Angie's List is now Angi. Learn more

Find top-rated Pros in your area

Enter a zip code and get matched to businesses near you.

5280 Radon Mitigation

Founded 2014 • With Angi since June 2015


(3) Verified Reviews

Business Details

Phone Number


1111 S. Huron St

Denver, CO 80223


"5280 Radon is Radon mitigation company based out of Denver, CO. Every member of our team is certified from the office to the field. Our goal with every installation is to bring your Radon levels as low as possible and make our systems look as nice as possible. There is no type of house we can't successfully mitigate and we prove that with our Radon levels guarantee."...

Verified Reviews

A few reviews for this pro...


Kevin C.

A+ rating - everyone we dealt with through the process was personal, professional, and got the job right the first time. I would highly recommend them.

Description of Work
Radon mitigation system installation

Category radon testing



Paul S.

5280 Radon initially failed to successfully diagnose the problem, even after installing a temporary second radon system to enhance the airflow from under our vapor barrier, but they refused to give up. They brought in an expert from Colorado Springs who was the head of the radon school where the owners of 5280 Radon learned their craft. He put test equipment in almost every room in our home, and we tested from the attic to the crawl space to the garage. We discovered that the radon level in our three-car garage peaked as high as 45 overnight, and that very-high level of radon was seeping into our storeroom and affecting the levels through our home. The expert recommended a second radon system to draw air from under the concrete slab in our garage. 5280 Radon did an excellent installation for us, and our radon levels now average below 1.0 throughout our house, in the unfinished storeroom, and in our garage. Thanks to 5280 Radon, we now feel good about taking deep breaths in all areas of our home.

Description of Work
We had a builder-installed radon system that reduced our radon level in our finished basement from 12 to 3. However, using a consumer radon tester, we discovered a radon level of 9 in our unfinished storeroom.

Category radon testing



Kristen T.

It went great! They were on time, professional and cleaned up after themselves! They explained how everything works and what to look out for before they left. That very night our radon numbers were already falling.

Description of Work
We needed a radon mitigation system installed in our basement.

Category radon testing

    Other local Pros in your area

    Affordable Radon Services LLC

    We are an employee owned and operated company specializing in Radon Gas testing & reduction. We have been in business since 2011, primarily serving clients in the state of Colorado, and we are excited to now offer our full line of services to the greater Spokane, Washington & Northern Idaho markets! Our services include Radon Mitigation & testing, sump pump installation & pit excavation, crawl space vapor barrier installation, crawl space insulation services, & foundation drainage systems. Along with our expert team of professionals, & wide portfolio of services, we also stand behind our work with a lifetime warranty on our Radon mitigation systems, at a guaranteed level of 3.9pCi/L or below! Let us help guide you through the process, giving you sound advice tailored to your specific needs for Radon Abatement/Mitigation to make your home safe. We offer each of our customers a “Free – No Obligation Quote” over the phone or a “Free On-Site Bid” where a member of our team will come to your home and show you placement options for you to choose from. We follow-up our quotes and on-site bids with written proposals sent directly to you. This allows you as our customer to feel comfortable knowing you have all the information needed to make the right choice. We have worked hard serving our clients for the past decade, and we would love the opportunity to earn your business whether you’re a Real Estate Agent assisting a client through closing or a homeowner concerned with the dangers of Radon Gas, give us a Call Today!  

    Quality Control

    Quality Control provides certified and state licensed Radon Testing following all AARTS/NRPP standards and protocols for the: General Public, Home Inspectors, Real Estate Agents, and Businesses for Single Family Homes, Multifamily Buildings, Schools & Large Buildings as well as Radon in Water. There may be many companies providing Radon measurment testing but when you choose Quality Control you are choosing complete transparency and comfort knowing you are in control. We strive to educate our clients first so once the decision to move forward comes up our clients are confident in choosing the best decision moving forward!! Jonathan Le Vasseur and David Le Vasseur created Quality Control in 2018 with the hopes of making a change that Jonathan was not in the position to do at the previous radon companies that he was working for at the time and helped start. Unfortunately, not everything goes to plan and with the untimely passing of our father David Le Vasseur the following year, getting to make the difference and changes that we wanted was put on hold. We finally found the drive and want that our father had with us to pursue building this business after he passed and only want to be able to see the dream we had together come to reality.  

