State guides / CO
Colorado property tax appeals
Served
- Nothing upfront
- Nothing if no reduction
- Online, no call
- Deadline
- Colorado real-property protests must be postmarked, delivered, or given to the assessor by 1 June 2027. (Colo. Rev. Stat. 39-5-122)
- First level
- County assessor (objection and protest, 39-5-122)
- Next levels
- County board of equalization (39-8-106, 39-8-107); Board of Assessment Appeals, district court, or binding arbitration, each within 30 days of the county board denial (39-8-108, 39-8-108.5)
General information, not legal or tax advice. The notice and local rules control.