January 1, 2026
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The Pacific Coast Business Times’ collection of Top 25 lists represents data on thousands of companies in Ventura, Santa Barbara and San Luis Obispo counties, collected by our reporters and researchers.

We offer a new list each week ranking the top companies, employers and people operating in one of the many industries that compete in the Tri-Counties. Our editors research and validate all of the information, so that you can be sure you’re getting the most accurate data available.

• All lists come in an Excel compatible format, and you can preview the top listings in HTML format.
• Please note: All list purchases are a one-time download and are non-refundable.

If you have questions about our lists, want to nominate a company for inclusion or need to update information, please contact [email protected].

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Engineering Firms
Ranked by number of tri-county employees
Rank
(Prior)
Name
Address
City, ZIP
Phone
Website
Tri-county Employees
Tri-county offices
Specialties
Principal(s)
Year
est.
1
(1)
Stantec Consulting Services
200 E. Carrillo St., Ste. 101
Santa Barbara, 93101
(805) 963-9532
stantec.com
164
3
Civil, environmental services, transportation, water, community development, surveying, planning and land use
Brianna Daniels, Derek Rapp
1954
2
(2)
RRM Design Group
3765 S. Higuera St., Ste. 102
San Luis Obispo, 93401
(805) 543-1794
rrmdesign.com
150
3
Civil, transportation and structural engineering
Lief McKay, Tim Walters, Robert Camacho
1974
3
(4)
Cannon
1050 Southwood Drive
San Luis Obispo, 93401
(805) 544-7407
cannoncorp.us
111
2
Water resources, transportation, land development, SCADA and automation, oil and gas, energy efficiency, aerospace and defense; civil, structural, mechanical, electrical
Michael Cannon
1976