S.C. Encyclopedia | The single house is the building form most closely associated with eighteenth-century Charleston architecture. It first appeared in the early eighteenth century and emerged as a favored residential form after the fire of 1740. The typical single house stands two or more stories in height and is built on a rectangular plan with its narrow end facing the street. Each floor has two rooms with a central stair-hall in between. Piazzas occupy the long wall facing the inside of the lot, and the chimneys are located on the opposite wall, in the rear of the house.