Guernsey

Guernsey is an employee-owned, multi-discipline firm located in Oklahoma City, Oklahoma, founded in 1928. The company specializes in design and consulting services across various sectors, employing a diverse team of engineers, architects, planners, consultants, and project managers. This broad expertise allows Guernsey to effectively address complex projects. The firm offers a comprehensive range of services, including architecture and planning, interior design, engineering, water resources management, transportation infrastructure, environmental services, and strategic consulting. Guernsey also engages in public works projects and supports sustainable building practices through LEED certification. Their client base includes federal, state, and local governments, military entities, utility companies, tribal governments, educational institutions, Fortune 500 companies, and the oil and gas industry. Notable projects include the American Fidelity Assurance Office Renovation and the Consolidated Rental Car Facility.

Architecture & Planning Oklahoma City, United States Founded 1928 ~166 employees

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Employees
166
+0.6% in the 3 months to Sep 2026
Annual revenue
~$431K
12-month attrition
4.6%
Tech: 4.8%
H1B sponsor
NA

Headcount trend

Guernsey went from 139 employees in Oct 2024 to 166 in Sep 2026. Apr to Sep 2026: 15 people joined, 1 left.

Org structure

Headcount by department

Other57
Operations37
Engineering37
Design21
Finance7
Marketing3
Sales3
HR1

Salaries at Guernsey

All salaries

1 salary profiles in the US

Pay by level, gender and ethnicity

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Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.