A.
Continuation. The lawful use of a building or land existing on the effective date of this chapter may be continued although such use does not conform to the provisions of this chapter.
B.
Extension. A building housing a nonconforming use may be extended upon the lot occupied by such building held in single and separate ownership at the effective date of this chapter when authorized as a special exception by the Zoning Hearing Board in accordance with the standards set forth in § 162-61, provided that the Zoning Hearing Board in granting such special exception may impose other requirements on the extension of a building housing a nonconforming use so that the extended building will conform in all respects to the area, setback and bulk regulations and design standards which apply in the district in which the building is located; provided further that the applicant shall have the burden of proof that his application falls within the provisions of this chapter and that the granting of his application will not be contrary to the public interest.
C.
Restoration. A nonconforming building which has been damaged or destroyed by fire or other casualty may be reconstructed and used for the same nonconforming use, provided that the reconstructed building shall not exceed in height, area and volume the building destroyed and that building reconstruction shall be commenced within one year from the date the building was destroyed and shall be carried on without interruption.
D.
Cessation of nonconforming use. If a nonconforming use of land or of a building ceases for a continuous period of one year or more, subsequent use of such building or land shall be in conformity with the provisions of this chapter.