*The Angi rating for Radon Detection And Reduction companies in Wilmington, DE 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 Wilmington, DE 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 March 30, 2026
Serving Wilmington, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Warranties offered
"They were really helpful and polite they explained the job from start to finish and they explian how radon is harmful."
+8
Serving Wilmington, DE and surrounding areas
Approved
Super Service Award Winner
In business since 1980
Free estimates
Emergency services offered
"Matt did a well-crafted job, finished in 3 hours, radon down to 0.6 when I checked the next morning."
Serving Wilmington, DE and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"It was a system that was needed to reduce radon in our basement"
+2
Serving Wilmington, DE and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"We hired George to inspect our home, a new construction. He came twice, once during the pre-drywall stage and once for the final inspection. During the pre-drywall state, he brought a colleague with him who used to work in new home construction as a second set of eyes at no additional cost to us. He also conducted a radon test. Altogether, George is very knowledgeable and thorough. I followed him for the final inspection and asked about a million questions, and George always gave full, detailed answers. You can tell he values the service he provides to new homeowners and takes pride in his work."
Serving Wilmington, DE and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Our inspector did an excellent job with inspecting the home. He proved to be knowledgeable and offered recommendations for improvements."
Serving Wilmington, DE and surrounding areas
In business since 1985
Free estimates
Emergency services offered
"Chris was WONDERFUL! I just purchased a home and wanted to have a mold inspection done for peace of mind. Chris took time to explain the process and put my fears at ease with his vast knowledge. He reviewed the test results with me prior to closing which gave me the peace of mind I needed to confirm I was making a good purchase and great investment. I highly recommend Mid Atlantic Commercial Residential Real Estate Solutions. VERY PROFESSIONAL AND COURTEOUS!!"
Serving Wilmington, DE and surrounding areas
In business since 2002
Free estimates
"The Technician Tom was very educated and took time to answer my questions to which I all ready new the answers to. This was my test to his knowledge before we got started on the job. H was very good explaining the operation of the system to us, which helped my wife hear it from a different person other then myself. Workmanship is very neat and clean and a very professional job. I hail form a service background of 35 years and can say Tom was an excellent customer service person."
Serving Wilmington, DE and surrounding areas
In business since 2008
Free estimates
Emergency services offered
"I had a pipe burst in the basement of our rental property, Flood Crew was referred by our realtor. They arrived quickly after the pipe was fixed by our plumber, demoed, and dried out the areas, even handled packing out our furniture and placing carefully in a pod storage while the work was being done. They did mold testing and made sure everything was safe, the best part was that they dealt with the insurance and we didn’t have to do anything."
+57
Serving Wilmington, DE and surrounding areas
In business since 1995
Free estimates
Emergency services offered
"Had a good experience but was sell to us a bit to much ."
Serving Wilmington, DE and surrounding areas
In business since 2002
M&M Home Inspection comes highly recommended because they are personable & professional. They are Independently owned and operated with over 5 years of experience & are dedicated to customers.
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 in Philadelphia, PA, depends mostly on the type of system being installed. Use this guide to learn about your options.
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.
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.
