Boulder County COVID-19 status is at Level RED: “Severe Risk.” Learn more in English and Spanish. See graphic for details.

To report a Public Health order violation, complete this form. Questions about COVID & your business? Email covidbiz@bouldercounty.org.

2019 Time Trend Adjustments

Using Time Trending for Property Valuation

Residential Time Trends July 1, 2013 through June 30, 2018

Market Area Factor Tables Map
2019 Apartment Time Trends
Market Areas: 640, 641, 642, 643, 644, 645, 646
PDF XLSX None
2019 Condominium Residential Time Trends
Market Areas: 630, 632, 633, 634
PDF XLSX None
2019 Boulder Residential Time Trends
Market Areas: 101, 102, 103, 104, 105, 106, 107, 108, 109
PDF XLSX Boulder Area
2019 Erie, Gunbarrel, Lafayette, Louisville, Niwot, & Superior Residential Time Trends
Market Areas: 401, 402, 403, 404, 405, 407, 501
PDF XLSX County Overview
2019 Longmont Residential Time Trends
Market Areas: 502, 503, 504, 505, 506, 507
PDF XLSX Longmont Area
2019 Mountain Residential Time Trends
Market Areas: 201, 202
PDF XLSX Southeast County
2019 Unincorporated Plains Residential Time Trends
Market Areas: 301, 302, 303, 304
PDF XLSX County Overview

Contact Us

Due to COVID-19, all Assessors Office sites are closed for business until further notice. Please call or email us with your questions during our normal business hours.

Assessor
Phone: 303-441-3530
Fax: 303-441-4996

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

Email

Schedule a meeting

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

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

Longmont
515 Coffman Street, Suite 114
Map & Directions

Lafayette
1376 Miners Dr., Unit 105
Map & Directions