How Much Does Radon Mitigation Cost in St. Louis, MO?
St. Louis pricing is 12% below the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and St. Louis's diversified economy.See our methodology
Radon Mitigation Pricing in St. Louis, MO
St. Louis is one of the more affordable markets for radon mitigation, with costs running about 12% below the national average. The city's diversified economy and balanced labor market create favorable conditions for competitive pricing. Getting multiple quotes from the 295K-population metro area is straightforward.
Local climate plays a direct role in radon mitigation costs here. Harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations.
Market-specific factors matter in St. Louis: moderate cost of living keeps contractor rates affordable.
St. Louis has moderate permitting requirements. Depending on the scope of your radon mitigation project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
St. Louis vs National Average
What Affects Radon Mitigation Cost in St. Louis?
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
St. Louis Market Conditions
moderate cost of living keeps contractor rates affordable
Local Climate Impact
harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations
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Top-Rated Radon Mitigation Pros in St. Louis, MO
4 providersFirst Choice Plumbing
✅ VERIFIEDHeritage Restoration
✅ VERIFIEDApex Electrical
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Tips to Save on Radon Mitigation in St. Louis
- 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 St. Louis Cost Trends (2020–2024)
Prices have increased +17.9% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $896 | — |
| 2021 | $934 | +4.2% |
| 2022 | $995 | +6.5% |
| 2023 | $1,023 | +2.8% |
| 2024 | $1,056 | +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 St. Louis
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.
Why does radon mitigation cost different in St. Louis than other cities?
St. Louis'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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