The notices and their periods
- 10-Day Demand for Rent or Possession — for nonpayment (C.R.S. § 13-40-104(1)(d)) — 10 days to pay or move out, raised from 3 days in 2021. A landlord with an “exempt” single-family agreement can use a 5-day notice if the lease says so.
- 10-Day Notice to Comply or Vacate — for a curable lease violation — 10 days to fix the problem (C.R.S. § 13-40-104).
- 3-Day Notice to Quit (substantial) — for a substantial or non-curable violation — illegal activity, violence, or major property damage — with no opportunity to cure.
Ending a tenancy and serving notice
Under the 2024 for-cause law (HB24-1098), a Colorado landlord generally needs cause to evict or to refuse to renew a lease. No-fault terminations are allowed only in specific situations (for example, demolition or conversion, substantial repairs, or owner/family move-in) and require 90 days' notice. A no-fault periodic termination, where permitted, takes 21 days' notice for tenancies under a year and 91 days for tenancies of a year or more (C.R.S. § 13-40-107).
Notices must be personally served or left with a household member 15 or older. The landlord then files a Forcible Entry and Detainer (FED) action in county court; a tenant who pays all rent owed before judgment is entitled to dismissal.
Colorado now requires cause to evict
Two big changes: in 2021 the nonpayment notice grew from 3 days to 10 days, and in 2024 HB24-1098 made Colorado a for-cause state — a landlord can no longer simply decline to renew or end a tenancy without one of the law's enumerated reasons, and no-fault grounds carry a 90-day notice. This is a frequent source of outdated advice; the old 3-day, no-reason approach is no longer valid.
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How many days' notice for nonpayment in Colorado?
10 days to pay or quit (C.R.S. § 13-40-104(1)(d)) — up from 3 days since 2021. An exempt single-family agreement can use 5 days if the lease provides for it.
Can a Colorado landlord evict without a reason?
Generally no. Since HB24-1098 (2024), a landlord needs cause to evict or to refuse to renew; no-fault terminations are limited to enumerated grounds and require 90 days' notice.
How much notice to end a month-to-month tenancy in Colorado?
Where a no-fault termination is permitted, 21 days for tenancies under a year and 91 days for tenancies of a year or more (C.R.S. § 13-40-107).
More notice types: Pay or Quit · Cure or Quit · Unconditional Quit · eviction notices overview. By state: California · Texas · Florida · New York · Illinois · Pennsylvania · Ohio · Georgia · North Carolina · Michigan · New Jersey · Virginia · Washington · Arizona · Massachusetts · Tennessee · Indiana · Missouri · Maryland · Wisconsin · Minnesota · South Carolina · Alabama · Louisiana · Kentucky · Oregon · Oklahoma · Connecticut · Utah · Nevada · Iowa · Arkansas · Mississippi · Kansas · New Mexico · Nebraska · Idaho · West Virginia · Hawaii · New Hampshire · Maine · Montana · Rhode Island · Delaware · South Dakota · North Dakota · Alaska · Vermont · Wyoming · Washington, D.C..
WriteMyNotice.com is a self-help document preparation service, not a law firm, and this page is general information, not legal advice. Eviction rules are strict and vary by state, county, and city — many cities add rent-control or just-cause requirements on top of state law, and an improper or mistimed notice can get an eviction case delayed or dismissed. Verify the current requirements for your property's location and, for contested or high-stakes evictions, consult a landlord-tenant attorney. Statute references verified June 2026.