Horsley Witten Group, Inc. is a full-service civil engineering and environmental consulting firm based in Sandwich, MA with offices in Boston; Providence, RI; Exeter, NH; and in St. Croix, USVI.

Our dedicated staff of highly skilled professionals manages complex projects in New England and beyond. Our team approach integrates sustainable civil engineering, urban design, community planning, training, and landscape architecture into solutions that work for our clients and the environment.