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Lompoc, CA Radon Levels

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


Lompoc, CA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Santa Barbara County, CA
Zip Code 93436

Set in the Lompoc Valley of Santa Barbara County, this community sits on marine terraces and sedimentary deposits that generally produce lower radon potential. However, radon testing data remains limited for both the 93436 and 93437 areas, making individual testing recommended for homeowners. The valley's unique microclimate and geological setting within the Santa Maria Metro can still produce variable radon conditions between properties.

Lompoc, CA Radon Mitigation

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

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Radon FAQ for Lompoc, CA

What EPA Radon Zone is Lompoc in?
Lompoc and the 93436 zip code are in Santa Barbara County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Lompoc?
Radon mitigation in Lompoc 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 Lompoc?
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.

CityAvg User Radon LevelSubmissions
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