Appeal Guide

The appraisal date for 2021 to 2022 property values is June 30, 2020.  No sales after this date will be used.  Qualified sales from 07/01/2018 to 06/30/2020 were used to set new values.
  1. Real Property
  2. Personal Property
  3. Protest Tips
  4. Taxpayer Rights for Further Appeals
  5. Abatements

Important Dates

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

Protest Form

2021 Protest Form
We also request clarification on which property is being protested, so include an account number, parcel number, or physical address along with owner's name.  To look up your account information, visit our database site.

Protest Options

Options to Protest the Value (please choose only 1 of the following): 
  • Email to
  • Mail:
    Pitkin County Assessor 
    530 E. Main St.
    Suite 204
    Aspen, CO 81611
  • In Person (if our building opens, which it is not open yet):
    Pitkin County Administration Building
    530 E. Main St.
    Suite 204
    Aspen, CO 81611
    To speak to an appraiser in person, please call to set up an appointment.  Appointment times will be between 10 am and 3 pm, Monday through Friday.
  • Fax:  970-920-5174
Agent Authorization
The Assessor sets the value, not the taxes, thus, only the value can be protested. If an agent is appointed to act on behalf of the owner, please submit a signed Agent Authorization Form (PDF).