A 3-1/2 story, finished residence has four levels of finished living area, and
is characterized by a steep roof slope (8 to 12 or greater) and dormers.
Because of the roof design, the area of the fourth floor is usually 40% to 60% of
the third floor area. Since the fourth floor is finished, enter the total area
for all four floors for the total floor area. This style is available for
single-family residences only.