1.   Permitted Uses.

   A.   All uses allowed by right in the Residence R-1 District.

   B.   Two-family dwellings.

   C.   Boarding house.

   D.   Zero lot line units.

2.   Uses Allowed by Special Exception by the Board of Adjustment.

   A.   All uses allowed by special exception in the Residence R-1 District.

   B.   Conversion into two-family, in accordance with Subsection 3 of this section.

   C.   Child Care Centers under the following conditions:

      (1)   Any person who operates in the City a child care center where there are more than six children shall first make application for a special exception permit. Said application to be available at the office of the Clerk.

      (2)   Upon receipt of a completed and executed application, the Clerk shall present the said application to the Board of Adjustment at its next regular meeting. The Board of Adjustment shall establish a date for public hearing within 30 days and authorize the Clerk to send written notice by ordinary mail to all persons living in or owning property within 500 hundred feet of the proposed child care center.

      (3)   At the public hearing all persons shall be heard upon the issues of the location, number of children, loading, parking and safety. At the close of said meeting the Board of Adjustment will set a time within 30 days when it shall act to issue or refuse to issue a special exception permit.

      (4)   If a special exception permit is issued, the Board of Adjustment may set reasonable standards as to number of children, parking, loading and other safety and nuisance standards, but in any event all standards established by the State of Iowa must be met.

3.   Area Regulations.

   A.   Lot Area and Width.

      (1)   Single-family Structures. A lot area of not less than 6,000 square feet per family shall be provided for every building hereafter erected or used in whole or in part as a dwelling. Each lot shall have a building line frontage of not less than 60 feet. Any building hereafter so erected shall not be allowed to be converted to a multiple-family dwelling without meeting square footage requirements for multiple-family dwelling in that district.

      (2)   Two-family Dwellings. Two-family dwellings shall have frontage of not less than 70 feet and lot area not less than eight 8,400 square feet.

      (3)   Zero-lot line dwellings shall have a frontage of not less than 35 feet and a lot area of 4,200 square feet.

   B.   Front Yard. There shall be a front yard on each street on which a lot abuts, which yard shall be no less than 25 feet in depth.

   C.   Side Yard. There shall be two side yards on each lot, except for corner lots which have only one side yard, none of which shall be less than eight feet in depth.

   D.   Rear Yard. There shall be a rear yard on each lot, which yard shall not be less than 25 feet in depth.