Durham, CA Radon Levels

Q: What EPA Radon Zone is Durham in?

Durham is in Butte County, EPA Zone 3.

Q: How much does radon mitigation cost in Durham?

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

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

Durham, CA Radon Facts

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

County Butte County, CA

Zip Code 95938

Located in Butte County within the Chico Metro area of California's Central Valley, Durham sits on alluvial deposits and volcanic soils that typically produce lower radon levels. The community's agricultural setting in zip code 95938 features primarily ranch-style homes and rural properties with slab-on-grade and crawl space foundations. While local radon testing data is currently unavailable, California's generally lower radon potential suggests most properties will test within acceptable ranges, though testing provides valuable confirmation.

Durham, 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 Durham, CA

What EPA Radon Zone is Durham in?

Durham and the 95938 zip code are in Butte 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 Durham?

Radon mitigation in Durham 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 Durham?

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