Ventura, CA Radon Levels

Q: What EPA Radon Zone is Ventura in?

Ventura is in Ventura County, EPA Zone 1.

Q: How much does radon mitigation cost in Ventura?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Ventura radon levels and find certified testing and mitigation professionals to keep your home safe

Ventura, CA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Ventura County, CA

Zip Code 93001

Ventura in Ventura County benefits from coastal marine sediments and relatively young geological formations that typically produce low radon levels throughout the Oxnard Metro region. However, with limited testing data available across zip codes 93001, 93003, and 93004, residents should still conduct radon testing to establish individual home baselines. The area's Mediterranean-style homes with concrete slab foundations and the county's coastal location generally contribute to lower radon accumulation potential.

Ventura, CA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon FAQ for Ventura, CA

What EPA Radon Zone is Ventura in?

Ventura and the 93001 zip code are in Ventura County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Ventura?

Radon mitigation in Ventura 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 Ventura?

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