It is unlawful for any person to erect, construct, enlarge, alter, repair, move, improve, remove, convert or demolish, equip, use, occupy, or maintain any building or land or cause or permit the same to be done in violation of this code. When any building or parcel of land regulated by this code is being used contrary to this code, the Code Official may order such use discontinued and the structure, parcel of land, or portion thereof, vacated by notice served on any person causing such use to be continued. Such person shall discontinue the use within the time prescribed by the Code Official after receipt of such notice to make the structure, parcel of land, or portions thereof, comply with the requirements of this code.