Assessor's Office

Valuing Property

    The Assessor’s Office establishes values every two years for more than 120,000 properties, worth nearly $50 billion in market value. The agency uses tools such as geographic information systems (GIS) and mass appraisal techniques to perform appraisal analysis.

    The Assessor discovers and lists information about properties and uses this information to determine property values.

Property Information & Mapping

    New online Property Search tool:

  • Works on most mobile devices.
  • Can be used with more web browsers.
  • Makes looking up property information easier.
  • Provides access to more property information.
  • Makes appealing property values online easier.

2013 Boulder Flood

About Business Personal Property

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.

Senior Tax Exemption

    The Senior exemption program has been funded by the State of Colorado for 2014 and will be reflected on the January 2015 tax bills for all qualified applicants. Deadline for the application is July 15, 2014.

    Senior Tax Exemption Forms and Instructions

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.

Information Collection

The Assessor’s Office gathers and maintains information on properties, including:

  • Ownership
  • Location
  • Use
  • Sales
  • Building measurements
  • Construction type
  • Construction costs
  • Rental income, if applicable

Sources for this information are:

  • Real property deeds and declarations
  • Subdivision maps
  • Building permits
  • Local building contractors
  • Property owners
  • Declarations filed by owners of taxable personal property
  • Onsite inspections by staff

Learn more about:

Assessor Logo

Jerry Roberts, Assessor

Jerry Roberts

Meet the Assessor

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Contacts

Assessor

Main: 303-441-3530
Alternate: 303-441-4830
Fax: 303-441-4996
 
Mailing Address
Main: PO Box 471
Boulder, CO 80306-0471
 
assessor@bouldercounty.org
 
bouldercountyassessor.org
 
Business Personal Property
Main: 303-441-3316
Fax: 303-441-1783
 
Mailing Address
PO Box 1759
Boulder, CO 80306-1759

Boulder

1325 Pearl St., 2nd floor
Boulder, CO 80302
Map & Directions
Hours: 8 a.m.-4:30 p.m. M-F

Longmont

529 Coffman Street, Suite 120
Map & Directions
Hours: 8 a.m.-4:30 p.m.
Mondays ONLY

Lafayette

1376 Miners Dr., Unit 105
Map & Directions
Hours: 8 a.m.-4:30 p.m.
Tuesdays ONLY

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