In 1901, Benjamin Duke bought the spec-built mansion on Fifth Avenue which was designed by the architectural firm of Welch, Smith & Provot. The home is five stories with a very narrow facade facing Fifth Avenue and a long entrance facade on Eighty-Second Street. The home features a mansard roof, which is a unique feature in a city of mostly flat-topped buildings. The terraced roof offers views of Central Park to the rear and the Metropolitan Museum of Art.
Benjamin Duke lived in the mansion with his wife until 1907, when he sold it to his brother, James, who was in the process of building a home at Seventy-Eighth and Fifth (now the Institute of Fine Arts). When the home was completed in 1912, James Duke moved out of 1009 and the next occupant was Angier Duke, son of Benjamin. From that time until the early 2000s, the home remained in the Duke family.
The home has changed hands a couple of times since the early 2000s. Most recently, Mexican telecom magnate Carlos Slim purchased the property for $44 million, stating that he would use it for a place to stay when he was in the city for business. Within a few years, however, Slim put the mansion on the market for $80 million. In 2016, the mansion was removed from the market and has not been relisted as of this writing.