The gilded age has returned to the Upper East Side — from Russia, with cash.
Plans to join three historic townhouses on East 75th Street will create a mega-mansion of 31,500 square feet, the largest single-family home in Manhattan, according to architectural plans exclusively obtained by The Post.
Russian-Israeli billionaire Roman Abramovich, a close friend of Russian President Vladimir Putin, began acquiring townhouses on the stretch of 75th Street between Fifth Avenue and Madison Avenue in 2014 to build his urban castle.
One design expert said the renovation price tag could reach $100 million, on top of the $90 million already paid for the property purchases.
Last month, Abramovich, 51, the owner of England’s Chelsea Football Club, transferred the combined properties at 9, 11 and 13 East 75th St. to his ex-wife, Dasha Zhukova, for $74 million, public records show. A fourth townhouse — 15 East 75th St. — was also transferred to Zhukova, a 37-year-old socialite and art collector, for an additional $16.5 million, although it is no longer included in the plans for the mega-mansion.
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