Alleghany, CA Radon Levels

Q: What EPA Radon Zone is Alleghany in?

Alleghany is in Sierra County, EPA Zone 2.

Q: How much does radon mitigation cost in Alleghany?

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

Check local Alleghany radon levels and find certified testing and mitigation professionals to keep your home safe

Alleghany, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Sierra County, CA

Zip Code 95910

Perched in Sierra County in California's northern Sierra Nevada foothills, Alleghany represents a historic gold mining community where granite and metamorphic bedrock generally produce lower radon levels. This mountain community in zip code 95910 features primarily older homes and cabins, many built on pier or partial basement foundations suited to the steep terrain. While radon testing data for Alleghany remains limited, the area's geological context suggests moderate radon potential, warranting periodic testing by homeowners.

Alleghany, CA Radon Mitigation

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

Need Radon Mitigation or Testing in Alleghany?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Sierra County Pros

1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

Radon FAQ for Alleghany, CA

What EPA Radon Zone is Alleghany in?

Alleghany and the 95910 zip code are in Sierra 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 Alleghany?

Radon mitigation in Alleghany 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 Alleghany?

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 in California with the most user-submitted radon test data, ranked by number of submissions.

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
Bishop	6.25 pCi/L	4
Oakland	5.00 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
Sacramento	4.33 pCi/L	3