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Statute-validated • PDF with proof of service
Colorado's Senate Bill 21-173 introduced tiered notice periods for non-renewal based on how long the tenant has lived in the property. Serving the wrong notice period — particularly a short one for a long-term tenant — voids the notice.
| Tenancy Length | Required Notice |
|---|---|
| Less than 6 months | 21 days |
| 6 months – 1 year | 28 days |
| 1–2 years | 91 days |
| 2–3 years | 91 days |
| 3+ years | 91 days |
The 91-day requirement for tenants of 1+ year is one of the longest in the country. NoticeGen calculates the correct tier automatically.
Colorado does not have a statewide just cause eviction requirement (outside of specific local ordinances). A non-renewal can be served without stating a reason, as long as proper notice is given.
Not legal advice.