Mitigation
Radon mitigation cost estimator
Short answer
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.
Estimator
Find the figures for your home
Choose a state to see its figures
Pick your state to see whether its health or environment department publishes a cost figure.
Figures stated for the whole country
EPA's own range, and the national figures that state agencies and a state university program publish.
- $800 to $2,500EPARetrofitting an existing home with a radon system. Published 2001.
- $900 to $3,000Georgia, national figureAverage about $1,500, attributed to EPA, ranging $900 to $3,000. Published 2025.
- $500 to $2,500Michigan, national figureA home mitigation system, stated as a national range.
- average $1,200Utah, national figureA system by a nationally listed contractor, stated as a national average.
Each figure is its publisher's own, in the dollars of the year it was published. We do not average them or adjust them, and we do not work out a price for your home: get written estimates from qualified mitigators.
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
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.
Get more than one estimate
Ask each contractor to inspect the home and put the price in writing, with references.
Compare the same scope
Line up suction points, fan, pipe route, sealing, electrical work and permits, the warning device and the follow-up test.