Where a zone boundary or permitted use classification under the Design Guidelines divides a single lot or two separate lots under common ownership where the development of one such lot independently under applicable development regulations would result in the elimination of access to a public street from the other lot, the location of such boundary, unless the same is indicated by dimensions shown on the Map, shall be determined by the following: In the event that the boundary line of a zone or permitted use classification under the Design Guidelines shall divide a lot or two lots under common ownership between the front or street line and the rear line, the use regulations, height and area regulations of the zone in which lies the portion of the lot or lots abutting a public street shall govern and control the entire lot or lots. In the event that the boundary line of a zone or permitted use classification under the Design Guidelines shall divide a lot or two lots under common ownership between the side lines thereof, the use regulations and height and area regulations of the zone in which lies the greater portion of the lot or lots abutting a public street shall govern and control the entire lot or lots. In the further event that the boundary line of the zone or permitted use classification under the Design Guidelines shall divide a corner lot or two corner lots under common ownership in any manner, the property line thereof containing the lesser distance abutting either public street shall be considered as the front or street, line of such lot for the purpose of application of the foregoing rules.