(A) Permitted use. In R-1, unless otherwise provided in this chapter, no building or land shall be used and no building shall hereafter be erected or structurally altered, except for one or more of the following uses:
(1) One- or two-family dwellings and their accessory buildings, apartments, flats and manufactured homes;
(2) Plant nurseries or greenhouses; farms or truck gardens, but no retail stand for the display or sale of agricultural products or any other commercial structure shall be located thereon without a conditional use permit;
(3) Public parks and playgrounds. golf courses or clubs;
(4) Churches, libraries, museums, schools, memorial buildings, including name plates and bulletin boards placed in back of the prescribed setback lines;
(5) Boarding and lodging houses; and
(6) The following uses, but only upon securing of a conditional use permit as provided in § 902.03 of this chapter:
(a) Hospitals, clinics and other buildings used for the treatment of human ailments;
(b) Automobile courts;
(c) Philanthropic and charitable institutions;
(d) Home which are transportable structures and designed to be used as a dwelling, but do not meet the standards of a manufactured home in some way;
(e) Manufactured home parks; and
(f) Hotels, when located within 500 feet of the central business districts: or when located on a lot facing a public park, playground, school ground or other public institution: college, church or other semi-public institution; but no business shall be conducted therein unless it is incidental and only for guests and can be entered only from the inside of the building.
(B) Height regulations. No building in the R-1 District shall hereafter be erected or structurally altered to exceed 35 feet or two and one-half stories in height.
(C) Building site regulations. In the R-1, every building designed for the housing of one or two families, together with its accessory buildings, shall be located on a building site in one ownership having an area of not less than 7,000 square feet. Every building designed for more that two families shall be located on a building site in one ownership having not less than 3,500 square feet per family; except that, the following parcels may be used as building sites for dwellings if all other regulations for the district required by this chapter are complied with: any parcel under one ownership at the time of adoption of this chapter when the owner thereof owns no adjoining land.
(D) Front yard requirements. Each lot in the R-1 District shall have a front yard of not less than 25 feet.
(E) Side yard requirements. Each lot in the R-1 District shall have two side yards, one on each side of the building, for every dwelling hereafter erected or structurally altered which does not exceed one and one-half stories, each side yard shall have a width of not less than five feet. For every such dwelling that has two stories, each side yard shall have a width of not less than eight feet. For every dwelling of two and one-half stories each side yard shall have a width of at least ten feet. The foregoing requirements for side yards shall be subject to the following modifications.
(1) The width of each side yard may be reduced to 10% of the width of any side yard be less than four feet:
(a) Any parcel of an average width of less than 40 feet which parcel was under one ownership at the time of the adoption of this chapter when the owner owns no adjoining land; and
(b) Any parcel that includes not less than one entire lot as shown on any subdivision plat recorded in the office of the Register of Deeds of this county, before adoption of this chapter.
(2) On a corner lot adjacent to a key lot, the side yard on the street side of such corner lot shall have width in addition to the here in before specified so that the total width of such side yard shall be equal to not less than 500% of the front yard depth required for the lots to the rear of such corner lot, to a maximum width required of 12 feet for such side yards; but this regulation shall not be so applied as to reduce the buildable width after providing the required interior side yard of any such corner lot to less than 20 feet.
(3) In case a dwelling is located on a lot that its front or rear faces any side lot line, the dwelling shall be not less than 25 feet from the lot line.
(4) A church, library, museum, school or memorial building shall have a side yard of 25 feet on each side adjoining a dwelling or vacant lot.
(F) Rear yard requirements. Each lot in the R-1 District shall have a rear yard of a depth equal to 20% of the depth of the lot to a maximum required depth of 25 feet for such yard (15 feet used if no alley/right-of-way access).