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Kenmore, WA Radon Levels

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


Kenmore, WA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County King County, WA
Zip Code 98028

Situated in King County within the Seattle Metro area, Kenmore features predominantly post-1970s residential development along Lake Washington's northern shore. Though radon testing data for zip code 98028 is currently limited, the area's glacial soils over metamorphic bedrock can produce variable radon levels. Homeowners should test their properties, particularly those with basements or crawl spaces common in Pacific Northwest construction.

Kenmore, 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 Kenmore, WA

What EPA Radon Zone is Kenmore in?
Kenmore and the 98028 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 Kenmore?
Radon mitigation in Kenmore 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 Kenmore?
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.

CityAvg User Radon LevelSubmissions
Vancouver 6.56 pCi/L 9
Kent 3.50 pCi/L 6
Olympia 7.00 pCi/L 5
Seattle 5.25 pCi/L 4
Bellevue 3.75 pCi/L 4
Spokane 11.67 pCi/L 3
Camas 8.00 pCi/L 3
Centralia 7.00 pCi/L 3
Bellingham 4.50 pCi/L 2
Kirkland 4.50 pCi/L 2