Conformity with street or lot lines. Except where referenced on the Official Zoning Map to a street line or other designated line by dimensions shown on said map, the district boundary lines are intended to follow lot lines, the center lines of streets or railroad right-of-way lines or the center of rivers or streams as they existed at the time of enactment of this chapter, or extensions of same.

Divisions of lots of single ownership. Where a district boundary line as established in this section or as shown on the Official Zoning Map divides a lot, the use authorized on, and the other district regulations applying to, the least restricted portion of such lot under this chapter shall be construed as extending to as much of the more restricted portion of such lot as is entirely within 35 feet of said dividing district boundary line.