Notice of Determination for Property Valuation Appeals
The Assessor’s deadline to mail determinations of property value appeals is August 15. If you disagree with the Assessor’s determination, you can file a written appeal to the Board of Equalization (BOE) on or before September 15.
Business Personal Property
Ask a Question about Your Property
- Ask a question about your Business Personal Property.
Business Personal Property value appeals are accepted as on-time June 15 through June 30 each year.
- Ask a Real Property question.
Real property appeals are accepted as on-time May 1 through June 1 each year.
Search for your Notice of Value (NOV) online.
Property Information, Mapping, & Data
Property Data Download
- The Assessor’s Office policies reflect those of Boulder County, outlined in the Colorado Open Records Act (CORA).
- Recent Sales Activity—lists of sales for specified time frames. These lists are not intended to be used for real property assessment appeals.