The boundaries of the various zoning districts are hereby established on the map entitled "Official Zoning Map" on file in the office(s) of the Zoning Officer and the Borough Manager. This map with all explanatory matter thereon is hereby made a part of this chapter. The Official Zoning Map shall be dated and shall carry the signature of the President of the Borough Council and the Borough Secretary certifying that it is the true Map adopted by the Council, and the Map shall be sealed with the official Borough Seal. All amendments shall be identified on the Map and similarly certified.

The boundaries between districts are, unless otherwise indicated, either the center line of streets or such lines extended, or parallel lines thereto, or property lines, or other physical boundaries and delineations. Where streets, property lines, or other physical boundaries and delineations are not applicable, boundaries shall be determined by scale shown on the Official Zoning Map.

Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Map or in other circumstances not specifically covered above, the Zoning Hearing Board shall interpret the district boundaries. Where uncertainty exists as to the boundaries of zoning districts as shown on the Official Zoning District Map, the following rules shall apply:

In the event that a street, alley or other way shown on the Zoning District Map is vacated, the property formerly in said street right-of-way shall be included within the zoning district of the adjoining property on either side of said vacated street or way. Where said street forms a zoning district boundary, the new district boundary shall be the new property line created by the former center line of said vacated street.

The Borough is divided into the zoning districts set forth by this chapter and as shown by the zoning district boundaries on the Official Zoning District Map. The zoning districts are:

The designation "R" or "C" or "I" District shall include every type within the class which has the same initial letter. For example, as used in this chapter, the term "R District" includes the R-1 and R-2 Districts.

In the S, R-1 and R-2 Districts, any use not specifically listed in the authorized uses for the zoning district shall not be permitted in that zoning district.

In the C-1, C-2 and I Districts, any use not specifically listed in the authorized uses for the zoning district shall not be permitted in that zoning district, unless such use is authorized by the Borough Council as a conditional use. The authority for the Borough Council to grant approval of a use which is not specifically listed in the authorized uses for a zoning district as a use by conditional use shall be limited to those uses which meet the applicable express standards and criteria for "all other uses not specially listed as permitted or conditional use in any zoning district," as specified in § 225-118 NN of this chapter.

Accessory uses or structures which are customarily accessory to principal structures or uses which are authorized as conditional uses or uses by special exception shall be permitted as accessory uses by right.

In all R Residential and S Conservancy Zoning Districts, when a single-family dwelling or two-family dwelling is proposed, only one principal structure shall be permitted on a lot.

In all zoning districts where authorized by this chapter, two or more multifamily dwellings may occupy the same lot; two or more nonresidential buildings may occupy the same lot; and two or more authorized nonresidential uses may occupy the same building, provided, in all cases, that all applicable requirements for each of the structures or uses can be met on the lot.

In all zoning districts, all accessory structures shall be located on the same lot with the principal structure to which they are accessory.

Where one parcel of property is divided into two or more different zoning district classifications, each portion of the property shall be used independently in its respective zoning district classification and, for the purposes of applying the regulations of this chapter, each portion shall be treated as a separate and distinct parcel.