Concrete Slab costs $7.52 to $15.05 per sq ft in Honolulu in 2026. For a 400 sq ft project, expect $3,010 – $6,019 installed, typically near $4,514. That is about 10% above the Hawaii state average.
Honolulu concrete slab cost calculator
Planning estimate only. State pricing applies a construction wage index to the labor share; materials are held at national prices. Get three written quotes before committing.
Why Honolulu costs more than the rest of Hawaii
Honolulu carries roughly a 10% premium over the Hawaii statewide figure. Three things drive that gap. Metro wages run above the state average, and labor is about 50% of this bill. Permitting and inspection are slower and more expensive inside city limits. And site access is tighter, which means smaller equipment, more hand work, and sometimes street permits for deliveries.
Statewide, Hawaii averages $6.84 to $13.68 per sq ft, against $7.52 to $15.05 inside Honolulu. Suburbs on the metro fringe usually fall between the two.
Concrete Slab cost by project size in Honolulu
| Project size | Honolulu range | Typical |
|---|---|---|
| 10×10 (100 sq ft) | $752 – $1,505 | $1,129 |
| 12×12 (144 sq ft) | $1,083 – $2,167 | $1,625 |
| 12×16 (192 sq ft) | $1,445 – $2,889 | $2,167 |
| 16×20 (320 sq ft) | $2,408 – $4,815 | $3,612 |
| 20×20 (400 sq ft) | $3,010 – $6,019 | $4,514 |
| 24×24 (576 sq ft) | $4,334 – $8,668 | $6,501 |
| 30×40 (1,200 sq ft) | $9,029 – $18,058 | $13,543 |
Honolulu compared with other Hawaii markets
| Area | Cost per sq ft | vs Honolulu |
|---|---|---|
| Hilo | $6.98 – $13.95 | -7% |
| Kahului | $7.25 – $14.50 | -4% |
| Hawaii average | $6.84 – $13.68 | −10% |
Ground conditions and code in Honolulu
Permits in Honolulu
A residential permit for this work typically runs around $950 in Hawaii, and metro jurisdictions like Honolulu usually sit at the upper end of that range with longer review times. Permit cost is rarely included in a contractor quote, so add it separately. Confirm scope with the Honolulu building department before work begins.
Hiring in Honolulu
Get three written, itemised quotes from licensed and insured contractors, and make sure each specifies the same dimensions and the same grade of material. In a metro market, the cheapest bid often reflects a thinner specification or a crew travelling in from outside the area rather than a genuine saving. Ask for local references and check that the licence is current in Hawaii.
Frequently asked questions
How much does concrete slab cost in Honolulu?
In 2026, concrete slab costs $7.52 to $15.05 per sq ft in Honolulu. For a 400 sq ft project, the installed total typically lands between $3,010 and $6,019.
Is Honolulu more expensive than the rest of Hawaii?
Yes. Honolulu runs about 10% above the Hawaii statewide average, driven by metro wage levels, permitting, and tighter site access.
Do I need a permit in Honolulu?
Most work of this type and value requires a permit. Budget around $950 and allow extra time for review, since metro jurisdictions are typically slower than rural ones.
How do I compare quotes in Honolulu?
Insist on three written, itemised quotes covering identical dimensions, materials, and scope of preparation. A bid far below the others usually signals a reduced specification rather than better value.
Nearby markets
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