From the ordinance
If no structural alterations are made, a nonconforming use of land or of a building may be changed to another nonconforming use of the same or of a more restricted classification. Removal and replacement of a nonconforming mobile home shall be permitted as a change of use under this section if said replacement is completed within two years of the removal. Whenever a nonconforming use of land or buildings has been changed to a more restricted use or to a conforming use, such use shall not thereafter be changed to a less restricted use.