Composite deck cost in San Jose, CA
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $14,800 – $29,700
- Per sq ft
- $49 – $98.50
- before permit
- Versus US midpoint
- +23%
- US $18,100
- Rank of 300 metros
- #4
- 1 = most expensive
A composite deck in San Jose, CA usually costs $14,800 to $29,700 for 300 sq ft. That works out to about $49 to $98.50 per sq ft before permits. Compared with the national midpoint that is $4,150 more. Carpenters earn a median of $38.55 an hour in the San Jose area, 32% above the US median of $29.12.
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Estimated cost for 300 sq ft in San Jose, CA, standard level
$19,300 to $25,200
About $64 to $83.50 per sq ft before permits. Labor is about 65% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,550 | $8,600 |
| Labor | $12,600 | $16,500 |
| Permits and fees | $90 | $130 |
| Total | $19,300 | $25,200 |
Cost breakdown for 300 sq ft in San Jose, CA
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $5,050 | $7,550 | $10,100 | 34% |
| Labor | $9,700 | $14,600 | $19,400 | 65% |
| Permits and fees | $55 | $110 | $170 | 0% |
| Total | $14,800 | $22,300 | $29,700 | 100% |
Where the San Jose price comes from
The wage side of the estimate leans on carpenters, who do 80% of the hours on a typical job. Their local median is $38.55 an hour. Add the other trades involved and the blended wage index for San Jose is 1.35 (US = 1.00), which puts labor at 65% of the total.
Materials are scaled with BEA's regional price parity for goods. San Jose is at 105.2 against 100 for the US, so a materials line of $7,200 nationally becomes $7,550 here (midpoint, 300 sq ft). Permits follow the all-items index of 110.4: $55 to $170.
Optional extras in San Jose
Add-ons start from national price ranges and are scaled by 1.20 for San Jose, which is the average of the area's wage index (1.35) and goods price index (1.05). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $2,150 – $6,500 |
San Jose weather and the composite deck calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, San Jose (5 miles from the city center). They are 30-year averages, so any one year can run hotter, colder or wetter.
Weather is not a serious constraint for exterior installation in San Jose: no month in the averages is cold enough (an average daytime high under 45°F) or hot enough (an average daytime high of 90°F or more) to rule it out, so the workable window is all year.
San Jose gets about 13 inches of precipitation in a normal year. The wettest months are January, February and December (2.8 inches in January). The station averages about 16 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 60 | 42 | 2.8 | Workable |
| Feb | 62 | 44 | 2.7 | Workable |
| Mar | 66 | 46 | 2.1 | Workable |
| Apr | 69 | 48 | 1.1 | Workable |
| May | 74 | 52 | 0.4 | Workable |
| Jun | 79 | 56 | 0.2 | Workable |
| Jul | 81 | 58 | 0.0 | Workable |
| Aug | 81 | 59 | 0.1 | Workable |
| Sep | 81 | 57 | 0.1 | Workable |
| Oct | 76 | 53 | 0.5 | Workable |
| Nov | 66 | 46 | 1.3 | Workable |
| Dec | 60 | 42 | 2.3 | Workable |
San Jose: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to San Jose. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from 10x12 (120 sq ft) to 20x20 (400 sq ft).
Basic
$14,800 to $20,800
Entry-level composite boards, low deck, simple shape
Standard
$19,300 to $25,200
Mid-grade capped boards with railing and stairs
Premium
$23,700 to $29,700
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $5,950 – $8,350 | $7,750 – $10,200 | $9,550 – $12,000 |
| 12x12 (144 sq ft) | $7,150 – $10,000 | $9,300 – $12,200 | $11,500 – $14,300 |
| 16x20 (320 sq ft) | $15,800 – $22,100 | $20,600 – $26,900 | $25,300 – $31,700 |
| 20x20 (400 sq ft) | $19,700 – $27,700 | $25,700 – $33,600 | $31,600 – $39,500 |
What nearby projects cost in San Jose
Jobs that often go together with composite deck are priced below at their usual sizes, using the same San Jose wage and price inputs. Compared with national midpoints, concrete patio comes out highest (+26%) and wood deck lowest (+18%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $8,950 – $17,900 | +18% |
| Concrete patio | 300 sq ft | $1,500 – $5,100 | +26% |
| Paver patio | 300 sq ft | $3,650 – $6,700 | +23% |
| Gutters | 160 linear ft | $1,650 – $5,150 | +25% |
Specs and site conditions that change a San Jose bid
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.
Is San Jose cheap or dear? The local comparison
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 300 sq ft range from $20,100 to $22,300 across San Jose and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| San Jose, CAthis page | $14,800 – $29,700 | $22,300 | |
| Santa Cruz, CA35 miles | $14,300 – $28,600 | $21,400 | −4% |
| Merced, CA40 miles | $13,900 – $27,800 | $20,800 | −6% |
| Salinas, CA45 miles | $13,400 – $26,900 | $20,100 | −10% |
| Modesto, CA50 miles | $14,000 – $28,000 | $21,000 | −6% |
| Stockton, CA70 miles | $13,400 – $26,900 | $20,200 | −9% |
| California (statewide) | $14,200 – $28,500 | $21,300 | −4% |
| United States | $12,100 – $24,200 | $18,100 | −19% |
Out of the 300 metros we cover, San Jose ranks #4 for the cost of this job (#1 is the most expensive). Statewide, San Jose is 4% above the California figure.
