The regulations set forth in this chapter, or set forth elsewhere in this title when referred to in this chapter, are the "B" multiple dwelling district regulations. (Prior code § 11-3-2 (a))

   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))

   Whenever a structure is erected, converted or structurally altered for multiple dwelling or two-family dwelling purposes, one parking space shall be provided on the lot for each dwelling unit in the structure. (Prior code § 11-3-2 (c))

   The height regulations are the same as those in the "A" single-family dwelling district. (Prior code § 11-3-2 (d))

   A.   The yard regulations shall be the same as in the "A" single-family dwelling district.

   Every lot shall contain an area of not less than twenty-five hundred square feet per family. (Prior code § 11-3-2 (e) (3))