Four rooms on Central Park and a wood-burning fireplace distinguish Residence 4A, an approximately 2,500-square-foot, eight-room home at one of Carnegie Hill’s signature Fifth Avenue addresses. Entered from a semi-private elevator landing, the residence opens to a nearly 20-foot gallery that establishes its exceptional scale. The park-facing living room measures approximately 14 by 25 feet and is anchored by a wood-burning fireplace, while the formal dining room offers an equally gracious setting for entertaining. The flexible current layout provides three bedrooms, three windowed baths, a den or potential fourth bedroom, a separate office or staff room, an expansive windowed eat-in kitchen and a dedicated laundry room. A comprehensive renovation completed by a prior owner established the current layout and introduced substantial infrastructure and finishes that remain in excellent condition. Highlights include Brazilian cherry wood floors, triple-pane windows that create remarkable quiet, a multi-zone Mitsubishi VRF air-conditioning system and extensive custom closets fitted in solid maple. The large windowed kitchen features SieMatic cabinetry, limestone counters and floors, a center island, Sub-Zero food and wine refrigeration and a full complement of Miele appliances, including two dishwashers, wall ovens and a built-in coffee system. A separate laundry room contains a washer and vented dryer along with a slop sink. The three baths are finished in limestone with Duravit and Hastings fixtures. Beautifully maintained and immediately livable, 4A is equally well suited to a light cosmetic refresh or a more ambitious transformation. An illustrative alternate plan presents one compelling possibility: a dramatic park-facing living and dining room, an expanded primary suite, three bedrooms plus a library or office, three-and-a-half baths and a separate scullery or pantry. The alternate plan is conceptual and subject to all required board, architectural and governmental approvals. Select rooms are shown both virtually staged and as they appear today, with current-condition photographs following the corresponding staged images. Designed in 1924 by C. Howard Crane and Kenneth Franzheim, 1158 Fifth Avenue is a full-service prewar cooperative distinguished by its French Renaissance façade and dramatic double-height octagonal lobby. Amenities include a full-time doorman and concierge, resident manager, fitness center, bicycle storage and private storage. Museum Mile, the Central Park Reservoir and Madison Avenue are moments away. Financing is permitted up to 40%. A 2.5% flip tax is payable by the purchaser.