Basement Waterproofing Cost in California
$2,800 – $18,100We estimate basement waterproofing in California at $2,800 to $18,100 for interior drainage along part or all of a basement. The national estimate is $2,450 to $15,500. California carpenter pay is 25% above the national median, ranking 3 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 | $91 | $164 |
| Estimated total | $2,800 | $18,100 |
Our estimate, not a quote. Billed rate is the California median wage from BLS (2025, $36.50 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. |
Cities in California
| Metro area | Median wage | Low | High |
|---|---|---|---|
| Los Angeles | $36.41 | $2,800 | $18,100 |
| San Francisco | $42.89 | $3,150 | $20,400 |
| Riverside | $34.08 | $2,700 | $17,300 |
| San Diego | $35.19 | $2,750 | $17,700 |
Who can legally do this in California
A contractor's license is required for projects of $1,000 or more in labor, materials and all other items. An unlicensed person may do smaller jobs only if the work needs no permit and the person employs no workers.
Check a license with CSLB Check A License
Compared with neighboring states
Other carpenter jobs in California
Basement Waterproofing cost in every state · California 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.