C&S Companies | 10,840 followers on LinkedIn. C&S plans, designs, constructs, and maintains the built and natural environment. Serving communities nationwide. | Founded in 1968, the C&S Companies are known nationwide for client-focused engineering, architecture, planning, environmental, and construction services. Clients across the country trust C&S to deliver successful projects time and time again. Our staff of more than 400 has the expertise to handle almost any challenge.