Elsewhere in California
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Los Angeles, CA | 6,271,560 jobs | $14,200 – $28,400 | $21,300 | −4% |
| San Francisco, CA | 2,373,920 jobs | $16,000 – $32,000 | $24,000 | +8% |
| Riverside, CA | 1,716,760 jobs | $13,500 – $27,000 | $20,200 | −9% |
| San Diego, CA | 1,538,060 jobs | $13,900 – $27,900 | $20,900 | −6% |
| Sacramento, CA | 1,080,590 jobs | $14,000 – $28,100 | $21,100 | −5% |
| Fresno, CA | 476,890 jobs | $12,800 – $25,700 | $19,300 | −13% |
Metros of a similar size
Big cities and small ones price differently, so here is San Jose against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Las Vegas, NV | 1,136,960 jobs | $12,100 – $24,200 | $18,100 | −19% |
| San Antonio, TX | 1,126,880 jobs | $10,400 – $20,900 | $15,600 | −30% |
| Portland, OR | 1,208,410 jobs | $13,800 – $27,600 | $20,700 | −7% |
| Pittsburgh, PA | 1,114,490 jobs | $12,200 – $24,500 | $18,400 | −17% |
What local crews earn in San Jose
The labor line is built from BLS wage data, one trade at a time. This job draws on 2 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For San Jose the blend is 1.35.
Carpenters (47-2031), 80% of the weighting: a median of $38.55 an hour, 32% above the US median of $29.12. The middle half of them earn between $30.23 and $49.38 an hour. About 4,460 work in the metro. That is 39.3 per 10,000 jobs, compared with 43.1 nationally, so the supply of crews looks typical.
For construction laborers (47-2061, weighted 20%) the local median is $32.92 an hour, which is 45% above the national $22.66. The middle half of them earn between $27.33 and $38.90 an hour. BLS counts 4,420 of them working in the area, 38.9 for every 10,000 jobs (US: 70.5), so the local bench is thinner than average.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $3,200 to the midpoint estimate; the 25th percentile takes off about $2,450. That is a swing of roughly 11.1% to 14.4% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
San Jose-Sunnyvale-Santa Clara has 1,134,970 jobs in total (BLS, May 2025), ranking 27th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $30.23 | $38.55 | $49.38 | $29.12 | 1.32 | metro |
| Construction laborers (47-2061) | 20% | $27.33 | $32.92 | $38.90 | $22.66 | 1.45 | metro |
| Blended | 100% | 1.35 | |||||
Get 3 local quotes
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Composite deck in San Jose: your questions
+How much does it cost to build a composite deck in San Jose?
For 300 sq ft, expect $14,800 to $29,700 in the San Jose area. A standard-spec job lands at $19,300 to $25,200. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for composite deck in San Jose?
About $49 to $98.50 per sq ft for materials and labor, plus $55 to $170 for the permit if one is needed. The US range is $40 to $80.
+Is composite deck cheaper in San Jose or Santa Cruz?
Santa Cruz is 35 miles away. The midpoint for 300 sq ft there is $21,400, which is 4% less than San Jose ($22,300). Wage and materials indexes both feed that gap.
+How much of the bill is labor in San Jose?
About 65% at the midpoint, or $14,600 out of $22,300. Materials are 34% and permits 0%. Nationally, labor is 60%.
+What would 16x20 (320 sq ft) cost in San Jose?
$15,800 to $31,700. Pick a different size in the estimator above to get your own number.
+Does composite deck need a permit in San Jose?
Often, but rules are set by your city or county building office, so call before you hire. Budget $55 to $170 for fees in the San Jose area (our national range of $50 to $150 scaled by the local price level).
+Is San Jose expensive for composite deck compared with the rest of California?
San Jose is 4% above the California statewide estimate ($21,300 at the midpoint). We cover 23 metros in California; see the state page to compare them.
+What do carpenters earn in San Jose?
The BLS median is $38.55 an hour in the San Jose area, compared with $29.12 nationally. The 25th to 75th percentile range is $30.23 to $49.38.
+What do basic and premium composite deck work cost in San Jose?
For 300 sq ft, basic work runs $14,800 to $20,800 and premium work $23,700 to $29,700. Basic means: entry-level composite boards, low deck, simple shape. Premium means: premium capped or PVC boards, multi-level, hidden fasteners.
+Is there a bad season to build a composite deck in San Jose?
Not from a temperature point of view. NOAA's 1991-2020 normals show no month with a freezing-level overnight low or a 90°F-plus average high, so timing is mostly about contractor availability and rain.
+What does "add a deck railing" add in San Jose?
$2,150 to $6,500 for 300 sq ft, from a national range scaled by the local wage and goods indexes.
Composite deck near San Jose
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