1.   Permitted Principal Uses.

      A.   Any use or structure permitted and as regulated in Section 165.09, except as hereinafter modified.

      B.   Two-family dwellings. Separate or divided ownership of a single-family dwelling unit, subject to and conditioned upon compliance with the following requirements:

         (1)   The lot or parcel of real estate being divided into two parcels allowing separate ownership thereof must originally meet all of the requirements for uses permitted in a R-2 District.

         (2)   A two-family dwelling must be in existence or will be constructed thereon consisting of two laterally attached dwelling units with each unit having a separate access and utility service.

         (3)   The division of the lot or parcel into two parcels shall be in such a manner as to result in one single-family dwelling unit being located on either side of the common boundary line with the common wall between the two laterally joined single-family dwelling units being on said common boundary line.

         (4)   Prior to division into two parcels there shall be recorded in the Washington County Recorder’s Office restrictive and protective covenants providing that the owners thereof are jointly and severally liable and responsible for the maintenance and repair of the common wall as well as all other common aspects, including (but not limited to) utilities, water, sanitary sewer, storm sewer, easements and driveways, all to the point of division.

         (5)   The two-family dwelling shall, in all respects, other than the division thereof, be considered as any other two-family dwelling and meet all requirements pertaining thereto with express understanding that nothing herein shall be construed to allow the separate other use of one or both of the resulting two parcels of real estate in the event the laterally jointed two-family dwelling unit is partially or totally damaged or destroyed.

   2.   When Authorized by Board of Adjustment.

      A.   Any use as regulated in Section 165.09, except as hereinafter modified.

      B.   Dwelling groups [See Section 165.20].

      C.   Parking areas accessory to a use in an adjoining less restricted district, when abutting or directly across an alley, subject to the applicable conditions stipulated in Section 165.22, and such further conditions as may be stipulated by the Board.

      D.   Hospitals, sanitariums and nursing homes provided that any such buildings shall be at least 50 feet from any lot in any R District. Hospitals shall be located on lots of five acres or more, sanitariums on lots of 10 acres or more and nursing homes on lots of 20,000 square feet or more.

      E.   Residence development projects exempt from district height regulations [See Section 165.20].

   3.   Permitted Accessory Uses.

      A.   R-1 Residence District accessory uses.

      B.   Signs as regulated by Section 165.21.

   4.   Height Regulations. No principal structure shall exceed two and one-half stories or 30 feet in height, and no accessory structure shall exceed one story or 15 feet in height, except as provided in Section 165.24.

   5.   Lot Area, Frontage, and Yard Requirements. The following minimum requirements shall be observed, subject to the additional requirements, exceptions and modifications in Section 165.24. Each one-family residence shall be located on a lot containing at least 6,500 square feet. Each structure containing more than one family shall be located on a lot having an area of 5,000 square feet for each family.