Radon Mitigation in
St. Paul, Minnesota
NRPP-certified, EPA-trained radon mitigation serving St. Paul and Ramsey County. Family-owned since 2014. Free estimates. 5-year written warranty.
Radon Risk in St. Paul & Ramsey 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 Ramsey 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 St. Paul 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 St. Paul
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 St. Paul and Surrounding Communities
Based in Monticello, we serve St. Paul and the surrounding Ramsey 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.
St. Paul's Oldest Neighborhoods Have Untested Radon Risk Hiding in Plain Sight
St. Paul has some of the oldest residential housing in Minnesota. Summit Hill, Dayton's Bluff, the West Side, and Cathedral Hill are full of pre-war homes -- many with limestone, brick, or concrete block foundations that have been settling and shifting for 80 to 100 years. These aging foundations are among the most common radon entry points: mortar joints crack, floor-wall seams open up, and earthen sections go unsealed for decades. Ramsey County shares Minnesota's elevated radon risk profile, with the Minnesota Department of Health estimating roughly 2 in 5 MN homes exceed the EPA action level of 4 pCi/L.
Radon is the second leading cause of lung cancer in the United States, according to the EPA -- responsible for approximately 21,000 deaths per year. The risk is cumulative: years spent in an untested, elevated-radon home adds up. St. Paul's density of older rental housing means many residents have never known whether their home has been tested, let alone mitigated.
Radon Stoppers, LLC is NRPP-certified and MDH-licensed to perform radon mitigation throughout Ramsey County. We have experience with the varied and complex foundation types common in St. Paul's established neighborhoods. Most installations are completed in a single day with minimal disruption, and every job carries a 5-year written warranty.
Radon Mitigation FAQs for St. Paul
Is St. Paul at elevated risk for radon?
St. Paul is in Ramsey County, which shares Minnesota's overall elevated radon risk. The state is classified as a high-radon state by the EPA, and the MDH estimates about 2 in 5 MN homes test above 4 pCi/L. St. Paul's older housing stock -- with aging foundations, stone basements, and decades of settling -- creates more entry points for radon than newer construction. Testing is the only reliable way to determine your home's actual levels.
Can Radon Stoppers mitigate an older St. Paul home with a stone or block basement?
Yes. Radon Stoppers has experience with the full range of foundation types found in St. Paul's historic neighborhoods, including limestone rubble, brick, poured concrete, and concrete block. These foundation types require careful assessment of soil communication and pressure fields before designing a mitigation system. We assess each property individually and don't apply a cookie-cutter solution to complex foundations.
My St. Paul home is going on the market -- should I test and mitigate before listing?
Testing before listing is strongly recommended. Buyers routinely request radon tests, and a high result during inspection can delay or derail a closing. Proactively mitigating before listing -- and having documentation of post-mitigation levels -- removes a common negotiation point and gives buyers confidence. Radon Stoppers offers real estate mitigation services with fast turnaround throughout Ramsey County.
Ready to make your homesafe from Radon?
Call us for a free, no-obligation assessment and quote specific to your property.