Radon Mitigation System Cost in Minnesota (MN)
A radon mitigation system generally costs $1,500 to $3,000 installed in Minnesota, per the Minnesota Department of Health, including the $75 MDH system tag every licensed install carries. The EPA does not publish a national dollar figure, saying only that most homes cost about the same to fix as other common home repairs. Everything else on this page explains where a specific Minnesota home lands inside the MDH range, and every dollar figure you will read here carries a citation, because unsourced radon pricing is how homeowners get misquoted.
$1,500 to $3,000 installed
The typical Minnesota range reported by MDH. The required system tag is $75 under the licensing law. The EPA does not publish a national dollar figure. The real number for your house is a free written quote from a licensed contractor.
What shapes a Minnesota quote
Three things, no mystery. The problem is common here: in MDH's county data for 2016 to 2025, 34.0 percent of tested Hennepin County properties and 41.7 percent of tested Olmsted County properties came back at or above 4 pCi/L, against 36.2 percent statewide, and every county is ranked on our radon levels by Minnesota county page. The install has to reach the outdoors: MDH describes the fan sitting in an unconditioned space such as an attic, a garage or outside, with the pipe discharging above the roof, and on a two-story house in a climate with real winters that means longer pipe runs, condensation-aware routing, and attic fan placements. And the work itself is regulated: under Minnesota Statutes 144.4961, paid mitigation is licensed work performed to MDH standards with a system tag, and MDH tells you to retest afterward, so this is not a handyman pipe job. You are buying the outcome, a verified low reading, not just materials.
Radon mitigation cost per square foot in Minnesota
There is no honest per-square-foot price. MDH publishes its range per job, not per foot, and the per-foot figures you will see on national cost sites are that same kind of range divided by an assumed house. Square footage is a weak predictor here because a mitigation system serves the slab, not the floors above it: a 1,200 square foot rambler and a 2,400 square foot two-story on the same footprint are close to the same job, while a 1,200 square foot house with an addition on its own slab can need a second suction point and cost more than both. What the quote actually prices is what is under the slab, how far one suction point reaches, and where the pipe can run, which is why the factors below matter more than the tape measure.
The eight factors that move a Minnesota quote
Foundation type
A single accessible basement slab is the simplest job. Crawl spaces need a sealed soil-gas membrane over the exposed earth. Homes that combine basement, crawl space, and slab sections may need the system to reach each zone.
What is under the slab
Suction has to spread beneath the concrete. Coarse gravel carries it far from one suction point; dense sand or clay may not, which can mean a stronger fan or a second suction point. Contractors diagnose this before quoting.
Home size and footprint
A larger slab area is more ground for one pressure field to cover. Additions matter more than square footage alone, because a slab poured separately often needs its own reach into the system.
Pipe routing and aesthetics
The shortest route is an exterior wall run. Keeping the pipe hidden, through closets, the garage, and the attic, takes more labor and framing work but preserves curb appeal. Routing is the most common reason two identical readings get different quotes.
Fan selection
Fans vary in power and price, and the right one is sized to your sub-slab conditions, not bought off a shelf by guesswork. Oversizing wastes electricity every hour for decades; undersizing fails the verification test.
Sealing work
Open sump baskets, slab cracks, and floor-to-wall joints are radon entry routes MDH identifies, and sealing the accessible ones is part of a proper install. Older foundations simply have more to seal.
Electrical
The fan needs a circuit where it lives, usually the attic or outside. Homes built in 2009 or later already have an electrical box roughed in at the future fan spot under the state code; older homes may need an electrician for that leg.
Finished basements
Working around finished walls and ceilings takes care and time, and the suction point gets placed in a utility area or closet to keep finished space intact.
Where each system type lands in the MDH range
Per-type dollar menus you see online are usually invented, so this table positions each scenario against the sourced statewide range instead of pretending to know your house from here.
