Positioned in Hillsborough County within the Manchester Metro area, Hollis sits on New England's granite bedrock where glacial deposits influence radon potential. While specific testing data for zip code 03049 is currently unavailable, the region's geological characteristics suggest homeowners should conduct radon testing. The community's mix of colonial-era homes and modern construction represents diverse foundation types that may require different mitigation approaches if elevated levels are detected.
Hollis, NH Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Hollis, NH Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Hollis Radon Facts
Key details about the radon risk profile for Hollis and the 03049 zip code area.
EPA Radon Zone
Zone 2 — Moderate Risk
County
Hillsborough County, NH
Zip Code
03049
Predicted Screening Level
2–4 pCi/L (Zone 2)
Hollis and the 03049 zip code are located in Hillsborough 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 Hollis, NH
What EPA Radon Zone is Hollis in?
Hollis and the 03049 zip code are in Hillsborough 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 Hollis?
Radon mitigation in Hollis 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 Hollis?
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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Cities with the most user-submitted radon test data in the state.
