Serving Derby, CO and surrounding areas
Approved
In business since 2018
Free estimates
Customers say: True professional
"Radon test is done and info was useful. Now we are planning on an update of old radon system."

*The Angi rating for Radon Detection And Reduction companies in Derby, CO 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 Derby, CO 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 February 13, 2026
Serving Derby, CO and surrounding areas
Approved
In business since 2018
Free estimates
Customers say: True professional
"Radon test is done and info was useful. Now we are planning on an update of old radon system."

Serving Derby, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Warranties offered
"We hired Custom Radon Mitigation to handle our Radon problem. They were awesome, we had zero problems. Great work!"





+4

Serving Derby, CO and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Radon exhaust fan was making noise. I did some research and ascertained bearings were failing in the fan. I arranged a good time to get it replaced, he showed up and had it replaced in about 20 minutes. I did give him the model number of the fan so he knew for sure what I needed. Quick and easy."





+5

Serving Derby, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2011
Free estimates
Emergency services offered
"Recently I had radon mitigation system installed in my house. The job was done by Affordable Radon Services LLC. Very friendly workers Ken and Joe worked on my property. They did excellent job. The following test showed significant decrease at the radon level on the property. I am very happy that I hired this company and recommend for your needs."





+25

Serving Derby, CO and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"All Colorado Radon Mitigation Inc did an excellent job! The gentlemen that performed the work took extra care to make sure that the routing of the PVC was done correctly and still achieve the Radon level was going to be below the 4 pCi/L level that EPA requires. They did a very good job with putting the vent in the roof correctly and making sure that no leaks would come from their work. The Radon level that I recorded prior to their work was 15-17 pCi/L and now its down .3-.4. So yes they know what they are doing and they do it very well!"





+1

Serving Derby, CO and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"mitigation of radon gas -did very good job"




Serving Derby, CO and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"Very professional, courteous, and knowledgeable. They didn't oversell me and corrected the issues I was having with persistence and creativity. They got things up and running again with the least amount of work necessary. I highly recommend Rocky Mountain Radon."





+34

Serving Derby, CO and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"John and his company were very professional. We had a couple snafus with the sale/buying of our houses. John was very accommodating. We got our radon done and very pleased :)"





+3

Serving Derby, CO and surrounding areas
Approved
In business since 1998
Free estimates
Credit card accepted
"The company and installers provided me with excellent information and the “Juan” installed the unit beyond my expectations. Additionally, they are getting my family/friends referrals."


Serving Derby, CO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
Master Mitigators works with homeowners, buyers, sellers, real estate agents, builders, and business owners across Denver and the Front Range, where radon exposure remains a recognized concern. Colorado's soil and foundation construction create conditions that require informed assessment and tailored response. Addressing radon isn't only about installation—it's about understanding what's beneath your property and how to respond effectively.\n\nYou'll receive an evaluation that accounts for your foundation type, soil composition, and property layout. From there, the focus shifts to planning a system that fits your space without disrupting daily routines or compromising structural integrity. Every property presents different variables, and your solution should reflect that.\n\nReach out to Master Mitigators to schedule a radon assessment for your home or 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 Denver, CO, 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.