Radon mitigation cost guide
Every figure below is quoted from the linked source. We don’t make up prices.
National averages (2026)
| Source | Typical range | Average |
|---|---|---|
| Angi (updated Sep 28, 2026; 1,184 projects) | $805–$1,326 | $1,043 |
| HomeAdvisor (updated Jun 19, 2026) | $786–$1,274 | $1,028 |
| EPA Consumer’s Guide (older edition) | $800–$2,500 | about $1,200 |
Angi’s city averages (2026)
Kansas City $700 · Denver $800 · Boston $1,000 · Atlanta $1,100 · Chicago $1,200 · New York $1,400 · Albuquerque $1,500 · Los Angeles $2,000.
By method (EPA, older edition)
| Method | Install (contractor) | Annual operating |
|---|---|---|
| Subslab suction | $800–$2,500 | $50–$200 |
| Draintile suction | $800–$1,700 | $50–$200 |
| Block-wall suction | $1,500–$3,000 | $100–$400 |
| Sump-hole suction | $800–$2,500 | $50–$250 |
| Crawlspace submembrane | $1,000–$2,500 | $50–$250 |
| Well water: aeration | $3,000–$4,500 | $50–$150 |
Comparing quotes
From the Minnesota Department of Health.
- The installer should visit the house before quoting, not quote by phone or email.
- Ask for the individual’s license number and verify it.
- Is the price firm? Are electrical work and permits included?
- Do they guarantee results below 4.0 pCi/L, and what happens if the system misses?
- Don’t pay in full until a post-mitigation test shows reduced levels.
- Be wary of quotes under $1,000.
Get up to 3 quotes See typical costs
FAQ
What is the average cost of radon mitigation?
Angi’s 2026 data, from 1,184 projects, gives $805–$1,326 with an average of $1,043. HomeAdvisor’s 2026 page gives $786–$1,274 with an average of $1,028.
Is a very cheap quote a red flag?
The Minnesota Department of Health advises avoiding unlicensed installers and rates under $1,000, which it calls often too good to be true.