Hollister, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Hollister in?

Hollister is in San Benito County, EPA Zone 2.

Q: How much does radon mitigation cost in Hollister?

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

San Benito County

EPA Zone 2

Located in San Benito County within the San Jose Metro area, Hollister sits in California's Central Valley where sedimentary formations and fault systems influence local geology. While radon testing data for zip code 95023 remains limited, residents should still conduct home testing as California's diverse geological conditions can produce unexpected results. The area's predominantly slab-on-grade construction and Mediterranean-style homes reflect building practices adapted to seismic considerations.

Hollister, CA Radon Mitigation

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

Hollister, CA Radon Testing

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

Hollister Radon Facts

Key details about the radon risk profile for Hollister and the 95023 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

San Benito County, CA

Zip Code

95023

Predicted Screening Level

2–4 pCi/L (Zone 2)

Hollister and the 95023 zip code are located in San Benito 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 Hollister, CA

What EPA Radon Zone is Hollister in?

Hollister and the 95023 zip code are in San Benito 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 Hollister?

Radon mitigation in Hollister 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 Hollister?

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