Mitigation
Radon mitigation cost estimator
Pick your state and foundation type to see every radon mitigation cost figure a public agency publishes that applies to your home, each with its publisher and year. The estimator shows those published figures side by side and never turns them into a single number of its own.
- Updated October 2026
- EPA's range and 17 state agencies' own figures, each with its year
- 51 states and DC, four foundation types
EPA's range for an existing home
$800 to $2,500EPA's figure
Choose a state to see the figure its own agency publishes.
- Lowest published$500 to $2,500Michigan, national figure
- EPA's range$800 to $2,500EPA, published 2001
- Highest published$900 to $3,000Georgia, national figure, published 2025
- EPAPublished 2001$800 to $2,500
- Georgia, national figurePublished 2025$900 to $3,000
- Michigan, national figureYear not stated$500 to $2,500
- Utah, national figureYear not statedaverage $1,200
| Row | Figure (dollars) |
|---|---|
| EPA | $800 to $2,500 |
| Georgia, national figure | $900 to $3,000 |
| Michigan, national figure | $500 to $2,500 |
| Utah, national figure | average $1,200 |
Calculated by Radon411Installation at each publisher’s figure, plus ten years of a 60-watt fan at Minnesota’s $52.42 a year (10 cents a kilowatt hour). A replacement fan, $200 to $350 by EPA’s figure, is not counted: the published fan lives run 11 to 15 years.
Every published figure, before a state is chosen
Method
How the estimator works
It reads the same published figures as the radon mitigation cost page. For your state it shows your state agency's own figures, where one is published (17 states publish one on their radon pages). For your foundation it shows the figures a publisher ties to a foundation type. It then adds EPA's range and the figures publishers give for the whole country, the fan's running cost and the cost of a replacement fan.
Next steps
Turn the figures into a real price
Step 1 of 3:
Confirm your result
EPA recommends fixing a home if one long-term test, or the average of two short-term tests, shows 4 pCi/L or more.
Step 2 of 3:
Get more than one estimate
Ask each contractor to inspect the home and put the price in writing, with references.
Step 3 of 3:
Compare the same scope
Line up suction points, fan, pipe route, sealing, electrical work and permits, the warning device and the follow-up test.
What changes it
What changes your result
- Size and design of the homeCosts vary with the size and design of the home and the reduction methods it needs, which is why publishers give ranges.
- Foundation typeA sub-slab system is the usual method for a basement or slab; crawl spaces and homes with several foundation sections are priced separately where a publisher does.
- Suction points, fan and pipe routeHow many suction points the slab needs, the fan size and where the pipe can run set most of the labour and parts.
- SealingSealing cracks and openings limits the flow of radon in and makes the rest of the system more effective; openings that cannot be sealed can make it costlier to run.
- Electrical work and permitsThe fan needs a circuit, and some places need a permit; both belong in the written estimate.
- The follow-up testA test within 30 days of installation, no sooner than 24 hours after the fan starts, shows whether the system works; line it up in every estimate.