There is a radioactive gas that moves silently through the soil beneath homes across Southwest Michigan and Northwest Indiana, entering through foundation cracks, sump pits, and floor drains without producing any smell, color, or detectable sensation. Long-term exposure to elevated concentrations of this gas, radon, is the second leading cause of lung cancer in the United States, responsible for an estimated 21,000 deaths each year according to the EPA. Radon testing in Michigan is not a niche concern for unusual properties. It is a practical, affordable step that every homebuyer and homeowner in the Michiana region should take seriously. Smart Choice Inspection Company holds an Indiana Radon License and provides radon testing throughout the Southwest Michigan and Northwest Indiana service area, offering buyers and homeowners the documentation and peace of mind they need.

Why Michigan and Indiana Have Meaningful Radon Risk

Radon forms from the natural breakdown of uranium in soil and rock. It migrates upward through the ground and enters structures through any pathway between the soil and the interior: cracks in foundation walls and floor slabs, the gap at the floor-wall joint, openings around pipes and utility conduits, sump pits, and crawlspace openings. Once inside, it accumulates in the lower levels of the home and can reach concentrations well above the EPA’s action level of 4 picocuries per liter.

Michigan and Indiana both appear in the EPA’s zone mapping as states with meaningful radon potential across significant portions of their geography. The Michigan Department of Health and Human Services and the Indiana State Department of Health both identify radon as a public health concern and recommend testing for all homes. Testing data from both states shows that a substantial percentage of homes exceed the EPA action level, with some areas of Southwest Michigan and Northwest Indiana seeing elevated readings more frequently than regional averages might suggest.

The geology of the Michiana region plays a role. The glacially deposited soils and bedrock formations beneath Southwest Michigan and Northwest Indiana contain uranium-bearing minerals that contribute to radon production, and the region’s prevalent basement construction provides a natural collection point for the gas before it disperses into living areas above.

Basements, Crawlspaces, and Radon in Michiana Homes

The prevalence of basements in Southwest Michigan and Northwest Indiana homes is both a practical and architectural feature of the region, and it is directly relevant to radon risk. Basements sit in direct contact with the soil and have the greatest concentration of potential radon entry points: floor-wall joints, slab cracks, utility penetrations, sump pits, and in many cases open crawlspace areas connected to the basement. Without adequate ventilation and pressure mitigation, radon entering through these pathways accumulates in the basement and migrates upward into living spaces.

Homes with finished basements used as living areas, bedrooms, or home offices are at the highest exposure risk because occupants spend significant time in the lower levels where radon concentrations are greatest. Even homes where the basement is primarily used for storage or mechanical systems benefit from testing, as radon that accumulates in the basement will continue to migrate to the floors above.

Homes on crawlspaces are also at meaningful risk. Open crawlspaces without vapor barriers and adequate ventilation allow soil gas to enter the subfloor assembly and move into the home above.

What Radon Testing in Michigan Involves

Radon testing is straightforward, non-invasive, and produces results that give homeowners and buyers a specific, documented measurement of their home’s radon level. Smart Choice Inspection Company offers radon testing as an add-on to any home inspection or as a standalone service, making it easy to integrate into the real estate transaction process.

For buyers, the standard approach is a short-term test running two to seven days. A testing device is placed in the lowest livable level of the home, and the home is maintained in closed-house conditions during the testing period. Results are reported as a specific concentration in picocuries per liter, compared against the EPA action level of 4 pCi/L. With Indiana Radon License RTP01250, Smart Choice Inspection Company meets the professional licensing standards for radon testing in Indiana and brings the same expertise and rigor to Michigan properties.

What Elevated Radon Levels Mean and What to Do About Them

A radon test result at or above 4 pCi/L is not a reason to abandon a purchase or feel alarmed about your current home. Radon mitigation is an established, highly effective field with solutions that are well within the reach of most homeowners.

The most common mitigation approach is sub-slab depressurization, which installs a pipe through the foundation slab or into the crawlspace and uses a fan to draw radon from beneath the home and vent it to the exterior before it can enter the living space. These systems are typically installed in a day, reduce radon levels by up to 99 percent, and require minimal ongoing maintenance. They are a one-time solution to a persistent geological condition.

In a real estate transaction, documented radon test results above the action level provide buyers with a concrete, factual basis for requesting mitigation before closing or negotiating a credit toward installation costs. Having professional test documentation rather than a verbal representation is essential for this negotiation.

Radon Testing for Current Michiana Homeowners

Buyers are not the only ones who benefit from testing. The EPA recommends that all homeowners test their homes for radon, and that testing be repeated every two years or after any significant renovation that alters the foundation or lower level of the home. For Michiana homeowners who have never tested, who purchased their home without radon testing, or who have made changes to finished basement spaces, scheduling a test is a straightforward step toward understanding and protecting indoor air quality.

Frequently Asked Questions About Radon Testing in Michigan

Is radon really a concern in Southwest Michigan and Northwest Indiana? Yes. Both Michigan and Indiana have documented radon risk across significant portions of their geography. The EPA, MDHHS, and Indiana State Department of Health all recommend testing for all homes. Short-term testing data from the region shows a meaningful percentage of homes exceeding the EPA action level of 4 pCi/L.

What is the EPA action level for radon and what does it mean? The EPA action level is 4 picocuries per liter (pCi/L). At or above this concentration, the EPA recommends mitigation to reduce exposure. Levels between 2 and 4 pCi/L also warrant consideration of mitigation, as no level of radon exposure is completely risk-free.

Is Smart Choice Inspection Company licensed to perform radon testing? Yes. Smart Choice Inspection Company holds Indiana Radon License RTP01250, meeting the state licensing requirements for professional radon testing in Indiana. The company brings the same professional standards to radon testing in Michigan and throughout the Michiana service area.

Does a home inspection include radon testing? A standard home inspection does not include radon testing. Radon testing is a separate service requiring its own equipment and process. Smart Choice Inspection Company offers radon testing as a convenient add-on to any home inspection or as a standalone service.

How long does a radon test take? Short-term radon tests run between two and seven days. The home is maintained in closed-house conditions during the test. Results are delivered promptly after the testing device is retrieved and analyzed.

What should I do if my radon test result is above the action level? A result at or above 4 pCi/L calls for professional mitigation. Sub-slab depressurization is the most common and reliable approach, typically installed in a single day and capable of reducing radon levels by up to 99 percent. In a real estate transaction, documented results support negotiation with the seller for mitigation before closing.

Radon cannot be seen or smelled, but it can be measured, and once measured it can be addressed. Smart Choice Inspection Company provides licensed radon testing in Michigan and Indiana for buyers and homeowners throughout the Southwest Michigan and Northwest Indiana service area. Schedule your inspection today and find out the radon level in your home.