(a)        Except in the Borough of Staten Island, the minimum distances set forth in Section 23-711 (Standard minimum distance between buildings) shall not apply between two buildings where each such building faces a front yard required pursuant to Section 26-31. In lieu thereof, such buildings shall be at least 13 feet apart.

(b)        For the purposes of applying the provisions of Section 23-88 (Minimum Distance Between Lot Lines and Building Walls), the required curb of the private road shall be considered to be a street line.