Boulder County Assessor's Office:
Online Real Property Value Appeal & Notice of Value (NOV) Search

Protect your home and help combat property fraud with FraudSleuth

1. Search for your Notice of Value:

For properties that have received corrected or amended NOVs, and have an extended appeal deadline, please use our
downloadable appeal form.

     Please enter your account number/schedule preceded by the appropriate letter:

        R - Real property (residential, business)
        M - Mobile home


Account No


  Examples: R1234567, M1234567  

2. Confirm property found


3. Review your property record

4. Search sales of comparable properties in your market area


5. Appeal your property value online

6. If desired, start a new Notice of Value Search