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Top-Rated Radon detection and reduction specialists in Madison - Updated Nov 2026

Avatar for Lifetime Home Services
Lifetime Home Services
4.9(
110
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, WI and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"It went great. I highly recommend them. They were a pleasure to deal with. The person that came out for the estimate answered all of my questions. The estimate was fair. The work was done on schedule and with no problem. At completion, everything was explained to me. I used their electrician which worked out fine. After completion the radon test showed that my level was now undetectable."
Additional Photos
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+1

Response time2 days
Response rate100%
4 neighbors recently requested a quote
Avatar for PureTech Home Services LLC
PureTech Home Services LLC
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, WI and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

All team members are certified with the national body NRPP for radon testing and mitigation. Our team delivers personalized, professional service with a focus on health, safety, and customer satisfaction. \n \nHealthy homes start with PureTech Home Services?your trusted local expert for safer indoor environments. \n \nIf you're curious what the average radon gas levels are in your local area, we've built a tool with the latest radon testing data plus health implications for the entire state of Wisconsin here: Radon Levels by Zip Code Search \n \n

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11 neighbors recently requested a quote
Avatar for Property Services & Inspections, LLC
Property Services & Inspections, LLC
New to Angi
Radon Gas - Testing

Serving Madison, WI and surrounding areas

Approved

Free estimates

Credit card accepted

Property Services & Inspections, LLC is Wisconsin's trusted source for professional home inspection and environmental testing services. We help homeowners, buyers, sellers, and real estate professionals make informed decisions with thorough, unbiased inspections and accurate reporting.\n\nOur services include complete home inspections, indoor air quality testing, mold testing and radon gas testing. We use industry-standard methods and advanced equipment to identify potential issues affecting your properties safety, health, and value.\n\nAt Property Services & Inspections, LLC, we are committed to honesty, attention to detail, and exceptional customer service. Whether you're purchasing a new home, preparing to sell, or addressing concerns about air quality, mold, or radon, we provide the information and solutions you need for peace of mind.\n\nProudly serving southeastern Wisconsin and surrounding communities with reliable inspections and environmental services you can trust.

Avatar for PureTech Home Services LLC
PureTech Home Services LLC
5.0(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, WI and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"We hired PureTech to advise us on a real estate inspection that included a radon test. That test came back over the safety threshold. After meeting with Zach C, he advised us to make some repairs in the basement and to schedule a retest. We did and the results speak for themselves; the levels came back well into the safe zone. I couldn't be more pleased with the recommendations made by PureTech and Zach C specifically. Saved us a bundle in what could have been a nightmare, and now the sale of our home can proceed. Thank you PureTech!"
Radon Abatement Fan
Before / After Test
After Mitigation
Pre & Post Test
System Install

+6

Response time5 hrs
Response rate94%
1 neighbors recently requested a quote
Avatar for Hero Home Inspection
Hero Home Inspection
5.0(
4
)
Radon Gas - Testing

Serving Madison, WI and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"i checked out quite a few inspectors and was looking for not just a home inspection but also a radon test. this company had the best price on the combined requested services by a pretty decent margin. the report given was very detailed, with color pictures that was very well organized so it was easy to find and easy to understand. it was quite a few pages, which may discourage some, but if you want to know what you're looking at when purchasing a home, you'll appreciate the extra detail spent to get a large report. i was very impressed at how nice, and prompt it was because we were under some pressure with our closing date and he managed to get all this completed within just a few days. i was very thankful and appreciative for the services i got. give paul a call, he'll o right by you."
Roof Deterioration
Client1
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Client1

+2

Response time10 hrs
Response rate97%
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

The Madison, WI homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.