Oak Harbor, WA Radon Levels
Check local Oak Harbor radon levels and find certified testing and mitigation professionals to keep your home safe
Oak Harbor, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Island County, WA
Zip Code
98277
Located on Whidbey Island in Island County, Oak Harbor sits within EPA Zone 3, where marine sediments and volcanic geology typically result in lower radon levels. Testing data remains limited for the 98277 zip code area, so homeowners should still test their properties to establish individual baseline readings.
Oak Harbor, WA Radon Mitigation
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Radon FAQ for Oak Harbor, WA
What EPA Radon Zone is Oak Harbor in?
Oak Harbor and the 98277 zip code are in Island 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 Oak Harbor?
Radon mitigation in Oak Harbor 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 Oak Harbor?
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
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