400 E 56Th St

Plaza 400 is a full-service, white-glove cooperative tower on the Sutton Place edge of Midtown East. Completed in 1968, the building rises approximately 40 stories and contains a large mix of studios and one- to three-bedroom apartments across roughly 266 units. Architecture is period high-rise: rectilinear massing, wide glazing bands and balconies on select corner homes. Interiors range from original mid-century layouts with gracious entry foyers, formal dining rooms and galley kitchens to extensively renovated units featuring marble baths, custom closets and upgraded appliances. Many homes include balconied outdoor space, walk-in closets, dressing areas and abundant built-ins; several larger combinations deliver split bedroom wings and multiple exposures with river and skyline views. Shared amenities are comprehensive and service-oriented: a staffed porte-cochere, 24-hour doorman and concierge, on-site management and live-in super; a rooftop skytop with heated seasonal pool and terrace; fitness center and studio space; residents’ lounge, children’s playroom, package room, bicycle storage and central laundry. The building offers a discounted attended garage with EV charging, storage and maintenance that covers core utilities. Board policies permit pieds-à-terre, guarantors and co-purchasing with approval; subletting and financing are subject to board rules. The setting is convenient to the East River promenade, museums, fine dining and multiple transit options.