Composite deck cost in Hawaii
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $15,900 – $31,800
- Per sq ft
- $52.50 – $105
- before permit
- Versus US midpoint
- +32%
- US $18,100
- Metros covered
- 2
Across Hawaii, a composite deck costs about $15,900 to $31,800 for 300 sq ft. Statewide, that midpoint is 32% above the US figure of $18,100. Carpenters earn a median $41.00 an hour in Hawaii (US: $29.12).
Inside Hawaii, the metros we cover range from $23,500 (Kahului) to $25,200 (Honolulu) at the midpoint.
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Estimated cost for 300 sq ft in Hawaii (statewide), standard level
$20,700 to $27,000
About $68.50 to $89.50 per sq ft before permits. Labor is about 66% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,950 | $9,100 |
| Labor | $13,600 | $17,800 |
| Permits and fees | $90 | $130 |
| Total | $20,700 | $27,000 |
Cost breakdown for 300 sq ft in Hawaii
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $5,350 | $8,050 | $10,700 | 34% |
| Labor | $10,500 | $15,700 | $20,900 | 66% |
| Permits and fees | $55 | $110 | $160 | 0% |
| Total | $15,900 | $23,800 | $31,800 | 100% |
Basic, standard or premium: Hawaii prices
Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from 10x12 (120 sq ft) to 20x20 (400 sq ft).
Basic
$15,900 to $22,200
Entry-level composite boards, low deck, simple shape
Standard
$20,700 to $27,000
Mid-grade capped boards with railing and stairs
Premium
$25,400 to $31,800
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $6,400 – $8,950 | $8,300 – $10,900 | $10,200 – $12,800 |
| 12x12 (144 sq ft) | $7,650 – $10,700 | $9,950 – $13,000 | $12,300 – $15,400 |
| 16x20 (320 sq ft) | $16,900 – $23,700 | $22,000 – $28,800 | $27,100 – $33,900 |
| 20x20 (400 sq ft) | $21,100 – $29,600 | $27,500 – $36,000 | $33,900 – $42,400 |
Why two Hawaii quotes can differ
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.
Extras that change the Hawaii total
Add-ons start from national price ranges and are scaled by 1.28 for Hawaii, which is the average of the area's wage index (1.45) and goods price index (1.12). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $2,300 – $6,950 |
Related projects, priced for Hawaii
Each project weights the trades differently, so Hawaii's wage level does not push every price by the same amount. Compared with the US midpoint, concrete patio is +40% and gutters +24%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $9,550 – $19,100 | +26% |
| Concrete patio | 300 sq ft | $1,650 – $5,700 | +40% |
| Paver patio | 300 sq ft | $3,900 – $7,150 | +31% |
| Gutters | 160 linear ft | $1,650 – $5,150 | +24% |
Which Hawaii city is cheapest for composite deck?
1 of the 2 metros sit above the statewide midpoint of $23,800, and the top-to-bottom gap is 7%. 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 |
|---|---|---|---|
| Honolulu, HI | $16,800 – $33,600 | $25,200 | +6% |
| Kahului, HI | $15,700 – $31,400 | $23,500 | −1% |
Hawaii labor market for composite deck
Hawaii's labor line is priced from 2 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 1.45 times the national level.
Carpenters (47-2031), 80% of the weighting: a median of $41.00 an hour, 41% above the US median of $29.12. The middle half of them earn between $31.91 and $53.36 an hour. About 4,810 work in the state. That is 76.6 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.
For construction laborers (47-2061, weighted 20%) the local median is $37.07 an hour, which is 64% above the national $22.66. The middle half of them earn between $25.13 and $42.19 an hour. BLS counts 4,580 of them working in the state, 73.0 for every 10,000 jobs (US: 70.5), so the local bench is about average.
A crew paid at the 75th percentile for carpenters ($53.36 an hour) would add about $3,650 to the statewide midpoint; one at the 25th percentile ($31.91) would take off about $2,700. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 627,530 jobs across Hawaii (May 2025), which is 0.4% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $31.91 | $41.00 | $53.36 | $29.12 | 1.41 | state |
| Construction laborers (47-2061) | 20% | $25.13 | $37.07 | $42.19 | $22.66 | 1.64 | state |
| Blended | 100% | 1.45 | |||||
Hawaii seasons and composite deck
Weather decides when exterior installation can happen, and Hawaii is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.
Honolulu has the longest comfortable season of the metros we cover in Hawaii at 12 months; Kahului has the shortest at 10 (October through July). Rainfall runs from 16 inches a year in Kahului to 16 inches in Honolulu.
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 |
|---|---|---|---|---|
| Honolulu | 67 | 88 | 16 | 12: all year |
| Kahului | 64 | 89 | 16 | 10: October through July |
Hawaii against its neighbors
Hawaii ranks 1 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. Hawaii sits at $23,800. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| California | 2530 miles away | $14,200 – $28,500 | $21,300 | −10% |
| Oregon | 2590 miles away | $12,600 – $25,300 | $19,000 | −20% |
| Washington | 2710 miles away | $13,900 – $27,800 | $20,800 | −13% |
| Nevada | 2730 miles away | $12,100 – $24,200 | $18,200 | −24% |
| Alaska | 2850 miles away | $14,000 – $28,000 | $21,000 | −12% |
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Composite deck in Hawaii: your questions
+How much does it cost to build a composite deck in Hawaii?
$15,900 to $31,800 for 300 sq ft, using statewide wages and prices. Metro areas inside Hawaii can sit above or below that.
+Which city in Hawaii is cheapest for composite deck?
Kahului at about $23,500 (midpoint, 300 sq ft). The priciest is Honolulu at $25,200.
+Is composite deck cheaper in Hawaii than the US average?
It is 32% more expensive: $23,800 against $18,100 for 300 sq ft at the midpoint.
+What share of the price is labor in Hawaii?
About 66% ($15,700). Materials are 34%. Statewide labor for this job is weighted 1.45x the national wage level.
+What do carpenters earn in Hawaii?
The BLS statewide median is $41.00 an hour, against $29.12 for the US. The 25th to 75th percentile range is $31.91 to $53.36.
+Where does Hawaii rank for composite deck costs?
1st most expensive of 51 (the 50 states plus DC) at the midpoint, $23,800 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium composite deck work cost in Hawaii?
For 300 sq ft, basic work runs $15,900 to $22,200 and premium work $25,400 to $31,800. 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 Hawaii?
Yes where winters or summers are hard. Of the Hawaii metros we cover, Honolulu 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 Hawaii?
$2,300 to $6,950 for 300 sq ft, from a national range scaled by the statewide wage and goods indexes.
Composite deck by city in Hawaii
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