About two years ago, this impeccable pad on Central Park West sold for $4.3 million. Today, after an extensive gut renovation, the apartment is back on the market asking $8.495 million—nearly twice its initial price. But that 50% increase includes a Workshop/APD redesign, complete with “museum quality finishes” and only the finest craftsmanship. The finished product evokes a sense of calm sophistication in a supreme duplex with partial views of the city and Central Park.

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