Portola, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Portola in?

Portola is in Plumas County, EPA Zone 2.

Q: How much does radon mitigation cost in Portola?

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

Plumas County

EPA Zone 2

High in the Sierra Nevada mountains, this Plumas County community sits on granitic and volcanic soils at elevation. Radon testing data is currently unavailable for zip code 96122, though the area's granite-based geology can produce variable radon levels. Mountain homes often feature unique foundation types including partial basements and raised foundations that require specialized testing approaches.

Portola, CA Radon Mitigation

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

Portola, CA Radon Testing

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

Portola Radon Facts

Key details about the radon risk profile for Portola and the 96122 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Plumas County, CA

Zip Code

96122

Predicted Screening Level

2–4 pCi/L (Zone 2)

Portola and the 96122 zip code are located in Plumas 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 Portola, CA

What EPA Radon Zone is Portola in?

Portola and the 96122 zip code are in Plumas 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 Portola?

Radon mitigation in Portola 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 Portola?

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