Concrete slab cost in Kahului, HI
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (400 sq ft)
- $3,500 – $7,100
- Per sq ft
- $8.65 – $16.50
- before permit
- Versus US midpoint
- +39%
- US $3,850
- Rank of 300 metros
- #1
- 1 = most expensive
Kahului homeowners pay roughly $3,500 to $7,100 to pour a concrete slab at 400 sq ft, or $8.65 to $16.50 per sq ft (permit not included). Against the US midpoint, Kahului is 39% higher. Cement masons and concrete finishers earn a median of $50.22 an hour in the Kahului area, 83% above the US median of $27.41.
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Estimated cost for 400 sq ft in Kahului, HI, standard level
$4,600 to $6,000
About $11 to $14.50 per sq ft before permits. Labor is about 53% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,850 | $2,600 |
| Labor | $2,550 | $3,100 |
| Permits and fees | $170 | $320 |
| Total | $4,600 | $6,000 |
Cost breakdown for 400 sq ft in Kahului, HI
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $1,350 | $2,250 | $3,100 | 42% |
| Labor | $2,100 | $2,850 | $3,550 | 53% |
| Permits and fees | $55 | $250 | $440 | 5% |
| Total | $3,500 | $5,300 | $7,100 | 100% |
Why Kahului prices look the way they do
Labor is 53% of the midpoint bill here, against 42% nationally. The mix of trades behind this job is cement masons and concrete finishers (50%), construction laborers (30%), operating engineers and other construction equipment operators (10%), carpenters (10%). We weight each trade's local median wage by that share and compare it with the national median. In Kahului the blended ratio comes out at 1.77.
On the materials line, the BEA goods price index for the Kahului metro is 111.6 (US = 100). The midpoint materials bill for 400 sq ft comes to $2,250, compared with $2,000 at national prices. Permit and inspection fees are scaled by the broader index (109.4) and land at $55 to $440.
Add-ons priced for Kahului
Extras are quoted nationally and then scaled to Kahului by the average of the local wage index (1.77) and goods index (1.12), a factor of 1.44. 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 rebar reinforcement | $580 – $1,750 |
| Remove old concrete first | $1,150 – $3,450 |
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 detached garage +30%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Concrete driveway | 600 sq ft | $5,500 – $14,600 | +56% |
| Concrete patio | 300 sq ft | $1,700 – $5,900 | +45% |
| Detached garage | 576 sq ft | $37,700 – $75,600 | +30% |
| Stamped concrete | 400 sq ft | $4,600 – $11,700 | +45% |
| Asphalt driveway | 600 sq ft | $4,250 – $11,000 | +46% |
| Gravel driveway | 1,000 sq ft | $3,800 – $15,200 | +50% |
Cost by quality level and size 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 5 common sizes.
Basic
$3,500 to $4,950
4-inch broom-finish slab, light mesh, easy truck access
Standard
$4,600 to $6,000
4-5 inch slab with rebar or heavier mesh and standard base prep
Premium
$5,650 to $7,100
6-inch slab, heavy reinforcement, thick base, pump truck or tight access
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x10 pad (100 sq ft) | $920 – $1,400 | $1,250 – $1,750 | $1,650 – $2,100 |
| 12x12 (144 sq ft) | $1,300 – $1,900 | $1,750 – $2,350 | $2,200 – $2,850 |
| 20x20 (400 sq ft) | $3,500 – $4,950 | $4,600 – $6,000 | $5,650 – $7,100 |
| 24x24 garage floor (576 sq ft) | $5,050 – $7,050 | $6,550 – $8,550 | $8,050 – $10,000 |
| 30x40 foundation (1,200 sq ft) | $10,400 – $14,400 | $13,400 – $17,400 | $16,400 – $20,400 |
Why two Kahului quotes can differ
Thickness and mix
A 4-inch slab uses about 1.23 cubic yards of concrete per 100 sq ft; a 6-inch slab uses about 1.85. Stepping up from a 3,000 PSI to a 4,000-4,500 PSI mix adds $10-$40 per cubic yard (Estimators.us).
Base and reinforcement
A compacted gravel base, vapor barrier, and wire mesh or rebar are priced separately by some contractors and bundled by others. Ask which one your quote does.
Truck and pump access
If the mixer truck can't back up to the forms, someone has to wheelbarrow it in or hire a pump. Pump or line-pump hire is typically billed per day.
How Kahului compares
Same job, same size (400 sq ft), priced for the nearest metros. Kahului is the priciest of the group. Santa Cruz is the cheapest at $4,200.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Kahului, HIthis page | $3,500 – $7,100 | $5,300 | |
| Honolulu, HI110 miles | $3,450 – $6,950 | $5,200 | −2% |
| Santa Rosa, CA2340 miles | $2,800 – $5,850 | $4,300 | −19% |
| Santa Cruz, CA2350 miles | $2,700 – $5,700 | $4,200 | −21% |
| San Francisco, CA2355 miles | $3,150 – $6,450 | $4,800 | −9% |
| Napa, CA2370 miles | $2,900 – $6,000 | $4,450 | −16% |
| Hawaii (statewide) | $3,400 – $6,900 | $5,150 | −3% |
| United States | $2,450 – $5,200 | $3,850 | −28% |
Across 300 US metros, Kahului comes in at #1 from the top. The priciest is Kahului, HI at $5,300; the cheapest is McAllen, TX at $3,200 (midpoints, 400 sq ft). Statewide, Kahului is 3% above the Hawaii figure.