| System type | Typical home | Position in the range |
|---|---|---|
| Passive system activation | Homes built in 2009 or later with the code-required rough-in | Typically the least expensive scenario: the pipe, roof penetration, and electrical box already exist, so the job is the fan, the monitor, and verification. |
| Standard sub-slab system, one suction point | Most single-basement Minnesota homes | The baseline job the MDH statewide range describes: core the slab, run and seal the pipe, mount the fan, verify. |
| Sump or drain-tile suction | Homes with a sump basket or perimeter drain tile, common across the Red River Valley and newer construction | Comparable to the standard job. The sump gets an airtight, serviceable lid and doubles as a ready-made suction point. |
| Crawl space membrane system | Cabins, older homes, and additions with exposed-soil crawl spaces | Usually above the standard job because of membrane material and sealing labor across the crawl space floor. |
| Multiple suction points or combined foundations | Large footprints, additions on separate slabs, walkouts needing extra coverage | The upper end of the range, and occasionally beyond it. More penetrations, more pipe, and more diagnostic work. |
Basement radon mitigation system cost
Nearly every Minnesota quote is a basement quote, and the standard basement system is sub-slab depressurization: one hole cored through the basement floor, a pipe run up and out above the roofline, and a fan that keeps the soil under the slab at lower pressure than the house. That is the job the MDH $1,500 to $3,000 range describes. A sump basket or drain tile gives the contractor a ready-made suction point and keeps the job near the baseline. A finished basement does not change the physics, but it changes the labor: the suction point moves to a utility room or closet, the pipe routes through finished space or outside, and the sealing work happens around drywall rather than bare block. Expect a finished basement to sit higher in the range than an unfinished one with the same reading.
Radon mitigation cost in Minneapolis, St. Paul, Rochester, Duluth and St. Cloud
MDH publishes one range for the whole state and no city breakdown, so the sourced range for Minneapolis is the same as everywhere else in Minnesota: $1,500 to $3,000, which MDH says a system generally costs. What changes by city is the housing stock the contractor is working in. Finished mid-century basements across Minneapolis, St. Paul and Bloomington put a premium on discreet routing. Karst-country homes around Rochester can need extra sub-slab diagnosis. Older Duluth hillside foundations lean on sealing and exterior routing. Red River Valley homes in Moorhead often have sump baskets that become clean suction points, and post-2009 homes around St. Cloud and the newer suburbs often only need the passive system activated. Same physics, different labor, one sourced range.
What a real Minnesota quote itemizes
A licensed contractor's written quote should let you compare like-for-like. Look for:
- The number and location of suction points, and what happens if the pressure field needs extending
- The fan model and where it mounts
- The full pipe route and discharge point above the roofline
- Sealing work included, such as sump lids and accessible slab cracks
- The MDH system tag, a $75 item required on every professional install, and the post-installation radon test that verifies the result
- Warranty terms on parts and workmanship, in writing
Monthly cost to run a radon mitigation system
The fan runs around the clock, and MDH publishes a worksheet for estimating the electricity it uses. The arithmetic is the fan's rated watts divided by 1,000, times your price per kilowatt hour, times 8,760 hours a year. MDH's rule of thumb: at about $0.10 per kilowatt hour, the fan's rated wattage roughly equals its annual cost in dollars, so a 66-watt fan runs about $66 a year, or about $5.50 a month. MDH's own worked example is a 20-watt fan at $0.11 per kilowatt hour, which comes to $19.27 a year, under $2 a month. The worksheet lists common radon fans from 19 watts to 632 watts, most of them between about 20 and 175 watts, so the fan the contractor specifies decides the bill; those are maximum ratings, and MDH notes a fan moving less air draws less. The EPA's consumer guide adds that most systems also pull some heated air out of the house, which can raise a utility bill, and it publishes no figure for that. Fan sizing is the lever: a properly sized fan holds levels down at the lowest running cost, which is one more reason diagnosis beats guesswork at quote time.
Financial assistance
MDH lists no radon-specific grant and does not hand out money for mitigation itself. What it does is point to general home-repair programs and local housing agencies a mitigation system may qualify for, on its financial assistance page. Minnesota Housing runs the Rehabilitation Loan Program, the Emergency and Accessibility Loan Program, and the Fix Up Home Improvement Loan Program. USDA Rural Development runs Single Family Housing Repair Loans and Grants, also called the Section 504 Home Repair program, for very low-income rural homeowners. These may be offered to homeowners who meet each agency's rules, and most are loans rather than money you keep. Amounts and eligibility change, so read the agency's own page for what is current before you plan around it. County public health offices are the other lead worth calling; many, listed in the MDH Local Radon Contacts directory, may run free or low-cost test kit programs and know what local help is funded right now.
Why this page has no cost calculator
Because the honest inputs, sub-slab material, pressure field reach, and routing constraints, are exactly the ones a calculator cannot see from your ZIP code. The free path to a real number is a written quote from an independent, MDH-licensed contractor, and comparing it against the itemization list above. Quotes through this site cost nothing and carry no obligation, and our radon mitigation page explains the system you would be buying.