A. Continued use.
1. The owners of land and structures shall not be deprived of the use of any property for the purpose to which it was lawfully devoted at the time of the enactment of this code because of any provision of this code.
2. Nonconforming buildings or structures or land uses may be continued to the same extent and character as that which legally existed on the effective date of this code and any regulations derived from it.
3. Repairs may be made to a nonconforming building or structure or to an existing building or structure housing a nonconforming use.
B. Limitations on enlargement. Any nonconforming but otherwise legal use within a building may be expanded within the same building in which said use is located, provided that:
1. No substantial modifications are made in the building; or
2. The increase or expansion is required to comply with an order to improve issued by a health or safety official.
C. Restoration of damaged buildings. A nonconforming building or structure or a building or structure occupied by a nonconforming use which is damaged or destroyed by fire, flood, or other calamity or act of nature may be restored, and the building or structure or use of such building, structure, or part thereof may be continued or resumed provided that such restoration is started within a period of one year from the date of destruction or damage and is diligently prosecuted to completion. Such restoration shall not increase the floor space devoted to the nonconforming use over that which existed when the building became nonconforming, and such exemption from conforming to this code shall only be to the extent that the building did not conform in the past.
D. Discontinuance or abandonment. A nonconforming building or structure or portion thereof, or a lot or parcel occupied by a nonconforming land use, which is or which hereafter becomes abandoned or which is removed from use for a continuous period of one year or more shall not thereafter be occupied except by a use which conforms to the regulations of the zone in which it is located.
E. Change to a conforming use. Any nonconforming building or structure or land use that has been changed to a conforming building or structure or land use shall not thereafter be changed back to a nonconforming building, structure, or land use.
F. Change to another nonconforming use. A nonconforming use of a building or structure shall not be changed to another nonconforming use. Changes in use shall be permitted only to a conforming use.