In each zoning district, the following restrictions shall control the use of land and buildings:
A. All business activity, service, storage, merchandise, display, and where permitted, repair and processing, shall be conducted wholly within an enclosed building except where specifically provided otherwise. Permitted off street parking lots, off street loading facilities, and open sales lots need not be enclosed.
B. Not more than one principal building shall be located on any zoning lot in a residence district.
C. Unless otherwise provided in this ordinance, all lots shall front on a public street. (Ord. 92-1855, 12-14-1992)