Cost to Build a Deck in San Jose, CA (2026)
In San Jose a 12×16 ft deck costs about $5,567 in pressure-treated pine and $11,618 in composite, installed — 29% above the US average. Below: local prices by size, footing depth, permits and a calculator priced for San Jose.
Pressure-treated pine
$26–$34 /sq ft
Cedar
$36–$47 /sq ft
Composite
$54–$70 /sq ft
Deck cost calculator for San Jose
Priced with San Jose labour, material and footing-depth factors. Change any input and the estimate updates.
Estimated installed cost
$10,224 – $13,361
192 sq ft · about $60.51/sq ft
- Materials
- $7,275
- Labour
- $4,343
- Footings (12 in deep)
- 3 × about $128
- Frost-depth adjustment
- −$115
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.
San Jose deck cost by size and material
Mid-range installed prices for a standard-height deck attached to the house, with footings at 12 inches. Add railing and stairs in the deck cost calculator.
| Deck size | Pressure-treated pine | Cedar | Composite |
|---|---|---|---|
| 10 × 10 ft (100 sq ft) | $2,844 | $3,956 | $5,996 |
| 12 × 12 ft (144 sq ft) | $4,146 | $5,747 | $8,685 |
| 12 × 16 ft (192 sq ft) | $5,567 | $7,701 | $11,618 |
| 16 × 20 ft (320 sq ft) | $9,163 | $12,720 | $19,248 |
| 20 × 20 ft (400 sq ft) | $11,531 | $15,977 | $24,137 |
What makes a deck in San Jose cost what it does
Some of the highest construction labour costs in the country; hillside lots in the foothills.
Labour here runs 20% above the California average, so a pressure-treated 12×16 that averages $4,969 across California comes to about $5,567 in San Jose. 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
Footings in San Jose go about 12 inches deep, which costs roughly $128 per 12 inch footing installed. A 12×16 deck needs about 3. Size them with the deck footing calculator.
Deck permits in San Jose
Permits are issued by the City of San Jose Building Division. Permits are required for most decks attached to the house or over 30 inches; hillside and fire-zone lots add review. Typical fees run $400–$1,200. For the state rules that sit behind the local ones, see deck cost in California.
Choosing decking in San Jose
Composite adds about $6,051 to a 12×16 deck here over pressure-treated. 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. Run the numbers for your deck in the composite vs wood calculator.
Best time to build
Year-round on the coast; April to October in the mountains.
Other California cities
- Los Angeles — 12×16 composite about $10,896
- San Diego — 12×16 composite about $10,763
- Sacramento — 12×16 composite about $10,314
Frequently asked questions
How much does a deck cost in San Jose?
A 12×16 ft deck in San Jose costs about $5,567 in pressure-treated pine, $7,701 in cedar and $11,618 in composite, installed. That is $26–$34 per square foot for pressure-treated and $54–$70 for composite.
Is building a deck in San Jose more expensive than elsewhere in California?
A typical deck in San Jose runs 10% above the California average and 29% above the US average, mainly because of local labour rates. Some of the highest construction labour costs in the country; hillside lots in the foothills.
Do I need a permit for a deck in San Jose?
Permits are issued by the City of San Jose Building Division. Permits are required for most decks attached to the house or over 30 inches; hillside and fire-zone lots add review. Budget roughly $400–$1,200 for the permit, more if drawings by a design professional are required.
How deep do deck footings have to be in San Jose?
About 12 inches. Each 12 inch footing at that depth costs roughly $128 installed, and a 12×16 deck needs about 3. Always confirm the required depth with the City of San Jose Building Division before digging — the footing inspection happens before any concrete goes in.
Should I choose composite or wood for a deck in San Jose?
Composite adds about $6,051 to a 12×16 deck in San Jose but removes staining every two to three years. 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.
Price the rest of the project
Figures are planning estimates built from national installed prices adjusted for California and San Jose labour, materials and footing depth. Get two or three itemised local quotes. Method.