Do You Really Need a Radon Test in Michigan? The Answer May Surprise You

When buying or selling a home in Michigan, most people think of inspections for roofs, foundations, or plumbing. But there’s one invisible threat that often gets overlooked: radon gas.

What Is Radon?

Radon is a naturally occurring, radioactive gas that is the result of the natural breakdown of uranium in soil, rock, and water. You can’t see, smell, or taste it—but it can seep into homes through cracks in the foundation, sump pumps, or gaps around pipes. Once inside, it can build up to dangerous levels, especially in enclosed spaces like basements.

Why Michigan Homes Are at Risk

Michigan's geology, with its high concentration of granite and glacial till, makes many areas prone to elevated radon levels. This is why the EPA has designated Michigan as a Zone 1 state, meaning it has the highest potential for elevated indoor radon levels. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) states that as many as one in four Michigan homes is expected to have radon levels above the federal action level.

Furthermore, Michigan's climate contributes to the problem. During our long, cold winters, homes are sealed up tightly, a phenomenon known as the "closed-house effect." This lack of ventilation allows radon gas to accumulate indoors, often reaching its highest levels during the winter months.

The Health Risk

Long-term exposure to radon is the second leading cause of lung cancer in the U.S., right behind smoking. The EPA and the Surgeon General estimate that radon is responsible for an estimated 21,000 lung cancer deaths each year. Even non-smokers can be at risk if they live in a home with elevated radon levels for many years. Because you can't detect it on your own, the only way to protect your family is through professional testing.

Why Testing Matters in Michigan Real Estate

• For Buyers: A radon test gives you peace of mind and could save you thousands in mitigation costs if high levels are discovered before you close.

• For Sellers: Providing radon test results upfront builds trust with buyers and can prevent last-minute negotiations or deal delays.

• For Homeowners: Even if you’re not planning to move, testing ensures your family isn’t being exposed to unsafe levels. The EPA recommends that all homes be tested for radon, regardless of age or location.

What Happens If Levels Are High?

If radon levels are found to be at or above the EPA's action level of 4.0 pCi/L, mitigation is a straightforward and effective solution. A certified radon mitigation system can be installed to safely vent the gas from beneath the house to the outside. This process is often completed in a single day and at a cost similar to other routine home improvements.

Michigan Inspections — We’re Your MI Guy!

At Michigan Inspections, we provide accurate, affordable radon testing across Metro Detroit and beyond. Our certified inspectors use advanced, continuous radon monitors to provide reliable results quickly, ensuring a smooth real estate transaction. We will deliver a clear report and walk you through what your results mean. If action is needed, we’ll point you toward trusted, certified mitigation professionals.

Don’t leave your family’s health up to chance. 📞 Contact us today to schedule your radon test!us today to schedule your radon test!