Building materials and waste, including but not limited to, such items as lumber, wood, lath, pallets, plaster, rod iron or other metal, concrete, brick and tile, piles of rock, sand, dirt or gravel when not used for landscaping purposes, doors, windows and scrap or salvage building materials, boxes, barrels or other containers, when such items are stored, collected, piled or kept and stored outside a building. Building materials that are temporarily stored for work on the premises authorized by a valid building permit obtained for the premises are exempt, provided lumber is neatly stacked on a platform off the ground, and that such building materials shall not remain on the premises for more than 30 days after the expiration of the building permit. (Ord. 712 (part), 2012)