645 Summer Street is Tocci’s second project with Pappas Enterprises. Located directly on the channel in South Boston, the project is an occupied renovation of an existing block and concrete slab structure with a precast concrete facade. The 2-story, 150,000 sf building was renovated in 3-phases to maintain operations by existing tenants. The renovation included the removal of existing precast concrete panels on the façade for relocation and added a curtain wall between panels. New windows were be installed throughout both floors. Sustainability was key for this project, earning it LEED Silver.