Colorado (CO) lease form
Quick answer
Colorado leases must disclose the landlord's identity, radon test results, bed bug history, and include a statement on how tenants can report unsafe conditions. Colorado does not require a written lease by statute, but any written agreement must include required disclosures and cannot contain the prohibited clauses listed in C.R.S. §38-12-801. Federal lead-paint disclosure applies to pre-1978 units.
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Landlords must provide current radon testing data, concentration levels, mitigation efforts, and information on any installed mitigation system (C.R.S. §38-12-803).
Landlords must disclose any known bed bug infestation in the rental unit within the past eight months before the lease is signed (C.R.S. §38-12-1005).
Written leases must state the landlord's name and address or the name and address of the authorized management agent (C.R.S. §38-12-801).
Leases executed after January 1, 2025 must include a statement explaining how and where tenants can report unsafe or uninhabitable conditions (SB24-094).
Federal law requires landlords of pre-1978 units to disclose known lead hazards and distribute the EPA pamphlet before signing.
General information, not legal advice. Governing statute: C.R.S. Title 38, Article 12 (Tenants and Landlords), including §§38-12-801, 38-12-803, 38-12-1005. Confirm current requirements or consult an attorney before finalizing a lease.
Colorado lease FAQ
No statute mandates a written lease, but C.R.S. §38-12-213 requires that if a written agreement is used, all terms must be disclosed in writing and a copy provided to the tenant.
C.R.S. §38-12-803 requires landlords to provide current radon test results, concentration data, and information on any mitigation system before or at lease signing.
One-sided tenant-only fee clauses are prohibited. Any fee-shifting clause must be mutual, allowing fees for the prevailing party only after a court determination (C.R.S. §38-12-801).
For leases executed after January 1, 2025, the lease must include a statement explaining to tenants how and where to report unsafe or uninhabitable living conditions.
