(A) Group developments consist of commercial, industrial and housing group development projects, not to include mobile homes or mobile home parks.
(B) Group commercial or industrial developments consist of more than one (1) commercial or industrial structure erected on a single lot.
(C) Group housing developments consist of more than one (1) residential structure (single-family, duplex or multi-family) on a single lot.
(1985 Code, § 9-102) Penalty, see § 158.999