Radon mitigation quotes in Greeley
Greeley is the Weld County seat, a university and agricultural-processing city with a historic core, established neighborhoods, and substantial newer growth on its western edge.
Older housing plus university rental property makes this a market where testing regularly turns up unexpected numbers. Our introductions to independent, nationally certified contractors are free.
Greeley and Weld County
Greeley routes through our Weld County territory alongside Windsor, Evans, Milliken, and Platteville. EPA places Weld County in Zone 1 on its Map of Radon Zones. Colorado does not license radon professionals at the state level; look for NRPP or NRSB certification.
If the result surfaced in a transaction
The local market blends university rental property, long-held family homes, and newer west-side family purchases. Colorado requires sellers to provide a radon warning statement and the state brochure before a sale; the remedy is negotiated. Rental property is least likely to have been measured.
Those duties are set in Colorado, not in Weld County — Colorado radon disclosure rules has the statute and the agency behind it, including what a seller must hand over and what stays negotiable.
The housing you’re mitigating
The historic core brings brick and block foundations with partial basements and crawl areas beneath additions. Campus-adjacent conversions add multi-unit considerations where ground-contact units matter most. Newer west-side construction is conventional poured-basement work with sump systems.
Radon results do not stop at a municipal boundary, and neither do the contractors quoting here: the same Weld County soil and the same building era run through Windsor, Loveland and Fort Collins, which is why a reading in one of them is worth knowing about when you are interpreting yours. For the wider picture, radon across Fort Collins & Northern Colorado sets out how results vary between communities here, and what a system costs in Fort Collins & Northern Colorado covers the price drivers before you start collecting numbers.
Nearby coverage
Contractors quoting Greeley typically also serve these Fort Collins & Northern Colorado communities:
Go deeper on Fort Collins & Northern Colorado
Greeley questions, answered straight
We own a converted student rental. One system or several?
Usually one properly designed system rather than separate fixes per unit — soil gas enters through the shared foundation, so a certified contractor designs suction for the building footprint and verifies with tests in the ground-contact spaces.
Why do bids on older homes vary so much?
Because bidders are proposing genuinely different designs — different suction placement, different sealing scope, sometimes a crawl-space membrane one included and another skipped. Make each explain the reasoning.
What proves the system actually brought the number down?
Insist the post-mitigation radon test be in the scope of work. Run under closed-house conditions after startup, it proves the indoor number dropped rather than merely that the fan is running.
A neighbour tested at 2.9. Does that tell us anything?
Very little. Three things set your number: the permeability of the fill and soil under the foundation, the openings through the slab, and how hard the house draws air downward. None of the three is a neighbourhood-wide constant. Greeley homes on the same street, built in the same decade, land on opposite sides of 4 pCi/L often enough that borrowing a neighbour's number is guesswork. Their result is a reason to test your own address.
Should we retest after new windows and insulation?
Yes. Tightening a Greeley house reduces unintentional ventilation and can strengthen the stack effect that draws soil gas through the slab, so a home that measured comfortably before an efficiency project can read differently afterwards. Weatherisation earns a retest for the same reason a new HVAC system or a basement build-out does: it changes how the house handles air. A kit is a rounding error against the project cost and answers it directly.
Ready for real Greeley numbers?
Two minutes, and free. Your postcode is checked against coverage before you are asked for contact details, and the confirmation tells you exactly what happened to the request.
Sources
- U.S. EPA — Radon
- U.S. EPA — A Citizen’s Guide to Radon
- U.S. EPA — Consumer’s Guide to Radon Reduction
- U.S. EPA — EPA Map of Radon Zones