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