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Posted on: May 23, 2023

Jeffco Property Value Appeals Due by June 8

Jefferson County neighborhood with mountains in the background and property value appeals in text.

Jefferson County property owners should have received a Notice of Valuation in the mail reflecting an update in property value. If you believe the Jefferson County Assessor’s Office incorrectly valued or classified your property, you can file an appeal. The appeal must be filed by June 8. You can find information on how to file an appeal on the Assessor's website or by mailing back the appeal form on the postcard you should have received. Appeal decisions will be made on or before Aug. 15. If you still disagree with the Assessor’s Office's valuation, you may file an appeal with the County Board of Equalization (CBOE) on or before Sept. 15.

How does Jeffco compare to other counties in the Denver Metro Area?
Jefferson County saw the third lowest median residential percentage increase in the Denver Metro Area. Denver County saw the lowest increase at 33% and Douglas County saw the highest at 47%.
Why are reappraisals necessary and how are the results used?
State law requires every county in Colorado to revalue property every two years, with values set at what properties were worth on June 30 every even numbered year. Those set property values are then used to help determine property taxes.
How are property taxes calculated?
The formula to calculate property taxes is:
Actual Value x Assessment Rate = Assessed Value x Mill Levies
The assessment rate is determined by the Legislature and the Mill Levies are determined by taxing authorities in your area, including cities, counties, school districts, fire districts, etc.


  • Seniors over 65 who have occupied their home as their primary residence for over ten years as of Jan. 1 qualify for a state-funded property tax exemption. For those who qualify, fifty percent of the first $200,000 of actual value of the home is exempted from taxes, and this reduction is noted only on the homeowner’s tax bill. Qualifying senior citizens must submit their application to the Assessor’s Office prior to July 15, and once approved there is no need to reapply. Forms are available on the Assessor website.
  • A similar exemption is available for veterans who have been rated by the United States Department of Veterans Affairs as having a 100% “permanent and total” disability. Application for this type of exemption is made to the Division of Veterans Affairs by July 1; the application and other important information are available on the Assessor website.

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