Call For A Free Quote: 1-800-299-3578 (toll free)

      Sunnyvale, CA Radon Levels

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

      Sunnyvale, CA Radon Facts

      EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
      County Santa Clara County, CA
      Zip Code 94085
      Avg. User Level 3.00 pCi/L
      User Tests 1

      Sunnyvale in Santa Clara County shows an average radon level of 3.0 pCi/L, which falls within EPA's acceptable range but still warrants regular testing. The city's location in the San Jose Metro area, built primarily on Bay Area alluvial plains over marine sediments, typically produces moderate radon readings. With many homes featuring slab-on-grade foundations common to Silicon Valley construction, radon can still accumulate in enclosed spaces.

      3.00
      pCi/L average
      Below EPA Action Level

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

      0
      4.0 EPA
      10+

      Sunnyvale, 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 Sunnyvale?

      • 100% Free, No-Obligation Quotes
      • Matches You with State-Licensed Santa Clara County Pros
      1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

      Sunnyvale, CA Radon Levels

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

      Radon LevelCityHome AgeFoundation
      3 pCi/L Sunnyvale, CA 51-99 Years No Basement/All Crawl Space

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

      Radon FAQ for Sunnyvale, CA

      What is the average radon level in Sunnyvale, CA?
      Based on 1 user-submitted test, the average radon level in Sunnyvale is 3.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.
      What EPA Radon Zone is Sunnyvale in?
      Sunnyvale and the 94085 zip code are in Santa Clara 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 Sunnyvale?
      Radon mitigation in Sunnyvale 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 Sunnyvale?
      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

      Free Radon Mitigation Quote

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

      A licensed contractor will contact you immediately.

      * Required

      Free Radon Mitigation Quote

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

      A licensed contractor will contact you immediately.

      * Required