The Manhasset is an 11-story apartment house located on Broadway between West 108th and 109th Streets on the Upper West Side. Apartment houses were a brand new building type imported from France. When they began appearing on the Upper West Side in the 1880s, families had to adjust to the idea of living in the same building as other families. Advantages of apartment living included not needing so many servants and having elevators, which were new technology then.

Built in 1899, the Manhasset is colorful and grand. The top floor roofs have a special form called mansard. The building covers the entire block-front, and, because it is located where Broadway makes a curve, it can be seen from many blocks away. Originally, the Manhasset was an eight-story apartment house. A few years later it was redesigned by two famous architects, Janes and Leo. In addition to making it taller, they added many shops on the first floor after the opening of the subway in 1904.

The original 77 apartments, planned for upper middle class families, contained six, seven, or nine rooms with one to three baths. In 1905, the New York Census records the presence of many professional and business people. Most of the renters were born in the United States, but there were also a number of adults who were immigrants from Germany as well as others from Ireland, France, and Canada. As would be expected on the diverse Upper West Side, the residents appear to have been from various ethnic groups and religions and included Catholics, Protestants, and Jews. Each apartment included a single servant’s room, and most residents had one or two live-in servants.