Comptche, CA Radon Levels

Q: What EPA Radon Zone is Comptche in?

Comptche is in Mendocino County, EPA Zone 3.

Q: How much does radon mitigation cost in Comptche?

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

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

Comptche, CA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Mendocino County, CA

Zip Code 95427

Hidden in Mendocino County's coastal mountains, Comptche sits over the Franciscan Complex rock formations that can contain uranium-bearing minerals contributing to radon production. The rural community's housing includes older homes, cabins, and vineyard properties, many with varied foundation types adapted to the hilly terrain. With radon testing data for zip code 95427 currently unavailable, property owners should consider professional testing, as California's complex geology can create unexpected radon hotspots.

Comptche, 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 Comptche, CA

What EPA Radon Zone is Comptche in?

Comptche and the 95427 zip code are in Mendocino 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 Comptche?

Radon mitigation in Comptche 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 Comptche?

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