Carlos Slim, former world’s richest man, is used to playing with big numbers! Known as the Warren Buffett of Mexico, Slim has just attached a swelling price tag of $80 million to his Manhattan mansion. The Mexican business magnate is asking almost twice the amount of his investment as he had bought the Duke-Semans Mansion for $44 million about five years ago. The billionaire’s 1009 Fifth Avenue property is considered to be one of the last remaining private mansions in the upscale area along the Gold Coast of Fifth Avenue.
Built in 1901 and designed by the firm of Welch, Smith & Provot, the exceptionally grand Beaux-Arts style residence features a limestone and red-brick facade which extends 27 feet along Fifth Avenue and 100 feet facing 82nd Street.
Spreading over 20,000 square feet and directly facing the Metropolitan Museum of Art, the eight storey high estate features soaring ceilings, hand-carved wood paneling, lovely trompe l’oeil accents, gold-leaf trimmed fixtures and a sweeping staircase. 
While the lower floors are articulated limestone and boast an entrance that is charmingly capped with a wrought-iron marquee, the upper floors are clad in brick and are lavishly adorned with limestone elements and accented with curvilinear bays. It’s unique corner orientation allows each and every room to enjoy a tree-lined street view and to receive abundant light.
Carlos Slim’s magnificent townhouse is certainly one of New York’s most significant properties to own and if it fetches $80 million, it will be the most expensive mansion ever sold in NYC.
