Grafton, NH resides in Grafton 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. Testing is recommended for all homes in the 03240 zip code area.
Grafton, NH Radon Mitigation
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Grafton, NH Radon Testing
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Grafton Radon Facts
Key details about the radon risk profile for Grafton and the 03240 zip code area.
EPA Radon Zone
Zone 2 — Moderate Risk
County
Grafton County, NH
Zip Code
03240
Predicted Screening Level
2–4 pCi/L (Zone 2)
Grafton and the 03240 zip code are located in Grafton County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Grafton, NH
What EPA Radon Zone is Grafton in?
Grafton and the 03240 zip code are in Grafton 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 Grafton?
Radon mitigation in Grafton 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 Grafton?
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.
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