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How to send a lease violation notice in Colorado

In Colorado, a lease violation notice may be delivered by posting at the property, hand delivery; certified mail is not a listed method. The notice period is 10 days.

Last reviewed September 21, 2026 · Business research, not legal advice.
RequirementColorado lease violation notice
Delivery methodPosting at the property, hand delivery — Cortul also sends a First-Class copy.
Notice period10 days (calendar days)
Deemed receivedWhen it is served
If refused or unclaimedkeep the certified record.
Statutes
C.R.S. §13-40-104

Step by step

  1. Write the notice with every required element (the Colorado template in Cortul already has them).
  2. Verify the recipient's mailing address with USPS.
  3. Serve it the way Colorado law requires (hand delivery or posting at the property); mail alone doesn't serve it. Record the service in Cortul, which also mails a First-Class copy.
  4. Keep the mailing and tracking records, and your own record of any service you did yourself.
  5. Calendar the deadline from the mailing date.