The Roslindale Substation is a historic electrical substation building at 4228 Washington Street in the center of the Roslindale village of Boston, Massachusetts. The brick Classical Revival building was constructed in 1911 by the Boston Elevated Railway (BERy), a predecessor to today's MBTA. The monumental building is 80 feet (24 m) long, 50 feet (15 m) wide, and 46 feet (14 m) high. The building was designed by Robert S. Peabody of Peabody and Stearns, and built by Stone & Webster. The building was use by the Boston Elevated and its successors to provide AC to DC conversion for street cars until 1971. It is one of four substations built by the BERy to survive.