Insights

Sustainable Focus Guernsey's commitment to advancing sustainable practices and enhancing the built environment indicates opportunities to offer innovative green building solutions, sustainability consulting, and eco-friendly infrastructure projects.

Strategic Partnerships Recent collaborations with Siemens AG, HoganTaylor LLP, and the City of Cushing suggest potential for expanding services in energy strategy, cybersecurity, and comprehensive urban planning markets, leveraging these established relationships.

Technology Adoption Utilization of advanced design and planning tools such as Autodesk Revit, AutoCAD, and PWA demonstrates a tech-savvy approach, creating opportunities to introduce cutting-edge digital solutions, BIM technologies, and cybersecurity enhancements.

Growth and Expansion With a revenue range of 100 to 250 million dollars and ongoing recent hires in marketing and associate roles, Guernsey is positioned for growth. Targeted marketing and consulting services can support their expansion in international markets and diversified service areas.

Industry Integration Guernsey's multidisciplinary services spanning architecture, environmental planning, engineering, and cybersecurity, combined with industry workforce trends, present cross-sector sales opportunities across design, consulting, and digital security solutions for large infrastructure clients.

Guernsey - Engineers/Architects/Consultants Tech Stack

Guernsey - Engineers/Architects/Consultants uses 8 technology products and services including Ultimate Software, Autodesk Revit, AutoCAD, and more. Explore Guernsey - Engineers/Architects/Consultants's tech stack below.

  • Ultimate Software
    Applicant Tracking Systems
  • Autodesk Revit
    Cad & Graphics
  • AutoCAD
    Cad & Graphics
  • PWA
    Miscellaneous
  • PHP
    Programming Languages
  • Google Tag Manager
    Tag Management
  • HTTP/3
    Web & Portal Technology
  • Yii
    Web Frameworks

Media & News

Guernsey - Engineers/Architects/Consultants's Email Address Formats

Guernsey - Engineers/Architects/Consultants uses at least 1 format(s):
Guernsey - Engineers/Architects/Consultants Email FormatsExamplePercentage
First.Last@guernsey.usJohn.Doe@guernsey.us
98%
LastFirst@guernsey.usDoeJohn@guernsey.us
1%
F.Last@guernsey.usJ.Doe@guernsey.us
1%

Frequently Asked Questions

Where is Guernsey - Engineers/Architects/Consultants's headquarters located?

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Guernsey - Engineers/Architects/Consultants's main headquarters is located at 5555 North Grand Boulevard Oklahoma City, Oklahoma 73112 United States. The company has employees across 4 continents, including North AmericaEuropeAfrica.

What is Guernsey - Engineers/Architects/Consultants's phone number?

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You can contact Guernsey - Engineers/Architects/Consultants's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Guernsey - Engineers/Architects/Consultants's stock symbol?

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Guernsey - Engineers/Architects/Consultants is a publicly traded company; the company's stock symbol is SIGC.L.

What is Guernsey - Engineers/Architects/Consultants's official website and social media links?

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Guernsey - Engineers/Architects/Consultants's official website is guernsey.us and has social profiles on LinkedIn.

What is Guernsey - Engineers/Architects/Consultants's NAICS code?

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Guernsey - Engineers/Architects/Consultants's NAICS code is 54131 - Architectural Services.

How many employees does Guernsey - Engineers/Architects/Consultants have currently?

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As of April 2026, Guernsey - Engineers/Architects/Consultants has approximately 157 employees across 4 continents, including North AmericaEuropeAfrica. Key team members include Chief Executive Officer: J. S.Vice President And Design Group Director, Engineering: E. T.Vice President Energy & Utility Solutions: H. A.. Explore Guernsey - Engineers/Architects/Consultants's employee directory with LeadIQ.

What industry does Guernsey - Engineers/Architects/Consultants belong to?

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Guernsey - Engineers/Architects/Consultants operates in the Architecture and Planning industry.

What technology does Guernsey - Engineers/Architects/Consultants use?

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Guernsey - Engineers/Architects/Consultants's tech stack includes Ultimate SoftwareAutodesk RevitAutoCADPWAPHPGoogle Tag ManagerHTTP/3Yii.

What is Guernsey - Engineers/Architects/Consultants's email format?

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Guernsey - Engineers/Architects/Consultants's email format typically follows the pattern of First.Last@guernsey.us. Find more Guernsey - Engineers/Architects/Consultants email formats with LeadIQ.

When was Guernsey - Engineers/Architects/Consultants founded?

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Guernsey - Engineers/Architects/Consultants was founded in 1928.

Guernsey - Engineers/Architects/Consultants

Architecture and PlanningOklahoma, United States51-200 Employees

Founded in 1928, Guernsey is a multidisciplinary design and consulting firm based in Oklahoma City, Oklahoma, and with work across five continents. With a legacy of delivering innovative solutions across diverse industries, Guernsey is committed to advancing sustainable practices and enhancing the built environment. Guernsey is 100% owned by its people, passionately entrepreneurial, and culture-driven. 

Guernsey’s services span architecture, engineering, economic and management consulting, environmental and transportation planning, and cybersecurity solutions—reflecting the firm’s belief that integrated expertise leads to stronger, more enduring outcomes.

Section iconCompany Overview

Headquarters
5555 North Grand Boulevard Oklahoma City, Oklahoma 73112 United States
Phone number
Stock Symbol
SIGC.L
NAICS Code
54131 - Architectural Services
Founded
1928
Employees
51-200

Section iconFunding & Financials

  • $100M$250M

    Guernsey - Engineers/Architects/Consultants's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Guernsey - Engineers/Architects/Consultants's revenue is estimated to be in the range of $100M$250M

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