Detached garage cost in Kahului, HI
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (576 sq ft)
- $37,700 – $75,600
- Per sq ft
- $65 – $130
- before permit
- Versus US midpoint
- +30%
- US $43,500
- Rank of 300 metros
- #2
- 1 = most expensive
If you want to build a detached garage in Kahului, plan on $37,700 to $75,600 for 576 sq ft, all in. Per sq ft, that is $65 to $130 for materials and labor, with the permit on top. The local midpoint runs 30% higher than the national one. 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 576 sq ft in Kahului, HI, standard level
$49,100 to $64,200
About $84.50 to $111 per sq ft before permits. Labor is about 57% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $20,900 | $27,300 |
| Labor | $27,900 | $36,500 |
| Permits and fees | $280 | $430 |
| Total | $49,100 | $64,200 |
Cost breakdown for 576 sq ft in Kahului, HI
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $16,100 | $24,100 | $32,100 | 43% |
| Labor | $21,500 | $32,200 | $42,900 | 57% |
| Permits and fees | $160 | $360 | $550 | 1% |
| Total | $37,700 | $56,600 | $75,600 | 100% |
What is behind the Kahului number
We price the labor side from BLS wage data for 5 trades: carpenters at 45%, cement masons and concrete finishers at 15%, construction laborers at 20%, electricians at 10%, roofers at 10%. Weighted together, Kahului wages are 1.49 times the national level. Labor makes up about 57% of the midpoint estimate (50% at national prices).
On the materials line, the BEA goods price index for the Kahului metro is 111.6 (US = 100). The midpoint materials bill for 576 sq ft comes to $24,100, compared with $21,600 at national prices. Permit and inspection fees are scaled by the broader index (109.4) and land at $160 to $550.
Kahului labor market for detached garage
Wages are the part of this estimate that changes most from town to town. 5 trades carry the job here, and each is compared with its US median. The weighted result for Kahului is 1.49 times the national level.
For carpenters (47-2031, weighted 45%) the local median is $39.47 an hour, which is 36% above the national $29.12. The middle half of them earn between $30.77 and $48.89 an hour. BLS counts 700 of them working in the area, 94.9 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 $38.35 an hour, 69% above the US median of $22.66. The middle half of them earn between $28.72 and $47.03 an hour. About 630 work in the metro. That is 85.4 per 10,000 jobs, compared with 70.5 nationally, which suggests plenty of local crews to bid.
For cement masons and concrete finishers (47-2051, weighted 15%) the local median is $50.22 an hour, which is 83% above the national $27.41. The middle half of them earn between $36.41 and $54.26 an hour. BLS counts 60 of them working in the area, 8.1 for every 10,000 jobs (US: 13.3), so the local bench is thinner than average.
Electricians (47-2111), 10% of the weighting: a median of $47.34 an hour, 56% above the US median of $30.38. The middle half of them earn between $29.05 and $57.68 an hour. About 310 work in the metro. That is 42.0 per 10,000 jobs, compared with 48.7 nationally, so the supply of crews looks typical.
For roofers (47-2181, weighted 10%) the local median is $29.52 an hour, which is 11% above the national $26.65. The middle half of them earn between $22.97 and $37.64 an hour. BLS counts 100 of them working in the area, 13.6 for every 10,000 jobs (US: 8.7), so the local bench is deeper than average.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($48.89 an hour) instead of the median, the labor line grows by about $3,150. At the 25th percentile ($30.77) it shrinks by about $2,900. The total moves by 5.6% or 5.1%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 73,750 jobs in the Kahului-Wailuku area. That makes it the 250th largest of the 300 metros we cover, with 0.05% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 45% | $30.77 | $39.47 | $48.89 | $29.12 | 1.36 | metro |
| Cement masons and concrete finishers (47-2051) | 15% | $36.41 | $50.22 | $54.26 | $27.41 | 1.83 | metro |
| Construction laborers (47-2061) | 20% | $28.72 | $38.35 | $47.03 | $22.66 | 1.69 | metro |
| Electricians (47-2111) | 10% | $29.05 | $47.34 | $57.68 | $30.38 | 1.56 | metro |
| Roofers (47-2181) | 10% | $22.97 | $29.52 | $37.64 | $26.65 | 1.11 | metro |
| Blended | 100% | 1.49 | |||||
Why two Kahului quotes can differ
Permits
You need a permit for a detached garage: $150-$500 on average, with separate electrical or plumbing permits if those are involved.
Electrical
Running power to a detached garage costs $1,000-$3,800 for a standard build and $5,000 or more for a long trench or amperage upgrade (Angi, Trusscore).
Size and finish level
HomeGuide puts a 2-car detached garage at $20,000-$57,600, with the spread driven by how finished it is.
Pick a size, pick a tier: detached garage pricing in Kahului
Three bands are cut from the same cited range and localized for Kahului wages and prices. They overlap on purpose: a good standard job and a modest premium job can cost the same. The grid below prices the same bands at 4 common sizes.
