Gilroy, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Gilroy in?

Gilroy is in Santa Clara County, EPA Zone 2.

Q: How much does radon mitigation cost in Gilroy?

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

Santa Clara County

EPA Zone 2

Situated in Santa Clara County at the southern edge of Silicon Valley, Gilroy lies in the Santa Clara Valley over sedimentary and volcanic formations. Housing in zip code 95020 ranges from historic agricultural properties to modern subdivisions, predominantly built on slab foundations typical of California construction. While testing data is currently limited, homeowners in this EPA Zone 2 area should consider radon testing as geological conditions can vary significantly.

Gilroy, CA Radon Mitigation

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

Gilroy, CA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Gilroy Radon Facts

Key details about the radon risk profile for Gilroy and the 95020 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Santa Clara County, CA

Zip Code

95020

Predicted Screening Level

2–4 pCi/L (Zone 2)

Gilroy and the 95020 zip code are located in Santa Clara County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Gilroy, CA

What EPA Radon Zone is Gilroy in?

Gilroy and the 95020 zip code are in Santa Clara 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 Gilroy?

Radon mitigation in Gilroy 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 Gilroy?

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 with the most user-submitted radon test data in the state.

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
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Bishop	5.67 pCi/L	3
Sacramento	4.33 pCi/L	3
Oakland	3.33 pCi/L	3
Fresno	10.00 pCi/L	2
Davis	8.00 pCi/L	2
Palo Alto	6.50 pCi/L	2
Studio City	6.50 pCi/L	2
Menlo Park	5.00 pCi/L	2
Truckee	5.00 pCi/L	2
Walnut Creek	4.00 pCi/L	2
San Diego	3.50 pCi/L	2
San Francisco	3.50 pCi/L	2
Belmont	20.00 pCi/L	1