*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
Serving Marseilles, IL and surrounding areas
Approved
In business since 1988
Free estimates
Customers say: Quality work
"Dave was on time, courteous and quietly and efficiently did high quality work. We still need to do the radon test but definitely happy with the quality of work. Will update the review once we have been able to complete the independent radon testing. Thanks!"
+11
Serving Marseilles, IL and surrounding areas
Approved
In business since 1957
Free estimates
Warranties offered
"as above. spent over an hour inspecting and testing"
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
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.
If radon is present in your home, you can expect to pay around $1,000 for a radon mitigation system or between $780 and $1,250 in most cases. The exact price will depend on the severity of the radon leak, home size, and the protocol the radon specialist develops to remove radon from your home and keep it out. Your foundation type will also affect your radon mitigation system cost, as unfinished basements will cost about $4,600 to seal and ventilate, while crawl spaces without a foundation slab may need extra encapsulation, costing $1,500 to $15,000.
You can buy DIY radon test kits from a home improvement store and conduct radon testing, but these tests are often inaccurate. No matter the result, you should supplement DIY testing with professional radon detection and analysis. DIYers only have access to passive radon tests, which aren’t as reliable as active tests that professionals use. Plus, it’s very easy for DIYers to make mistakes during testing, leading to inaccurate results. If you’re moving into a new home, have concerns about radon, or are due for an updated test, hire a professional.
Radon testing costs depend on whether you hire a professional radon inspector or DIY test. You can expect to pay $150 to $800 to hire a local radon inspector, and home-testing kits range in price from $15 to $250 from home improvement stores. However, it’s best to trust a professional inspector with this task to ensure accurate results. Plus, if you have radon in your home, your testing company can develop a mitigation protocol to keep you and your family safe from the dangerous gas, so it’s well worth the money to hire a professional.
Yes, radon testing is absolutely necessary if you suspect the presence of this hazardous gas, and the Environmental Protection Agency (EPA) recommends testing for all homes in the country. Radon is a pervasive natural gas that can leak through your home’s foundation and seep into the living areas. Unfortunately, the gas is highly carcinogenic and is the second leading cause of lung cancer. Radon testing is crucial for keeping you and your family safe from harm, so hire a radon mitigation specialist to test your home if you suspect its presence in your home.
In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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.
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.
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.
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.
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
