The Gilpin County Slash Site is now open for the season


Property Protest Process


File your Gilpin County Property Protest Online

Colorado Statutes identify the month of May as the time for you to contact us concerning your Real Property, Vacant Land or Mining Claim valuation. Please keep in mind that you should provide information to support your estimate of value if it differs from that estimated by the Assessor’s Office.

Your value is our estimate of the value of the property as of June 30, 2022. This date is set by law. We can only consider sales and other market information from January 1, 2021 through June 30, 2022 for values set for 2023 and 2024.


  1. We consider appeals for your property valuation only, not for the amount of taxes you owe.
  2. If you purchased your property, or if you had an appraisal done after June 30, 2022, we cannot consider it in our review of values for 2023 or 2024.

*Values are based on condition and level of completion as of the January 1 Assessment Date.

During the month of May, you may appeal your property value using:

Online Form: Between May 1 and June 8, you can submit an Online Protest Form with your name, property address or location, account number or parcel number, phone number, and the reason you are appealing your value. Notice: Please use one Protest Form for each property being protested.

We cannot accept telephone appeals. All appeals must be in writing.

No late appeals of real property can be considered. For 2024, the last day to appeal your value to the Assessor is June 10, 2024 by end of business day. All written appeals must be filed online or postmarked by that date.

A written Notice of Determination will be issued for each appeal and will be mailed no later than June 30, 2024.