If testing reveals elevated levels of radon, installing a mitigation system is a highly effective way to reduce the threat. However, there are no federal or state laws requiring homeowners to do so.
5. Home Sellers Must Disclose the Presence of Radon
The Minnesota Radon Awareness Act requires homeowners to disclose any knowledge of radon concentrations in writing to any potential buyer.
What You Need to Know About Radon Testing and Mitigation
Testers must be licensed
As of January 2019, a new Minnesota law required all professional radon testers to get a state license and abide by stringent testing guidelines.
What happens during a professional radon test?
The Minnesota Radon Licensing Act requires radon-testing professionals “to produce accurate, defensible, and reproducible test results.” For the most precise reading, separate tests are performed for each unique foundation type on your property:
- Slab-on-grade spaces below enclosed porch
- Other areas as required
Radon testers also must produce detailed reports about the type of equipment used, specifics about testing locations, internal and external environmental conditions during the test, and other factors.
How much does a radon mitigation system cost?
When dangerous levels are discovered, MNDOH highly recommends installing a radon-mitigation system. These systems cost from $1,200 to $2,500 and can be installed by one of the nationally certified radon-mitigation professionals listed on MNDOH’s Radon Service Providers page.
To learn more, visit the Radon page on the MNDOH website.