Colorado property tax appeal deadlines and filing windows for commercial real estate. Verify with your local assessor or appeal board for the specific jurisdiction before filing.
Verify before filing. Statutory deadlines change, and many counties operate on their own schedule inside the state framework. Always confirm the current year's window with the assessor or appeal board for the specific jurisdiction before relying on a date.
State-level deadlines plus major sub-jurisdictions where the schedule diverges from the state default. Where a column says "Varies," confirm the date with the local assessor.
| Month | Type | Event | Date | Details |
|---|---|---|---|---|
| April | BPP | Filing Deadline |
15-Apr | |
| May | RP | Value Notices Issued |
1-May | |
| May | BPP | Value Notices Issued |
May-Jun | |
| June | RP | Appeal Deadline |
1-Jun | |
| June | BPP | Appeal Deadline |
30-Jun | |
| December | Both | Abatement Deadline |
31-Dec | Abatement petitions may be filed within two years of the date the taxes were due, provided that: the property valuation has not been previously protested, and the person or entity filing for abatement was the owner of record for the year(s) being abated. |
RP = Real Property · BPP = Business Personal Property · Both = Applies to both
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