How Much Does Radon Mitigation Cost in Delaware?
Delaware pricing is near the national average. Updated for 2026.
Radon Mitigation Pricing in Delaware
In Delaware, the average cost for radon mitigation is $1,260 per system, which is 5% higher than the national average of $1,200. Most Delaware residents pay between $840 and $2,625.
Delaware has costs that track closely with the national average, though prices can still vary between urban and rural areas within the state.
Radon mitigation systems reduce indoor radon gas levels through sub-slab depressurization, sealing cracks, or installing ventilation systems. Radon is the second leading cause of lung cancer.
Delaware vs National Average
What Affects Radon Mitigation Cost in Delaware?
Foundation
Basement: $800-$1,500. Slab-on-grade: $1,000-$1,800. Crawl space: $1,200-$2,500. Multiple foundation types: $1,500-$2,500
System
Sub-slab depressurization: $800-$1,500. Sub-membrane: $1,200-$2,000. Heat recovery ventilator: $1,500-$2,500
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💡 Tips to Save on Radon Mitigation in Delaware
- 1.Start with a radon test kit ($15-$40) before hiring a pro
- 2.Sub-slab depressurization is the most cost-effective method
- 3.Some states offer tax credits or subsidies for radon mitigation
- 4.DIY-friendly test kits are available at hardware stores
📈 Radon Mitigation in Delaware Cost Trends (2020–2024)
Prices have increased +17.8% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $1,070 | — |
| 2021 | $1,115 | +4.2% |
| 2022 | $1,188 | +6.5% |
| 2023 | $1,221 | +2.8% |
| 2024 | $1,260 | +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 Radon Mitigation in Delaware
Recent Reports
Frequently Asked Questions
What radon level requires mitigation?
The EPA recommends mitigation if radon levels are at or above 4 pCi/L (picocuries per liter). Many experts suggest considering mitigation at 2 pCi/L.
Radon Mitigation Cost in Other States
Related Cost Guides for Delaware
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