Structurally unsound, loose, dangerous, crumbling,
missing, broken, rotten or unsafe exterior portions of buildings or
structures, including but not limited to porches, landings, balconies,
stairways, handrails, steps, walls, overhangs, roofs, fences, supporting
members, timbers, abutments, fire escapes, signs, loose, crumbling
or falling bricks, stones, mortar or plaster.