Get matched with top radon detection and reduction specialists in Castle Pines, CO

"Radon test is done and info was useful. Now we are planning on an update of old radon system."

"Veteran Radon installed a radon mitigation system In our home on 2/19/26. They did a great job, and we recommend them highly! Jason came to our home to look at the situation so he could prepare an estimate. He was friendly, courteous, and happy to answer our questions. Our system was installed by Ken, who was thoughtful, conscientious and efficient. He gladly worked with us to locate the outlet of the system where it would have the least impact on our outdoor space. The work took only about half a day, minimizing disruption to our lives. His workmanship was excellent. The completed system looks very neat and well constructed. Everything fits beautifully. Prior to the installation, we had tests showing radon levels of 20.4 pCi/L and 25.9 pCi/L. Post-installation testing showed that our radon level was reduced to 0.7 pCi/L, well below the 4.0 pCi/L that the State considers acceptable."

"Steve did a great job and provided several options for our Radon mitigation. He did a great job and the Radon levels quickly dropped to well below minimum standard."

"They showed up on time and finished within 2 hours completing radon mitigation system."

"All Colorado Radon tackled a particularly difficult radon mitigation that other companies refused to mitigate. They were very thorough and knowledgeable. Most of all, they were successful in reducing radon levels to well below government standards. We would use them again."

"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."

"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 :)"

"PineBreeze did an outstanding job, start to finish. Tyler has an outstanding crew in James and John. Courteous and Timely. We are extremely please with the overall professionalism of this company and highly recommend them. 2 thumbs up!!!"

"Aaron is professional, efficient and did a great job. He explained everything. I highly recommend Radon Free CO."

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.