    Axium Inspections & Radon Mitigations

    With 110% Best Price Guarantee, Axium offers the best priced home inspection with the best service! We pride ourselves on being a great resource for all real estate buyers and sellers in the Denver Metro area, Northern & Southern CO, as demonstrated in our over 5,000 5-star reviews. We are accredited and trusted and carry $1 million in Errors & Omissions and $2 million in General Liability. Established in 2007, our large team of Axium instructors have conducted over 100,000 inspections and are trained and certified – including six Certified Master Inspectors, considered to be the best in the world. Beyond home inspections, we offer radon testing and mitigation, mold inspections, well-water and water quality testing, Infra-red thermal inspections, wood-destroying organism, moisture and water inspections, damage-free lead based paint testing, sewer scopes, drone inspections and commercial inspections. Axium is now ICC certified to provide rental inspections! We offer flexible scheduling, same day service, holidays, and weekends. In addition to the 110% Best Price Guarantee, we also offer a 200% Satisfaction, a Buyers Protection (if you decide against the home we inspect, we will inspect another free of charge in the next 30 days) and a Porch 90-Day Inspection Guarantee. In addition, customers (certain inspection types excluded) have the option to opt-in to a FREE 30-Day Guard Home Warranty which offers protection for failed appliances and/or systems for up to $25000. Axium strives to provide the best service at the best price! Call us today!  

    Angi Super Service Award badge
    Super Service
    Award 2021
    Offers by Axium Inspections & Radon Mitigations on Angi
    All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves.To find more licensing information for your state, visit our Find Licensing Requirements page.
    General Information
    Free Estimates
    Eco-Friendly Accreditations
    Payment Options
    Check, Visa, MasterCard, American Express, Discover, PayPal
    Senior Discount

    Services Offered

    Radon Mitigation, Sump Pump Installation, Seal Crawlspaces, Fix Existing Radon Systems.

    Services Not Offered

    Ask for details

    Frequently Asked Questions & Answers about 5280 Radon Mitigation

    How is 5280 Radon Mitigation overall rated?

    5280 Radon Mitigation is currently rated 5 overall out of 5.

    What days are 5280 Radon Mitigation open?

    5280 Radon Mitigation is open:

    Sunday: 9:00 AM - 5:00 PM

    Monday: 8:00 AM - 5:00 PM

    Tuesday: 8:00 AM - 5:00 PM

    Wednesday: 8:00 AM - 5:00 PM

    Thursday: 8:00 AM - 5:00 PM

    Friday: 8:00 AM - 5:00 PM

    Saturday: 9:00 AM - 5:00 PM

    What payment options does 5280 Radon Mitigation provide

    5280 Radon Mitigation accepts the following forms of payment: Check, Visa, MasterCard, American Express, Discover, PayPal

    Does 5280 Radon Mitigation offer free estimates?

    No, 5280 Radon Mitigation does not offer free project estimates.

    Does 5280 Radon Mitigation offer eco-friendly accreditations?

    Yes, 5280 Radon Mitigation offers eco-friendly accreditations.

    Does 5280 Radon Mitigation offer a senior discount?

    No, 5280 Radon Mitigation does not offer a senior discount.

    Are warranties offered by 5280 Radon Mitigation?

    Yes, 5280 Radon Mitigation offers warranties.

    What services does 5280 Radon Mitigation offer?

    5280 Radon Mitigation offers the following services: Radon Mitigation, Sump Pump Installation, Seal Crawlspaces, Fix Existing Radon Systems.