Except as permitted by special use permit, no use of property in an R-6 District shall be carried on except the following:
Uses permitted in the R-5 District.
Apartment houses, row houses and similar multiple-family dwellings up to twelve (12) dwelling units per building.
Boarding and rooming houses.
Hotels.
Nursery and nursery schools.
Private clubs, fraternities, sororities, lodges except when operated primarily for commercial gain.
Rest and retirement homes.
Signs, as permitted in chapter 18 of this title. (Ord. B-39, 1969)