A building or premises shall be used only for the following purposes:
A. Any use permitted in the "A" single-family dwelling district;
B. Two-family dwellings, containing a floor space of not less than six hundred square *feet per family;
C. Multiple dwelling, containing a floor space of not less than three hundred square feet per family;
D. Professional offices, or studios of doctors, dentists, artists, musicians, lawyers and authors, beauty parlors limited to one operator who is the owner of the premises; provided, that such uses as set forth in this chapter does not violate protective and restrictive covenants concerning subject land;
E. Boardinghouses and lodginghouses;
F. Nonprofit religious, educational and philanthropic institutions, but not penal or mental treatment institutions;
G. Hospitals and clinics, but not animal hospitals, animal clinics or mental hospitals;
H. Private clubs and lodges, excepting those the chief activity of which is customarily carried on as a business;
I. Accessory buildings and uses customarily incident to the above uses not involving the conduct of a business including a private garage. Any accessory building that is not a part of the main structure shall be located not less than sixty feet from the front lot line. (Prior code § 11-3-2 (b))