The core of C&S’s business has always been our valued municipal and government clients. Since 1968, we have continued to diversify and expand our services so that we can offer engineering services covering nearly everything our clients might need, from highways and bridges to maintenance garages and public safety buildings. C&S also represents communities at town and planning board meetings, providing alternative solutions to existing problems, and helping ensure the community and surrounding properties benefit as much as possible when new developments are undertaken. Our clients include villages, towns, cities, counties, state and federal agencies, public school districts, and public colleges and universities.

Federal Government

As the United States federal government continues to build, maintain, and protect our country’s valuable assets from coast to coast and abroad, the C&S Companies can provide responsive and reliable service to our nation’s infrastructure. We deliver agile, creative solutions—whether the assignment is mission-critical or support-strengthening. From planning and design to program management, construction management, and construction services, we focus on the right solution at the right time and place. We offer flexibility in contracting and delivery means, from IDIQs, MATOCs, and GSA schedules to contractor-led design-build partnerships and integrated project delivery. Above all, C&S strives to be a trusted advisor, treating each new challenge with the importance it warrants and the positive, team-minded approach to achieve success.

System for Award Management
The C&S Companies are registered in the federal SAM database under various company identification codes.

Professional NAICS Codes

  • 541310—Architectural Services
  • 541320—Landscape Architectural Services
  • 541330—Engineering Services
  • 541350—Building Inspection Services
  • 541490—Other Specialized Design Services
  • 541611—Admin Management and General Management Services
  • 541620—Environmental Consulting Services
  • 541690—Other Scientific and Technical Consulting Services
  • 561621—Security System Services

Construction NAICS codes:

  • 236210—Industrial Building Construction
  • 236220—Commercial and Institutional Building Construction
  • 237110—Water and Sewer Line and Related Structures Construction
  • 237120—Oil and Gas Pipeline and Related Structures Construction
  • 237130—Power and Communication Line and Related Structures Construction
  • 237310—Highway, Street, and Bridge Construction
  • 237990—Other Heavy and Civil Engineering Construction
  • 238110—Poured Concrete Foundation and Structure Contractors
  • 238120—Structural Steel and Precast Concrete Contractors
  • 238130—Framing Contractors
  • 238140—Masonry Contractors
  • 238170—Siding Contractors
  • 238190—Other Foundation, Structure, and Building Exterior Contractors
  • 238220—Plumbing, Heating, and Air-Conditioning Contractors
  • 238290—Other Building Equipment Contractors
  • 238310—Drywall and Insulation Contractors
  • 238320—Painting and Wall Covering Contractors
  • 238330—Flooring Contractors
  • 238340—Tile and Terrazzo Contractors
  • 238350—Finish Carpentry Contractors
  • 238390—Other Building Finishing Contractors
  • 238910—Site Preparation Contractors
  • 238990—All Other Specialty Trade Contractors

C&S has worked with many federal and military agencies through IDIQs and IDCs, and on stand-alone projects.

  • Department of Defense ( Air Force, Air National Guard, Army Corps of Engineers, Naval Facilities Engineering Command)
  • Department of Energy
  • Department of Homeland Security, including US Coast Guard
  • Department of Interior (Fish & Wildlife Service, National Park Service Special Projects Division)
  • Department of Veteran Affairs (Several VA healthcare networks and medical centers)
  • General Services Administration (Public Buildings Service)
  • U.S. Postal Service
  • U.S. Department of Transportation (Federal Aviation Administration, St. Lawrence Seaway Corporation)

In addition, we hold subcontracts with large, private contractors serving the government such as Lockheed Martin, General Dynamics, and Sensis Corp.

Small Business Alliances
C&S routinely teams with and maintains working relationships with highly qualified small businesses, service-disabled and veteran-owned firms, women-owned firms, 8(a) entities, HUBZone firms, and other small and disadvantaged businesses. We are committed to meeting the federal government’s goals and requirements for participation of such firms in our contracts, including the provision of small business subcontracting plans, where required.


  • Society of American Military Engineers, National Sustaining Member, along with regional posts
  • U.S. Green Building Council
  • Federal Agencies and Procurement Advocacy Committee,
  • American Council of Engineering Companies