The regulations set by this chapter within each district shall be minimum regulations and shall 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, 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 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 chapter, shall be included as part of a yard, open space, or off-street parking or loading space similarly required for any other building.
3. No yard or lot existing as of the effective date 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.
4. Whenever the requirements of this chapter are at variance with the requirements of any other lawfully adopted rules, regulations, ordinances, deed restrictions, or covenants, the most restrictive or that imposing the higher standards shall govern.
5. All structures existing, as of the effective date of this chapter and which comply with the terms and conditions of this chapter, shall be considered lawful and be allowed to continue and exist or be reconstructed as they currently exist.