975 Park Avenue, Unit 1C/D Upper East Side | Park Avenue Co-op | Private Entrance Residential Conversion Eligible A rare combined unit with a private street-level entrance on East 83rd Street. Currently built as a medical office with JHCO-certified surgical suite. Buyers can convert to a three-bedroom, two-bath residence or live/work layout. Pre-war details remain intact: 11-foot ceilings, mahogany floors and doors, original millwork. Quiet and secure first-floor living. Full-service co-op with 24-hour doorman, concierge, fitness center, laundry, and strong security. Prime Upper East Side location: one block to Central Park, near Museum Mile, PS 6, Madison Avenue shopping, and Michelin dining. One of the most compelling conversion opportunities on Park Avenue today This home works for buyers who want control over layout, design, and lifestyle. You can build generous living and dining spaces, add bedrooms with privacy, or create a live/work home that opens onto the street. Park Avenue co-ops rarely offer this level of flexibility, privacy, and direct access. This is a chance to create something personal, functional, and valuable in a premier Manhattan address.