257 Central Park West (also known as the Orwell House) is a co-op apartment building on the southwest corner of 86th Street and Central Park West in the Upper West Side of Manhattan in New York City. It was designed by the firm of Mulliken and Moeller and built by Gotham Building & Construction between 1905 and 1906.New York City Landmarks Preservation Commission. Upper West Side/ Central Park West District Designation Report, Vol. I: Essay/ Architects' Appendix, April 24, 1990.
