No house mover shall permit or allow a building or similar structure to remain upon any street or other public way for a period of more than 12 hours without having first secured the written approval of the City. No house mover shall maintain a building or similar structure, including but not limited to a home/house within the City limits on a trailer, blocks, jacks or similar moving equipment or temporary base for a period of time in excess of seven (7) days. No house mover shall maintain a building or similar structure, including but not limited to a home/house within the City limits on a trailer, blocks, jacks or similar moving equipment or temporary base for a period of time in excess of 48 hours if said structure is not to be placed on a permanent foundation within the City limits.