Jamestown, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Jamestown in?

Jamestown is in Tuolumne County, EPA Zone 2.

Q: How much does radon mitigation cost in Jamestown?

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

Tuolumne County

EPA Zone 2

Jamestown is situated in Tuolumne County, California (zip code 95327), where Sierra Nevada foothills geology contributes to EPA Zone 2 radon potential. Testing data for this historic Gold Country community remains limited, though the area's varied foundation types and granite-influenced geology warrant individual home assessment. The region's mix of older mining-era structures and newer construction presents different radon accumulation risks for residents.

Jamestown, CA Radon Mitigation

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

Jamestown, CA Radon Testing

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

Jamestown Radon Facts

Key details about the radon risk profile for Jamestown and the 95327 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Tuolumne County, CA

Zip Code

95327

Predicted Screening Level

2–4 pCi/L (Zone 2)

Jamestown and the 95327 zip code are located in Tuolumne 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 Jamestown, CA

What EPA Radon Zone is Jamestown in?

Jamestown and the 95327 zip code are in Tuolumne 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 Jamestown?

Radon mitigation in Jamestown 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 Jamestown?

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