Thousand Oaks, CA Radon Levels
Check local Thousand Oaks radon levels and find certified testing and mitigation professionals to keep your home safe
Thousand Oaks, CA Radon Facts
Thousand Oaks in Ventura County sits within the Conejo Valley, where sedimentary bedrock and coastal formations create generally lower radon potential typical of Southern California. Recent testing shows an average radon level of 5.0 pCi/L, which exceeds the EPA action level of 4.0 pCi/L and warrants mitigation. The city's predominantly single-family homes built from the 1960s onward typically feature slab-on-grade construction, though elevated readings can still occur in certain geological pockets.
Based on 1 user-submitted radon test for homes in Thousand Oaks, CA. The EPA recommends taking action at or above 4.0 pCi/L.
Thousand Oaks, 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 Thousand Oaks?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Ventura County Pros
Thousand Oaks, CA Radon Levels
User-submitted radon test readings from homes in the Thousand Oaks area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Thousand Oaks, CA | 51-99 Years | No Basement/All Slab |
Have a radon test result for Thousand Oaks? Submit your reading to help other homeowners.
Radon FAQ for Thousand Oaks, CA
What is the average radon level in Thousand Oaks, CA?
What EPA Radon Zone is Thousand Oaks in?
How much does radon mitigation cost in Thousand Oaks?
Should I test for radon if I'm buying a home in Thousand Oaks?
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 |