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.
Property Value Appeals were accepted May 1 through June 1, 2020
The Assessor’s Office will mail Notices of Determination to property owners who file on-time appeals on or before September 16, 2020. Property owners will have until September 28, 2020 to appeal their determination to the Board of Equalization.
Business Personal Property Declaration Deadline Extended
Online filing opened Feb. 1, and is available to businesses who received a postcard in lieu of a full declaration. Deadline for filing declarations has been extended to June 15. For more information…
The Colorado Constitution establishes a property tax exemption for qualifying older adults, surviving spouses of those who previously qualified, and for disabled veterans. Applications must be filed no later than July 15 for the exemption to apply to your tax bill next year.