Allen, MI Radon Mitigation and Testing

Q: What EPA Radon Zone is Allen in?

Allen is in Hillsdale County, EPA Zone 1.

Q: How much does radon mitigation cost in Allen?

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

Hillsdale County

EPA Zone 1

Located in Hillsdale County in southern Michigan's rural landscape, Allen sits within glacial till deposits over limestone bedrock that contribute to elevated radon potential across the region. This small agricultural community in zip code 49227 features predominantly older farmhouses and rural homes, many with full or partial basements typical of Michigan construction. With Michigan's Zone 1 radon designation and limited local testing data, homeowners should prioritize radon testing to ensure safe indoor air quality.

Allen, MI Radon Mitigation

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

Allen, MI Radon Testing

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

Allen Radon Facts

Key details about the radon risk profile for Allen and the 49227 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Hillsdale County, MI

Zip Code

49227

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Allen and the 49227 zip code are located in Hillsdale 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 Allen, MI

What EPA Radon Zone is Allen in?

Allen and the 49227 zip code are in Hillsdale 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 Allen?

Radon mitigation in Allen 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 Allen?

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 Michigan

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

City	Avg User Radon Level	Submissions
Novi	5.00 pCi/L	7
Rochester	9.00 pCi/L	5
Battle Creek	6.60 pCi/L	5
White Lake	10.00 pCi/L	4
Ypsilanti	8.50 pCi/L	4
Waterford	7.75 pCi/L	4
Howell	7.50 pCi/L	4
Gaylord	6.00 pCi/L	4
Gladstone	5.25 pCi/L	4
West Bloomfield	5.25 pCi/L	4
Clarkston	5.00 pCi/L	4
Flint	9.00 pCi/L	3
Pinckney	7.33 pCi/L	3
Northville	5.33 pCi/L	3
Milford	4.33 pCi/L	3
Plymouth	4.33 pCi/L	3
Portage	3.33 pCi/L	3
Lake Orion	11.00 pCi/L	2
Oxford	11.00 pCi/L	2
Grand Ledge	7.00 pCi/L	2