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      Seal Beach, CA Radon Levels

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

      Seal Beach, CA Radon Facts

      EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
      County Orange County, CA
      Zip Code 90740
      Avg. User Level 4.00 pCi/L
      User Tests 1

      This coastal Orange County community in the Los Angeles Metro area has recorded an average radon level of 4.0 pCi/L based on available testing data. Located in EPA Zone 3 along California's coast, Seal Beach sits right at the EPA's recommended action threshold, making continued monitoring important for residents in the 90740 zip code. Even coastal properties with typically lower radon potential can reach levels requiring mitigation consideration.

      4.00
      pCi/L average
      Above EPA Action Level

      Based on 1 user-submitted radon test for homes in Seal Beach, CA. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Seal Beach, CA Radon Mitigation

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

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      Seal Beach, CA Radon Levels

      User-submitted radon test readings from homes in the Seal Beach area.

      Radon LevelCityHome AgeFoundation
      4 pCi/L Seal Beach, CA 51-99 Years No Basement/All Slab

      Have a radon test result for Seal Beach? Submit your reading to help other homeowners.

      Radon FAQ for Seal Beach, CA

      What is the average radon level in Seal Beach, CA?
      Based on 1 user-submitted test, the average radon level in Seal Beach is 4.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
      What EPA Radon Zone is Seal Beach in?
      Seal Beach and the 90740 zip code are in Orange County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
      How much does radon mitigation cost in Seal Beach?
      Radon mitigation in Seal Beach 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 Seal Beach?
      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

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578

      A licensed contractor will contact you immediately.

      * Required