Legally nonconforming structures may be altered if they are not expanded, the use is not changed, and the exterior of the structure is made to conform to the specific rules and regulations, if any, existing on the date of the alteration and governing the appearance of the exterior of structures in the zoning district in which the structure is located. However, nonconforming structures or uses may be expanded or changed to a more restrictive use if granted permission by the board of adjustment and appeals as a special exception in accordance with article VIII. When the nonconforming use is a structure's penetration into a setback, only the portion of the structure that is not violating the setback may be expanded, the portion of the structure that is in violation of a setback may not be expanded in any horizontal or vertical direction.

(Ord. No. 2010-05, § 1, 3-18-10)