A. R-15 Zone and R-1 Zones. In any single-family residential zone, only one main building shall be located, constructed or maintained on any one lot.

B. Other Zones. In any zone other than a single-family residence zone, only one main building, whether a public building, apartment house, apartment court, main dwelling or otherwise, shall be located, constructed or maintained on any lot, except that two or more such main buildings may be erected, located or maintained on a lot if the building area in which each such main building and its accessory structures are located has, separate and distinct from the building area for any other main building on the same lot, at least the minimum lot frontage, the minimum average width, the minimum lot area, the minimum setback line and yard requirements prescribed by this Title for a lot in that zone.

C. C-1 Zone. In addition to the above main building restriction, in the C-1 zone no separate building designed to be used or used as a dwelling shall be located, constructed or maintained on the same lot with a building designed to be used or used for any business purposes. (Ord. 89-1 § 1, 1989.)