The regulations set by this article within each district shall be minimum regulations and shall apply uniformly to each class or kind of structure of land. Except as otherwise provided in this article:

(1)

No building, structure or land shall hereafter be used or occupied, and no building or structure or part thereof shall hereafter be erected, constructed, reconstructed, moved or structurally altered except in conformity with all the regulations herein specified for the district in which it is located.

(2)

No building or other structure shall hereafter be erected or altered:

a.

To exceed the height or bulk limitations;

b.

To accommodate or house a greater number of families;

c.

To occupy a greater percentage of lot area;

d.

To have narrower or smaller rear yards, front yards, side yards or other open spaces;

than herein required, or in any other manner contrary to the provisions of this article.

(3)

No part of a yard or other open space or off-street parking or loading space required about or in connection with any building for the purpose of complying with this article shall be included as part of a yard, open space or off-street parking or loading space similarly required for any other building.

(4)

No yard or lot existing at the time of passage of this article shall be reduced in dimension or area below the minimum requirements set forth herein. Yards or lots created after the effective date of this article shall meet at least the minimum requirements established by this article. Notwithstanding any other provision of this article to the contrary, no existing yard, lot, building site or parcel (or contiguous combination thereof) shall, without prior variance or subdivision approval, be sold, conveyed or subdivided, in whole or in part, in such a manner as to cause a residential or an accessory structure to be located in whole or in part within any setbacks required by the provisions of this article applicable to the zoning district in which that structure is located. No sale, conveyance or subdivision in violation of the above shall be recognized as valid for the purpose of issuance of building permits.

(5)

All territory which may hereafter be annexed to the city shall be considered to continue to retain the zoning requirements of its prior governmental jurisdiction until an appropriate zoning district for the city can be established in accordance with the procedures outlined in this article.