Commissioners: “We will continue to value, respect, and support all individuals as we serve the people of Boulder County.” Read full message.

Immigrant Resources, including a Know Your Rights Booklet, available on the Immigration Resources webpage.

2025/2026 Non-Residential Sales

Current 2023/2024 Tax Years: Non-Residential Sales

Base Period Sales from July 1, 2022–June 30, 2024 with Time Trends

Commercial Properties

Commercial Comparable Sales by Use XLSX

2025 Commercial Time Trends XLSX

Commercial Condominiums

Commercial Condominium Comparable Sales XLSX

2025 Commercial Condominium Time Trends XLSX

Vacant Land

Sorted by market area. The land size under “acres” is not necessarily the surveyed land size, but may only be a GIS (Geographic Information systems) measurement. Sales include residential, commercial, and industrial lands, and vacant land with minor structures.
Vacant Land Comparable Sales XLSX

2025 Vacant Property Time Trends XLSX

Commercial and Industrial Detailed Valuation Information

Data used to determine the actual value of Commercial and Industrial properties and includes detailed valuation information on cost, income, and market approaches. This is not a comprehensive list of all properties in Boulder County, and is provided in addition to the lists of comparable commercial property sales.
Commercial & Industrial Property Summary Data XLSX

Contact Us

Assessor

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

Email

Mailing Address

PO Box 471
Boulder, CO 80306-0471

Hours: 7:30 a.m. to 5 p.m.
Monday-Thursday
Closed Friday

Locations

Assessor Boulder and Longmont Drop Boxes

Boulder

1325 Pearl St., 2nd floor
Boulder, CO 80302
Hours: 7:30 a.m. to 5 p.m.
Monday-Thursday
Map and Directions Boulder Location

Longmont

515 Coffman St., Suite 114
Hours: 7:30 a.m. to 5 p.m.
Monday only
Map and Directions Longmont Location

Lafayette

1755 S Public Road
Hours: 7:30 a.m. to 5 p.m.
Tuesday only
Map and Directions Lafayette Location