[Ord. 5/9/1972, § 900; as amended by Ord. 12/12/1991B, § 24]
1. 
Nonconforming Structure or Lot. A structure or lot that does not conform to a dimensional regulation prescribed by this chapter for the district in which it is located or to regulations for signs, off-street parking or accessory buildings but which structure or lot was in existence at the time the regulation, or amendment thereto, was established.
2. 
Nonconforming Use. A use of a building or lot that does not conform to a use regulation prescribed by this chapter for the district in which it is located but which was in existence at the time the use regulation, or amendment thereto, became effective and was lawful at the time it was established.
[Ord. 5/9/1972, § 910; as amended by Ord. 12/12/1991B, § 24]
1. 
Continuation. Any lawful structure existing on the effective date of this chapter may remain although such structure does not conform to the dimensional requirements of this chapter.
2. 
Restoration. A nonconforming building wholly or partially destroyed by fire, explosion, flood or other phenomenon or legally condemned may be reconstructed, provided reconstruction of the building shall be: (1) commenced within one year from the date the building was destroyed or condemned, (2) carried on without interruption and (3) in accord with all dimensional requirements of this chapter unless a variance is granted by the Zoning Hearing Board.
3. 
Extension or Alteration. A structure that does not conform with the setback yard, building height or other dimensional requirements of the district in which it is located may be extended, provided the extension conforms with all dimensional requirements of this chapter and all other applicable regulations of this chapter.
[Ord. 5/9/1972, § 920; as amended by Ord. 12/12/1991B, § 24]
1. 
Continuation. Any lawfully created lot existing on the effective date of this chapter may be continued although such lot does not conform to the lot requirements for the district in which it is located.
2. 
Construction. The provisions of this chapter shall not prevent the construction of a structure, provided the yard, height and other applicable dimensional requirements are met, or the establishment of a permitted and lawful use on any nonconforming lot. However, this provision shall not apply to any two or more contiguous lots in single ownership as of or subsequent to the effective date of this chapter where reparceling or replatting could create one or more conforming lots.
[Ord. 5/9/1972, § 930]
1. 
Continuation. Any lawful use of a building or land existing at the effective date of this chapter may be continued although such use does not conform to the provisions of this chapter.
2. 
Extension. A use that does not conform to the use regulations of the district in which it is located may be extended, provided:
A. 
Any extension shall take place only upon the lot or contiguous lots held in the same ownership as that existing at the time the uses became nonconforming.
B. 
Any extension shall conform with the area, building height, parking, sign and other requirements of the district in which said extension is located, as contained in Parts 5, 6, and 7.
C. 
Any increase in volume or area of the nonconforming use shall not exceed an aggregate of more than 100% of such volume or area during the life of the nonconformity. For nonconforming uses whose normal operations involve natural expansion (quarries, landfill, cemeteries, etc.), expansion shall be permitted by right up to 50% of the volume or area of the nonconformity. For expansion beyond 50%, a conditional use permit shall be required.
3. 
Changes. Once changed to a conforming use, no structure or land shall be permitted to revert to a nonconforming use. A nonconforming use may be changed to another nonconforming use only under the following conditions.
A. 
Such change shall be permitted only as a special exception under the provisions of Part 11.
B. 
The applicant shall show that a nonconforming use cannot reasonably be changed to a permitted use.
C. 
The applicant shall show that the proposed change will be less objectionable in external effects than the existing nonconforming use with respect to:
(1) 
Traffic generation and congestion, including truck, passenger car and pedestrian traffic;
(2) 
Noise, smoke, dust, fumes, vapors, gases, heat, odor, glare or vibration;
(3) 
Storage and waste disposal;
(4) 
Appearance.
4. 
Abandonment. If a nonconforming use of a building or land ceases and is abandoned 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. For the purposes of this chapter, abandonment shall commence when reasonable efforts to reestablish (such as lease, rental, sale, etc.) a nonconforming use have ceased.