Protest Property Values

Protesting Your Property Value for the 2024 Tax Year

If you disagree with the valuation and/or classification of your property, you have the right to protest. The window to file a protest for the 2024 tax years is May 1, 2024 through June 10, 2024.
For the 2024 property value assessment, your property was valued as it existed on Jan. 1, 2024. The value of residential property is based on the market approach to value. Generally, the value of all other property is based on consideration of the market, cost, and income approaches to value. The appraisal data used to establish value is from the 24-month period ending June 30, 2022. Data from prior years (up to a period of five years preceding June 30, 2022) may have been considered if base period data for that property subclass was found to be insufficient.



You may file online by following these steps: 

Step 1.Find Your Property

Visit the Denver Property Taxation and Assessment System to find your property.

Step 2.Enter Your Address

Once there, select the "Real Estate" radio button, type in your address in the search bar, then click "Search".

Step 3.Find your Results

Scroll down the page. Under "Results", click your address (it is a link).

Step 4.Click the "Assessment Protest" Tab

On the page with your address/property information, click the "Assessment Protest" tab in the middle of the page.

Step 5.Follow the Instructions

Follow the instructions that appear to complete the protest process. The protest window is May 1-June 10, 2024.

If you have questions, call the Protest Line at 720-913-4164.

By Mail

To protest your 2024 property value, download and fill out the 2024 Property Value Protest Form(PDF, 87KB)

Once the form is filled out and signed, you can mail it to:

Department of Finance
Assessment Division - Real Property Protest
201 W. Colfax Ave. #406
Denver, CO 80202 

If you have questions, call the Protest Line at 720-913-4164.


You can drop of a completed 2023 Property Value Protest Form in-person at by visiting the Assessment Division, located on the fourth floor of the Wellington E. Webb Municipal Office Building, located at 201 W. Colfax Ave. Denver, CO 80202.

If you have questions, call the Protest Line at 720-913-4164.

What is a protest?

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.

Why protest (or appeal)?

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 January 1 of every year.

What happens after I protest?

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.

Prior Year Appeals

2022 and 2023 Tax Years: An abatement petition may be filed for 2022 and 2023 at this time. The petition for 2022 must be filed no later than January 2, 2025.

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