Hosmer Elementary School is a 143,500sf new construction project serving 590 elementary school students in grades K-5 and 200 pre-kindergarten and preschool students in its Early Childhood Learning Center. As the largest of the three public elementary schools in Watertown, the existing building and site served as a valuable community resource for its recreation fields and assembly spaces within its densely populated neighborhood. Over the span of its 50-year life, a series of additions created a haphazard floor plan that proved difficult to navigate and manage from an educational standpoint. Over the past several years, the School District began the process of reimagining the Hosmer Elementary School with a focus on a sustainable Net Zero Energy solution.