Located in southwestern New Hampshire's Cheshire County, Keene sits in a valley surrounded by granite hills that contribute to regional radon production. The city's average radon level of 5.0 pCi/L exceeds the EPA action level of 4.0 pCi/L. With its mix of historic homes and newer construction in zip code 03431, residents should prioritize radon testing and mitigation when necessary.
5.00
pCi/L average
Above EPA Action Level
Based on 1 user-submitted radon test for homes in Keene, NH. The EPA recommends taking action at or above 4.0 pCi/L.
0
4.0 EPA
10+
Keene, NH Radon Mitigation
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User-submitted radon test readings from homes in the Keene area.
Radon Level
City
Home Age
Foundation
5 pCi/L
Keene, NH
21-50 Years
Full Basement
Have a radon test result for Keene? Submit your reading to help other homeowners.
Radon FAQ for Keene, NH
What is the average radon level in Keene, NH?
Based on 1 user-submitted test, the average radon level in Keene 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 Keene in?
Keene and the 03431 zip code are in Cheshire 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 Keene?
Radon mitigation in Keene 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 Keene?
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 New Hampshire
Cities in New Hampshire with the most user-submitted radon test data, ranked by number of submissions.
