Composite deck cost in California
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $14,200 – $28,500
- Per sq ft
- $47 – $94.50
- before permit
- Versus US midpoint
- +18%
- US $18,100
- Metros covered
- 23
California prices for composite deck: $14,200 to $28,500 for 300 sq ft, or $47 to $94.50 per sq ft without the permit. The state midpoint is 18% above the national one. Local wages for carpenters are $36.50 an hour.
Inside California, the metros we cover range from $19,000 (Visalia) to $24,000 (San Francisco) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in California (statewide), standard level
$18,500 to $24,200
About $61.50 to $80 per sq ft before permits. Labor is about 64% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,600 | $8,650 |
| Labor | $11,800 | $15,400 |
| Permits and fees | $90 | $130 |
| Total | $18,500 | $24,200 |
Cost breakdown for 300 sq ft in California
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $5,100 | $7,650 | $10,200 | 36% |
| Labor | $9,050 | $13,600 | $18,100 | 64% |
| Permits and fees | $55 | $110 | $170 | 1% |
| Total | $14,200 | $21,300 | $28,500 | 100% |
Quality levels and sizes in California
The cited range is cut into three overlapping bands (basic, standard and premium) and scaled to statewide California wages and prices. The grid prices the same bands at 4 common sizes.
Basic
$14,200 to $19,900
Entry-level composite boards, low deck, simple shape
Standard
$18,500 to $24,200
Mid-grade capped boards with railing and stairs
Premium
$22,800 to $28,500
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $5,700 – $8,050 | $7,450 – $9,750 | $9,200 – $11,500 |
| 12x12 (144 sq ft) | $6,850 – $9,600 | $8,900 – $11,700 | $11,000 – $13,800 |
| 16x20 (320 sq ft) | $15,200 – $21,200 | $19,700 – $25,800 | $24,300 – $30,400 |
| 20x20 (400 sq ft) | $18,900 – $26,500 | $24,600 – $32,200 | $30,300 – $37,900 |
Optional extras in California
Extras are quoted nationally and then scaled to California by the average of the local wage index (1.26) and goods index (1.06), a factor of 1.16. Tick any of them in the estimator above to add them to your total. Treat these as planning figures: an add-on touches different trades than the main job, so the scaling is an approximation.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $2,100 – $6,250 |
California versus the states around it
California ranks 3 of 51 (the 50 states plus DC) for composite deck, where 1 is the most expensive. The costliest is Hawaii at $23,800 and the cheapest Oklahoma at $15,300, both for 300 sq ft at the midpoint. California sits at $21,300. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Nevada | 210 miles away | $12,100 – $24,200 | $18,200 | −15% |
| Arizona | 430 miles away | $11,600 – $23,300 | $17,500 | −18% |
| Utah | 490 miles away | $11,100 – $22,200 | $16,600 | −22% |
| Idaho | 600 miles away | $11,100 – $22,100 | $16,600 | −22% |
| Oregon | 690 miles away | $12,600 – $25,300 | $19,000 | −11% |
California labor market for composite deck
Statewide wages come from BLS's state-level estimates, which blend big cities with small towns and rural areas. 2 trades drive the labor line for this job, and the weighted ratio against the national wage level is 1.26 for California.
For carpenters (47-2031, weighted 80%) the local median is $36.50 an hour, which is 25% above the national $29.12. The middle half of them earn between $28.72 and $46.07 an hour. BLS counts 100,750 of them working in the state, 55.3 for every 10,000 jobs (US: 43.1), so the local bench is deeper than average.
Construction laborers (47-2061), 20% of the weighting: a median of $28.98 an hour, 28% above the US median of $22.66. The middle half of them earn between $23.15 and $37.75 an hour. About 88,240 work in the state. That is 48.4 per 10,000 jobs, compared with 70.5 nationally, so expect fewer local crews to bid.
