Assessor's Office

The Assessor’s Office has Moved (Temporarily)…

To 1333 Iris Avenue

from late summer 2018
to early January 2019…

To accommodate our downtown Boulder office reconstruction project.
Temporary Location (starting August 27): 1333 Iris Ave. at the southeast corner of Boulder County’s North Broadway campus (see map).

Hours will remain the same:
Monday through Friday, 8 a.m. to 4:30 p.m.
Please call our office at (303) 441-3530 with any questions.

For more information, please see our news release.

Business Personal Property

• Business Personal Property Overview
• About Business Personal Property Declarations
• File Online for Business Owners (Available to businesses who received a postcard in lieu of a full declaration.)
  Deadline for filing declarations was April 17.
• Business Personal Property value appeals were accepted as on-time June 15 through July 2 this year.
  Ask a question about your business personal property.

Property Information, Mapping, & Data

Property Search

• Property Search
• Property Search Help

Property Data Download

• Downloadable Data Sets

Records Policies

• The Assessor’s Office policies reflect those of Boulder County, outlined in the Colorado Open Records Act (CORA).

Comparable Property Sales

• Current 2017/2018 Tax Year Base Period Sales

Recent Sales

• Recent Sales Activity—lists of sales for specified time frames. These lists are not intended to be used for real property assessment appeals.

Real Property Value Appeals were accepted May 1 through June 1, 2018

The Assessor’s Office will mail Notices of Determination to property owners who filed on-time appeals at the end of August, 2018. Property owners will have until September 15, 2018 to appeal their determination to the Board of Equalization.

Valuation Appeals—Notice of Determination

• About your Notice of Determination
• Assessment Calendar

Ask a Question about Your Property

• Business Personal Property appeals are accepted as on-time June 15 through June 30 each year.
  Ask a question about your business personal property.
• Real Property appeals are accepted as on-time May 1 through June 1 each year.
  Ask a question about your real property.
  Search for your Notice of Value (NOV) online.

Senior 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.

• Senior Tax Exemption Qualifications and Amount

Learn more about:

• The Assessment Process
• Business Personal Property
• Agricultural Land
• Tax Exemptions for Seniors & Disabled Veterans
• Additional Resources