Any lawful nonconforming use of a portion of a building may be extended throughout the building, and any lawful nonconforming building or any building of which a lawful nonconforming use is made, may be extended or enlarged on the lot occupied by such building that is held in single and separate ownership on the effective date of this chapter, provided that the area of such buildings shall not be increased by more than a total of 25% of the area of such building existing on the date it first became a lawful nonconforming building or a building on which a lawful nonconforming use is made, and provided further that any structural alteration, extension, or addition, shall conform with all height, area, width, yard, and coverage requirements, for the district in which it is located.
(1995 Code, § 153.171) (Ord. 68-15, passed 8-22-1968)