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Basement Waterproofing Cost in Castaic, CA
Detailed pricing guide with local market adjustments and material comparisons
Castaic Average
$1,700–$8,500
Market Tier
Small City
Cost Breakdown
Basement Waterproofing Cost in Castaic
Small CityLowAverageHigh
$1,700$5,100$8,500
Market Tier
Small City (0.85x)
Small city with below-average costs
Material Cost Comparison
Interior drainage channel(Budget)
$1,275–$6,375Waterproofing membrane(Mid-Range)
$1,700–$8,500Sump pump and basin(Premium)
$2,380–$11,900Factors that affect your cost
- Interior vs exterior waterproofing
- Linear footage of affected walls
- Sump pump installation included
- French drain installation
- Foundation crack repair needed
- Exterior excavation required
- Dehumidifier addition
Get Quotes in Castaic
Castaic Housing Market
Median Home Price
$779,000
Homes for Sale
17
Price per Sq Ft
$434
Local Pros
370
Home Service Professionals Near Castaic
Agents 57lender 51multimedia_specialist 50Landscapers 49Inspectors 44Movers 42Appraisers 41HVAC Techs 36
Median Household Income
$132,153
Median Home Value
$710,400
Median Rent
$1,751/mo
Homeownership Rate
84.4%
Population
18,479
Median Year Built
1990
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
Track Your Costs
Renovation
Basement Waterproofing
Date
April 2026
Cost
$5,100
Vendor
Your local pro
Warranty
25-year material warranty
Castaic average: $1,700–$8,500
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Interior drainage channelWaterproofing membraneSump pump and basinHydraulic cement
Warranty Details
25-year material warranty
Auto-Checkup Created
"Basement Moisture Check" — every 12 months
Added by youApril 2026
Property Health Score
Good
82
foundation category +15 pts(67 → 82)
Documentation19/25
Maintenance20/25
Warranty22/25
Investment21/25
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
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I found several contractors in your area. Here are the top results:
SM
Smith & Sons
Connectedcontractor
4.9(47)
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JR
J&R Home Services
contractor
4.7(23)
From $95/hr
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Title:contractor
Category:contractor
Date:2026-04-04
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Cost FAQ
What is the average cost of basement waterproofing in Castaic?
The average cost of basement waterproofing in Castaic, CA ranges from $1,700 to $8,500. The final price depends on Interior vs exterior waterproofing, Linear footage of affected walls, Sump pump installation included.
What factors affect basement waterproofing cost?
Key factors include: Interior vs exterior waterproofing, Linear footage of affected walls, Sump pump installation included, French drain installation, Foundation crack repair needed, Exterior excavation required, Dehumidifier addition. In Castaic, local labor rates and material availability also influence pricing.
How do I get accurate quotes for basement waterproofing in Castaic?
Get at least 3 quotes from licensed professionals in Castaic. Use Fizbo SmartSearch to find and compare local contractors, read reviews, and request estimates — all in one place.