A 1½ story, unfinished residence has two levels, with the upper level being unfinished, and is characterized by a steep roof slope (8 to 12 or greater) and dormers. Because of the roof design, the area of the second floor is usually 40% to 60% of the ground floor area. Since the upper level is unfinished, enter the area for the ground floor only for the total floor area. This style is available for single-family residences only.