The lawful use of any building or land existing at the time of the enactment of this chapter may be continued although such use does not conform with the provisions of this chapter.
Whenever a building or land used for or occupied by a nonconforming use has been discontinued for a period of one year for residential dwellings or three years for other uses, such use shall not thereafter be used or occupied as a nonconforming use.
A nonconforming building may not be reconstructed or structurally altered during its life to an extent exceeding an aggregate cost of 50% of the appraised value of the building, unless the building is changed to a conforming use.
A nonconforming use shall not be extended, but a lawful use may be extended into any portion of a nonconforming building.
Lots of record at the time of adoption of this chapter whose size or depths are less then the specified minimum requirements set forth herein shall be deemed to meet the minimum size regulations of the chapter. No new lot shall be created which does not meet the minimum lot size regulations of this chapter.