Prior to the adoption of Ord. 2005-07 on 06/01/2005, Section 16.12.040 read as follows.

    A.    The nonconforming noncomplying use of a building or structure existing at the time the applicable zoning regulations became or become effective may be continued.
    B.    A vacant nonconforming noncomplying building or structure may be occupied by a use for which the building or structure was designed or intended if so occupied within a period of one (1) year after the building or structure became nonconforming.
    C.    A nonconforming use may be extended to include the entire floor area of the existing building in which it was conducted at the time use became nonconforming.
    D.    Except by permit of the Board of Adjustment as provided in Chapter 16.10 of this title, the nonconforming use of a building or structure may not be changed except to a conforming use; however, where such change is made to a conforming use, the use shall not thereafter be changed back to a nonconforming use. (PZSC § 03-05-004)