Where, at the time of passage of this chapter, lawful use of land exists which would not be permitted by the regulations imposed by this chapter, the use may be continued so long as it remains otherwise lawful, provided that:
A.
No such nonconforming use shall be enlarged or increased nor extended to occupy a greater area of land than was occupied at the effective date of adoption or amendment of this chapter, with the exception of a single-family structure. Said single-family structure may be expanded up to 20% of its gross habitable floor space, provided the addition conforms with all other applicable regulations and ordinances and no additional units are created.
B.
No such nonconforming use shall be moved, in whole or in part, to any portion of the lot or parcel other than that occupied by such use at the effective date of adoption or amendment of this chapter.
C.
If any such nonconforming use of land ceases for any reason for a period of more than 12 consecutive months or for 24 months during any three-year period, any subsequent use of such land shall conform to the regulations specified by this chapter for the district in which such land is located.
D.
No additional structure not conforming to the requirements of this chapter shall be erected in connection with such nonconforming use of land with the exception of accessory structures associated with a single-family house, provided they comply with all other applicable City ordinances and regulations.