Cost to Build a Deck in California (2026)
A 12×16 ft deck in California runs about $4,969 in pressure-treated pine and $10,596 in composite, installed — 16% above the US average. Here is what moves that number in California, with a calculator priced for the state.
Pressure-treated pine
$23–$30 /sq ft
Cedar
$32–$42 /sq ft
Composite
$49–$64 /sq ft
Deck cost calculator for California
Priced with California labour, material and footing-depth factors. Change any input and the estimate updates.
Estimated installed cost
$9,325 – $12,186
192 sq ft · about $55.19/sq ft
- Materials
- $6,605
- Labour
- $3,991
- Footings (18 in deep)
- 3 × about $148
- Frost-depth adjustment
- −$58
Mid-range estimate for a rectangular deck attached to the house, with one beam line per 12 ft of depth and footings every 8 ft. Excludes demolition, permits and site work. For railing, stairs and a full line-item breakdown use the main deck cost calculator.
California deck cost by size and material
Mid-range installed prices for a standard-height deck attached to the house, including framing, footings at the local depth and hardware. Railing and stairs are priced separately in the main deck cost calculator.
| Deck size | Pressure-treated pine | Cedar | Composite |
|---|---|---|---|
| 10 × 10 ft (100 sq ft) | $2,560 | $3,591 | $5,491 |
| 12 × 12 ft (144 sq ft) | $3,712 | $5,197 | $7,933 |
| 12 × 16 ft (192 sq ft) | $4,969 | $6,948 | $10,596 |
| 16 × 20 ft (320 sq ft) | $8,224 | $11,523 | $17,603 |
| 20 × 20 ft (400 sq ft) | $10,318 | $14,442 | $22,042 |
What drives deck prices in California
Labour
Labour is the biggest regional variable. Carpentry labour in California runs 28% above the national level, so a composite 12×16 that averages $9,216 nationally comes to about $10,596 here. On pressure-treated decks labour is more than half the bill, so the regional gap is widest on the cheapest material.
Climate
Mostly mild, but wildfire risk shapes material choice across much of the state, and coastal fog keeps wood damp. Frost only matters in the Sierra and far north.
Footings and frost depth
Footings in California typically go 12–24 inches deep. At 18 inches each 12 inch footing costs roughly $148 installed, and a 12×16 deck needs about 3 of them — a saving of $58 against the 24 inch depth national prices assume.
Which decking makes sense here
Our pick for most California homes: composite. Fire-rated composite or PVC is often the only practical choice in WUI zones, and redwood and cedar lose their price edge once code-compliant options are compared. Composite adds about $5,627 to a 12×16 deck over pressure-treated — see the full 20-year comparison in the composite vs wood calculator.
Permits and code in California
The California Residential Code applies statewide. In designated wildfire (WUI) zones, Chapter 7A requires ignition-resistant or noncombustible decking, which rules out many ordinary wood and composite boards. Permits and plan review cost more here than in almost any other state.
Typical deck permit fees: $300–$1,200. Expect a footing inspection before concrete, a framing inspection before the decking goes down and a final. Estimate your fee with the deck permit cost calculator, and read our deck permit guide for what the drawings need to show.
Best time to build a deck in California
Year-round on the coast; April to October in the mountains.
Deck cost in California cities
- Los Angeles — 12×16 composite about $10,896
- San Diego — 12×16 composite about $10,763
- San Jose — 12×16 composite about $11,618
- Sacramento — 12×16 composite about $10,314
Compare neighbouring states
Frequently asked questions
How much does it cost to build a deck in California?
A typical 12×16 ft (192 sq ft) deck in California costs about $4,969 installed in pressure-treated pine, $6,948 in cedar and $10,596 in composite. That is $23–$30 per square foot for pressure-treated and $49–$64 for composite — 16% above the US average.
Is a composite deck worth it in California?
On a 12×16 deck composite costs about $5,627 more than pressure-treated up front. Fire-rated composite or PVC is often the only practical choice in WUI zones, and redwood and cedar lose their price edge once code-compliant options are compared. Composite needs no staining, which saves a refinishing cycle every two to three years on wood.
Do I need a permit to build a deck in California?
The California Residential Code applies statewide. In designated wildfire (WUI) zones, Chapter 7A requires ignition-resistant or noncombustible decking, which rules out many ordinary wood and composite boards. Permits and plan review cost more here than in almost any other state. Where a permit is required, fees typically run $300–$1,200. Under the model residential code, a freestanding deck under 200 sq ft and no more than 30 inches above grade that does not serve an exit door is often exempt — attaching it to the house removes that exemption.
How deep do deck footings need to be in California?
Typically 12 to 24 inches depending on the part of the state. At about 18 inches, each 12 inch footing costs roughly $148 installed, compared with $167 at a 24 inch depth. Confirm the exact depth with your building department before digging.
When is the best time to build a deck in California?
Year-round on the coast; April to October in the mountains. Booking a builder outside the spring rush often gets a faster start date and a keener price.
Is California expensive for deck building compared with other states?
California ranks 46 of 50 from cheapest to most expensive on our index. Carpentry labour runs 28% above the national level and materials 8% above it, which puts a typical deck 16% above the US average.
Price the rest of the project
How these figures are made: national installed prices per square foot, split into materials and labour and adjusted by a California labour index (reasoned from BLS state carpenter wage data), a material and freight index, and the local footing depth. They are planning estimates — get two or three itemised local quotes. Method.