Duke-Semans mansion

Cool Listings, Historic Homes, Upper East Side

Duke-Semans mansion, 1009 Fifth Avenue, Carlos Slim, Upper East Side mansion,

Carlos Slim, Mexican business magnate and former world’s richest person, is looking to break the record for most expensive townhouse ever sold in NYC. As the Daily News first reported, he’s listed his Upper East Side Beaux Arts mansion at 1009 Fifth Avenue for $80 million, after buying it for only $44 million five years ago from Russian oil mogul Tamir Sapir.

Built in 1901, the limestone-and-red-brick home is known as the Duke-Semans Mansion and is one of the last remaining private homes on Fifth Avenue. It’s located directly across from the Met, rises eight stories, and encompasses a whopping 20,000 square feet. According to the listing, the French Renaissance interiors “feature soaring ceilings, hand-carved wood paneling, lovely trompe l’oeil accents, gold-leaf trimmed fixtures and intricate plaster friezes.”

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