Alteration or Enlargement of Buildings and Structures. A nonconforming building or structure shall not be added to or enlarged in any manner unless the building or structure, including additions and enlargements, is made to conform to all of the regulations of the district in which it is located; provided, however, that if a building or structure is conforming as to use, but nonconforming as to yards or height or off-street parking space, the building or structure may be enlarged or added to provided that the enlargement or addition complies with the yard and height and off-street parking requirements of the district in which the building or structure is located. No nonconforming building or structure shall be moved in whole or in part to another location on the lot unless every portion of the building or structure is made to conform to all of the regulations of the district in which it is located.

Outdoor Advertising Signs and Structures. Any advertising sign, billboard, commercial advertising structure, or statuary, which is lawfully existing and maintained at the time this ordinance became effective, which does not conform with the provisions hereof, shall not be structurally altered and all nonconforming advertising signs, billboards, commercial advertising structures and statuary, and their supporting members shall be completely removed from the premises not later than three years from the effective date of this ordinance.

Building Vacancy. A building or structure or portion thereof, which is nonconforming as to use, which is or hereafter becomes vacant and remains unoccupied for a continuous period of one year shall not thereafter be occupied except by a use which conforms to the use regulations of the district in which it is located.

Change in Use. A nonconforming use of a conforming building or structure shall not be expanded or extended into any other portion of such conforming building or structure or changed except to a conforming use. If such a nonconforming use, or a portion thereof, is discontinued or changed to a conforming use, any future use of such building, structure or portion thereof shall be in conformity with the regulations of the district in which such building or structure is located. A vacant or partially vacant nonconforming building or structure may be occupied by a use for which the building or structure was designed or intended if occupied within a period of one year after the effective date.

The nonconforming use may not be extended, nor shall it occupy more area than was in use on the effective date of this ordinance.

If the nonconforming use or any portion thereof is discontinued for a period of six months, or changed, any future use of such land, or change in use, shall be in conformity with the provisions of the district in which the land is located.