Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Marseilles, IL

Q: Is radon a serious problem?

• <div><p>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).</p></div>

Q: How often should radon levels be tested to ensure safety?

• <div><p>Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.</p></div>

Q: How much does a radon mitigation system cost?

• <div><p>The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.</p></div>

Q: Why is radon detection important for residential properties?

• <div><p>Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.</p></div>

Q: What steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Marseilles, IL

*The Angi rating for Radon Detection And Reduction companies in Marseilles, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Marseilles, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on August 24, 2025

Reviewed in August 2025
We had a large mulberry tree that needed to be removed, and Cutting Edge Tree Service did an amazing job! They were incredibly nice, efficient, and affordable. The crew went above and beyond, and we will gladly recommend them to anyone needing tree service.
Cutting Edge Tree Service, LLC
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Reviewed in October 2024
They did window treatments. blinds. And everything was excellent and timely and it was pretty good. They excellent job.
Blazeks Home Furnishings Ltd
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Reviewed in March 2024
We had wind damage that took out apx 40 feet of our 6", wooden fence, and made the gate unusable. We got a very quick response to our request for an estimate, and the project was started, and completed on a very timely basis. The cost was totally reasonable. Anthony showed up with a crew,...
A&K Decking Fencing and More
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Reviewed in December 2023
I was very pleased, easy and extremely efficient process. The technician was exceptional in the service he provided.
Easy Garage Door, LLC
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Reviewed in June 2023
My experience couldn't have went any better! I've never been happier with a company's service and attention to detail. The cleaners were friendly, efficient and even cleaned things that weren't on the checklist. I'll definitely be using this company again!! Thank you Consider It Done Crew!!!!
Consider it Done
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Reviewed in April 2023
John, my pest control expert today, always does a professional job. I have a crawl space that's not very pleasant, and he has no problem getting in there and getting the job done. Great job John!
Saela Pest Control
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Reviewed in November 2022
D&B Services is knowledgable and competent in many areas of need. He is also fast and backs up his work.
D & B Services
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Reviewed in May 2022
the oner is an outstanding person with great work ethics. They did an excellent job of cutting down a large oak tree that had to be cut down limb by limb. The very hot day slowed them down, but they finished the job and left the site clean and in good shape. I would hire them again in a...
Integritree Tree Services
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Reviewed in April 2022
Thrilled at the finished product. Old tub removed and new walk-in shower installed in one day. Great installers to work with and a spotless cleanup.
Bath Planet of Buffalo
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Reviewed in August 2021
I would highly recommend X-Treme Tree Service due to their professionalism and awesome crew. Brian and his crew were very experienced, particularly his young arborist and tree climber. I was very impressed at how young and knowledgeable he was at maneuvering himself around the enormous tree in...
X-Treme Tree
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Find Radon detection and reduction specialists in Marseilles

Stuedemann Radon Resolutions

4.7(

273

)

Radon Gas - Abatement

Serving Marseilles, IL and surrounding areas

Approved

In business since 1988

Free estimates

Customers say: Quality work

"Quick and easy to work with. We failed our first radon test and passed the second after having the system put in. Highly recommended."

+11

Recommended by99%of homeowners

Radon Gas - Abatement

Serving Marseilles, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."

Response time1 day

Response rate100%

24 neighbors recently requested a quote

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Timmit Radon Systems, Inc.

4.7(

)

Radon Gas - Abatement

Serving Marseilles, IL and surrounding areas

In business since 1996

Free estimates

Warranties offered

"He was extremely helpful and went above and beyond other organizations. He wasn't the cheapest option, but he did very good work. Very accommodating."

+20

Response time8 hrs

Recommended by100%of homeowners

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Stuedemann Radon Resolutions

New to Angi

Radon Gas - Abatement

Serving Marseilles, IL and surrounding areas

In business since 1988

Free estimates

Stuedemann Radon Resolutions is a husband and wife team committed to providing expert personal radon-related services to the communities we serve, and is committed to providing all services in accordance with the requirements of the Radon Industry Licensing Act 32, Illinois Administrative Code 422, Licensing of Radon Mitigation Services, and our Quality Assurance Program (QAP). Compliance with our policy is mandatory for all Stuedemann Radon Resolutions, employees involved in radon-related services or practices.\nThe Stuedemann Promise:\nLife-time guarantee on workmanship & unconditional system success; Follow tradition of our 25-year commitment to use of only quality materials; fan manufacturer offer of 5 year warrantee on fan parts; system designed for all lowest-level conditions: basement, crawlspace, slabs; unconditionally guaranteed to reduce radon levels to below 4.0 pCi/L; family-owned and operated construction company since 1985; free estimates and fully insured.

Response time7 hrs

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Fowler Home Inspection Services

2.3(

)

Radon Gas - AbatementRadon Gas - Testing

Serving Marseilles, IL and surrounding areas

Emergency services offered

Credit card accepted

Recommended by25%of homeowners

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Radon Detection and Reduction questions, answered by experts

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).

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

The Marseilles, IL 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.

See all articles

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Amy Freeman
•
Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.