21 E 90Th St

A 14-story prewar cooperative constructed in 1927, this Carnegie Hill white‑glove building presents a classic Upper East Side residence characterized by high ceilings, gracious circulation and traditional masonry architecture. Units are primarily multi-room two-bedroom configurations—often classic six layouts—with semi-private elevator landings and long entry galleries that lead to formal living and dining rooms, wood‑burning fireplaces (many converted to gas), beamed ceilings and original moldings. Kitchens range from windowed eat‑ins to fully renovated chef’s kitchens with high‑end appliances; some apartments retain staff rooms or service wings and many include pantry or butler’s pantry areas. Common building amenities reflect full-service living: 24‑hour doorman, live‑in superintendent, attended lobby with a recently refreshed renovation, bike room, individual basement storage bins that transfer with units, complimentary laundry facilities and a small fitness room. The co‑op is pet friendly, permits pieds‑à‑terre with approval, and allows up to 50% financing; there is a 2% transfer/flip fee. Located half a block from Central Park and the Jacqueline Kennedy Onassis Reservoir on a tree‑lined block within Museum Mile, the building is adjacent to major cultural institutions, neighborhood boutiques, restaurants and well-regarded public and private schools, offering an amenity-rich, walkable urban lifestyle.