Oceanside, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Oceanside in?

Oceanside is in San Diego County, EPA Zone 3.

Q: How much does radon mitigation cost in Oceanside?

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

San Diego County

EPA Zone 3

Located in San Diego County along Southern California's coast, Oceanside sits on marine terrace formations and coastal sediments that typically produce lower radon levels. The city's housing stock includes everything from beach cottages to suburban developments, with many homes built on slab foundations. With testing data limited for the 92054 area, residents should still test to determine individual property radon levels.

Oceanside, CA Radon Mitigation

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

Oceanside, CA Radon Testing

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

Oceanside Radon Facts

Key details about the radon risk profile for Oceanside and the 92054 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

San Diego County, CA

Zip Code

92054

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Oceanside and the 92054 zip code are located in San Diego 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 Oceanside, CA

What EPA Radon Zone is Oceanside in?

Oceanside and the 92054 zip code are in San Diego 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 Oceanside?

Radon mitigation in Oceanside 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 Oceanside?

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