The regulations set by this chapter within each district are minimum regulations and apply uniformly to each class or kind of structure or land, and particularly, except as hereinafter provided:
1. No building, structure, or land shall hereafter be used or occupied and no building or structure or part thereof shall hereinafter be erected, constructed, reconstructed, moved, or structurally altered unless in conformity with all of the regulations herein specified for the district in which it is located.
2. No building or other structure shall hereafter be erected or altered to exceed the height, to accommodate or house a greater number of families, to occupy a greater percentage of the lot area, or to have narrower or smaller rear yards, front yards, side yards, or other open spaces, when herein required, or in other manner contrary to the provisions of this chapter.
3. No part of a yard, or other open space, or off-street parking or loading space required under or in connection with any building for the purpose of complying with this chapter, shall be included as a part of a yard, open space or off-street parking or loading space similarly for any other building.
4. No yard or lot existing at the time of passage of this chapter shall be reduced in dimension or area below the minimum requirements set forth herein. Yards or lots created after the effective date of this chapter shall meet at least the minimum requirements established by this chapter.
5. Not more than two (2) buildings shall be permitted on any lot, tract, or parcel of land until the same has been platted in accordance with the laws of the State of Iowa; and, no principal building shall be permitted on any lot formed by the process of dividing a lot of record or putting together pieces or parts of platted lots of record except pursuant to a special use permit issued by the Zoning Board of Adjustment after notice mailed to all owners and occupants of land within two hundred feet of the site, hearing, and finding that issuance of the permit will not contribute excessively to any adverse effect on infrastructure, city services, traffic and parking, or property values in the locale. Special protective conditions may be imposed and the Board shall call for and consider the evaluation and opinions of the City’s professional staff in making its decision.
6. No building in the rear of any principal building on the same interior lot shall be used for residence purposes, except as may be otherwise specifically provided in this chapter.
7. Any lot upon which a principal building is placed shall abut on, and be accessible by means of, a city street, permanent easement or public place with not less than twenty feet of frontage on such street, permanent easement or public place.
The driveway, apron or entrance access from the front property line to the public street shall be paved with concrete not less than six (6) inches in residential districts and concrete not less than eight (8) inches in thickness in commercial or industrial districts.
8. Nothing in this chapter shall prevent the restoration of any wall or other portion of a building declared unsafe by the Chief Building Official.