*The Angi rating for Radon Detection And Reduction companies in Festus, MO 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 Festus, MO 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 08, 2025
Serving Festus, MO and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"Jason was very professional and we are very happy with the results."
+1
Serving Festus, MO and surrounding areas
Approved
In business since 2011
Free estimates
Credit card accepted
"Rob does a great job: very thorough, very informative."
Serving Festus, MO and surrounding areas
In business since 2011
Free estimates
Emergency services offered
"Great job at mitigating my Radon issues"
Serving Festus, MO and surrounding areas
In business since 1988
Free estimates
Credit card accepted
"I would definitely recommend this company to anyone!!! I hired them and the job was done nicely, Dan O'Brien was the technician who took care of the project and he did an excellent job, he answered all of my questions and explained to me everything related to Radon gas. When he finished setting everything up and the job was completed all the working area looked super clean and the installation looks just like it is part of the house and that has been there forever. This is what I call a Perfect and Complete execution of a Radon gas mitigation project."
Serving Festus, MO and surrounding areas
In business since 2023
Free estimates
Small jobs welcome
"I used Scope Environmental recently to test floor tile and the underlying mastic to determine if either contained asbestos. I selected Scope because Jeff was very responsive, professional, independent of the abatement companies and his price was competitive. Jeff suggested testing both the tiles and mastic. The tiles tested positive for asbestos but the mastic contained no asbestos. As a result, I saved considerable expense by abating the tiles only and not the mastic so I also used Scope again for the post abatement air testing rather than the abatement company. I would hire Scope again for material and air testing for asbestos, mold or any other potentially toxic materials."
+10
Serving Festus, MO and surrounding areas
Free estimates
Credit card accepted
"It went great! They set up a system in my parent's house and they mitigated the radon down to a save level. They did a test before and after, and I was satisfied with the results. Proper Environmental did a thorough job and would recommend this company to anyone!"
+3
Serving Festus, MO and surrounding areas
In business since 2019
Free estimates
Emergency services offered
"It went great they were very professional and very knowledgeable."
+43
Serving Festus, MO and surrounding areas
In business since 2017
Free estimates
Credit card accepted
Our inspectors are proudly certified through the American Society of Home Inspectors (ASHI), So, when you are ready to commit to making the most important investment of your life, we will assist you in making informed decisions about the condition of your home.
Serving Festus, MO and surrounding areas
In business since 1980
Credit card accepted
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
Serving Festus, MO and surrounding areas
In business since 2012
Free estimates
Emergency services offered
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade, and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
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 St. Louis, MO, 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.
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.