A crew paid at the 75th percentile for carpenters ($46.07 an hour) would add about $2,850 to the statewide midpoint; one at the 25th percentile ($28.72) would take off about $2,300. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 18,213,700 jobs across California (May 2025), which is 11.7% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $28.72 | $36.50 | $46.07 | $29.12 | 1.25 | state |
| Construction laborers (47-2061) | 20% | $23.15 | $28.98 | $37.75 | $22.66 | 1.28 | state |
| Blended | 100% | 1.26 | |||||
Composite deck: what moves the price in California
Board grade
Composite materials run $16-$32 per sq ft and the installed price is $40-$80 per sq ft, including the substructure (HomeGuide).
Labor
Labor for composite is $24-$48 per sq ft, higher than wood because the boards need extra parts and more careful assembly.
Drainage
Ground-level decks over poorly draining yards may need $1,000-$4,000 of drainage work first.
Engineering
Large or complex decks may need a structural engineer at $100-$220 an hour to get a permit.
California metro-by-metro prices
5 of the 23 metros sit above the statewide midpoint of $21,300, and the top-to-bottom gap is 26%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| San Francisco, CA | $16,000 – $32,000 | $24,000 | +12% |
| San Jose, CA | $14,800 – $29,700 | $22,300 | +4% |
| Santa Rosa, CA | $14,600 – $29,300 | $21,900 | +3% |
| Napa, CA | $14,600 – $29,200 | $21,900 | +3% |
| San Luis Obispo, CA | $14,300 – $28,600 | $21,500 | +1% |
| Santa Cruz, CA | $14,300 – $28,600 | $21,400 | level |
| Vallejo, CA | $14,300 – $28,600 | $21,400 | level |
| Los Angeles, CA | $14,200 – $28,400 | $21,300 | level |
| Sacramento, CA | $14,000 – $28,100 | $21,100 | −1% |
| Modesto, CA | $14,000 – $28,000 | $21,000 | −2% |
| Santa Maria, CA | $14,000 – $28,000 | $21,000 | −2% |
| Oxnard, CA | $13,900 – $28,000 | $20,900 | −2% |
| San Diego, CA | $13,900 – $27,900 | $20,900 | −2% |
| Merced, CA | $13,900 – $27,800 | $20,800 | −2% |
| El Centro, CA | $13,800 – $27,700 | $20,700 | −3% |
| Chico, CA | $13,600 – $27,300 | $20,500 | −4% |
| Redding, CA | $13,600 – $27,300 | $20,500 | −4% |
| Riverside, CA | $13,500 – $27,000 | $20,200 | −5% |
| Stockton, CA | $13,400 – $26,900 | $20,200 | −5% |
| Salinas, CA | $13,400 – $26,900 | $20,100 | −6% |
| Bakersfield, CA | $13,100 – $26,300 | $19,700 | −8% |
| Fresno, CA | $12,800 – $25,700 | $19,300 | −10% |
| Visalia, CA | $12,700 – $25,400 | $19,000 | −11% |
If you are planning more than one job in California
The table prices neighboring jobs at their usual sizes using statewide California wages and prices. Against national midpoints, paver patio comes out highest (+15%) and gutters lowest (+12%), because each job leans on different trades.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $8,650 – $17,400 | +15% |
| Concrete patio | 300 sq ft | $1,400 – $4,600 | +14% |
| Paver patio | 300 sq ft | $3,450 – $6,300 | +15% |
| Gutters | 160 linear ft | $1,450 – $4,700 | +12% |
Weather windows across California
Season matters for composite deck. For each California metro below we took NOAA's 1991-2020 monthly normals from the nearest suitable station and counted comfortable months for exterior installation.
