How much does a deck construction cost?
What it costs to build a deck in 2026 by material and per square foot, plus what drives the total.
A typical deck construction runs $5,000–$15,000, or about $30–$60 / sq ft. The national average is around $9,500. Your final price depends most on the size of the project, the materials you choose, and local labor rates.
A deck adds usable outdoor living space, priced by the square foot and material. New deck construction typically costs $5,000–$15,000, averaging around $9,500, or roughly $30–$60 per square foot including framing and labor.
Cost breakdown
What drives the cost
Larger and elevated decks need more material and framing, plus railings and stairs.
Pressure-treated is cheapest; composite costs more upfront but needs almost no maintenance.
Railings, stairs, built-in benches, and multiple levels each add material and labor.
Most decks need a permit and proper footings; frost-depth and soil affect the foundation.
Cost by region
Common mistakes to avoid
Unpermitted decks can fail inspection at resale and may be unsafe. Pull the permit.
The ledger board and footings carry the deck. Poor attachment is a leading cause of collapses.
Wood needs regular sealing; composite costs more upfront but saves years of upkeep.
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Frequently asked questions
Most decks cost $5,000–$15,000, averaging about $9,500, or $30–$60 per square foot including framing and labor.
Composite costs more upfront but resists rot and fading and needs little maintenance, often paying off over time.
Usually yes, especially for attached or elevated decks. A permit ensures safe footings and ledger attachment.
A standard deck takes about 1–2 weeks depending on size, height, materials, and inspections.
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