Guerneville, CA Radon Levels
Check local Guerneville radon levels and find certified testing and mitigation professionals to keep your home safe
Guerneville, CA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Sonoma County, CA
Zip Code
95446
Located along the Russian River in Sonoma County's redwood country, Guerneville sits on alluvial deposits and ancient river terraces within the Santa Rosa Metro area. The community's eclectic housing stock ranges from historic river cabins to modern homes, many built on various foundation types to accommodate flood plain requirements. While radon testing data for zip code 95446 remains limited, the area's geology and diverse construction styles warrant individual testing for homeowner peace of mind.
Guerneville, 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 Guerneville?
- 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 Guerneville, CA
What EPA Radon Zone is Guerneville in?
Guerneville and the 95446 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 Guerneville?
Radon mitigation in Guerneville 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 Guerneville?
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 |