Cambria, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Cambria in?

Cambria is in San Luis Obispo County, EPA Zone 2.

Q: How much does radon mitigation cost in Cambria?

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

San Luis Obispo County

EPA Zone 2

Perched along California's central coast in San Luis Obispo County, Cambria sits on marine terraces above the Pacific Ocean within the San Luis Obispo Metro area. The community's housing includes coastal cottages and vacation homes, many built on the area's characteristic sedimentary formations. With limited radon testing data available for the 93428 zip code, residents should consider testing since geological variations can occur even in typically lower-risk coastal areas.

Cambria, CA Radon Mitigation

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

Cambria, CA Radon Testing

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

Cambria Radon Facts

Key details about the radon risk profile for Cambria and the 93428 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

San Luis Obispo County, CA

Zip Code

93428

Predicted Screening Level

2–4 pCi/L (Zone 2)

Cambria and the 93428 zip code are located in San Luis Obispo 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 Cambria, CA

What EPA Radon Zone is Cambria in?

Cambria and the 93428 zip code are in San Luis Obispo 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 Cambria?

Radon mitigation in Cambria 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 Cambria?

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