Built in 1880 by acclaimed architect F. S. Barus, 38 East 63rd Street is a Neo-Georgian townhouse that is 18 feet wide and about 7,155 square feet above ground. It features flexible open office spaces, plus an additional 1,545 square feet on the lower level for storage and mechanical systems. The property is ideally located between Park and Madison Avenues on a quiet, tree-lined block with historic homes. The building's facade was redesigned in 1904 by architect William Strom in an elegant Neo-Georgian style for banker John Greenough and his family. The distinctive facade features a gracefully bowed front across the first three levels, anchored by a limestone base with finely detailed window surrounds and trim, along with a classic balcony that enhances its refined architectural presence. The composition subtly echoes the superb Cross &Cross Neo-Georgian facade of the grand 40-foot-wide mansion at 36 East 63rd Street next door, built in 1930, creating a harmonious architectural dialogue between the two neighboring residences and reinforcing the historic elegance of this exceptional block. In 2026, this architecturally significant townhouse presents a rare opportunity to convert into an exceptional single-family residence or to take advantage of its Community Facility zoning, which allows for a wide range of permitted uses within New York City. Potential uses include: - Public and private schools, colleges, universities, and libraries - Museums and cultural institutions - Religious schools and institutions - Hospitals, annexes, nursing homes, and medical clinics - Outpatient care and mental health facilities - Long-term care residences - Non-profit art galleries - Community centers and philanthropic foundations - Daycare centers and nonprofit social service organizations Positioned in one of Manhattan's most prestigious neighborhoods, the property sits at the epicenter of New York City's luxury retail corridor, moments from Central Park and Fifth Avenue, as well as some of the city's most celebrated shopping and dining destinations. The townhouse spans five full floors, all serviced by an expansive wood-paneled commercial elevator. Additional highlights include: - 12-foot ceilings on the parlor level - Large windows overlooking one of the Upper East Side's most attractive historic townhouse blocks - Multiple outdoor spaces, including a small garden, terrace, and solarium With its generous scale, architectural pedigree, and exceptional zoning flexibility, 38 East 63rd Street represents a rare acquisition opportunity that can be optimized for a variety of residential, institutional, medical, educational, or cultural uses. The property is represented by Brown Harris Stevens , Modlin Group, and Cushman & Wakefield