Buildings, for the purpose of this article, shall be classified in respect
to their occupancies as follows:
A. One- and two-family dwellings. Buildings containing one
or two dwelling units with fewer than four lodgers residing with a family
in either one of such dwelling units.
B. Multiple dwellings.
(1) Buildings containing one or two dwelling units with more
than four lodgers residing with a family in either one of such dwelling units.
(2) Buildings containing three or more dwelling units.
(3) Apartment houses and apartment hotels.
(5) Buildings with sleeping accommodations for more than
five persons, used or occupied as a club, dormitory, fraternity or sorority
house or for similar uses.
C. Accessory structures. Garages, carports and similar-type
structures on residential premises.