 It was listed on the National Register of Historic Places (NRHP) on July 6, 2005.The two neighborhoods, combined into one historic district in 1986, reflect the history of suburban design from 1885 when the phenomenon first took hold in Westchester, the first large suburban area in the world to develop, to the 1920s when the automobile and Progressive Era ideas of planning and architecture were coming into favor.The landscape and house architecture of the area remains remarkably intact and provide valuable information about the range of innovative planning principles that were applied there.