How Much Does Basement Waterproofing Cost in Washington?
Washington pricing is above the national average. Updated for 2024-2025.
Basement Waterproofing Pricing in Washington
In Washington, the average cost for basement waterproofing is $6,325 project, which is 15% higher than the national average of $5,500. Most Washington residents pay between $2,300 and $11,500.
Washington has a higher cost of living than most states, which translates to higher labor rates and material costs. Urban areas within Washington may be even higher.
Basement waterproofing costs vary based on method and extent of water intrusion.
Washington vs National Average
What Affects Basement Waterproofing Cost in Washington?
Method
Interior: $3,000-$7,000; exterior: $8,000-$15,000
Size
Larger basements cost more
Severity
Active flooding costs more than dampness
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💡 Tips to Save on Basement Waterproofing in Washington
- 1.Start with exterior grading and gutters
- 2.Seal minor cracks yourself
- 3.Interior sealers for minor dampness
- 4.Get drainage quotes first
📈 Basement Waterproofing in Washington Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $5,372 | — |
| 2021 | $5,598 | +4.2% |
| 2022 | $5,962 | +6.5% |
| 2023 | $6,129 | +2.8% |
| 2024 | $6,325 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Basement Waterproofing in Washington
Recent Reports
Frequently Asked Questions
Is basement waterproofing worth it?
Yes, it protects your foundation, prevents mold, and can increase home value 10-25%.
How long does it last?
Professional systems typically last 25+ years.
Basement Waterproofing Cost in Other States
Related Cost Guides for Washington
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