Brentwood, CA Radon Levels
Check local Brentwood radon levels and find certified testing and mitigation professionals to keep your home safe
Brentwood, CA Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Contra Costa County, CA
Zip Code
94513
Located in Contra Costa County within the San Francisco Bay Area, Brentwood has experienced rapid residential growth with many newer homes built on alluvial soils from the Sacramento-San Joaquin Delta. Radon testing data for zip code 94513 remains limited, despite the area's EPA Zone 2 classification indicating low-to-moderate radon potential. Homeowners should test their properties to determine actual radon levels in their specific location.
Brentwood, 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 Brentwood?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Contra Costa County Pros
1-800-299-3578
Toll-free · Mon–Fri 8am–6pm ET
Radon FAQ for Brentwood, CA
What EPA Radon Zone is Brentwood in?
Brentwood and the 94513 zip code are in Contra Costa County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Brentwood?
Radon mitigation in Brentwood 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 Brentwood?
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 |