Home Improvement Costs in Honolulu, HI
Budgeting ranges for 30 popular projects in Honolulu, Hawaii. Click any project for a full calculator and detailed factors.
City multiplier used on this hub: ×1.30 (approximation). Last updated December 28, 2025.
Project cost overview
These are rough ranges to help you plan. For an accurate quote, measure your scope and request bids from local pros.
| Project | Low | Typical | High |
|---|---|---|---|
| Fence Installation per ft |
$3,900 | $6,825 | $11,700 |
| Deck Installation per sq ft |
$9,360 | $17,160 | $28,080 |
| Pergola Installation per sq ft |
$8,320 | $14,560 | $24,960 |
| Paver Patio Installation per sq ft |
$4,680 | $7,800 | $13,650 |
| Concrete Patio / Slab per sq ft |
$3,640 | $6,370 | $10,010 |
| Asphalt Driveway per sq ft |
$3,120 | $5,460 | $9,360 |
| Roof Replacement per sq ft |
$9,360 | $16,380 | $28,080 |
| Window Replacement per window |
$5,850 | $10,400 | $18,200 |
| Siding Replacement per sq ft |
$12,480 | $20,800 | $37,440 |
| Gutter Installation per ft |
$1,404 | $2,808 | $4,680 |
| HVAC Replacement per system |
$8,450 | $12,350 | $18,850 |
| Water Heater Replacement (Tank) per unit |
$1,560 | $2,470 | $4,160 |
| Tankless Water Heater Installation per unit |
$3,250 | $4,940 | $7,800 |
| Bathroom Remodel per bathroom |
$7,735 | $17,680 | $38,675 |
| Kitchen Remodel per kitchen |
$19,500 | $45,500 | $97,500 |
| Basement Finishing per sq ft |
$23,400 | $42,900 | $78,000 |
| Attic Insulation per sq ft |
$1,950 | $3,900 | $7,800 |
| Solar Panel Installation per kW |
$19,500 | $24,960 | $32,760 |
| EV Charger Installation per charger |
$1,040 | $1,690 | $3,250 |
| Interior Painting per sq ft (floor area) |
$4,680 | $8,190 | $15,210 |
| Exterior Painting per sq ft (floor area) |
$7,150 | $12,870 | $22,880 |
| Flooring Installation (LVP / Laminate) per sq ft |
$4,160 | $7,280 | $12,480 |
| Drywall Installation / Replacement per sq ft |
$2,600 | $4,550 | $7,800 |
| Electrical Panel Upgrade per panel |
$1,950 | $3,900 | $7,150 |
| Recessed Lighting Installation per light |
$1,560 | $2,600 | $4,680 |
| Whole-Home Repipe (Plumbing) per home |
$5,200 | $11,700 | $20,800 |
| French Drain Installation per ft |
$1,950 | $3,510 | $6,630 |
| Epoxy Garage Floor Coating per sq ft |
$1,755 | $3,510 | $5,850 |
| Tree Removal per tree |
$390 | $1,105 | $2,860 |
| Landscaping (Full Yard Refresh) per sq ft |
$10,400 | $20,800 | $41,600 |
Next steps
- Pick a project above and use the calculator to match your scope.
- Confirm permit requirements for Honolulu with your city/county building department.
- Get 2–3 written quotes and compare scope line-by-line.