: Compiled 2026 contractor cost data
What Factors Influence Deck Cost?
Four variables drive most of the swing between a $4,000 deck and a $25,000 deck: material choice, square footage, framing hardware, and site conditions.
- Material: Pressure-treated pine costs roughly half as much installed as composite or exotic hardwood.
- Size: Cost scales close to linearly with square footage — a 20×20 deck costs about 4x a 10×10 deck of the same material.
- Height and structure: Multi-level decks, built-in seating, and second-story decks add footings, framing, and labor hours a simple ground-level deck doesn’t need.
- Site conditions: An unlevel yard, tree roots, or difficult access can add 10–20% to labor costs before a single board goes down.
Wood Types and Prices
Material choice is the single biggest lever on total cost. Pressure-treated lumber remains the cheapest structural option at $25–$50 per square foot installed, while cedar, redwood, and exotic hardwoods roughly double that. Deciding between wood and manufactured boards? See our full composite vs. pressure-treated comparison for the resale and maintenance tradeoffs.
| Wood Type | Installed Cost per Sq Ft | Best For |
|---|---|---|
| Pressure-treated pine | $25–$50 | Budget builds, painted or solid-stained decks |
| Cedar | $30–$47 | Natural look with moderate rot resistance |
| Redwood | $28–$54 | Rich color, good weather resistance |
| Ipe / exotic hardwood | $50–$70 | Maximum durability and a premium finish |
Board dimensions matter for your estimate too — actual lumber sizes run smaller than their nominal name (a “5/4” deck board isn’t really 1.25″ thick). See our 5/4 deck board actual size guide before you calculate your own board count.
Professional vs. DIY Cost Breakdown
Professional installation runs $25 to $80 per square foot depending on material and site complexity, with labor typically covering 50–70% of that total. Building it yourself cuts the same job to roughly $10 to $27 per square foot in materials, saving 50–60% versus paying for labor.
That savings comes with real requirements: framing to local code, correctly sized footings, and 3–5 weekends of work for an average-size deck. A miscut ledger board or an undersized footing costs more to fix after the fact than a professional would have charged to prevent it in the first place.
Does a Wood Deck Increase Home Value?
Yes. A wood deck addition recoups about 94.9% of its cost at resale on a national-average project cost of $18,263 for a 16×20 deck — one of the strongest returns of any home improvement project. Composite deck additions cost more upfront ($25,096 average) but recoup a lower 88.5%.
📊 Wood deck additions recoup 94.9% of their cost at resale, ranking among the top 10 home improvement projects for ROI. Source: 2025 Cost vs. Value Report
“The homeowners who blow their deck budget almost always skipped the same line item: the permit. A $50–$250 fee is easy to forget about until an inspector requires you to open up framing you already covered.”
Additional Costs to Consider
Beyond materials and labor, budget for permits, site preparation, and any custom features. Permits typically run $50 to $250 depending on your municipality, and some cities require an inspection at the framing stage and again at completion.
- Site preparation: An unlevel yard, tree roots, or poor drainage can add several hundred dollars before framing even starts.
- Custom features: Built-in seating, multi-level platforms, or a pergola addition add both materials and labor hours beyond a simple rectangular deck.
- Railings and stairs: Code-required railings above 30″ typically add $20–$50 per linear foot; stairs run $500–$2,000 depending on height and material.
- Deck accessories: Lighting, privacy screens, and other deck accessories are optional but add up fast if you want them from day one.
Long-Term Deck Maintenance Costs
Wood decks need more upkeep than composite, and skipping it shortens the deck’s life. Budget $1.50 to $4.50 per square foot every 2 to 3 years for cleaning and resealing — for a 300 sq ft deck, that’s roughly $450 to $1,350 per cycle.
- Clean and reseal the deck surface every 2–3 years to prevent moisture damage.
- Inspect for rot, mold, or pest damage each spring, especially around ledger boards and posts set in soil.
- Replace a damaged or soft board immediately — it’s a structural warning sign, not just a cosmetic one.
See our full guide on sealing a pressure-treated deck for step-by-step timing and product recommendations.
How to Budget for a Wood Deck Build
Follow these five steps in order to avoid the most common budgeting mistakes before you buy a single board.
- Pick your material tier first: Decide between pressure-treated, cedar/redwood, or composite before pricing anything else — material choice alone swings total cost by 2–3x.
- Decide DIY vs. professional labor: Compare the $25–$80 per sq ft professional rate against $10–$27 per sq ft in DIY materials, and be honest about your skill level and available weekends.
- Price permits and site prep upfront: Add $50–$250 for a permit plus any grading or tree removal your site needs, before you finalize a materials budget.
- Build in a 10–15% contingency: Lumber price swings and site surprises like buried utilities or soft soil are the most common source of mid-project overages.
- Get at least three contractor quotes: A written local quote is the only reliable number — national averages can be off by thousands of dollars for your specific region.
Frequently Asked Questions
How much does it cost to build a 20×20 wood deck?
A 20×20 deck (400 sq ft) costs $12,000 to $16,000 in pressure-treated lumber, $16,000 to $22,000 in cedar or redwood, or $20,000 to $28,000 in composite, based on 2026 material pricing. Size stays constant — material tier is what drives the range.
How much does a 12×12 deck cost?
A 12×12 deck (144 sq ft) runs $3,600 to $5,800 in pressure-treated pine, $5,000 to $7,900 in cedar or redwood, or $6,500 to $9,400 in composite, depending on labor rates in your area.
Is it cheaper to build a deck yourself?
Yes — DIY materials run $10 to $27 per square foot versus $25 to $80 per square foot professionally installed, a 50–60% labor savings. That’s only a real savings if you frame to code correctly; a failed inspection or a redo costs more than hiring it out the first time.
Does a wood deck increase home value?
Yes. Wood deck additions recoup about 94.9% of their cost at resale on average, per the 2025 Cost vs. Value Report — one of the highest returns of any home improvement project, ahead of most kitchen and bathroom remodels.
What is the cheapest decking material?
Pressure-treated pine is the cheapest structural decking material, at $25 to $50 per square foot installed — roughly half the cost of composite or exotic hardwood for the same footprint.
How much does deck maintenance cost per year?
Budget $1.50 to $4.50 per square foot every 2 to 3 years for cleaning and resealing a wood deck — roughly $150 to $450 per year averaged out for a mid-size deck. Composite decking skips this cost entirely but costs more to install upfront.
Conclusion
A wood deck’s real cost depends far more on material tier and DIY-vs-pro labor than on any single line item most homeowners worry about first. Use the size table above to set a realistic range, then run your own numbers through our deck cost calculator before requesting contractor quotes.
