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      San Lorenzo, CA Radon Levels

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

      San Lorenzo, CA Radon Facts

      EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
      County Alameda County, CA
      Zip Code 94580
      Avg. User Level 5.00 pCi/L
      User Tests 1

      Situated in Alameda County along the eastern San Francisco Bay shoreline, San Lorenzo sits on alluvial deposits over complex marine bedrock formations. Testing data from zip code 94580 reveals an average radon level of 5.0 pCi/L, which exceeds the EPA action level and indicates a need for mitigation consideration. The community's post-war housing developments, many featuring slab-on-grade and crawl space foundations, can experience significant radon accumulation despite the coastal location.

      5.00
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      San Lorenzo, CA Radon Mitigation

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

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      San Lorenzo, CA Radon Levels

      User-submitted radon test readings from homes in the San Lorenzo area.

      Radon LevelCityHome AgeFoundation
      5 pCi/L San Lorenzo, CA 51-99 Years No Basement/All Crawl Space

      Have a radon test result for San Lorenzo? Submit your reading to help other homeowners.

      Radon FAQ for San Lorenzo, CA

      What is the average radon level in San Lorenzo, CA?
      Based on 1 user-submitted test, the average radon level in San Lorenzo is 5.00 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 San Lorenzo in?
      San Lorenzo and the 94580 zip code are in Alameda 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 San Lorenzo?
      Radon mitigation in San Lorenzo 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 San Lorenzo?
      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