Abandonment. A cessation of a lawful nonconforming use or activity on the part of the occupant for a period of one (1) year shall be deemed prima facie evidence of abandonment of such use, and shall preclude return of said nonconforming use absent presentation to the Planning Board/Zoning Board of Adjustment of satisfactory proof of a lack of intent to abandon.

Conversion to Permitted Use. Any nonconforming structure or use that has been changed to a conforming use shall not be changed back again to a nonconforming use.

Restoration. Any nonconforming structure or use that has been partially destroyed by fire, explosion, flood, windstorm or other act of God may be rebuilt, restored or repaired, provided that such rebuilding, restoration, or repair shall not alter or extend the nonconforming use that existed prior to the partial destruction. If the building or use is completely destroyed, it shall not be rebuilt, restored or repaired unless in conformity to the building and use requirements of this chapter.

Repairs and Alterations. Such repairs and maintenance work as required to keep it in sound condition may be made to a nonconforming structure, provided that no structural alterations shall be made except such as are required by law.

Accessory Structures. Even though an existing principal structure may violate the minimum yard requirements set forth in this section but not the building coverage requirements, there may be constructed without recourse to the Planning Board/Zoning Board of Adjustment, an accessory structure or an addition to a structure conforming to the building lines of the principal structure, provided said accessory structure or addition in itself does not violate any other part of this chapter.