Basic
$37,700 to $52,800
Basic shell: slab, framing, siding, a roll-up door
Standard
$49,100 to $64,200
Finished exterior, insulated, electrical and a nicer door
Premium
$60,400 to $75,600
Insulated and drywalled, heat and cooling, upgraded finishes
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 1-car (12x20), 240 sq ft | $15,800 – $22,200 | $20,600 – $27,000 | $25,400 – $31,800 |
| 2-car (24x24), 576 sq ft | $37,700 – $52,800 | $49,100 – $64,200 | $60,400 – $75,600 |
| 2.5-car (24x30), 720 sq ft | $47,100 – $66,000 | $61,200 – $80,200 | $75,400 – $94,300 |
| 3-car (900 sq ft) | $58,800 – $82,400 | $76,500 – $100,000 | $94,200 – $118,000 |
Kahului against nearby metros and the rest of Hawaii
Of the five closest metros, 4 are cheaper than Kahului. Santa Cruz is the lowest at about $49,300 (midpoint, 576 sq ft), 2350 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Kahului, HIthis page | $37,700 – $75,600 | $56,600 | |
| Honolulu, HI110 miles | $38,600 – $77,300 | $57,900 | +2% |
| Santa Rosa, CA2340 miles | $33,400 – $67,000 | $50,200 | −11% |
| Santa Cruz, CA2350 miles | $32,800 – $65,900 | $49,300 | −13% |
| San Francisco, CA2355 miles | $36,700 – $73,600 | $55,200 | −3% |
| Napa, CA2370 miles | $33,800 – $67,900 | $50,900 | −10% |
| Hawaii (statewide) | $37,400 – $75,100 | $56,300 | −1% |
| United States | $29,000 – $58,100 | $43,500 | −23% |
Across 300 US metros, Kahului comes in at #2 from the top. The priciest is Honolulu, HI at $57,900; the cheapest is Brownsville, TX at $35,500 (midpoints, 576 sq ft). Statewide, Kahului is 1% above the Hawaii figure.
Other Hawaii metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Honolulu, HI | 446,380 jobs | $38,600 – $77,300 | $57,900 | +2% |
Cities with a workforce like Kahului's
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 | $26,300 – $52,800 | $39,500 | −30% |
| Bloomington, IN | 73,240 jobs | $28,500 – $57,300 | $42,900 | −24% |
| Blacksburg, VA | 74,070 jobs | $26,100 – $52,400 | $39,300 | −31% |
| Auburn, AL | 72,710 jobs | $25,400 – $51,000 | $38,200 | −33% |
Climate in Kahului: timing your detached garage job
We use NOAA's 1991-2020 climate normals for Kahului Ap (5 miles from the city center). These are 30-year monthly averages, not forecasts.
October through July is the stretch where pouring concrete runs into the fewest weather problems in Kahului (10 of 12 months). August and September have an average daytime high of 90°F or more.
Heat matters for concrete as well. With average highs of 90°F or more in August and September, crews often start early, wet the base and plan for faster set times.
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.
Does the season change the price? Probably, but we do not have a sourced seasonal price curve, so the estimator shows a year-round figure and does not adjust by month. When you collect quotes, ask whether scheduling in a slower month gets a better rate.
| 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 |
Related projects, priced for Kahului
Because every project leans on different trades, Kahului's wage level does not move all prices equally. Against the US midpoint, concrete driveway runs +56% and garage door +19%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Concrete slab | 400 sq ft | $3,500 – $7,100 | +39% |
| Garage door | 1 door | $860 – $4,400 | +19% |
| Concrete driveway | 600 sq ft | $5,500 – $14,600 | +56% |
| Home addition | 300 sq ft | $49,400 – $99,900 | +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 $49,100 to $64,200 for Kahului, HI is attached.
A detailed PDF report of this estimate, $9
The report lays out the detached garage numbers for Kahului, HI line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Detached garage in Kahului: your questions
+How much does it cost to build a detached garage in Kahului?
For 576 sq ft, expect $37,700 to $75,600 in the Kahului area. A standard-spec job lands at $49,100 to $64,200. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for detached garage in Kahului?
About $65 to $130 per sq ft for materials and labor, plus $160 to $550 for the permit if one is needed. The US range is $50 to $100.
+Is detached garage cheaper in Kahului or Honolulu?
Honolulu is 110 miles away. The midpoint for 576 sq ft there is $57,900, which is 2% more than Kahului ($56,600). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Kahului?
About 57% at the midpoint, or $32,200 out of $56,600. Materials are 43% and permits 1%. Nationally, labor is 50%.
+What would 2.5-car (24x30), 720 sq ft cost in Kahului?
$47,100 to $94,300. Pick a different size in the estimator above to get your own number.
+Does detached garage need a permit in Kahului?
Often, but rules are set by your city or county building office, so call before you hire. Budget $160 to $550 for fees in the Kahului area (our national range of $150 to $500 scaled by the local price level).
+Is Kahului expensive for detached garage compared with the rest of Hawaii?
Kahului is 1% above the Hawaii statewide estimate ($56,300 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 detached garage work cost in Kahului?
For 576 sq ft, basic work runs $37,700 to $52,800 and premium work $60,400 to $75,600. Basic means: basic shell: slab, framing, siding, a roll-up door. Premium means: insulated and drywalled, heat and cooling, upgraded finishes.
+When is the best time to build a detached garage 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.
Detached garage 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 a Detached Garage Cost? (2026) (accessed November 4, 2026)
- Trusscore: How Much Does It Cost to Build a Garage? 2026 Price Guide (accessed November 4, 2026)
- Angi: How Much Does It Cost to Build a Detached Garage? [2026 Data] (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
Note on derived figures: Materials = installed range / 1.6, because Angi puts professional labor at roughly an additional 60% of the materials cost (materials about 62.5% of the total).