850 Park Ave

Built in 1914 and rising twelve stories, this is a full-service, pre-war cooperative on Park Avenue designed by Rouse & Goldstone. The building contains primarily large classic layouts—three- and four-bedroom residences and numerous classic-eight/ten-room configurations—many retaining original architectural details such as herringbone oak floors, crown moldings, high ceilings (about 10 feet), wood-burning fireplaces, decorative millwork and oversized picture windows. Apartments are accessed via semi-private landings and a generous central lobby, and several units feature formal galleries, separate staff rooms or maid’s quarters, wet bars or butler’s pantries, and substantial built-in storage. Common areas and services include a 24/7 staffed door, bike storage, assigned storage bins, a renovated fitness room, laundry room, bicycle room, a landscaped courtyard and an outdoor half basketball court and play area. The co-op is pet friendly, permits pied-à-terres with board approval, allows up to 30% financing, and carries a purchaser-paid flip tax. Located at Park Avenue and East 77th Street, the building sits two blocks from Central Park and within walking distance of museums, restaurants, shopping, and subway service, offering a deeply residential Upper East Side lifestyle with white-glove staff and large, flexible prewar residences.