1.   Lots shall comply with the minimum area, lot width and yard requirements established for the zoning district in which the lot is located.

2.   No lot shall contain more than one principal use.

3.   Structures or projections into the side yards may be permitted as follows: fences, plantings, or walls not over six feet above the average natural grade.

4.   No lot, yard, court, parking area or other open space shall be so reduced in area or dimension as to make any such area or dimension less than the minimum required by this chapter, and if already less than the minimum required, it shall not be further reduced. No required open space provided about any building or structure shall be included as part of any open space required for another building or structure.

5.   In any district where one-family detached dwellings are permitted, a one-family detached dwelling may be constructed on any lot of official record at the time of enactment of the regulations contained in this chapter, the owner or which does not own any adjoining property, provided that proposed yard spaces satisfy requirements stipulated for the district in which said lot is located.

6.   Any corner lot shall meet the front yard requirements established for the zoning district in which the lot is located on both sides which abut streets.