A. 
Within the districts established by this chapter or amendments that may later be adopted there exist lots, structures and uses of land and structures which were lawful before this chapter was passed or amended, but which would be prohibited under the terms of this chapter or future amendment.
B. 
It is the intent of this chapter to permit these nonconformities to continue until they are removed. Such uses are declared by this chapter to be incompatible with permitted uses in the districts involved. Nonconformities may be enlarged as decided by the Zoning Hearing Board.
C. 
A nonconforming use of a structure, a nonconforming use of land or nonconforming use of a structure and land shall not be extended or enlarged after passage of this chapter by: the addition of other uses if such additions are of a nature which would be prohibited generally in a district; or the attachment of additional signs or display devices on the land outside the building.
D. 
Nothing in this chapter shall be deemed to require a change in the plans, construction or designated use of any building on which actual construction was lawfully begun prior to the effective date of adoption or amendment of this chapter and upon which actual building construction has been continuously carried on. Actual construction includes the placing of construction material in permanent position and fastened in a permanent manner, and demolition, elimination and removal of an existing structure in connection with such construction, provided that actual construction work shall be continuously carried on until the completion of the building involved.
For nonconformance lots of record, the owner shall apply to the Zoning Hearing Board for the appropriate variances for the use of said lot. If two or more lots with continuous frontage in single ownership and if all or part of the lots do not meet the requirements for lot width and area in the respective district, the lands involved shall be considered to be an undivided parcel for the purpose of this chapter. No portion of said parcel shall be used which does not meet lot width and area requirements established by this chapter.
Where lawful use of land exists that is made no longer permissible under the terms of this chapter as enacted or amended, such use may be continued, subject to the following provisions:
A. 
No such nonconforming use shall be expanded to occupy a greater area of land than was occupied at the effective date of this chapter, except as specified by § 72-23 of this chapter.
B. 
No such nonconforming use shall be moved to any other portion of the lot occupied by such use at the effective date of this chapter.
C. 
If any such nonconforming use of land ceases for any reason for a period of more than 12 months, any subsequent use of such land shall conform to the regulations for the district in which such land is located.
Where a lawful structure exists that could not be built under the terms of this chapter, such structure may be continued so long as it remains otherwise lawful, subject to the following provisions:
A. 
A structure may not be enlarged or altered unless a variance is granted by the Zoning Hearing Board.
B. 
Should such structure be destroyed by fire, flood, explosion or other casualty, to an extent of more than 50% of its replacement cost at time of destruction, it shall not be reconstructed except in conformity with the provisions of this chapter unless a variance is granted by the Zoning Hearing Board. Replacement cost shall be determined by obtaining cost of reconstruction from the following sources: one building contractor selected by the owner; and one building contractor selected by the borough. The average cost of replacement will then be ascertained after receipt of both costs.
C. 
Should such structure be moved for any reason, it shall thereafter conform to the regulations for the district in which it is located after being moved.
If a lawful use of a structure, or of a structure and premises in combination, exists that would not be allowed in the district, the lawful use may be continued subject to the following provisions:
A. 
An existing structure devoted to a use not permitted in the district in which it is located may not be enlarged, extended, constructed, reconstructed or structurally altered unless a variance is granted by the Zoning Hearing Board.
B. 
Any nonconforming use may be extended throughout any parts of a building, but no such use shall be extended to occupy any land outside such building.
C. 
If no structural alterations are made, any nonconforming use of a structure, or structure and premises, may be changed to another nonconforming use, provided that the Zoning Officer shall find that the proposed use is equally or more appropriate to the district than the existing nonconforming use. Applications for changes to nonconforming uses, structures or lots which are equal or less nonconforming may follow normal permit procedures under the Zoning Officer.
D. 
Once a nonconforming use is superseded by a permitted use, the nonconforming use shall not be resumed.
E. 
When a nonconforming use of a structure, or structure and premises in combination, is discontinued or abandoned for 12 consecutive months, it shall not be used except in conformance with the regulations of the district in which it is located.
F. 
When nonconforming use status applies to a structure and premises in combination, removal or destruction by the owner of the structure shall eliminate the nonconforming status of the land, unless the structure is rebuilt within 12 months.
A. 
On any building, devoted in whole or in part to any nonconforming use, work may be done on ordinary repairs, or on repair or replacement of nonbearing walls, fixtures, wiring or plumbing without the requirement of a permit.
B. 
Nothing in this chapter shall be deemed to prevent the strengthening or restoring to a safe condition of any building or part thereof declared to be unsafe by any official charged with protecting the public safety, upon order of such official.
Notwithstanding the limitations imposed by any other provisions of this chapter, the Zoning Officer may permit erection of a structure on any lot of record separately owned or under contract of sale and containing, at the time of passage of this chapter, a width smaller than that required in this chapter for the R-A and R-B Districts. In no case shall any structure be permitted within eight feet of a lot line as measured at the building line. It shall be the responsibility of the Zoning Officer to review all permits issued under this section with both the Planning Commission and the Borough Council prior to issuing of said permit and obtain signatures from both of these bodies that said permit has been reviewed.