Rare opportunity to own a maisonette apartment at the prestigious 740 Park Avenue Cooperative. Currently utilized as a doctor's office, the apartment can continue its usage as medical space or possibly serve as a canvas to create a spacious and luxurious private residence. The apartment has 2 discreet street entrances and 7 south-facing windows for glorious light. Originally part of a triplex residence in the building, Apartment 1C once again awaits a unique transformation. 740 Park Avenue, designed by Rosario Candela, is situated on the northwest corner of 71st Street and Park Avenue and was converted into a co-operative by John D. Rockefeller Jr in 1929. 24-hour doorman/concierge, resident manager and in-house gym. Proposed residential conversion floor plan online.