Radon Mitigation in Fort Collins, CO

Radon Mitigation in Fort Collins, Colorado

Fort Collins and Larimer County are in EPA Radon Zone 1 — the highest predicted indoor radon potential. Northern Colorado's geology consistently produces elevated indoor radon, with Fort Collins homes typically testing between 6 and 12 pCi/L.

Why Northern Colorado Has High Radon

Fort Collins sits along the Front Range where Precambrian granite and gneiss bedrock meets the Great Plains. The uranium content in this bedrock, combined with weathered, permeable alluvial soils, produces high indoor radon levels throughout the city. Larimer County is one of the most-studied radon-prone areas in Colorado, and CSU has been a focal point for radon research for decades.

Older Old Town neighborhoods near downtown often test in the 8-15 pCi/L range. Newer developments in Loveland, Windsor, and Wellington should still be tested — Colorado's geology produces elevated readings even with newer construction and passive radon systems.

What Mitigation Costs in Fort Collins

Mitigation in Fort Collins typically runs $1,300 to $2,500. Standard scope:

• Sub-slab depressurization with one or more suction points
• PVC pipe vented above the roofline
• Higher-flow fan often required given typical pre-mitigation levels
• Post-installation testing

Cost factors:

• High pre-mitigation levels: Common in this market; may require two suction points and a higher-flow fan
• Foundation: Poured concrete basements ($1,300-$1,900), crawl space sub-membrane ($1,600-$2,500)
• Finished basements: Very common; adds $300-$500 routing complexity

Colorado Certification Requirements

Colorado requires radon contractors to hold NRPP or NRSB certification. The Colorado Department of Public Health and Environment maintains a list of certified mitigators and offers a low-cost test kit program through the state and county health departments.

Getting Started

1. Test: Colorado DPHE and Larimer County Health offer subsidized test kits ($15). Online kits work fine too.
2. Get quotes: Fort Collins mitigators are in steady demand — 2-3 quotes typically vary by $300-$500.
3. Install and verify: Most jobs finish in a single day. Always retest 30 days after installation.

Fort Collins Real Estate and Radon

Northern Colorado real estate transactions routinely include radon disclosure and testing. Pre-listing mitigation is increasingly standard in Fort Collins, particularly in higher-end Old Town and West Fort Collins neighborhoods.

Fort Collins has some of Colorado's highest radon. Test your home — and mitigate if you're above 4 pCi/L.