Colorado Landlord Tenant Law: What to Know Before Becoming a Landlord

Why this matters

Colorado's landlord-tenant laws are extensive, they change often, and the penalties for getting them wrong can be serious — from unenforceable lease provisions to statutory damages and attorneys' fees. If you're about to become a landlord in Colorado, getting comfortable with the major areas of the law is not optional.

The video above walks through the high-level landscape. The sections below cover the topics every Colorado landlord should understand at a minimum.

Security deposits

Colorado defines strict timelines for returning security deposits. Landlords must provide an itemized written statement of any deductions within one month after move-out, or up to 60 days if the lease specifies the longer window. Missing the deadline exposes the landlord to statutory damages — up to three times the wrongfully withheld amount plus attorneys' fees.

Warranty of habitability

Landlords are responsible for keeping the unit in a habitable condition: functioning plumbing, heat, electricity, weather protection, and any appliances provided with the lease. Tenants have legal remedies — including rent withholding and repair-and-deduct — when habitability issues aren't addressed in a reasonable timeframe. The habitability rules have been repeatedly strengthened since 2019, so what was acceptable five years ago may not be today.

Evictions and terminations

Evictions in Colorado are a formal court process; self-help eviction (changing locks, shutting off utilities, removing belongings) is illegal. The specific notice period depends on the reason — nonpayment, lease violation, or no-cause — and several Colorado municipalities including Denver have layered just-cause protections on top of state law that further restrict when and how a landlord can end a tenancy.

Fair housing and source of income

Federal and Colorado law prohibit discrimination based on race, color, religion, sex, national origin, familial status, and disability. Colorado adds additional protected classes — most importantly for landlords, source of income, which covers Housing Choice Vouchers (Section 8). You cannot decline an applicant solely because they intend to use a voucher. Screening criteria must be documented and applied consistently to every applicant.

Recent changes every landlord should know

• Warranty of habitability expansion (HB 19-1170 and follow-on amendments)
• Source-of-income discrimination protections (effective 2021)
• Statewide limits on pet deposits and pet rent
• Denver Just Cause Eviction Ordinance (2024)
• Rental application fee restrictions

Every one of these has changed what Colorado landlords can and can't do since 2019. A property manager who tracks these updates in real time is one of the highest-ROI hires a new landlord can make.