Holden, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Holden in?

Holden is in Hancock County, EPA Zone 1.

Q: How much does radon mitigation cost in Holden?

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

Located in Hancock County within the Bangor Metro area, Holden's residential properties sit on Maine's typical granitic bedrock covered by glacial deposits, conditions known for potential radon accumulation. Testing data remains limited for this community in zip code 04429, making individual radon testing essential for homeowners to assess their specific risk levels.

Holden, ME Radon Mitigation

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

Holden, ME Radon Testing

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

Holden Radon Facts

Key details about the radon risk profile for Holden and the 04429 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Hancock County, ME

Zip Code

04429

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Holden and the 04429 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 Holden, ME

What EPA Radon Zone is Holden in?

Holden and the 04429 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 Holden?

Radon mitigation in Holden 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 Holden?

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