10-5-1: CONTINUANCE OF USE:
   A.   Any lawfully established use of a building or land that does not conform to the use regulations for the district in which it is located shall be deemed to be a legal nonconforming use and may be continued, except as herein otherwise provided. (Ord. B-39, 1969)
   B.   Any legal nonconforming use of a building or structure may be continued, provided there are no physical changes other than necessary maintenance and repair. If no structural alterations are made, a nonconforming use of a building may be changed to another nonconforming use of the same classification or of a more restricted classification. Whenever a nonconforming use has been changed to a more restricted use or to a conforming use, such use shall not thereafter be changed to a less restricted use. (Ord. C-138, 11-3-1992)
   C.   Any building for which a permit has been lawfully granted may be completed in accordance with the approved plans, provided construction is started within ninety (90) days and prosecuted to completion within six (6) months. Such building shall thereafter be deemed a lawfully established building. (Ord. B-39, 1969)