For the purpose of this chapter, the Village of Lake Success is hereby divided into classes of districts as follows:

The boundaries of these districts are hereby established as shown on the official Zoning Map which accompanies and is hereby declared to be a part of this chapter.[1] The district boundaries are, unless otherwise indicated, either street lines or lines drawn parallel to and 100 feet back from one or more of the street lines bounding the block. Where two or more district designations are shown within a block 200 feet or less in width, the boundary of the more restricted district shall be deemed 100 feet back from the street line. Where two or more district designations are shown within a block more than 200 feet in width, the boundary of the less restricted district shall be deemed 100 feet back from its street line. In case of doubt, however, a district boundary line shall be determined by scaling the Building Zone Map.