Sebastopol, CA Radon Levels
Check local Sebastopol radon levels and find certified testing and mitigation professionals to keep your home safe
Sebastopol, CA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Sonoma County, CA
Zip Code
95472
Set in the heart of Sonoma County's wine country, Sebastopol sits on alluvial soils and volcanic deposits that generally create moderate radon conditions. The community features a blend of historic Victorian homes and modern residences, with many properties in the 95472 area having crawl spaces or concrete slab foundations. While local testing data is currently limited, the region's geological makeup suggests homeowners should test for radon, especially in homes with enclosed foundation areas.
Sebastopol, CA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Sebastopol?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Sonoma County Pros
1-800-299-3578
Toll-free · Mon–Fri 8am–6pm ET
Radon FAQ for Sebastopol, CA
What EPA Radon Zone is Sebastopol in?
Sebastopol and the 95472 zip code are in Sonoma County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Sebastopol?
Radon mitigation in Sebastopol typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Sebastopol?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in California
Cities in California with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Los Angeles | 7.83 pCi/L | 6 |
| Mammoth Lakes | 10.80 pCi/L | 5 |
| San Jose | 4.20 pCi/L | 5 |
| Rancho Palos Verdes | 8.00 pCi/L | 4 |
| Bishop | 6.25 pCi/L | 4 |
| Oakland | 5.00 pCi/L | 4 |
| Woodland Hills | 7.67 pCi/L | 3 |
| South Lake Tahoe | 6.33 pCi/L | 3 |
| Palos Verdes Peninsula | 6.00 pCi/L | 3 |
| Sacramento | 4.33 pCi/L | 3 |