Boulder County Assessment Information
Assessor's Office earns coveted Distinguished Assessment Jurisdiction award Senior Property Tax Homestead Exemption Info   Disabled Veteran Property Tax Exemption Info   2008 Online Appeals On-Line Notice of Value Search View your Residential Notice of Valuation (NOV) and the Residential Comparable Sales Map for your property, and/or file an online appeal. You will need your Account Number and Access PIN number from your Residential NOV to access this information.
The Appeal Process - English & Spanish	The Assessment Process
List of Sales - Comparable Properties: Residential Homes, Condos & Apartments Vacant Land Sales	Downloadable Residential Neighborhoods Map: Adobe PDF 0.5 Mb       JPEG (1.5 Mb)
Time Trending	Forms
How Property Taxes Are Determined	Manufactured Housing - Mobile Homes
Agricultural Property	Glossary of Terms
Assessment Calendar	GIS Geographic Information Systems
Assessment Abstracts 1994 - 2007
Assessment Abstracts by Authorities and Districts   2004  2005  2006  2007	Area/Class Abstracts 2004  2005  2006  2007
The Gallagher Amendment Effect on Residential Taxes (MS Excel only)	Business Personal Property General Information Filing Info and Forms On-line Filing and State of Colorado Tables

Downtown Boulder Office      Map and driving directions

Open Monday - Friday  8:00am - 5:00pm

Boulder County Courthouse
1325 Pearl Street

Second Floor
Boulder, Colorado 80302

 Mailing Address:

Boulder County Assessor
P.O. Box 471
Boulder, Colorado 80306-0471

Main Office:

Phone: 303-441-4830    

Alternate Phone: 303-441-3530

Fax:  303-441-4996

Business Personal Property:

Phone: 303-441-3316 

Fax: 303-441-1783

Longmont Satellite Office

Map and driving directions

Phone: 303-441-4830