20. MASONRY REQUIREMENTS

Single-family dwellings located on interior lots shall have a minimum of twenty five percent (25%) of their exterior walls of the first floor of stone or msasonry construction. Single-family dwellings located on conrner lots shall have a minimum of fifty percent (50%) of the ground floor exterior walls facing streets of stone or masonry construction. In computing these percentages, (1) all gables shall be excluded from the total area of exterior walls, (2) all windows and door openings shall be excluded from the total area of the exterior walls; and (3) stone and masonry used on fireplaces, chimneys and walls of an attached garage may be included in the computation as stone or masonry used. A substitute for the masonry requirements of certain select cedar, redwood, or other similar materials may be submitted ot the Architectural Control Committee for approval.