Markleeville, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Markleeville in?

Markleeville is in Alpine County, EPA Zone 2.

Q: How much does radon mitigation cost in Markleeville?

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

Alpine County

EPA Zone 2

Situated in Alpine County high in the Sierra Nevada mountains, Markleeville's unique geological setting includes granitic bedrock and volcanic formations that can influence radon levels in unexpected ways. The area's mix of seasonal cabins and year-round residences, many built on crawl spaces or slab foundations due to challenging terrain, requires specific attention to radon testing protocols. Without comprehensive testing data available for zip code 96120, mountain residents should conduct professional radon assessments to ensure safe indoor air quality.

Markleeville, CA Radon Mitigation

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

Markleeville, CA Radon Testing

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

Markleeville Radon Facts

Key details about the radon risk profile for Markleeville and the 96120 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Alpine County, CA

Zip Code

96120

Predicted Screening Level

2–4 pCi/L (Zone 2)

Markleeville and the 96120 zip code are located in Alpine 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 Markleeville, CA

What EPA Radon Zone is Markleeville in?

Markleeville and the 96120 zip code are in Alpine 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 Markleeville?

Radon mitigation in Markleeville 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 Markleeville?

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