Reply Somerville fire crews battled a large fire Monday afternoon that spread between two housing units. (Shutterstock) SOMERVILLE, MA – Somerville fire crews battled a large fire Monday afternoon that spread between two housing units. Just before 3 p.m. on Monday, the Somerville Fire Department responded to a building fire at 2-4 Adrian Street, where they encountered heavy smoke coming out of the building and a fire in the basement. According to officials, the fire started in a basement mechanical room at 4 Adrian Street and then spread into the ceiling and the wall into the attached unit at 2 Adrian Street. The fire also spread onto a porch.