10-16-5: ENLARGEMENT; ALTERATIONS:
   A.   A lawfully existing nonconforming structure or structure containing a legally existing nonconforming use may expand its gross floor area by ten percent (10%) if the following criteria are satisfied:
      1.   A complete building permit application shall be submitted to the building inspections division, found satisfactory and issued prior to the commencement of any work on the expansion.
      2.   The structure expansion shall meet all of the bulk standards for the zoning district within which the structure is located. A variance may be applied for if the structure expansion could not meet the respective bulk standards. The variance application and its review by the city shall be regulated according to section 10-3-4 of this title.
      3.   If an expansion is requested under this subsection, the city may impose standards and/or conditions upon the underlying nonconforming use or structure for purposes of health, safety or welfare.
   B.   A lawfully existing nonconforming structure or structure containing a legally existing nonconforming use may conditionally expand its gross floor area by up to thirty percent (30%) if the following criteria are satisfied:
      1.   A complete conditional use permit application shall be applied for and approved by the city council. Chapter 3, article A of this title shall regulate the city review and approval or denial of the conditional use permit.
      2.   A complete building permit application shall be submitted to the building inspections division, found satisfactory and issued prior to the commencement of any work on the expansion.
      3.   The structure expansion shall meet all of the bulk standards for the zoning district within which the structure is located. A variance may be applied for if the structure expansion does not meet the respective bulk standards. The variance application and its review by the city shall be regulated according to section 10-3-4 of this title.
      4.   If an expansion is requested under this subsection, the city may impose standards and/or conditions upon the underlying nonconforming use or structure for purposes of health, safety or welfare.
   C.   Alterations or improvements may be made to a building containing lawful nonconforming residential units when they will improve the livability thereof, provided they will not increase the number of dwelling units or bulk of the building, except that a garage may be added if none previously existed. (Ord. 1198, 11-9-2009)