Brisbane, CA Radon Levels

Q: What EPA Radon Zone is Brisbane in?

Brisbane is in San Mateo County, EPA Zone 2.

Q: How much does radon mitigation cost in Brisbane?

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

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

Brisbane, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County San Mateo County, CA

Zip Code 94005

Situated in San Mateo County within the San Francisco Metro area, Brisbane's position on California's coastal geological formations typically produces lower radon levels, though individual properties can still show variation. The city's housing includes both older hillside homes and modern developments, many built on slab foundations or with minimal below-grade space. While radon testing data for zip code 94005 is limited, homeowners should still test their properties to establish baseline readings, particularly in hillside locations where geological conditions may differ.

Brisbane, 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 Brisbane, CA

What EPA Radon Zone is Brisbane in?

Brisbane and the 94005 zip code are in San Mateo 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 Brisbane?

Radon mitigation in Brisbane 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 Brisbane?

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