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.
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.
Applications must be postmarked by July 15 to be on time. To ensure your application is delivered on time Senior exemptions can be dropped off at:
- Boulder: Downtown Boulder Courthouse Complex, 1325 Pearl Street. Use the mail slot on the Treasurer’s Office door on the east side of the main (middle) building of the 3-building complex.
- Longmont: St. Vrain Community Hub, 515 Coffman Street. Use the HHS drop box on the west entrance (Terry St. side) of the building.
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.