Custer, MI Radon Mitigation and Testing

Q: What EPA Radon Zone is Custer in?

Custer is in Mason County, EPA Zone 3.

Q: How much does radon mitigation cost in Custer?

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

Mason County

EPA Zone 3

Situated in Mason County along Michigan's western shore, Custer sits on glacial deposits and dune sands near Lake Michigan that can affect radon gas movement. Limited testing data exists for this 49405 community, highlighting the need for professional radon assessments. The area's sandy soils and proximity to the Great Lakes can create unique radon accumulation patterns.

Custer, MI Radon Mitigation

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

Custer, MI Radon Testing

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

Custer Radon Facts

Key details about the radon risk profile for Custer and the 49405 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Mason County, MI

Zip Code

49405

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Custer and the 49405 zip code are located in Mason County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Custer, MI

What EPA Radon Zone is Custer in?

Custer and the 49405 zip code are in Mason County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Custer?

Radon mitigation in Custer 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 Custer?

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