Deer Isle, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Deer Isle in?

Deer Isle is in Hancock County, EPA Zone 1.

Q: How much does radon mitigation cost in Deer Isle?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Hancock County

EPA Zone 1

Positioned in Hancock County on Maine's rugged Penobscot Bay coast, Deer Isle sits in EPA Zone 1 where New England's granite bedrock can produce elevated radon levels. The island's unique coastal geology and mix of seasonal and year-round homes create variable conditions for radon accumulation. Since comprehensive testing data for zip code 04627 is limited, island residents should prioritize radon testing, especially given the zone's high-risk classification.

Deer Isle, ME Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Deer Isle, ME Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Deer Isle Radon Facts

Key details about the radon risk profile for Deer Isle and the 04627 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Hancock County, ME

Zip Code

04627

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Deer Isle and the 04627 zip code are located in Hancock County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Deer Isle, ME

What EPA Radon Zone is Deer Isle in?

Deer Isle and the 04627 zip code are in Hancock County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Deer Isle?

Radon mitigation in Deer Isle 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 Deer Isle?

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 Maine

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Rumford	5.67 pCi/L	3
York	8.50 pCi/L	2
Saco	7.50 pCi/L	2
Hampden	4.50 pCi/L	2
Scarborough	14.00 pCi/L	1
Kittery	12.00 pCi/L	1
South Portland	10.00 pCi/L	1
Portland	4.00 pCi/L	1