Any lawful building, structure, structure and land in combination or use of such premises existing at the time of enactment of this chapter or any subsequent amendment thereof applying to such building, structure, structure and land in combination or use of such premises may be continued although such building, structure, structure and land in combination or use does not conform to the provisions hereof, except as follows: Any sign which becomes nonconforming upon the date of enactment of this chapter shall be removed or altered so as to conform within three years after such date of enactment.
Any structure or structures and land in combination in or on which a nonconforming use is superseded by a permitted use shall not thereafter be used for or occupied by a nonconforming use.
A building or structure of nonconforming use may be repaired or restored to a safe condition.
Any building or structure on which construction was begun prior to the effective date of this chapter or any subsequent amendment thereof applying thereto may be completed and used in accordance with the plans and specifications for such building or structure.
A. 
Any lot held in single or separate ownership prior to the adoption of this chapter and whose area and/or width and/or depth are less than the specified minimum lot requirements in this chapter for that district may be considered as complying with such minimum lot requirements and no variance shall be required, provided that:
(1) 
Such lot does not adjoin any other lot or lots held by the same owners whose aggregate area is equal to or greater than the minimum lot area required for that district.
(2) 
Yard requirements and other requirements except lot area and/or width shall conform to the requirements for the district in which said lot is located.
(3) 
All other building requirements for that district are complied with.
B. 
In any district where residences are permitted, such undersized nonconforming lots may be used for not more than one single-family dwelling.
C. 
A lot of nonconforming size may be subdivided if each and every subdivision of such lot is purchased by the owner or owners of the adjoining properties to increase the size of said owner's or owners' property or properties.
No lot shall be reduced in area so that it creates a nonconforming building or use in violation of any regulations contained in this chapter.