Wood deck cost in Kahului, HI
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $9,450 – $18,900
- Per sq ft
- $31.50 – $62.50
- before permit
- Versus US midpoint
- +25%
- US $11,400
- Rank of 300 metros
- #3
- 1 = most expensive
Local price for a wood deck in the Kahului area: $9,450 to $18,900 for 300 sq ft. The low end is a basic job on easy ground; the high end is a premium spec with harder access. The midpoint runs 25% higher than the US figure. Carpenters earn a median of $39.47 an hour in the Kahului area, 36% above the US median of $29.12.
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Estimated cost for 300 sq ft in Kahului, HI, standard level
$12,300 to $16,100
About $40.50 to $53 per sq ft before permits. Labor is about 50% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,100 | $7,950 |
| Labor | $6,100 | $8,000 |
| Permits and fees | $90 | $130 |
| Total | $12,300 | $16,100 |
Cost breakdown for 300 sq ft in Kahului, HI
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,700 | $7,050 | $9,350 | 50% |
| Labor | $4,700 | $7,050 | $9,400 | 50% |
| Permits and fees | $55 | $110 | $160 | 1% |
| Total | $9,450 | $14,200 | $18,900 | 100% |
What is behind the Kahului number
We price the labor side from BLS wage data for 2 trades: carpenters at 80%, construction laborers at 20%. Weighted together, Kahului wages are 1.42 times the national level. Labor makes up about 50% of the midpoint estimate (44% at national prices).
Materials are scaled with BEA's regional price parity for goods. Kahului is at 111.6 against 100 for the US, so a materials line of $6,300 nationally becomes $7,050 here (midpoint, 300 sq ft). Permits follow the all-items index of 109.4: $55 to $160.
Cost by quality level and size in Kahului
The cited range is split into basic, standard and premium bands, then scaled to Kahului. 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
$9,450 to $13,200
Pressure-treated pine, low to the ground, simple rectangle
Standard
$12,300 to $16,100
Cedar or upgraded pine, stairs and a railing
Premium
$15,100 to $18,900
Hardwood decking, multi-level, built-in features
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $3,800 – $5,350 | $4,950 – $6,500 | $6,100 – $7,650 |
| 12x12 (144 sq ft) | $4,550 – $6,400 | $5,950 – $7,800 | $7,300 – $9,150 |
| 16x20 (320 sq ft) | $10,100 – $14,100 | $13,100 – $17,100 | $16,100 – $20,200 |
| 20x20 (400 sq ft) | $12,600 – $17,600 | $16,300 – $21,400 | $20,100 – $25,200 |
Specs and site conditions that change a Kahului bid
Replacement versus new
Deck replacement costs $30-$55 per sq ft because of demolition and haul-away.
Permit
Deck permits average $50-$150. Many cities skip the permit for small, low, freestanding decks.
Wood species
Pressure-treated pine is the cheapest at $25-$50 per sq ft installed. Ipe runs $50-$70 and bamboo $27-$52 (HomeGuide).
Optional extras in Kahului
Add-ons start from national price ranges and are scaled by 1.27 for Kahului, which is the average of the area's wage index (1.42) and goods price index (1.12). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add stairs (flat) | $1,800 – $3,300 |
How Kahului compares
Of the five closest metros, 3 are cheaper than Kahului. Santa Cruz is the lowest at about $13,000 (midpoint, 300 sq ft), 2350 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Kahului, HIthis page | $9,450 – $18,900 | $14,200 | |
| Honolulu, HI110 miles | $9,950 – $19,900 | $14,900 | +5% |
| Santa Rosa, CA2340 miles | $8,800 – $17,700 | $13,300 | −6% |
| Santa Cruz, CA2350 miles | $8,700 – $17,400 | $13,000 | −8% |
| San Francisco, CA2355 miles | $9,500 – $19,100 | $14,300 | +1% |
| Napa, CA2370 miles | $8,800 – $17,700 | $13,300 | −6% |
| Hawaii (statewide) | $9,550 – $19,100 | $14,300 | +1% |
| United States | $7,550 – $15,200 | $11,400 | −20% |
Out of the 300 metros we cover, Kahului ranks #3 for the cost of this job (#1 is the most expensive). Statewide, Kahului is 1% below the Hawaii figure.
Elsewhere in Hawaii
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Honolulu, HI | 446,380 jobs | $9,950 – $19,900 | $14,900 | +5% |
Metros of a similar size
Big cities and small ones price differently, so here is Kahului against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Rapid City, SD | 73,820 jobs | $6,800 – $13,700 | $10,200 | −28% |
| Bloomington, IN | 73,240 jobs | $7,350 – $14,800 | $11,100 | −22% |
| Blacksburg, VA | 74,070 jobs | $6,750 – $13,600 | $10,200 | −28% |
| Auburn, AL | 72,710 jobs | $6,650 – $13,400 | $10,000 | −29% |
The best months for wood deck in Kahului
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Kahului Ap (5 miles from the city center). They are 30-year averages, so any one year can run hotter, colder or wetter.
