Carmel, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Carmel in?

Carmel is in Monterey County, EPA Zone 2.

Q: How much does radon mitigation cost in Carmel?

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

Monterey County

EPA Zone 2

The famous coastal community of Carmel sits in Monterey County on marine terraces and granitic bedrock that typically produce lower radon levels along California's coast. Testing data for zip codes 93921 and 93923 within the Salinas metro area remains limited. While coastal California generally shows lower radon risk, individual testing provides the most reliable assessment for this area's diverse housing stock.

Carmel, CA Radon Mitigation

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

Carmel, CA Radon Testing

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

Carmel Radon Facts

Key details about the radon risk profile for Carmel and the 93923 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Monterey County, CA

Zip Code

93923

Predicted Screening Level

2–4 pCi/L (Zone 2)

Carmel and the 93923 zip code are located in Monterey 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 Carmel, CA

What EPA Radon Zone is Carmel in?

Carmel and the 93923 zip code are in Monterey 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 Carmel?

Radon mitigation in Carmel 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 Carmel?

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