See Marshall Fire Recovery or call 303-413-7730 for assistance, resources and information on the Marshall Fire.

County offices are closed for Martin Luther King, Jr. Day on Jan. 17. Public safety services continue on a regular schedule and the DAC is open.

Senior Tax Exemption

Senior Homestead Property Tax Exemption

The Colorado Constitution establishes a property tax exemption for qualifying senior citizens, surviving spouses of senior citizens who previously qualified, and for Disabled Veterans.
If you wish to apply for the exemption, and qualified as of January 1, 2022, and wish to receive a form to fill out, you may call our office at 303-441-3530, or email .


The deadline for 2022 applications is July 15.

Effect on Taxes

  • The exemption goes into effect for tax year 2022.
  • The discount will first appear on the tax bill sent in January 2023.
  • The exemption remains in effect until a disqualifying event occurs, such as:
    • Sale of property
    • Property is moved into a trust, LLC or other legal entity, or
    • Surviving Spouse, or
    • Home destroyed by a natural disaster


To qualify to apply for the 2022 tax year (payable in 2023), seniors:

  • Were born on or before January 1, 1957, and
  • Lived in the home continuously starting before January 1, 2012, and
  • Owned the home continuously starting before January 1, 2012.

Exemption Amount

For those who qualify, 50 percent of the first $200,000 in actual value of their primary residence is exempted, for a maximum exemption amount of $100,000 in actual value. The State of Colorado pays the property taxes on the exempted value.

Instructions & Application Forms

Applications are also available at the Assessor’s office, senior centers and other locations.

If you have any questions, please email .

Contact Us

Main phone: 303-441-3530
Main fax: 303-441-4996

Business Personal Property
fax: 303-441-1783


Schedule a meeting

Mailing Address
Main: PO Box 471
Boulder, CO 80306-0471


Assessor Boulder & Longmont Drop Boxes

1325 Pearl Street, 2nd floor
Boulder, CO 80302
Mondays thru Thursdays
Hours: 7:30 am–5 pm
Map & Directions

515 Coffman Street, Suite 114
Mondays ONLY
Hours: 7:30 am–5 pm
Map & Directions

1376 Miners Drive, Unit 105
Tuesdays ONLY
Hours: 7:30 am–5 pm
Map & Directions