Note: The dates below apply each year. If a deadline falls on a weekend or holiday, the date is moved to the first working day after the weekend or holiday.
January 1: Assessment Date for all Personal Property
April 15: Declaration Schedules due to county assessor Deadline to request a filing extension
June 15: Deadline for assessor to mail Notice of Valuation
June 30: Last day to protest to county assessor
June 15 - July 5: Assessor personal property protest hearings
July 10: Deadline for assessor to mail Notice of Determination
July 1 - August 5: County Board of Equalization hears personal property appeals
View the full Assessment Calendar. Note that some counties follow an alternate appeals process that affects some of the above appeal deadlines. (Refer to ยงยง 39-5-122(2), 39-5-122.7(1), and 39-8-106(1), 107(2), C.R.S., or contact your county assessor for more information.)