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Thornburg City Zoning Code

PART 3

DISTRICT REGULATIONS

§ 27-301 Zoning District Map.

[Ord. 378, 2/14/2005, § 300]
1. 
The Borough is hereby divided into Zoning Districts, as shown on the official Zoning District Map which, together with all explanatory matter thereon, is hereby adopted by reference and declared to be a part of this chapter.
2. 
The Official Zoning District Map shall be identified by the signature of the Chairman of the Planning Commission, attested by the Borough Secretary and certified by the Borough Engineer, and shall bear the seal of the Borough under the following words: "This is to certify that this is the Official Zoning District Map referred to in Article III of Ordinance Number 378, as amended, of the Borough of Thornburg, Allegheny County, Pennsylvania," together with the date of adoption of this chapter.
3. 
All amendments affecting Zoning District boundaries shall be noted on the Official Zoning District Map by the Borough Engineer, including the date of adoption, and shall be attested to by the Borough Secretary.
4. 
No changes of any nature shall be made in the Official Zoning District Map or matter shown thereof except in conformity with the procedure set forth in this chapter. Any unauthorized change of whatever kind by any person shall be considered a violation of this chapter and punishable as provided under Part 15 of this chapter.
5. 
The Official Zoning District Map, shall be maintained by the Borough Engineer and shall be the final authority as to the current zoning status of land and water areas, buildings and other structures.

§ 27-302 Zoning Districts.

[Ord. 378, 2/14/2005, § 301]
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:
Class
Type
Full Name
S
S
Conservancy District
P
P-1
Active Public Park District
P-2
Passive Public Park District
R
R-1
Residential District
R-H
Residential Historic District
R-2
Residential District
I
I-1
General Industrial District
The term "P" 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, R-2 and R-H Districts and the term "P District" includes the P-1 and P-2 Districts.

§ 27-303 District Boundaries.

[Ord. 378, 2/14/2005, § 302]
1. 
Where uncertainty exists as to the boundaries of Zoning Districts as shown on the Official Zoning District Map, the following rules shall apply:
A. 
Boundaries indicated as following the centerlines of streets, highways, or alleys shall be construed to follow such centerlines.
B. 
Boundaries indicated as following platted lot lines shall be construed as following such lot lines.
C. 
Boundaries indicated as following municipal limits shall be construed as following municipal limits.
D. 
Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.
E. 
Boundaries indicated as following the centerlines of streams, rivers, or other bodies of water shall be construed to follow centerlines, and in the event of change in the location of streams, rivers, and other bodies of water, shall be construed as moving with the actual body of water and following the centerline.
F. 
Distances not specifically indicated on the Official Zoning Map shall be determined by the scale of the map.

§ 27-304 District Regulations.

[Ord. 378, 2/14/2005, § 303]
1. 
The following regulations shall apply in all Zoning Districts:
A. 
In the S, R-1, R-2, R-H, P-1 and P-2 Districts, any use not specifically listed in the authorized uses for the Zoning District shall not be permitted in that Zoning District.
B. 
In the I-1 District, 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 Zoning Hearing Board as a use by special exception. The authority for the Zoning Hearing Board to grant approval of a use which is not specifically listed in the authorized uses for a Zoning District as a use by special exception shall be limited to those uses which meet the applicable express standards and criteria for "comparable uses not specifically listed" specified in § 27-1304F of this chapter.
C. 
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.
D. 
In all Residential "R" and Conservancy "S" Zoning Districts, when a single-family dwelling is proposed, only one principal structure shall be permitted on a lot.
E. 
In the R-2 District, two or more two-family dwellings and/or multi-family dwellings may occupy the same lot.
F. 
In all Zoning Districts where authorized by this chapter, 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.
G. 
In all Zoning Districts, all accessory structures shall be located on the same lot with the principal structure to which they are accessory.
H. 
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.