Los Angeles has the longest comfortable season of the metros we cover in California at 12 months; El Centro has the shortest at 6 (November through April). Rainfall runs from 3 inches a year in El Centro to 34 inches in Redding.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| Los Angeles | 48 | 78 | 14 | 12: all year |
| San Francisco | 47 | 66 | 23 | 12: all year |
| Riverside | 43 | 95 | 10 | 9: October through June |
| San Diego | 46 | 80 | 11 | 12: all year |
| San Jose | 42 | 81 | 13 | 12: all year |
| Sacramento | 41 | 94 | 19 | 10: September through June |
| Fresno | 41 | 98 | 11 | 8: October through May |
| Bakersfield | 41 | 98 | 6 | 8: October through May |
| Oxnard | 46 | 73 | 13 | 12: all year |
| Stockton | 39 | 95 | 17 | 8: October through May |
| Santa Rosa | 38 | 82 | 32 | 12: all year |
| Santa Maria | 41 | 73 | 13 | 12: all year |
| Modesto | 39 | 95 | 12 | 9: September through May |
| Salinas | 42 | 71 | 13 | 12: all year |
| Visalia | 38 | 94 | 10 | 10: September through June |
| Vallejo | 38 | 79 | 20 | 12: all year |
| San Luis Obispo | 41 | 78 | 18 | 12: all year |
| Santa Cruz | 41 | 74 | 31 | 12: all year |
| Merced | 37 | 96 | 12 | 8: October through May |
| Chico | 36 | 95 | 27 | 9: October through June |
| Napa | 40 | 83 | 27 | 12: all year |
| Redding | 38 | 100 | 34 | 8: October through May |
| El Centro | 43 | 107 | 3 | 6: November through April |
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Composite deck in California: your questions
+How much does it cost to build a composite deck in California?
$14,200 to $28,500 for 300 sq ft, using statewide wages and prices. Metro areas inside California can sit above or below that.
+Which city in California is cheapest for composite deck?
Visalia at about $19,000 (midpoint, 300 sq ft). The priciest is San Francisco at $24,000.
+Is composite deck cheaper in California than the US average?
It is 18% more expensive: $21,300 against $18,100 for 300 sq ft at the midpoint.
+What share of the price is labor in California?
About 64% ($13,600). Materials are 36%. Statewide labor for this job is weighted 1.26x the national wage level.
+What do carpenters earn in California?
The BLS statewide median is $36.50 an hour, against $29.12 for the US. The 25th to 75th percentile range is $28.72 to $46.07.
+Where does California rank for composite deck costs?
3rd most expensive of 51 (the 50 states plus DC) at the midpoint, $21,300 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium composite deck work cost in California?
For 300 sq ft, basic work runs $14,200 to $19,900 and premium work $22,800 to $28,500. Basic means: entry-level composite boards, low deck, simple shape. Premium means: premium capped or PVC boards, multi-level, hidden fasteners.
+Does the season matter for composite deck in California?
Yes where winters or summers are hard. Of the California metros we cover, Los Angeles has the most comfortable months (12 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
+What does "add a deck railing" add in California?
$2,100 to $6,250 for 300 sq ft, from a national range scaled by the statewide wage and goods indexes.
Composite deck by city in California
- San Francisco, CA$24,000 midpoint
- San Jose, CA$22,300 midpoint
- Santa Rosa, CA$21,900 midpoint
- Napa, CA$21,900 midpoint
- San Luis Obispo, CA$21,500 midpoint
- Santa Cruz, CA$21,400 midpoint
- Vallejo, CA$21,400 midpoint
- Los Angeles, CA$21,300 midpoint
- Sacramento, CA$21,100 midpoint
- Modesto, CA$21,000 midpoint
- Santa Maria, CA$21,000 midpoint
- Oxnard, CA$20,900 midpoint
- San Diego, CA$20,900 midpoint
- Merced, CA$20,800 midpoint
- El Centro, CA$20,700 midpoint
- Chico, CA$20,500 midpoint
- Redding, CA$20,500 midpoint
- Riverside, CA$20,200 midpoint
- Stockton, CA$20,200 midpoint
- Salinas, CA$20,100 midpoint
- Bakersfield, CA$19,700 midpoint
- Fresno, CA$19,300 midpoint
- Visalia, CA$19,000 midpoint
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does Composite Decking Cost? (2026) (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020