Westwood, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Westwood in?

Westwood is in Lassen County, EPA Zone 3.

Q: How much does radon mitigation cost in Westwood?

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

Lassen County

EPA Zone 3

Remote Lassen County's Westwood lies in northeastern California's volcanic terrain, where radon testing data remains sparse. The area's volcanic soils and high-elevation setting in zip code 96137 can create unique radon conditions that vary significantly by location. Given the limited testing information available, homeowners should conduct professional radon assessments to understand their specific risk levels.

Westwood, CA Radon Mitigation

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

Westwood, CA Radon Testing

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

Westwood Radon Facts

Key details about the radon risk profile for Westwood and the 96137 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Lassen County, CA

Zip Code

96137

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Westwood and the 96137 zip code are located in Lassen County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Westwood, CA

What EPA Radon Zone is Westwood in?

Westwood and the 96137 zip code are in Lassen 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 Westwood?

Radon mitigation in Westwood 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 Westwood?

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