What is C1S Group, Inc.'s NAICS code?

C1S Group, Inc.'s NAICS code is 23 (Construction).

Insights

Workplace recognition C1S Group has been repeatedly recognized as a Best Places to Work, including 2025 North Texas ranking, signaling a strong employer brand and potential for attracting top engineering and construction talent for project execution and client-facing teams.

Safety leadership With ABC Diamond STEP Award and leadership in industry safety practices, C1S presents a compelling story for clients prioritizing safety and compliance, opening doors for partnerships on high-risk or regulated facilities projects.

Strategic partnerships Recent collaborations with Brasfield & Gorrie, KDC, and Corgan on the Hugs Café Headquarters and Training Academy indicate appetite for joint ventures on complex, multi-site builds, suggesting opportunities for co-bid or specialty scopes.

Mid-market scale Annual revenue in the 25–50 million range and a 51–200 employee base position C1S as a mid-market player capable of delivering nimble, cost-effective solutions for regional Fortune 500 clients or multi-site facilities programs.

Facility engineering focus C1S markets itself to facility owners relying on buildings for operations, indicating potential upsell of integrated engineering, project controls, and digital construction tools to existing client portfolios seeking efficiency and reliability in facility performance.

Similar companies to C1S Group, Inc.

C1S Group, Inc. Tech Stack

C1S Group, Inc. uses 8 technology products and services including Cloudflare CDN, Microsoft PowerPoint, dc.js, and more. Explore C1S Group, Inc.'s tech stack below.

Cloudflare CDN
Content Delivery Network
Microsoft PowerPoint
Editors
dc.js
Javascript Graphics
PWA
Miscellaneous
Microsoft
Miscellaneous
On-Screen Takeoff
Operations
Yoast SEO
Search Engines
Radix UI
UI Frameworks

Media & News

C1S Group, Inc.'s Email Address Formats

C1S Group, Inc. uses at least 1 format(s):

C1S Group, Inc. Email Formats	Example	Percentage
First.Last@c1sinc.com	John.Doe@c1sinc.com	100%

Frequently Asked Questions

Where is C1S Group, Inc.'s headquarters located?

C1S Group, Inc.'s main headquarters is located at 4231 Sigma Road Dallas, Texas 75244 United States. The company has employees across 2 continents, including North AmericaEurope.

What is C1S Group, Inc.'s phone number?

You can contact C1S Group, Inc.'s main corporate office by phone at

+1-972-386-****

. 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 C1S Group, Inc.'s stock symbol?

C1S Group, Inc. is a publicly traded company; the company's stock symbol is 4432.T.

What is C1S Group, Inc.'s official website and social media links?

C1S Group, Inc.'s official website is c1sinc.com and has social profiles on LinkedIn.

What is C1S Group, Inc.'s SIC code NAICS code?

C1S Group, Inc.'s SIC code is 8711 - Engineering Services NAICS code is 23 - Construction.

How many employees does C1S Group, Inc. have currently?

As of June 2026, C1S Group, Inc. has approximately 60 employees across 2 continents, including North AmericaEurope. Key team members include Ceo: J. S.President: M. S.Director Of Finance: G. F.. Explore C1S Group, Inc.'s employee directory with LeadIQ.

What industry does C1S Group, Inc. belong to?

C1S Group, Inc. operates in the Construction industry.

What technology does C1S Group, Inc. use?

C1S Group, Inc.'s tech stack includes Cloudflare CDNMicrosoft PowerPointdc.jsPWAMicrosoftOn-Screen TakeoffYoast SEORadix UI.

What is C1S Group, Inc.'s email format?

C1S Group, Inc.'s email format typically follows the pattern of First.Last@c1sinc.com. Find more C1S Group, Inc. email formats with LeadIQ.

When was C1S Group, Inc. founded?

C1S Group, Inc. was founded in 2001.

C1S Group, Inc.

Q: What is C1S Group, Inc.'s official website and social media links?

C1S Group, Inc.'s official website is c1sinc.com. C1S Group, Inc. has social profiles on LinkedIn.

Q: How many employees does C1S Group, Inc. have currently?

C1S Group, Inc. has approximately 60 employees.

Q: What technology does C1S Group, Inc. use?

C1S Group, Inc.'s tech stack includes reCAPTCHA, Google Fonts API, Microsoft Office, jQuery, React.

ConstructionTexas, United States51-200 Employees

C1S Group, Inc. is an engineering and construction firm that serves facility owners who rely on their buildings to support day-to-day operations. Its projects demonstrate the ability to manage multiple sites with varying levels of complexity, reflecting a client base that ranges from global Fortune 500 organizations to single-facility entities. The company emphasizes delivering operational reliability through construction and engineering services tailored to facility performance.
Based in Dallas, Texas, C1S positions itself within the construction industry as a partner capable of agile engagement across geographic locations. The organization places a strong emphasis on workplace safety and employee-focused practices, with external recognition for being a top place to work. Recent activity includes partnerships on a headquarters and training academy project and local acknowledgment as a leading employer in North Texas.