1. Authority to Continue. Any building, structure or use lawfully established and existing on the effective date of this chapter which does not conform to all of the regulations of the district in which it is located may be continued, subject to the provisions of this chapter.
2. Repairs and Alterations. Repairs and alterations, other than additions or expansions, may be made in or to a nonconforming building, including aging buildings, provided that no substantial improvements as defined herein shall be made in or to such building.
3. Additions and Expansions. A nonconforming building which is nonconforming as to size, height, or setbacks, or which is designed or intended for a use not permitted in the district in which it is located, shall not be added to, expanded, or enlarged unless such addition, expansion, or enlargement conforms to all the regulations of the district in which it is located and unless the entire building thereafter conforms to all of the regulations of the district as to size. A nonconforming use of land shall not be expanded or extended beyond the area it occupies which would make it more nonconforming at the date of the adoption of this chapter.
4. Abandonment/Discontinuation. A nonconforming building, all or substantially all of which is designed or intended for a use which is not permitted in the district in which it is located which is or hereafter becomes vacant and remains unoccupied or is not used for a period of one year, shall not thereafter be occupied or used except in a manner which conforms to the use regulations of the district in which it is located. If a nonconforming use of land is discontinued for a period of two years, such use shall not thereafter be renewed and any subsequent use of the land shall conform to the regulations of the district in which it is located. Whenever a use is changed or replaced by a conforming use, such premises shall not thereafter be used or occupied by a nonconforming use, even though the building may have been originally designed and constructed for the prior nonconforming use.
5. Restoration of a Damaged Nonconforming Building. A building, designed or intended for a use which is not permitted in the district in which it is located, which is destroyed or damaged by fire or other casualty or act of God to the extent that the cost of restoration shall exceed 75 percent of the cost of replacement of the entire building, shall not be restored unless such building and use thereof shall conform to all the regulations of the district in which it is located. If the cost of restoration of such damaged building does not exceed 60 percent of the cost of replacement of the entire building, repairs or reconstruction shall be commenced within one year from the date of the fire or other casualty or act of God and diligently pursued until completion.
6. Uses Under “Special Permit Uses.” Any use for which a special exception is permitted as provided in this chapter shall not be deemed a nonconforming use but shall, without further action, be deemed a conforming use by special permit.