GZA is an employee-owned consulting firm providing geotechnical, environmental, water, ecological, and construction management services to a wide array of private and public clients.  Our mission is to be the premier provider of practical and innovative solutions to the 21st century challenges of the natural and built environments for the benefit of our clients, employees, shareholders, and society.

Our vision is to operate as One Company, excelling as a multi-disciplinary, multi-office firm of proactive, bright and dedicated people; create Growth, increasing our staff, revenues, and profits for the benefit of our employees, shareholders and clients; achieve National Recognition in our core service areas on the strength of our technical expertise, experience and reputation of our people; and achieve Generational Transition, successfully transitioning the leadership of the firm to a new generation.

GZA employs more than 550 engineers, scientists, construction managers and support staff in 26 offices in the New England, Mid-Atlantic, Appalachian and Great Lakes Regions.  We focus on clients in the architecture and engineering, contracting, governmental, industrial, infrastructure, institutional, oil and gas, power and real estate client sectors.  The legal community also represents a key alliance and focus of ours, connecting us in many of these sectors.  We excel at providing high value consulting on complex projects, bringing to bear the entire resources of the company across all offices and services for our clients, regardless of where the client or project is based.

The firm is consistently ranked among the top 100 firms on Engineering News Record's (ENR) annual list of the top 200 Environmental firms - ranking 89th in 2015.  We are consistently ranked among the top 500 ENR Design firms; ranking 126th in 2015.  We take the greatest pride in advocating for our clients and developing solutions that advance their business or project.