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Our Services

  • Affordable solutions
  • Guaranteed radon reduction
  • Quiet, reliable, right-sized fans
  • Systems for basements
  • System maintenance and service
  • Interior and exterior installation options

Our National Radon Defense Dealers Serving Colorado

11795 E. 45th Avenue
Denver, CO 80239

Complete Basement Systems of Colorado is a radon mitigation contractor and National Radon Defense dealer serving Boulder, Denver, Jefferson, Weld and other nearby areas in Colorado.

955-H West Garden of the Gods Rd
Colorado Springs, CO 80904
Green Star Services is a BBB-certified contractor, offering free estimates for radon testing, mitigation, air duct cleaning & dryer vent cleaning in Colorado Springs & nearby.

Colorado radon testing and radon mitigation services

Radon gas, a naturally occurring byproduct of radium, is caused by uranium decay in the soil. Since uranium is found in most soil, radon is not limited to affecting just one state or area of the world but can be found in any home, anywhere. It's important to be prepared, because exposure to high levels of radon gas can lead to serious health problems. In fact, radon is the leading cause of lung cancer for non-smokers in the U.S.

That's why National Radon Defense has designed a system to produce the nation's finest radon specialists in Colorado. Our goal is to properly inform the public of the hazards of radon exposure and benefits of radon mitigation.

We Provide:
  • Radon testing
  • Radon mitigation systems
  • Multi-family radon testing & mitigation
  • Vapor intrusion mitigation
  • Indoor air quality services
You Receive:
  • A healthy home environment
  • Clean indoor air
  • Protection for you and your family
  • Safe radon levels
  • Peace of mind

There's absolutely no reason why you and your loved ones have to suffer from the dangerous effects of radon gas. Contact us today to mitigate your Colorado home.

Although no homeowner wants to increase cancer risks for family members, many people neglect to test their homes for radon, an invisible, odorless, cancer-causing gas that emanates from soil and rocks. Contacting a radon mitigation specialist to perform a radon test, or conducting your own test with a DIY radon test kit is the first step in protecting your family from hazardous levels of radon gas.
Customer Reviews
  • By Charla B.
    Castle Rock, CO
    "The guy who installed our unit was nice friendly and knowledgeable. We..."

    Customer Review

    By Charla B.
    Castle Rock, CO

    The guy who installed our unit was nice friendly and knowledgeable. We will be testing for radon this next week to see how the system is working.
  • By Mary M.
    Colorado Springs, CO
    "I was very pleased with the service and professionalism of both Ryan and..."

    Customer Review

    By Mary M.
    Colorado Springs, CO

    I was very pleased with the service and professionalism of both Ryan and Trey. They were explained everything and answered all my questions. I would use this service again in the future.
  • By Pam B.
    Colorado Springs, CO
    "Awesome, thorough and left home as he found it and even better with the..."

    Customer Review

    By Pam B.
    Colorado Springs, CO

    Awesome, thorough and left home as he found it and even better with the service, Even made sure the basement windows were locked back.
  • By Jonathan S.
    Colorado Springs, CO
    "We were referred to you by another agent and are so happy we were..."

    Customer Review

    By Jonathan S.
    Colorado Springs, CO

    We were referred to you by another agent and are so happy we were. Absolutely fantastic job and phenomenal customer service!
  • By Brian G.
    Woodland Park, CO
    "GREAT JOB! I would highly recommend you to any friends or clients!"

    Customer Review

    By Brian G.
    Woodland Park, CO

    GREAT JOB! I would highly recommend you to any friends or clients!

Featured Colorado Cities:

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Recent job requests for radon mitigation in CO:

Project Location: Tim Tam Way, Parker, CO 80138

Comment: I have a crawlspace under my living room that is not sealed. also, my wife is having chest paint and other symptoms that are related to RADON. We do have a Radon system but we don't know if is removing the right amount of gases from under the house.

Project Location: E 55th Ave, Denver, CO 80238

Search Request: all things basement

Comment: We bought a Boulder Creek home in Stapleton in 2016. Our finished basement has never had radon testing, but the builder said that the home already had crawl space provided for radon ventilation. Do you do this type of project?

Project Location: Colt Cir, Castle Rock, CO 80109

Comment: Radon in house?

Project Location: Aliante Drive, Broomfield, CO 80023

Comment: I am selling my house. The inspection shows radon in the crawlspace. The buyers are asking for mitigation.

Project Location: Alexis Street, Loveland, CO 80537

Comment: Need an estimate for radon test/mitigation. Our home has a large crawl space

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