Radon Mitigation cost breakdown
At a mid-range, national-average baseline, a typical radon mitigation project is estimated at $800 to $2,500. The table below breaks the cost down so you can see where your project is likely to land.
| System | Typical cost | Notes |
|---|---|---|
| Sub-slab suction | $1,000 to $2,000 | Most common |
| Sump-pit system | $1,200 to $2,500 | Uses existing pit |
| Crawlspace membrane | $1,500 to $3,500 | Sealed barrier |
| Multiple suction points | $2,000 to $4,000 | Large or complex |
What drives radon mitigation cost
- System type and number of suction points.
- Foundation type: slab, basement, or crawlspace.
- Fan size and routing of the vent pipe.
- Sealing of cracks and openings.
- Regional labor rates.
Key cost factors
Test first
A radon test (a DIY kit or pro test for $150 or less) tells you if you have a problem. The EPA recommends acting at 4 pCi/L or higher.
Foundation drives the design
A simple slab is the cheapest to mitigate. Crawlspaces need a sealed membrane, and complex or multi-section foundations may need several suction points, raising the cost.