The lawful use of a lot of record, or of several contiguous lots jointly constituting the site of such use, and not containing any enclosed buildings, which do not conform to the use provisions of this Chapter shall be discontinued within two (2) years from the effective date of this Chapter. If any non-conforming use is discontinued for a period of one (1) year or more, any future use of said premises shall be in conformity with the provisions of this Chapter. After the effective date of this Chapter, lot or lots or ground area used for parking shall be paved according to requirements of this Chapter.

The lawful use of a building existing at the time of the passage of this Chapter may be continued, although such use does not conform to the provisions thereof, and such use may be extended throughout the building provided no structural alterations, except those required by law or ordinance, are made therein. If no structural alterations are made, a non-conforming use of a building may be changed to another non-conforming use of the same or more restricted classification. Whenever the non-conforming use of a building 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. In the event that the non-conforming use of a building is discontinued for a period of one (1) year, the use of same shall thereafter conform to the regulations of the district in which it is located.

Notwithstanding any other provision of this Chapter a non-conforming building in use as a single-family residence within a residential zoning district and/or residential building in use as a single-family residence located on a legal non-conforming lot may be enlarged provided the enlargement conforms to all setbacks, height and other applicable regulations of this Chapter.

The foregoing provisions shall also apply to non-conforming uses in districts hereafter changed.

Nothing in this Chapter shall be taken to prevent the restoration of a building destroyed to the extent of not more than fifty percent (50%) of its reasonable value, by fire, explosion or other casualty or act of God or the public enemy, nor the continued occupancy or use of such building or part thereof which existed at the time of such partial destruction.