A building or premises shall be used only for the following purposes:
(a) Any use permitted in the R-3 Two-Family Residence District;
(b) Multiple-family dwellings;
(c) Boarding or rooming house or tourist home;
(d) Private club, fraternity, sorority or lodge, except one the chief activity of which is a service customarily carried on as a business; or
(e) Accessory building or use customarily incident to any of the above uses, including a storage garage, on a lot occupied by a multiple dwelling, hospital or institution.
(2004 Code)