Redondo, WA Radon Levels
Check local Redondo radon levels and find certified testing and mitigation professionals to keep your home safe
Redondo, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
King County, WA
Zip Code
98054
This King County community sits within the Seattle metropolitan region, where glacial till and marine deposits create variable radon conditions. Testing data remains limited for zip code 98054, making individual home testing crucial for residents. Many homes in this area feature basements or daylight basements that can concentrate radon gas, particularly in older construction.
Redondo, WA 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 Redondo, WA
What EPA Radon Zone is Redondo in?
Redondo and the 98054 zip code are in King 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 Redondo?
Radon mitigation in Redondo 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 Redondo?
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 Washington
Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.