11-412 - Alterations, extensions or enlargements LAST AMENDED 12/5/1991 Repairs or #incidental alterations# may be made and in appropriate cases the authorizing agency may permit structural alterations, #extensions# or #enlargements# limited to the #zoning lot# that was granted a variance, exception or permit prior to December 15, 1961. However, the #use# of any #building or other structure# shall not be #extended#, and the #building or other structure# shall not be #enlarged#, in excess of 50 percent of the #floor area# of such #building# (or size of such structure) occupied or utilized by the #use# on December 15, 1961, and, except as otherwise provided in Article VII, no structural alterations, #extensions# or #enlargements# shall be authorized for a new #non-conforming use# authorized under the provisions of Section 11-413 (Change of use).