Quick Answer: A new deck usually costs $20 to $60 per square foot in 2026, with a typical 12x16 deck landing around $6,000 to $14,000. Pressure-treated lumber stays cheaper, while composite boards, upgraded railings, stairs, lighting, and permit requirements raise the final price quickly.
How much does a deck cost?
| Deck Type | Typical Cost | Notes |
|---|---|---|
| Pressure-treated wood | $20-$35/sq ft | Lower upfront price and common for standard backyard decks |
| Composite decking | $35-$60/sq ft | Higher material cost but lower maintenance over time |
| Typical 12x16 deck | $6,000-$14,000 | Average installed range before major upgrades or complex elevations |
Deck pricing starts with square footage, but the real total depends on structure and site conditions. A ground-level rectangle is usually far cheaper than a raised deck with stairs, multiple landings, picture framing, lighting, and decorative rail systems.
Cost Breakdown by Material and Size
- Pressure-treated wood offers the most affordable entry point for a standard residential deck build.
- Composite boards cost more upfront but can reduce staining, sealing, and long-term upkeep.
- Railings, stairs, skirting, benches, and lighting can materially change the final installed total.
- Footings, excavation, and difficult access increase labor even when the deck itself is not large.
- Permit costs and code upgrades matter more for elevated decks than simple platform builds.
What Affects Deck Cost?
Material choice is the first big cost driver, but it is not the only one. Height off the ground, number of stairs, railing style, and structural engineering requirements can change labor and framing needs quickly. Site accessibility matters too: hauling materials through a tight yard or working on a sloped lot often increases build time. Local codes can require specific footings, guardrails, or hardware, and those compliance details show up in the estimate. If you want built-in seating, pergolas, or under-deck drainage, expect the project to move toward the upper end of the range.
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View on Amazon →When comparing deck quotes, ask whether staining, demolition of an old deck, permit fees, and final cleanup are included. Those extras are common reasons a low initial quote becomes a much more expensive project later.
Free Deck Calculator →Is composite decking worth the extra money?
Composite decking costs more upfront, but many homeowners choose it for lower maintenance and longer-lasting appearance. If you want to reduce staining and sealing work, composite can be worth the premium.
Do I need a permit to build a deck?
Many jurisdictions require a permit, especially for elevated decks, stairs, and structures attached to the house. Permit rules vary, so check local code before finalizing your budget.
What size deck is most common?
A common starter size is around 12x16 feet because it fits many patios and backyard seating areas without becoming a major structural project. Larger entertaining decks cost more due to framing, railings, and stairs.
Is a deck cheaper than a patio?
Often, a basic patio can cost less than a raised deck, but site conditions matter. If excavation, drainage, or retaining work is needed, the price gap can narrow.
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