How Much Does Basement Waterproofing Cost in Portland, ME?
Portland pricing is near the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and Portland's diversified economy.See our methodology
Basement Waterproofing Pricing in Portland, ME
In Portland, basement waterproofing costs are 8% above the national average, reflecting the city's diversified-driven economy. The balanced labor market means you have decent options when shopping for quotes. Most residents with a population base of 68K find the pricing competitive relative to the local cost of living.
Local climate plays a direct role in basement waterproofing costs here. Cold winters and mild summers create seasonal pricing patterns for outdoor work.
Market-specific factors matter in Portland: established contractor market with competitive pricing.
Portland has moderate permitting requirements. Depending on the scope of your basement waterproofing project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
Portland vs National Average
What Affects Basement Waterproofing Cost in Portland?
Method
Interior sealant: $500-$2,000. Interior drainage + sump: $3,000-$8,000. Exterior excavation: $8,000-$15,000
Sump Pump
New sump pump installation: $500-$1,200
Portland Market Conditions
established contractor market with competitive pricing
Local Climate Impact
cold winters and mild summers create seasonal pricing patterns for outdoor work
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Tips to Save on Basement Waterproofing in Portland
- 1.Interior waterproofing is cheaper than exterior excavation
- 2.Fix grading and gutters first — many moisture issues are solved by directing water away from the foundation
- 3.Get a professional assessment before committing to expensive solutions
📈 Basement Waterproofing in Portland Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $4,586 | — |
| 2021 | $4,779 | +4.2% |
| 2022 | $5,090 | +6.5% |
| 2023 | $5,233 | +2.8% |
| 2024 | $5,400 | +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 Portland
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Frequently Asked Questions
Does basement waterproofing increase home value?
Yes. A dry basement protects the foundation and adds usable space, both of which increase value. It also prevents mold, which is a major health concern for buyers.
Why does basement waterproofing cost different in Portland than other cities?
Portland's costs reflect local labor rates driven by the diversified economy, varied climate conditions that affect materials and scheduling, and moderate permitting requirements. The balanced labor market also influences competitive pricing.
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