Concrete Calculator › Cost by city › Honolulu, HI
Concrete Cost in Honolulu, HI
Concrete for a 20×20 ft (400 sq ft) 4-inch concrete slab in Honolulu, HI costs about $993 ($844–$1,141). Local 2026 price is around $201 per cuyd. Free calculator inside.
What goes into concrete cost in Honolulu
The line items below are 2026 national averages adjusted by the HI construction-cost factor (×1.34). A written Honolulu quote is usually built from these pieces — use them to sanity-check any bid line by line before you sign.
| Cost item | Typical Honolulu price | Unit |
|---|---|---|
| Ready-mix concrete, 3,000–4,000 PSI | $201 – $248 | per cu yd delivered |
| Labor: forming, pouring & finishing | $5.36 – $10.72 | per sq ft |
| Gravel base & subgrade prep | $1.34 – $2.68 | per sq ft |
| Wire mesh / rebar reinforcement | $0.47 – $1.34 | per sq ft |
| Short-load fee (orders under ~4 cu yd) | $100 – $201 | per delivery |
| Residential flatwork permit | $67 – $402 | per project |
Permit fees are set by the city rather than the market — confirm current fees with the local building department.
Estimate your own Honolulu project
Prices in Honolulu, HI run about +34% versus the national average. Enter your dimensions — the calculator starts from the local $201 per cuyd rate; change it to your supplier's quote for an exact figure.
Material shopping list
- Order about 4.94 cubic yards of concrete.
- Budget about $993 before delivery, taxes, and labor.
- Add 5–10% waste for uneven subgrade, cuts, settling, or spillage.
Formula & assumptions
Area = length x width. Volume = area x depth / 12. Cubic yards = cubic feet / 27. Cost = quantity x local unit price.
- Default depth: 4 inches
- Default price: $201 per cuyd
- 80-lb bags yield: 0.6 cu ft each
These assumptions make the estimate easy for search engines and AI answer tools to verify. Replace the default price with your supplier quote for a local estimate.
Concrete cost in Honolulu by project size
Material quantities use the local Honolulu unit price; the last column adds delivery, base prep, and labor at HI-adjusted rates. Click any size for its full breakdown and calculator.
| Project size | You need | Material cost | Installed estimate |
|---|---|---|---|
| 10×10 ft · 4 in | 1.23 cu yd | $248 | $804 – $1,340 |
| 12×12 ft · 4 in | 1.78 cu yd | $357 | $1,158 – $1,930 |
| 12×16 ft · 4 in | 2.37 cu yd | $476 | $1,544 – $2,573 |
| 16×20 ft · 4 in | 3.95 cu yd | $794 | $2,573 – $4,288 |
| 20×20 ft · 4 in | 4.94 cu yd | $993 | $3,216 – $5,360 |
| 24×24 ft · 4 in | 7.11 cu yd | $1,429 | $4,631 – $7,718 |
| 30×40 ft · 4 in | 14.81 cu yd | $2,978 | $9,648 – $16,080 |
| 40×50 ft · 4 in | 24.69 cu yd | $4,963 | $16,080 – $26,800 |
Installed ranges assume straightforward access and a buildable subgrade; steep, tight, or poor-soil sites price above the top of the range.
Concrete questions Honolulu homeowners ask
- How much does a concrete slab cost in Honolulu?
- Materials alone for a 20×20 ft (400 sq ft) 4-inch concrete slab run about $993 in Honolulu. Fully installed — gravel base, forms, reinforcement, labor, and finishing — most homeowners pay $3,216 to $5,360 for the same slab, roughly $8.04–$13.4 per square foot.
- What does ready-mix concrete cost per yard in Honolulu?
- Plan on $201–$248 per cubic yard delivered for a standard 3,000–4,000 PSI mix in the Honolulu area. Orders under about 4 cubic yards usually add a short-load fee of $100–$201, so small pours cost noticeably more per yard.
- Do I need a permit to pour a concrete slab in Honolulu?
- Driveways, sidewalks, and anything structural almost always require one; small detached patio pads sometimes fall under the permit threshold. Confirm with the Honolulu building department before you pour — a permit costs far less than being ordered to remove finished work.
- Is it cheaper to pour concrete myself in Honolulu?
- Labor and finishing account for $5.36–$10.72 per square foot of the installed price, so DIY can roughly halve the cost of a simple pad. But concrete is unforgiving: once the truck arrives you have under two hours to place, screed, and finish. Most first-timers cap DIY at about 100–150 square feet.
- How thick should my slab be?
- Four inches is standard for patios and walkways; use 5–6 inches for driveways or anything carrying vehicles. Going from 4 to 6 inches adds 50% more concrete, so match the thickness to the real use.
- How can I save money on concrete in Honolulu?
- Combine small pours into one delivery to clear the short-load threshold, handle your own excavation and gravel base, and collect at least three written Honolulu quotes — 30% spreads between local bids are normal.
Concrete cost in nearby cities
Regional estimate = national average adjusted by a HI cost factor. Not a quote. Actual prices vary by site conditions, access, and supplier.