The following provisions apply to nonconforming uses, buildings and structures in the City:

   1.   A nonconforming use, although such does not conform to the provisions of this chapter, may be continued, but if such nonconforming use is discontinued for a period of one year, any future use of said premises shall be in conformity with the provisions of this chapter.

   2.   Nonconforming buildings or structures may not be extended or enlarged.

   3.   Nothing in this chapter prevents the reconstruction of a building or structure used for a nonconforming use if 50% or less is destroyed by fire or other calamity or prevents the continuance of the use of such building or structure or part thereof as such use existed at the time of such destruction, provided that any reconstruction shall be begun within six months after such destruction and shall be diligently pursued thereafter.

   4.   A single-family dwelling may be built on a nonconforming lot that was legally platted prior to the date of enactment of Ordinance No. 269. Such lot must be in a separate ownership and not of continuous frontage with other lots of the same ownership. Two or more continuous frontage lots under one ownership at the time of the adoption of the ordinance codified by this chapter shall be considered an undivided parcel. No portion may be used or sold nor shall any portion remain after such sale or use that does not conform to area and width requirements of this chapter.

   5.   Uses which were in violation of Ordinance No. 269 shall also be in violation of the ordinance codified herein and shall not become nonconforming uses by virtue of repeal of Ordinance No. 269 and enactment of this Zoning Ordinance.