The Regulations for each district set forth by this Zoning Code shall be the minimum Regulations and shall apply uniformly to each class or kind of structure or land, except as hereinafter provided.
(a) No building, structure, or land shall be used or occupied and no building, structure, or part thereof shall be erected, constructed, reconstructed, moved, or structurally altered except in conformity with all of the regulations specified for the district in which it is located.
(b) Except as otherwise provided in this Zoning Code, no building or other structure shall be erected or altered:
(1) To provide for greater height or bulk;
(2) To accommodate or house a greater number of families;
(3) To occupy a greater percentage of lot area;
(4) To have narrower or smaller rear yards, front yards, side yards, or other open spaces than required in its district, or in any other manner be contrary to the provisions of this Zoning Code.
(c) Except as otherwise provided in this Zoning Code, no yard or lot existing at the time of passage of this Zoning Code shall be reduced in dimension or area below the minimum requirements set forth in the district. Yards or lots created after the effective date of this Zoning Code shall meet at least the minimum requirements set forth in the district.