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Current options for protesting your property value:

2018 Tax Year - the statutory deadline to appeal to the Assessor for the 2018 tax year has passed. A "prior year appeal" can be filed for 2018 beginning January 2, 2019.

Prior year appeals

2016 & 2017 Tax Years: An Abatement Petition may be filed for 2016 & 2017 at this time; the petition must be filed no later than January 2, 2019.

Find the BoCC Petitions for Abatement or Refund of Taxes forms along with instructions on the Assessor's Office - Online Forms page.

Frequently Asked Questions

A protest is an opportunity to demonstrate to the appraisal staff in the Assessor’s Office that your property’s assigned value or classification is inaccurate.  Your protest should provide evidence to support your position. 

Reasons to appeal include:
  • Incorrect property characteristics – property square footage, condition, bath count, use, etc.
  • Estimated value is too high – provide market data to support a reduction in value.
  • Incorrect property classification – the assessor is required to classify property based on the actual use as of Jan 1st of every year. 

After a protest is submitted, it is assigned to a member of the appraisal staff who will review the information presented and make a determination.  A determination can either be to adjust the assigned value/classification, or deny the appeal and retain the current assigned value.  The Assessor will notify you of the determination.


Online & Downloadable Forms




Webb Municipal Office Building
201 W. Colfax Ave., Dept. 406
Denver, CO 80202
Phone: 720-913-1311
Fax: 720-913-4101

Business Hours
Monday - Friday
8:00 a.m. - 4:30 p.m.


Denver 311 Help Center Call 3-1-1
Outside Denver Call 720-913-1311
Emergencies: 911 
TTY Service: 720-913-8479