Queens Boulevard was widened in the 1920s. Planning for a Queens Boulevard subway line started around this time. There were proposals for two stations in Forest Hills: an express station serving all trains on 71st Avenue, and a local station at 75th Avenue. During the late 1920s, in anticipation of the arrival of the subway, land was bought by developers and was built up. Zoning laws were changed to allow fifteen-story apartment buildings to be built, and made the neighborhood of Forest Hills a more desirable place to live, especially as it was an express stop. Queens Borough President George Harvey predicted that the introduction of the subway to Forest Hills would turn Queens Boulevard into the "Park Avenue of Queens." Excavation for the line started in 1931, and the two subway stops in Forest Hills opened in 1936 along with six other stations on the Queens Boulevard line.