Typical deck costs in California (2026)
Estimated cost (complete deck, installed) for common projects in California, next to the US average. Change any option in the calculator above to price your exact project.
| Project | California range | California typical | US typical |
|---|---|---|---|
| 12×12 ft pressure-treated | $6,039 – $10,673 | $8,356 | $6,849 |
| 16×12 ft pressure-treated | $7,869 – $13,864 | $10,867 | $8,907 |
| 16×12 ft composite | $14,018 – $24,034 | $19,026 | $15,595 |
| 20×16 ft composite | $21,777 – $37,088 | $29,433 | $24,125 |
What changes the price in California
California's climate: mostly mild and dry, with hot inland valleys and snow only in the mountains. These local factors matter most for deck projects:
- Fire zones limit decking choices. In high fire-hazard areas, California's Chapter 7A requires ignition-resistant or noncombustible decking — many composites are listed, but check the product.
- Most attached decks need a permit. Under the IRC, only small, low, freestanding decks (under 200 sq ft, under 30 in high and not serving an exit door) skip it.
Labor, sales tax and permits in California
- Labor and prices: California's construction cost index is 1.22 — 22% above the US average, the 3rd highest of the 50 states and DC. Prices in big metros (Los Angeles, San Diego, San Jose) usually run above the state average, and rural areas below it.
- Sales tax: 7.25% statewide base rate, with local district taxes taking most areas to 8–10.75%. The estimates on this page don't include it.
- Building rules: California follows the California Residential Code (part of Title 24). Permits and inspections are handled by your city or county, so confirm requirements with your local building department before you start.
California vs. other large states
16×12 ft pressure-treated deck with 40 ft of railing and 3 steps — typical cost in the 10 most populous states:
| State | Typical cost | vs. US avg |
|---|---|---|
| North Carolina | $7,927 | -11% |
| Georgia | $8,105 | -9% |
| Texas | $8,194 | -8% |
| Florida | $8,462 | -5% |
| Ohio | $8,640 | -3% |
| Michigan | $8,907 | — |
| Pennsylvania | $9,174 | +3% |
| Illinois | $9,798 | +10% |
| New York | $10,688 | +20% |
| California | $10,867 | +22% |
See all 50 states on the main deck cost calculator.
Frequently asked questions
How much does a new deck cost in California?
16×12 ft pressure-treated deck with 40 ft of railing and 3 steps costs about $7,869–$13,864 in California (typical $10,867), compared with $8,907 at the US average. Your exact price depends on size, materials and your contractor — use the calculator above for your own numbers.
How deep do deck footings need to be in California?
Footings must go below the frost line — little or none in most coastal and valley areas; 12–30 in or more in mountain areas such as the Sierra Nevada. Your local building department sets the exact depth for your address.
Is a new deck cheaper in California than in other states?
California's construction cost index is 1.22, 22% above the US average and the 3rd highest of the 50 states and DC. Among the 10 most populous states, California ranks 10th cheapest for this project.
Does the estimate include sales tax?
No. Sales tax on materials in California is 7.25% statewide base rate, with local district taxes taking most areas to 8–10.75%. Contractors usually build it into their quotes, so compare quotes on the same basis.