News and Information
Senior Exemption Applications
Senior Exemption Applications are currently being accepted through July 15. Please visit the Senior Exemptions page to learn more.
Qualified Senior Primary Residence Applications
Qualified Senior Primary Residence Applications were accepted through March 15. Please visit the Senior Exemptions page to learn more.
Qualifying Veteran with a Disability Exemption and Gold Star Spouse Applications
Qualifying Veteran with a Disability and Gold Star Spouse Exemption Applications are currently being accepted through July 1. Please visit the Veteran Related Exemptions web page to learn more.
Property Value Appeals for 2026
Business Personal Property Appeals were accepted June 15 through June 30, 2026
Real Property Value Appeals were accepted May 1 through June 8, 2026
The Assessor’s Office will mail Notices of Determination to property owners who filed on-time appeals on or before August 15, 2026. Property owners will have until September 15, 2026 to appeal their determination to the Board of Equalization.
Assessor Overview
The Assessor’s Office establishes values every two years for more than 120,000 properties within Boulder County, worth more than $120 billion in market value, using tools such as geographic information systems (GIS) and mass appraisal techniques to perform the appraisal analysis. Property values are used to set tax amounts which the Treasurer’s Office administers and collects.
Connect With Us
- Assessor/Treasurer Change of Address form.
- Ask a question about your Senior Exemption. Applications must be filed by July 15.
- Search for your Notice of Value (NOV) online.
