The three contributing buildings in the district face Watchung Avenue. Built 1915–1919, the Plainfield City Hall was designed by architects Peck and Bottomley and features Georgian Revival architecture. Built 1922–1923, the YMCA Building is a three-story brick building featuring a limestone vestibule with Corinthian columns. Built in 1928, the former Seventh-Day Baptist Building, now the City Hall Annex, features Jacobethan Revival architecture. Built in 1927, the Plainfield War Memorial, a contributing object, features a flagpole on a tier of pink granite circular steps. East of the memorial is the Crescent Avenue Presbyterian Church, which contributes to the Crescent Area Historic District.[3]