The boundaries of said districts shall be as shown upon the map attached to and made a part of this chapter, which shall be designated the "Zoning Map." Said map, and all notations, references and other things shown thereon, shall be a part of this chapter as if fully described herein.[1]

The boundaries between districts are, unless otherwise indicated, either the center lines of street, lanes, watercourses and rights-of-way of power lines and other public utilities, or such lines extended, or lines parallel thereto. Where the boundaries of a single district are indicated as including directly opposite sides of a street, lane, lake or watercourse for any portion of its length, the district so indicated shall be construed to apply to the entire bed of such street, lane, lake or watercourse lying within such portion of its length. Where uncertainty exists as to the location of any said boundaries as shown on the Zoning Map, the following rules shall apply:

Whenever federally or state-owned property or property owned by any federal or state agency or any political subdivision thereof is included in one or more zoning districts, it shall be subject to the provisions of this chapter only insofar as permitted by the Constitution and laws of the United States of America and the Commonwealth of Pennsylvania.

As of the effective date of this chapter all buildings (erected, altered or used) and all land shall be used in strict conformity with the requirements of this chapter.