In all residence districts, lands shall be used and all buildings shall be erected, altered or used only for those purposes hereinafter designated for the district in which such lands or buildings are situated:
F.
Certain residence, business and industrial districts. Residence for two or more families in an existing residential structure and for an increase in the number of families in an already converted existing residential structure in Residence C and D Districts and business and industrial districts, provided that a permit for such use is first obtained pursuant to the provisions of § 306-39B.
[Amended 3-5-2002 by L.L. No. 5-2002; 8-17-2004 by L.L. No. 6-2004]