Basement Waterproofing Cost in Los Angeles, CA
In Los Angeles, CA, basement waterproofing costs about $6,250 for interior drain and sump work, with most jobs from $2,500 to $13,130. That is 25% above the national typical price of $5,000.
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Basement Waterproofing price range in Los Angeles
| Low | Typical | High | |
|---|---|---|---|
| Price in Los Angeles | $2,500 | $6,250 | $13,130 |
| US national price | $2,000 | $5,000 | $10,500 |
| Difference | +$500 | +$1,250 | +$2,630 |
Prices in Los Angeles also shift with the season; busy months cost more. Local cost index used: 1.25 (1.00 is the US average).
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What affects the price in Los Angeles
- House or job size
- Material and quality grade
- Local labor rates
- Permits and inspections
The price covers interior drain and sump work. Typical project time is 2 to 5 days. Expected life: 20 to 30 years.
How to get a fair price in Los Angeles
- Collect at least three written quotes from licensed and insured California contractors.
- Ask for the price split into labor, materials and permits.
- Check licenses with the California state licensing board.
- Pay in stages tied to finished work, not all up front.
Frequently asked questions
How much does basement waterproofing cost in Los Angeles?
About $6,250, with a typical range of $2,500 to $13,130 for interior drain and sump work.
Is basement waterproofing more expensive in Los Angeles than average?
It is 25% above the national typical price.
Does the price include permits?
Sometimes. Ask your contractor whether permits, disposal and cleanup are in the quote.
Sources and method
- Bureau of Economic Analysis: regional price parities
- U.S. Bureau of Labor Statistics: Occupational Outlook Handbook
- Prices are modelled estimates, not quotes
Page last updated November 2026. See our editorial policy and disclaimer.