Front facade must be primarily brick of a historically appropriate color and size to be consistent with other homes on the block. The remainder of the front facade must be constructed of stone, cast stone, decorative metal, slate or simulated slate shingles, tile, terra cotta or other similar and appropriate materials in an appropriate manner. The use of polyurethane, vinyl, asphalt or Aluminum siding, concrete block, perma-stone, and EIFS or similar cementations concrete panels shall be prohibited.