This house for sale was found to have high radon levels. Radon gas is found all over the state of Michigan and throughout the world, and is in the air we breathe outside. We installed a radon mitigation system in this house located near the lakeshore of Lake Michigan, in Grand Haven. This radon system was installed up into the garage attic space where it’s hidden from view, unlike many exterior radon systems that are often visible from the outside.