The area of a private road shall be excluded from the area of the zoning lot for the purposes of applying the applicable requirements of Sections 23-14 (Open Space and Floor Area Regulations in R1 Through R5 Districts) or 23-15 (Open Space and Floor Area Regulations in R6 Through R10 Districts) as modified by this Section, and Sections 23-21 (Required Floor Area per Dwelling Unit) and 33-10 (FLOOR AREA REGULATIONS). For the purposes of this Section, the area of the private road shall include the area of the paved roadbed plus a seven-foot wide area adjacent to and along the entire length of the required curbs.

The maximum permitted percentage of lot coverage on a zoning lot shall be determined by Table I or Table II of this Section, as applicable.

TABLE I

PERMITTED PERCENTAGE OF LOT COVERAGE ON A ZONING LOT BY ZONING DISTRICT, AVERAGE PERCENT OF SLOPE AND RESIDENCE TYPE

If an authorization is granted for a development, enlargement or site alteration on a zoning lot or portion of a zoning lot having a steep slope or steep slope buffer pursuant to Section 119-311, the maximum permitted percentage of lot coverage for said zoning lot shall not exceed the maximum set forth in Table II of this Section.

TABLE II

PERMITTED PERCENTAGE OF LOT COVERAGE ON A ZONING LOT OR PORTION OF A ZONING LOT WITH A STEEP SLOPE, BY ZONING DISTRICT AND RESIDENCE TYPE

However, the maximum permitted percentage of lot coverage on a zoning lot, as determined by Table I or Table II, shall not apply to any development, enlargement or site alteration that receives an authorization pursuant to Section 119-312 (Authorization of certain uses within the Special Hillsides Preservation District) and is located in a Commercial District.