Appeal Process & Abatement

Assessor Level Real Property Appeals

Appeals for real property value or its classification are held May 1st thru June 1st. During this time you may appeal your value by mail, email, fax, or in person. (Should these dates fall on Saturday, Sunday, or legal holiday, it shall be deemed to have been timely filed on the next business day.)

Real property is reappraised by the Assessor’s Office every odd-numbered year. The value determined by the Assessor for the year of reappraisal is generally used for the intervening year also.  The actual value of real property is based on its value as of the appraisal date, which is June 30 of the year prior to the reappraisal year.

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 the value is from the 24-month period ending June 30 of the year prior to the reappraisal year. If you purchased your property, or if you had an appraisal done after June 30 of the year prior to the reappraisal year, we cannot consider it in our review for the reappraisal year. We review appeals for the valuation of the property only, not the amount of taxes you pay.

Appeals Calendar

Notice of Determinations

Notice of Determinations were mailed as of August 15, 2019.  

If you agree with the Assessor’s Decision, then no further action is required. If you disagree with the decision you then have 30 days to mail a copy of the completed form you received in the mail to:
4430 South Adams County Pkwy C5000A
Brighton, CO  80601
 All forms must be postmarked by September 16, 2019, in order to reserve your right to appeal.
You will then receive a notice of a time and date of a hearing to the Board of Equalization.
All hearings will be heard between September 1 through November 1
If you are dissatisfied with the decision of the County Board of Equalization you may then continue your appeal to a ONE of following
Board of Assessment of Appeals or District Court
1313 Sherman Street, Room 315   1100 Judicial Center Drive
Denver, CO  80203   Brighton, CO  80601
303.864.7710   303.659.1161    

Binding Arbitration

For a list of Arbitrators contact the County Commissioners at the address listed for the County Board of Equalization
For additional instructions click the link below:

Abatement Information

We do not accept Petition for Abatement via email. You must send the original documents by mail or present them in person.

The abatement process is used to correct taxes that have been levied erroneously or illegally due to erroneous valuation for assessment, irregularity in levying, clerical error, or overvaluation,
§ 39-10-114(1)(a)(I)(A), C.R.S.

Abatement petitions may be filed within two years of the date the taxes were levied (January 1st), 39-10-114(1)(a)(I)(A) C.R.S. provided that:

  • The property valuation had not been previously protested.
  • The person filing for abatement was the owner of record for that year(s)

A taxpayer has until the first working day of the January, following the two year deadline, to file the petition.

The Assessor’s Office will review the submitted abatement petition and will recommend approval or denial to the Commissioners. The Commissioners may authorize the Assessor to approve petitions for abatement or refund for $10,000 or less in taxes, per schedule, per year, provided the petitioner and the assessor mutually agree to an adjustment.

This appeal process is similar to a protest filed during May, but can take many months to complete.

You may also contact the Assessor's Office for more information or questions concerning the abatement procedure at 720.523.6038.

Instructions for Filing a Petition for Abatement or Refund of Taxes
Petition for Abatement or Refund of Taxes 1-year 
Petition for Abatement or Refund of Taxes 2-year