Landlord notice deadlines — Colorado
In Colorado, the checked deadlines on this page cover: pay or quit, ending a tenancy, raising the rent. Each figure carries its statute and the stamp Rules checked October 2026. Run your exact dates through the checker — the period is only half the answer; the counting rule is the other half.
| Pay or quit | 10 calendar days — the tenant may pay and cure (Colo. Rev. Stat. § 13-40-104(1)(d)). 10 days to pay or quit. Landlords exempt from the just-cause law (generally 5 or fewer units, owner-managed) give 5 days. |
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| End a tenancy | 90 days — no-fault termination, tenancy 1 year or more (covered landlord) (Colo. Rev. Stat. §§ 13-40-107, 38-12-1303). Colorado's just-cause law (HB 24-1098): a no-fault termination needs 90 days' written notice stating the legal and factual basis, plus a mediation advisement. See the just-cause routing for this state. 91 days — month-to-month (exempt small landlord) (Colo. Rev. Stat. § 38-12-1303). Exempt-landlord notice ladder: 91 days at 1 year or more of tenancy, 28 days at 6–12 months, 21 days under 6 months. |
| Raise the rent | 30 days (Colo. Rev. Stat. § 38-12-701). No state cap, and cities are barred from creating one. Notice is 60 days once a tenancy has lasted six months or longer. 60 days — tenancy of 6 months or longer |
| How days are counted | No Colorado counting rule (weekend/holiday treatment) was verified from a primary source for this dataset. |
| Allowed service methods | personal delivery leaving with a person 15 or older at the unit posting in a conspicuous place on the premises |
| Just cause | Cause is required. Most residential tenancies under HB 24-1098, Colo. Rev. Stat. § 38-12-1303; small owner-managed landlords (generally 5 or fewer units) and some other categories are exempt. After 12 months, do not print a bare no-cause date: the landlord must have a statutory cause, or use a listed no-fault ground with 90 days' notice, a stated legal and factual basis, and a mediation advisement. |
| Sources checked | https://www.tenantcloud.com/laws/colorado https://articles.ezlandlordforms.com/state-landlord-tenant-law/colorado-landlord-tenant-law-and-regulations/ |
Local rules sit on top of state law in many places — city just-cause lists, rent boards, and prescribed local forms. A state deadline is the floor of the analysis, never a promise that no local rule adds to it.
The paper that goes with the date
The checker gives you the date. The kit gives you the notices: pay or quit, non-renewal / termination, and rent increase letters generated from these same checked deadlines, a letter builder that fills in your dates and names, the move-in and move-out inspection checklists, and the proof-of-service checklist.
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