No land shall be hereafter used or occupied and no building or part thereof shall hereafter be used, occupied, erected, moved or altered unless in conformity with the regulations and Limiting Schedule hereinafter specified for the district in which it is located.[1]

No building shall be designed, erected or altered to accommodate or house a greater number of families and/or to have a narrower or smaller front yard, rear yard or side yard than specified herein for the district in which such building is located.

No part of a yard or other open space required about any building for the purpose of complying with the provisions of this chapter shall be included as a part of a yard or other open space similarly required for another building.

No lot shall be so reduced in area that it does not meet the area requirements or be so reduced that any required open space will be smaller than prescribed in the regulations for the district in which said lot is located.