(A) Group or private usable open space shall be provided for each dwelling unit in the RM, OR, CN, CS, and CW Districts as prescribed in the zoning schedule set forth in § 155.025 of this title. Each square foot of private usable open space shall be considered equivalent of two square feet of group usable open space and may be so substituted. All required usable open space shall be planted area, or shall have a dust free surface, or shall be water surface, provided that not less than 10% of the required group usable open space at ground level shall be landscaped with trees and other plant materials suitable for ornamentation. No required usable open space shall be located in a parking area, driveway, service area, or required front yard or have a slope greater than 10%.
(B) Group usable open space shall have a minimum area of 300 square feet, and a square inscribed within it shall have a minimum dimension of 15 feet. Required space may be located on the roof of an attached garage or carport, but not more than 20% of the required space shall be located on the roof of a building containing habitable rooms.
(C) Private usable open space located at ground level shall have a minimum area of 150 square feet, and a square inscribed within it shall have a minimum dimension of 10 square feet, and a square inscribed within it shall have a minimum dimension of five feet. Private usable open space shall be adjacent to, and not more than four feet above or below, the floor level of the dwelling unit served. Not more than 50% of ground level space may be covered by an overhang, balcony, or patio roof. Aboveground level space shall have at least one exterior side open above the railing height.
(D) Usable open space shall be permanently maintained by the owner in a neat and orderly condition.
('63 Code, § 10-5.2929) (Ord. 417-C.S., passed 12-6-84; Am. Ord. 512-C.S., passed 3-8-90) Penalty, see § 150.999