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Free Colorado Lease
Extension Addendum Template

The agreement is signed by the same parties as the lease it attaches to.

Last reviewed September 2026

Written by LawLease Editorial

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Colorado Lease Extension Addendum

This Lease Extension Addendum is built with Colorado as the governing state. These are the Colorado landlord-tenant rules that most often bear on it, with the statute for each.

Colorado rules at a glance

Colorado rules for a Lease Extension Addendum
Month-to-month termination21 days under the common reading — 28 or 91 days if the tenancy is read by total length; cause is required for most tenants of 12+ monthsC.R.S. §13-40-107
Rent increasesOnce per 12 months; 60 days’ written notice where there’s no written leaseC.R.S. §§38-12-701, -702
Rent controlCounties and cities are barred from enacting rent control on private residential property (§38-12-301).

Rent, late fees & rent increases

  • Late-fee cap — A late fee can’t be charged until rent is at least 7 calendar days late, can’t exceed the greater of $50 or 5% of the past-due rent (in total, for any one late payment), and must be disclosed in the lease. A landlord can’t evict, or terminate a tenancy, because the tenant hasn’t paid late fees, and a non-compliant lease clause is void (§38-12-105).
  • Once a year — Rent may not be increased more than once in any 12-month period of consecutive occupancy, whatever the lease says (§38-12-702).
  • Increase notice — Where there’s no written lease, an increase requires at least 60 days’ written notice, and a landlord can’t serve a notice to quit to get around that rule (§38-12-701). With a written lease, the lease’s notice terms govern, subject to the once-a-year limit.
  • Total-price rules — Since January 1, 2026, an advertised or offered rent must be shown as a total price that includes mandatory fees (other than actual utility costs), and landlords can no longer charge certain fees — including common-area maintenance fees, property-tax pass-throughs, and payment-processing fees when no free way to pay is reasonably available (C.R.S. §6-1-737, added by HB25-1090).
  • Rent control — Counties and cities are barred from enacting rent control on private residential property (§38-12-301).

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