Assessor

Real Property 2025 Reappraisal Notification

On May 1, 2025, a Notice of Value will be mailed to all Adams County property owners. If you believe the value assigned to your property is incorrect, you have the right to appeal between May 1, 2025, and June 8, 2025, pursuant to state statute C.R.S. §39-5-122(1). (Since June 8 falls on a Sunday this year, you will have until midnight on June 9 to file your appeal.)

If you choose to appeal your value, you will have several options:

Mail:  Your appeal may be mailed in via USPS either by sending in your postcard or by writing in an appeal stating why you feel your value is incorrect. This must be postmarked no later than June 8. 

Mail to: 

Adams County Assessor’s Office

4430 South Adams County Pkwy, STE 2100

Brighton, CO  80601

Online: Your Notice of Value will include an option to file an online appeal using an appeal code provided specifically for the property you are appealing. This code can be found on the Notice of Value postcard you will receive in the mail. If you do not receive the postcard for any reason, this option will not be available. This option is available only until midnight on the last day of the appeal period.

Email: You may email your appeal to assessor@adcogov.org, including identifying information about your property and the reason for your appeal. We will send a reply confirming receipt of your appeal. If you do not receive a confirmation, please contact us to ensure it was sent. This option is available only until midnight on the last day of the appeal period.

Fax: You may fax your appeal to 720-523-6037. This option is also available only until midnight on the last day of the appeal period.

In Person: Appraisers will be available to speak with you about your property value during the appeal period, from May 1, 2025, to June 8, 2025, between 8:00 a.m. and 4:30 p.m., Monday through Friday. Appeals can be made at the Government Center Conference Center, located at 4430 South Adams County Parkway, Brighton, at the northwest entrance of the building.

New changes for 2025 are the assessment rate changes

Click the link to see the rate changes: Rate Changes table 

Click the link for Senate Bill 2024-233: Senate Bill 2024-233

Click the link for Senate Bill 2024B-1001: Senate Bill 2024B-1001

Emergency Mortgage Assistance Program

You may receive help with past-due housing payments, property taxes, insurance or housing utilities.

Click the link to find more details in English or in Español.

Assessor’s Office Information

Appeals Calendar

Real Property Notice of Valuation – click here

Residential Comparable Sales Search Interactive Map 

Click here to view map

Letter of Authorization Requirement

The owner is the only person recognized by law to have "standing" to file an appeal. Appeals filed by individuals other than the owner or authorized agent may be denied for lack of standing. A notarized letter of agency (written letter of authorization) is required from persons or agencies, including attorneys who are not the owner of record but are filing an appeal on behalf of the property owner.

If the Notarized Letter of Authorization isn't filed with the initial appeal, then the appeal will not be accepted at the Assessor Level, and you will have to wait until the following year to file an abatement.