Other Hawaii metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Honolulu, HI | 446,380 jobs | $3,450 – $6,950 | $5,200 | −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 | $2,250 – $4,800 | $3,550 | −33% |
| Bloomington, IN | 73,240 jobs | $2,500 – $5,200 | $3,850 | −28% |
| Blacksburg, VA | 74,070 jobs | $2,200 – $4,750 | $3,450 | −35% |
| Auburn, AL | 72,710 jobs | $2,150 – $4,600 | $3,350 | −36% |
When to schedule concrete slab in Kahului
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 |
Local wages behind the labor line
Wages are the part of this estimate that changes most from town to town. 4 trades carry the job here, and each is compared with its US median. The weighted result for Kahului is 1.77 times the national level.
For cement masons and concrete finishers (47-2051, weighted 50%) 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.
Construction laborers (47-2061), 30% 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 operating engineers and other construction equipment operators (47-2073, weighted 10%) the local median is $60.09 an hour, which is 109% above the national $28.78. The middle half of them earn between $33.42 and $62.07 an hour. BLS counts 400 of them working in the area, 54.2 for every 10,000 jobs (US: 30.7), so the local bench is deeper than average.
For carpenters (47-2031, weighted 10%) 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.
Quotes come from real crews, not medians. If the cement masons and concrete finishers on your job are paid at the 75th percentile ($54.26 an hour) instead of the median, the labor line grows by about $120. At the 25th percentile ($36.41) it shrinks by about $400. The total moves by 2.2% or 7.6%, 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 |
|---|---|---|---|---|---|---|---|
| Cement masons and concrete finishers (47-2051) | 50% | $36.41 | $50.22 | $54.26 | $27.41 | 1.83 | metro |
| Construction laborers (47-2061) | 30% | $28.72 | $38.35 | $47.03 | $22.66 | 1.69 | metro |
| Operating engineers and other construction equipment operators (47-2073) | 10% | $33.42 | $60.09 | $62.07 | $28.78 | 2.09 | metro |
| Carpenters (47-2031) | 10% | $30.77 | $39.47 | $48.89 | $29.12 | 1.36 | metro |
| Blended | 100% | 1.77 | |||||
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Concrete slab in Kahului: your questions
+How much does it cost to pour a concrete slab in Kahului?
For 400 sq ft, expect $3,500 to $7,100 in the Kahului area. A standard-spec job lands at $4,600 to $6,000. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for concrete slab in Kahului?
About $8.65 to $16.50 per sq ft for materials and labor, plus $55 to $440 for the permit if one is needed. The US range is $6 to $12.
+Is concrete slab cheaper in Kahului or Honolulu?
Honolulu is 110 miles away. The midpoint for 400 sq ft there is $5,200, which is 2% less than Kahului ($5,300). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Kahului?
About 53% at the midpoint, or $2,850 out of $5,300. Materials are 42% and permits 5%. Nationally, labor is 42%.
+What would 20x20 (400 sq ft) cost in Kahului?
$3,500 to $7,100. Pick a different size in the estimator above to get your own number.
+Does concrete slab 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 $440 for fees in the Kahului area (our national range of $50 to $400 scaled by the local price level).
+Is Kahului expensive for concrete slab compared with the rest of Hawaii?
Kahului is 3% above the Hawaii statewide estimate ($5,150 at the midpoint). We cover 2 metros in Hawaii; see the state page to compare them.
+What do cement masons and concrete finishers earn in Kahului?
The BLS median is $50.22 an hour in the Kahului area, compared with $27.41 nationally. The 25th to 75th percentile range is $36.41 to $54.26.
+What do basic and premium concrete slab work cost in Kahului?
For 400 sq ft, basic work runs $3,500 to $4,950 and premium work $5,650 to $7,100. Basic means: 4-inch broom-finish slab, light mesh, easy truck access. Premium means: 6-inch slab, heavy reinforcement, thick base, pump truck or tight access.
+When is the best time to pour a concrete slab 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 rebar reinforcement" add in Kahului?
$580 to $1,750 for 400 sq ft, from a national range scaled by the local wage and goods indexes.
Concrete slab 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 Concrete Slab Cost? (2026) (accessed November 4, 2026)
- Estimators.us: Concrete Slab Cost in 2026 | $6-$12/Sq Ft Guide (accessed November 4, 2026)
- HomeGuide: How Much Does a Concrete Patio Cost? (2026) (accessed November 4, 2026)
- HomeGuide: How Much Does a Concrete Driveway 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