15.7.1.1: GENERAL:
   A.   Within the districts established by this title there exist lots, structures, uses of land and structures, use of structures, and signs which were lawful, but which would be prohibited, regulated, or restricted under the terms of this title. It is the intent hereof to provide for the elimination of certain nonconformities, to permit some nonconformities to conditionally continue, and to ensure that nonconformities shall not be horizontally or vertically enlarged, increased, expanded or extended, nor be used as grounds for adding other structures or uses prohibited elsewhere in the same district.
   B.   Nonconforming uses are declared by this title to be incompatible with permitted uses in the districts involved. A nonconforming use of a structure and land in combination shall not be enlarged, increased, expanded or extended by the addition of other uses prohibited generally in the district involved.
   C.   Nothing in this title shall be deemed to require a change in the plans, construction, or designated use of any building on which actual construction was lawfully begun but not completed prior to the effective date hereof and upon which actual building construction has been carried on diligently. "Actual construction" is hereby defined to include the placing of construction materials in permanent position and fastened in a permanent manner. Where excavation or demolition or removal of an existing building has been substantially begun preparatory to rebuilding, such excavation or demolition or removal shall be deemed to be actual construction, provided that work shall be carried on diligently. (Ord. 2013-20)