Free Colorado Radon Gas Disclosure
Required radon disclosure for Colorado rental properties. Colorado has among the highest indoor radon levels in the United States. Disclose known test results and mitigation status to tenants before lease signing.
Free Colorado Radon Gas Disclosure — overview
A Colorado Radon Gas Disclosure documents the landlord’s knowledge of radon test results and mitigation status for the rental property at the time of lease signing. Colorado has among the highest indoor radon levels in the United States. The EPA action level for radon is 4.0 pCi/L; Colorado’s average is approximately 6.3 pCi/L. The form on this page produces a signed disclosure that becomes part of the lease record.
Complete the Disclosure Form
Complete the form below to generate a comprehensive Colorado Radon Gas Disclosure. The form produces a multi-page PDF in legal-document format with all sections, signature lines, and tenant acknowledgment. Both parties should sign the printed copy.
1. Rental Property
2. Radon Test Results
3. Tenant Information
4. Landlord Information
5. Tenant Acknowledgment
About Colorado Radon Gas Disclosure
Colorado is consistently ranked among the states with the highest indoor radon levels in the nation. Radon is a naturally occurring, colorless, odorless radioactive gas that forms from the decay of uranium in soil and rock. It is the second-leading cause of lung cancer in the United States after smoking.
Colorado’s Radon Profile
- Colorado average indoor radon level: approximately 6.3 pCi/L
- EPA action level: 4.0 pCi/L — Colorado’s average is about 57% above this threshold
- More than 50% of Colorado homes test above the EPA action level
- Higher-risk areas include the Front Range, Colorado Springs, and many mountain communities
Mitigation Reduces Risk Substantially
A properly installed sub-slab depressurization (SSD) system typically reduces radon levels by 80-99%. If your property tests at or above 4.0 pCi/L, mitigation is a worthwhile investment in tenant health and landlord liability protection.
Protect your Colorado rental investment
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⚖ Legal Disclaimer
This form is provided for general informational purposes only and does not constitute legal advice. For current Colorado radon disclosure requirements and testing resources, visit the Colorado Department of Public Health and Environment. Consult a qualified Colorado attorney for advice specific to your situation.
