Angelus Oaks, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Angelus Oaks in?

Angelus Oaks is in San Bernardino County, EPA Zone 2.

Q: How much does radon mitigation cost in Angelus Oaks?

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

San Bernardino County

EPA Zone 2

Perched high in San Bernardino County within the Riverside Metro area, Angelus Oaks sits at significant elevation where granite bedrock and thin mountain soils can influence radon accumulation patterns. Mountain cabin construction and seasonal housing often feature unique foundation approaches adapted to the steep terrain and seasonal access. Given limited testing data for zip code 92305, residents should consider professional radon assessment, particularly for homes with enclosed lower levels or basement spaces.

Angelus Oaks, CA Radon Mitigation

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

Angelus Oaks, CA Radon Testing

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

Angelus Oaks Radon Facts

Key details about the radon risk profile for Angelus Oaks and the 92305 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

San Bernardino County, CA

Zip Code

92305

Predicted Screening Level

2–4 pCi/L (Zone 2)

Angelus Oaks and the 92305 zip code are located in San Bernardino 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 Angelus Oaks, CA

What EPA Radon Zone is Angelus Oaks in?

Angelus Oaks and the 92305 zip code are in San Bernardino 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 Angelus Oaks?

Radon mitigation in Angelus Oaks 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 Angelus Oaks?

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