Basement Waterproofing Cost in Hawaii
$3,050 – $19,800We estimate basement waterproofing in Hawaii at $3,050 to $19,800 for interior drainage along part or all of a basement. The national estimate is $2,450 to $15,500. Hawaii carpenter pay is 41% above the national median, ranking 1 of 51.
| Part of the job | Low | High |
|---|---|---|
| Parts and materials (our assumption) | $1,000 | $5,000 |
| Labor hours (our assumption) | 20 | 80 |
| Billed labor rate per hour | $102 | $184 |
| Estimated total | $3,050 | $19,800 |
Our estimate, not a quote. Billed rate is the Hawaii median wage from BLS (2025, $41.00 an hour) times 2.5 to 4.5 to cover payroll costs, overhead, travel and profit. How we estimate
What other publishers report
| Publisher | Low | High | Scope |
|---|---|---|---|
| This Old House | $12,447 | $14,833 | 1,000 square foot basement. Page dated March 2026. |
| Bob Vila | $2,300 | $7,575 | Overall, citing Angi. Page dated June 2024. |
| Fixr | $3,000 | $10,000 | Overall. Page dated February 2026. |
Who can legally do this in Hawaii
Hawaii's state pages differ: the Contractors License Board FAQ says no license is needed only up to $1,000 with no permit, while other state pages say $1,500. Treat any job over $1,000, or any job needing a permit, as requiring a license, and confirm with the board.
Compared with neighboring states
| State | Median wage | Low | High |
|---|---|---|---|
| California | $36.50 | $2,800 | $18,100 |
Other carpenter jobs in Hawaii
Basement Waterproofing cost in every state · Hawaii home repair guide
Sources
General information, not professional advice. Conditions, codes and prices vary. Turn off power, gas or water before any work, and hire a licensed professional when in doubt. Cost figures are our estimates, not quotes.