Radon Mitigation in
Maple Grove, Minnesota
NRPP-certified, EPA-trained radon mitigation serving Maple Grove and Hennepin County. Family-owned since 2014. Free estimates. 5-year written warranty.
Radon Risk in Maple Grove & Hennepin County
Minnesota consistently ranks among the highest-radon states in the country. The Minnesota Department of Health estimates that approximately 2 in 5 Minnesota homes have radon levels above the EPA action level of 4 pCi/L — and Hennepin County is no exception.
Radon is a naturally occurring radioactive gas that seeps into homes from the soil and bedrock beneath your foundation. It's colorless, odorless, and tasteless — impossible to detect without testing. Long-term exposure is the second leading cause of lung cancer in the United States, responsible for about 21,000 deaths per year.
If you haven't tested your Maple Grove home, or if results came back above 4 pCi/L, the EPA recommends mitigation. Radon Stoppers can typically reduce levels below 2 pCi/L — often down to 1 pCi/L or less.
Radon Mitigation Services in Maple Grove
Sub-Slab Depressurization
Most common and effective method. A pipe draws radon from beneath your foundation before it enters your home.
Crawlspace Encapsulation
Heavy-duty vapor barrier plus active depressurization to control radon entry through exposed soil.
Real Estate Services
Fast turnaround for buyers and sellers. Mitigation installed and verified before closing.
System Repairs & Fan Replacement
Existing system not performing? We diagnose and repair or upgrade any brand of mitigation system.
Not sure which service you need? See our full services page or call 763-222-9562.
Certified, Experienced, Local
Serving Maple Grove and Surrounding Communities
Based in Monticello, we serve Maple Grove and the surrounding Hennepin County area — typically reaching your home within the same week you call.
We also serve nearby communities including:
Don't see your city? View our full service area or call to confirm coverage.
Our Process
1. Free Estimate
We assess your home, review any test results, and provide a transparent written quote — no pressure.
2. Custom Installation
We design and install the right system for your home's foundation type. Most installs complete in one day.
3. Post-Install Testing
We re-test after installation to confirm your radon levels are well below 4 pCi/L.
4. 5-Year Warranty
Your system is backed by a written 5-year warranty. We stand behind our work.
Maple Grove's Growth Boom Left Many Basements Untested for Radon
Maple Grove expanded rapidly through the 1980s, 1990s, and 2000s, and much of that housing stock is now at the age where foundation settling, minor cracks, and aging sealants create radon entry points. Hennepin County homes -- including those in Maple Grove -- face the same elevated radon risk as much of the Twin Cities Metro. The Minnesota Department of Health consistently finds that roughly 2 in 5 Minnesota homes test above the EPA action level of 4 pCi/L, and suburban Hennepin County is no different.
Large homes with full walkout basements are common throughout Maple Grove's neighborhoods, and walkout basements can present unique mitigation challenges. Radon Stoppers, LLC has experience with the full range of Twin Cities Metro foundation types -- from exposed slab walkouts to block-wall and poured concrete basements -- and designs systems accordingly. We don't use a one-size-fits-all approach; every home gets assessed before we quote.
Homeowners in Maple Grove often ask whether their home's radon-resistant new construction features are enough. In many cases, homes built with passive radon systems still need an active fan to bring levels down consistently. We test existing passive systems, and if levels are still elevated, adding a fan is typically a straightforward upgrade.
Radon Mitigation FAQs for Maple Grove
Do Maple Grove homes typically have radon problems?
Maple Grove is in Hennepin County, which has the same elevated radon risk profile as the broader Twin Cities Metro. Minnesota has some of the highest radon levels in the U.S., and the MDH estimates roughly 2 in 5 MN homes exceed 4 pCi/L. Many Maple Grove homes from the 1980s-2000s have basements that have never been tested. Testing is quick, inexpensive, and the only reliable way to know.
Can Radon Stoppers handle walkout basements in Maple Grove?
Yes. Walkout basements have exposed walls on one side and slab on grade on others -- the system design has to account for both. Radon Stoppers assesses your specific foundation configuration before designing and quoting your system. We've installed mitigation in dozens of Twin Cities Metro homes with walkout and lookout basement designs.
How do I know if my Maple Grove home's passive radon system is working?
Passive systems installed during construction (typically a PVC pipe running from beneath the slab to the roof) reduce radon entry but don't actively pull radon out. A post-construction test will show whether levels are acceptable. If they're at or above 4 pCi/L, adding an inline fan converts the passive system to an active one -- usually a 1-2 hour job. Radon Stoppers activates and upgrades passive systems throughout the Maple Grove area.
Ready to make your homesafe from Radon?
Call us for a free, no-obligation assessment and quote specific to your property.