For exterior installation, the comfortable months in Kahului are October through July: 10 of 12. Outside them, August and September have an average daytime high of 90°F or more.
Kahului gets about 16 inches of precipitation in a normal year. The wettest months are January, March and December (2.8 inches in December). Inside the workable window, June and July are the driest, at 0.2 and 0.5 inches. The station averages about 39 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 | 82 | 64 | 2.4 | Workable |
| Feb | 82 | 64 | 2.0 | Workable |
| Mar | 83 | 65 | 2.6 | Workable |
| Apr | 85 | 67 | 1.3 | Workable |
| May | 87 | 68 | 0.7 | Workable |
| Jun | 88 | 70 | 0.2 | Workable |
| Jul | 89 | 72 | 0.5 | Workable |
| Aug | 90 | 72 | 0.5 | Hot |
| Sep | 90 | 71 | 0.5 | Hot |
| Oct | 89 | 70 | 0.8 | Workable |
| Nov | 86 | 68 | 1.8 | Workable |
| Dec | 83 | 66 | 2.8 | Workable |
Who does the work: Kahului trade wages
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 Kahului the blend is 1.42.
Carpenters (47-2031), 80% of the weighting: a median of $39.47 an hour, 36% above the US median of $29.12. The middle half of them earn between $30.77 and $48.89 an hour. About 700 work in the metro. That is 94.9 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 $38.35 an hour, which is 69% above the national $22.66. The middle half of them earn between $28.72 and $47.03 an hour. BLS counts 630 of them working in the area, 85.4 for every 10,000 jobs (US: 70.5), so the local bench is deeper than average.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $1,300 to the midpoint estimate; the 25th percentile takes off about $1,200. That is a swing of roughly 8.3% to 9.0% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Kahului-Wailuku has 73,750 jobs in total (BLS, May 2025), ranking 250th 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% | $30.77 | $39.47 | $48.89 | $29.12 | 1.36 | metro |
| Construction laborers (47-2061) | 20% | $28.72 | $38.35 | $47.03 | $22.66 | 1.69 | metro |
| Blended | 100% | 1.42 | |||||
What nearby projects cost in Kahului
Jobs that often go together with wood deck are priced below at their usual sizes, using the same Kahului wage and price inputs. Compared with national midpoints, concrete patio comes out highest (+45%) and composite deck lowest (+30%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Composite deck | 300 sq ft | $15,700 – $31,400 | +30% |
| Concrete patio | 300 sq ft | $1,700 – $5,900 | +45% |
| Paver patio | 300 sq ft | $4,000 – $7,250 | +33% |
| Detached garage | 576 sq ft | $37,700 – $75,600 | +30% |
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $12,300 to $16,100 for Kahului, HI is attached.
Take this estimate with you: PDF report, $9
Multi-page report for Kahului, HI: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Wood deck in Kahului: your questions
+How much does it cost to build a wood deck in Kahului?
For 300 sq ft, expect $9,450 to $18,900 in the Kahului area. A standard-spec job lands at $12,300 to $16,100. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for wood deck in Kahului?
About $31.50 to $62.50 per sq ft for materials and labor, plus $55 to $160 for the permit if one is needed. The US range is $25 to $50.
+Is wood deck cheaper in Kahului or Honolulu?
Honolulu is 110 miles away. The midpoint for 300 sq ft there is $14,900, which is 5% more than Kahului ($14,200). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Kahului?
About 50% at the midpoint, or $7,050 out of $14,200. Materials are 50% and permits 1%. Nationally, labor is 44%.
+What would 16x20 (320 sq ft) cost in Kahului?
$10,100 to $20,200. Pick a different size in the estimator above to get your own number.
+Does wood deck need a permit in Kahului?
Often, but rules are set by your city or county building office, so call before you hire. Budget $55 to $160 for fees in the Kahului area (our national range of $50 to $150 scaled by the local price level).
+Is Kahului expensive for wood deck compared with the rest of Hawaii?
Kahului is 1% below the Hawaii statewide estimate ($14,300 at the midpoint). We cover 2 metros in Hawaii; see the state page to compare them.
+What do carpenters earn in Kahului?
The BLS median is $39.47 an hour in the Kahului area, compared with $29.12 nationally. The 25th to 75th percentile range is $30.77 to $48.89.
+What do basic and premium wood deck work cost in Kahului?
For 300 sq ft, basic work runs $9,450 to $13,200 and premium work $15,100 to $18,900. Basic means: pressure-treated pine, low to the ground, simple rectangle. Premium means: hardwood decking, multi-level, built-in features.
+When is the best time to build a wood deck in Kahului?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are October through July. June and July are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
+What does "add stairs" add in Kahului?
$1,800 to $3,300, from a national range scaled by the local wage and goods indexes.
Wood deck near Kahului
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 It Cost to Build a Deck? (2026) (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- HomeGuide: How Much Does Composite Decking Cost? (2026) (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