Assessor's Office

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 Value Appeals

About Business Personal Property

Ask a Question about Your Property

  • Business Personal Property appeals were accepted as on-time June 15 through June 30.
    Ask a question about your business personal property.

Property Information and Mapping

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.

Fourmile Canyon Fire

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:

Jerry Roberts, Assessor

Meet the Assessor

 Related Links


Contacts

Assessor

Main: 303-441-3530
Alternate: 303-441-4830
Fax: 303-441-4996
 

Business Personal Property
Main: 303-441-3316
Fax: 303-441-1783
 

www.bouldercountyassessor.org

Boulder

1325 Pearl St., 2nd floor
Map & Directions
Hours: 8 a.m.-5 p.m. M-F
 

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

Business Personal Property
PO Box 1759
Boulder, CO 80306-1759

Longmont

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

Lafayette

400 E. Simpson, Suite 105A
Map & Directions
Hours: 8 a.m.-4:30 p.m.
Tuesdays ONLY

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