News & Information
Assessor’s Office Status
All Assessor’s Office locations (the main location in Boulder as well as remote offices in Longmont and Lafayette) are closed to walk-in traffic until further notice.
Staff are available online and by phone during regular business hours to take your questions or schedule appointments. Please call 303-441-3530, or email Assessor@BoulderCounty.org.
Valuation Appeals—Notice of Determination
The Assessor’s deadline to mail determinations of property value appeals is September 16. If you disagree with the Assessor’s determination, you can file a written appeal to the Board of Equalization (BOE) on or before September 28.