Seven districts, RI, R2, R3, R4, Business-Professional Office District(BPO), Distinguished Residential-Professional Office District(DRPO), Residential Business Special District(RB) are established for residential and business and professional office use in conformity with the types of neighborhoods which have occurred and are likely to develop in the areas so designated on the Zone Map. The districts differ primarily with respect to requirements of lot size, building ground floor area and the number of families which may be housed in one building, and the business- professional office is allowed in both the Business-Professional Office District and the Distinguished Residential-Professional Office District. The specific requirements for each Residence, Business-Professional Office District and Distinguished Residential-Professional Office District are shown in Section 1323.04. Certain nonresidential contingent uses are automatically permitted in these districts (see Section 1335.03) and some special exceptions (see Section 1339.04) may be permitted in them with the approval of the Board of Zoning Appeals. A brief description of each of these districts follows:
(a) R1. This district is established for single-family residential use in conformity with the types of neighborhoods which have occurred and are likely to develop in the areas as classified in the Zone Map. Certain nonresidential contingent uses are automatically permitted in these districts (see Section 1335.03) and some special exceptions may be permitted in them (see Section 1339.04) with the approval of Board.
(b) R2. This is a single-family dwelling district. Requirements for minimum lot size and ground floor area of structures are considerably less stringent than the requirements for the R1 District.
(c) R3. This district is established to permit single-family and two-family dwellings. Normally, this district is located in areas where many two-family dwellings have already occurred and are acceptable in the neighborhoods so zoned.
(d) R4. The R4 District will permit residential use without limitation as to the number of families to be housed in a building so long as the prescribed lot area per family can be provided. Many apartments and two-family dwellings occur in the R4 District, as well as many large, older homes which would be suitable and adaptable for multi-family use.
(e) BPO. The Business-Professional Office District will permit residential use without limitation as to the number of families to be housed in a building so long as the prescribed lot area per family can be provided. Many apartments and two-family dwellings occur in the Business-Professional Office District, as well as many large, older homes which would be suitable and adaptable for multi-family use, provided however, that a business-professional office may be located in a Business- Professional Office District, but such business-professional office shall comply with all the requirements as set forth in Sections 1327.02(12), 1327.03 and 1327.07.
(f) DRPO. The Distinguished Residential-Professional Office District shall permit residential use limited to one and two-family dwellings. The business professional office shall also be allowed in this District. However, both residences and pro fessional offices in this district are subject to more stringent requirements with regard to signs and parking than in other districts under this article. In addition, the business professional office shall comply with all the requirements as set forth in 1327.02 (12), and Sections 1327.03 and 1327.07.
(g) RB. This district is established to permit single-family and two-family dwellings while accommodating the B3 District uses as a special exception where the B3 uses can be sited without conflict of the varying uses.