Waterproofing in California
Talk to a local waterproofing pro anywhere in California, including Los Angeles, San Diego, San Jose, San Francisco, Sacramento and Fresno. See what the job typically costs here and what the local climate means for it.
What California's climate means for your waterproofing
Local conditions change which materials and methods make sense.
- Expansive clay soil
Clay soil swells when wet and presses on foundation walls. Ask about drainage on the outside as well as the inside.
- Climate zone 2–6
California sits in IECC climate zone 2–6, with real winters. Outdoor work slows in the coldest months, so book early in the season if timing matters.
- Timing
Late summer and fall, before the wet season, is the best time to book. Spring is the busiest.
Cities in California
Choose yours to see prices for your area across the site.
- Interior drain tile and sump pumps
- Exterior excavation and membranes
- Foundation crack sealing
- Crawlspace encapsulation
- Window well drainage
- Battery backup sump pumps
Rough cost estimate
Pick the size closest to your job.
interior to exterior systems. Approximate.
How the call works
Most waterproofing calls take about four to five minutes. You don't need an account to call.
- Plan it in 30 secondsFour quick taps so the pro knows the job before you call.
- Talk to a local proThey ask about the job, your home and your timing.
- Get your priceCompare it with the typical range for your state, then decide.
Waterproofing in California: questions
How much does waterproofing cost in California?
Typical pricing in California runs about $3,050 – $18,250 (interior to exterior systems). That is noticeably above the national range because of local labor and material costs. Your quote depends on your home, materials and access.
When is the best time for waterproofing in California?
Late summer and fall, before the wet season, is the best time to book. Spring is the busiest. In California's colder months, outdoor work can be limited, so plan around the weather.
Interior or exterior waterproofing?
Interior drainage with a sump pump is the most common fix and costs less. Exterior membranes stop water at the wall but require digging around the house.
Does sealing paint work?
Waterproof paint can help with damp walls but does not stop water under pressure. It is a supplement, not a fix.
Talk to a waterproofing pro in California
The quote costs nothing and there is no obligation.
(866) 384-7564