For the purposes of this chapter, the Village of Huntington Bay is hereby divided into eight classes of residential districts which shall be designated as follows:

The boundaries of said districts shall be shown upon the map attached to and made a part of this chapter, which shall be designated as the "Amended Building Zone Map of the Village of Huntington Bay, Suffolk County, N.Y." The said map and all notations, references and other things shown thereon shall be as much a part of this chapter as if matters and things shown by said map were all fully described herein.

The boundaries between districts are, unless otherwise indicated, either the center lines of streets or such lines extended or lines parallel thereto. Where figures are shown on the Zoning Map between a street and a district boundary line, they indicate that the district boundary line runs parallel to the street line at a distance therefrom equivalent to the number of feet so indicated. When the location of a district boundary line is not otherwise determined, it shall be determined by the scale of the map measured from a given line. Where the street layout actually on the ground varies from the street layout as shown on the Amended Building Zone Map, the designation shown on the mapped streets shall apply in such a way as to carry out the intent and the purpose of this chapter for the particular area in question.

Where a district boundary line divides a lot in single ownership at the time of the passage of this chapter, the Board of Appeals, as hereinafter provided, may permit the less restricted use to extend to the whole or any part of such lot.