Appeal Guide

Reminder for Real Property: The appraisal date for 2019 to 2020 property values is June 30, 2018.  No sales after this date will be used.
Reminder for Personal Property:  Values were set from Declarations returned to us by April 15, 2019 for the status as of January 1, 2019.

To see abatement forms for prior values, please visit: 
Colorado Department of Local Affairs online resource.

  1. Real Property
  2. Personal Property
  3. Taxpayer Rights for Further Appeals

Important Dates


  • May 1 - Notices of Valuation are mailed
  • May 1 - Protest process begins
  • June 3 - Last day to submit protest (postmarked no later than this day)
  • June 30 - Assessor mails a Notice of Determination

Protest Options


Options to protest the value (please choose only 1 of the 3): 
  • By Mail:
    Pitkin County Assessor, 530 E. Main St Suite 204, Aspen, CO  81611
  • In Person:
    Pitkin County Administration Building, 530 E. Main St Suite 204, Aspen, CO
    To speak to an appraiser, arrive between 10 am and 3 pm, Monday through Friday
  • By Fax:  970-920-5174

Agent Authorization


If an agent is appointed to act on behalf of the owner, please submit a signed agent authorization form.