52-45 - Conforming and Non-conforming Residential Uses in M1-1D Through M1-5D Districts LAST AMENDED 12/5/2024 In M1-1D, M1-2D, M1-3D, M1-4D and M1-5D Districts, a #building# containing #non-conforming# #residential uses# may be #enlarged# and the #residential uses# #extended# thereby, provided that no non-#residential uses# exist above the level of the first #story# ceiling. Such #enlargement# is subject to all of the following regulations: (a) The total amount of #residential# #floor area# in the #building# shall not exceed 500 square feet additional to the #residential# #floor area# in existence on December 21, 1989, or the applicable #floor area ratio# for an R5 District, whichever is less. (b) All remaining #bulk# regulations of a C2 District mapped within an R5 District shall apply. #Enlargements# in excess of those permitted in this Section may be permitted by authorization of the City Planning Commission, pursuant to the regulations of Section 42-311 (Residential uses in M1-1D through M1-5D Districts).