Nestled among some of New York's most coveted addresses, 40 East 63rd Street offers a rare opportunity to own a historic brownstone just moments from Central Park and the vibrancy and elegance of Madison Avenue. Sharing the tree-lined block of the celebrated Lowell Hotel, this exceptional approximately 5,000 sq. ft., 15 ft.-wide five-story full-basement residence was built in 1910 and designed in the Italianate style by noted architect J.H. Valentine. Currently configured as four separate apartments, 40 East 63rd Street could easily be renovated as a spectacular single-family residence or preserved as an income-generating property. Delivered vacant. The expansive garden duplex features three bedrooms, one full bath, and two half baths. A spacious living and dining area opens onto a private, sun-filled rear garden, creating an ideal setting for both everyday living and entertaining. A roomy bedroom overlooks the front garden while the open kitchen features a Bosch stove and microwave. The upper level offers two beautifully proportioned bedrooms with 10'10' ceilings, generous closets, the primary bedroom with en-suite bath. The third floor contains a one bedroom/one bath apartment with a spacious street-facing living/dining area, an efficient kitchen and a bedroom space with garden views. Full bath, closets and a wood-burning fireplace are enhanced by this floor's 10'2" ceilings. The fourth floor one bedroom/one bath apartment balances a charming living/dining area with an ample bedroom, the latter opening onto a lovely 200 sq. ft. terrace. Galley kitchen, wood-burning fireplace and a full bath as well as numerous closets and 9'6" ceilings. The penthouse apartment replicates the fourth floor's interior plan but also boasts 11"7' ceilings that rise in the living/dining area to a spectacular central skylight. Additional highlights include hardwood floors throughout, large windows, and a full basement providing abundant storage and utility space. Surrounded by classic New York atmosphere and some of the world's best restaurants, shopping and art galleries, 40 East 63rd Street awaits its potential reimagining as a truly unique property on one of New York's most exclusive blocks.