Colorado's security deposit deadline starts with two questions: when did the rental agreement terminate, and when did you surrender the key or possession?
The landlord generally must return the deposit or send the required written statement within 30 days after termination of the rental agreement or surrender of the key, whichever is later.
The lease can extend the deadline
Your lease may give the landlord a longer period, but Colorado does not allow that period to exceed 60 days. That means the deadline is usually:
- 30 days, if the lease does not lawfully extend it
- the lease period, if it is longer than 30 days but not more than 60 days
Do not assume the deadline is always 30 days. Read the lease, then keep the date records.
If the written statement is late
If the landlord keeps any part of the deposit, the landlord must send a written statement listing the exact reasons and the remaining balance. If the landlord does not send the statement within the applicable period, Colorado says the landlord forfeits the right to withhold any portion of the deposit.
Watch this step
Before filing for stronger wrongful-retention recovery, send a seven-day written demand. The demand should ask for return of the deposit and state that you intend to file legal proceedings if the issue is not resolved. Keep proof of delivery.
What proof to keep
Keep:
- the lease deadline language
- termination or lease-end records
- key-return or possession-surrender proof
- your current mailing or forwarding address notice
- move-out photos and videos
- the landlord's written statement and documentation
- delivery proof for any seven-day demand
Sources used for this guide
Source reviewed: April 2026.
The Colorado Recovery System keeps the deadline, written statement, seven-day demand, and final escalation in order.
Get the Colorado Recovery SystemRelated pages
- Colorado demand-letter guide
- Colorado statute guide
- What Colorado landlords can deduct
- Move-out checklist
Important
This page provides general educational information and is not legal advice.