A. No building or structure shall be erected, converted, enlarged, reconstructed or structurally altered, nor shall any building or land be used for any purpose other than is permitted in the district in which the building or land is located, unless, pursuant to the provisions of this title relating to special uses or planned unit developments, a modified use is authorized.
(1980 Code § 36-19)
B. No application for a building permit or other permit or license, or for a certificate of occupancy shall be approved by the Building Official, and no permit or license shall be issued by any other City department, which would authorize the use or change in use of any land or building contrary to the provisions of this title, or the erection, moving, alteration, enlargement, or occupancy of any building designed or intended to be used for a purpose contrary to the provisions of this title.
(1980 Code § 36-20)
C. No building or structure shall be erected, converted, enlarged, reconstructed or structurally altered, nor shall any building or land be used for any purpose other than that which is permitted in the district in which such building or land is located; and no building or use of land shall conflict with or violate the yard, area and parking requirements of this title.
(1980 Code § 36-23)