The proposed combination of the penthouse and fifth floor of the iconic Carhart Mansion will result in the Upper East Side's largest full-service condominium home, replete with history, splendor, scale, privacy, security, and over 5,000 square feet of outdoor space. Nowhere else in Manhattan has such an opportunity arisen: a full-service, 24-hour doorman building with only four residences (and the option to own two of them simultaneously), separated from the street, and with views, light and air that rival any penthouse. Imagine the scale and history of 5th/Madison limestone mansion, without the responsibility or street frontage.