Radon Testing and Mitigation in Evans, CO
Founded in 1867 and incorporated in 1885, Evans is one of the older established communities in Weld County, and that history shapes how radon shows up here. Unlike the fast-build boomtowns nearby, much of Evans was built long before radon-resistant construction was common, which is exactly why testing matters in this part of Northern Colorado. We connect Evans homeowners, buyers, sellers, and landlords with independent, Colorado-licensed radon professionals. NoCo Radon Pros is a matching service, not a contractor, and we do not hold a radon license.
Radon and older housing in Evans
Evans had 22,165 residents at the 2020 census and sits within the Greeley Metropolitan Statistical Area. Its growth has been steadier than that of new-build towns like Johnstown, and its housing mix leans older, with established neighborhoods such as Ashcroft Heights, Ashcroft Park, Governors Ranch, Willowbrook, the Ridge at Prairie View, and Gateway Estates. Homes built decades ago were rarely fitted with a passive radon vent system, so an active mitigation system is often the practical fix when a test comes back high.
Weld County is classified as EPA Radon Zone 1, the highest radon-potential category. Statewide, about half of Colorado homes test above the action level, according to the Colorado Department of Public Health and Environment. Zone 1 describes a county pattern, not any single address, so the age of a home does not tell you its radon level. Only a test does.
The 2013 flood and a mixed housing stock
Evans carries a distinctive recent history: in the September 2013 Colorado floods, the South Platte River inundated the town, and 159 homes in the Eastwood Village Mobile Home Park were tagged uninhabitable. Parts of the town were rebuilt in the years that followed. That leaves Evans with a mix of newer rebuilds, which may include radon-resistant features, and a larger stock of older homes that generally do not. For buyers and sellers working through a transaction, that mix is a good reason to test early and document the result. Our radon testing overview explains how a measurement is done.
What happens after a high test
The standard fix is an active soil depressurization system installed by a licensed mitigation professional: a sealed vent pipe and fan that draw radon gas from beneath the home and route it above the roofline. Most standard systems run about $1,000 to $2,500, with around $1,500 common; crawl space and multi-foundation homes cost more. The full breakdown is in our radon mitigation cost guide.
Colorado licenses radon measurement and mitigation professionals, and that protection costs you nothing to use. Verify any contractor on the state DORA license lookup before work begins. Every professional we match you with is independent and state-licensed. To understand the disclosure rules that apply when you sell or rent in Evans, read our Colorado radon law guide.
Get matched in Evans
Tell us your Evans neighborhood, your situation, and your test result if you have one. We will connect you with an independent, Colorado-licensed radon professional serving Weld County. There is no cost to you.