
Radon Mitigation in Boulder, CO
Licensed radon mitigation for Boulder homes, with a free estimate, a written price and a retest that shows the result.
Radon is a radioactive gas that forms as uranium breaks down in soil and rock. It has no color, smell or taste, and it seeps into homes through foundation cracks, gaps around pipes, sump pits and bare crawl space floors. Levels change from house to house, so a neighbor's result can't stand in for yours.
Boulder County is in EPA Zone 1, the highest-risk radon zone, and Boulder County Public Health estimates that about one in two homes in the county has an elevated radon level. Radon is the leading cause of lung cancer in people who have never smoked.
Fixing it is routine. A radon mitigation system draws soil gas from beneath the foundation and releases it above the roof, so it never builds up indoors. Most systems go in within a day and bring readings well below the EPA action level of 4.0 pCi/L. Call (983) 200-7452 or request a free estimate.

Radon Mitigation Boulder Co. is a radon-only company. We test homes, design and install mitigation systems, and service the systems already running in Boulder-area houses.
Since July 1, 2022, Colorado has required radon mitigation professionals to be state licensed, and we install to that standard. Before we drill anything you get a written price, the pipe route is planned so the system blends in, and every new system is checked with a post-mitigation test.
More about usNo two foundations are quite the same. These are the radon services Boulder homeowners call us about most.
Short-term, long-term and continuous radon tests to learn where your Boulder home stands before you spend anything.
Learn more →The go-to radon system for Boulder basements and slab homes, venting soil gas safely above the roof.
Learn more →Sealed vapor barriers with suction underneath for crawl spaces, older homes and mixed foundations.
Learn more →Radon fan gone quiet, loud or dead? Fan replacement, repair and full system checks for existing Boulder systems.
Learn more →Quick radon fixes when a buyer's inspection comes back high, scheduled around your closing date.
Learn more →We serve Boulder and the communities around it, from Louisville, Lafayette and Superior on the plains to Nederland, Gold Hill and Jamestown in the mountains west of town.
See all service areasWe don't do roofing or HVAC on the side. Radon testing, systems and repairs are the whole business.
You see a written estimate before any work is scheduled, so install day holds no surprises.
A post-mitigation test after every new system records your new radon level.
Pipe goes up the outside, through the garage or into the attic, and the fan sits where you won't notice it.
Yes. Boulder County is EPA Zone 1, the highest radon zone, and the county estimates about half of local homes have elevated levels. Testing is the only way to know your own number.
A standard sub-slab system for a basement or slab home typically runs about $1,300 to $2,500 on the Front Range. Crawl spaces and homes with more than one foundation type cost more. You get a written price before work begins.
Most standard systems are done in one day. Crawl spaces, mountain homes on rock and mixed foundations can take longer.
Boulder County lists the ReSource Tool Library at 6400 Arapahoe Road in Boulder as a place to buy short-term kits. Hardware stores carry them too, and the State of Colorado offers free mail-in kits while supplies last.
In the colder months, when windows and doors stay shut and readings show the worst case. Retest every couple of years, and after any remodel.
Call (983) 200-7452 or request your free radon mitigation estimate in Boulder.
Free — no obligations