Insights

Diverse Service Portfolio Guernsey offers a wide range of services including architecture, engineering, environmental planning, economic consulting, and cybersecurity, positioning it as a comprehensive solution provider for complex projects and creating opportunities to cross-sell integrated solutions to clients across multiple sectors.

Recent Strategic Partnerships The company has formed key collaborations with industry leaders like Siemens and HoganTaylor LLP, indicating active engagement in innovative sectors such as energy and cybersecurity, which can open doors to additional projects and specialized service opportunities.

Sustainability Focus With an emphasis on advancing sustainable practices and LEED certification expertise, Guernsey appeals to clients prioritizing green building and environmental compliance, making sustainability-driven projects a strong sales target.

Growth and Expansion Recent hires and leadership appointments, including a new director of marketing and business development, demonstrate a focus on growth and market expansion, offering prospects for targeted outreach towards firms seeking to enhance their project pipelines.

Technology Integration Utilizing advanced design and planning tools such as Autodesk Revit, AutoCAD, and web technologies indicates Guernsey’s commitment to innovative, tech-driven solutions, providing opportunities to offer cutting-edge digital transformation services to tech-forward 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

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 SIC code NAICS code?

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Guernsey - Engineers/Architects/Consultants's SIC code is 8712 - Architectural Services NAICS code is 54131 - Architectural Services.

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

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As of December 2025, Guernsey - Engineers/Architects/Consultants has approximately 157 employees across 4 continents, including North AmericaEuropeOceania. 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

Phone number
SIC Code
8712 - Architectural Services
Stock Symbol
SIGC.L
NAICS Code
54131 - Architectural Services
Founded
1928
Employees
51-200

Section iconFunding & Financials

  • $50M$100M

    Guernsey - Engineers/Architects/Consultants's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    Guernsey - Engineers/Architects/Consultants's revenue is estimated to be in the range of $50M$100M

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