The number of stories or floors in the building in which the unit is located, ascertained for occupied and vacant units. Stories (or floors) include basements or attics if these contain finished rooms for living purposes. (A basement is an enclosed space in which a person can walk upright under all or part of the building.) This item was asked on a sample basis.
Responses for stories in structure were edited for consistency with information on units in structure. The responses given for units in structures with fewer than 5 units were edited to "1 to 3" stories.
Similar data have been collected since 1960; in 1960, however, data were collected only in cities with 50,000 or more inhabitants. In 1980, basements finished for living purposes were counted as stories for the first time.
See also: "Elevator in Structure".