Within the zoning districts established by these regulations or by amendments that may later be adopted, there exist lots, uses and structures which were lawful at the time these regulations were adopted or amended but which would be prohibited, regulated or restricted under the provisions of these regulations or future amendments. Such lots, uses and structures are declared by these regulations to be nonconforming. It is the intent of these regulations to permit these nonconformities to continue until they are removed but not to encourage their survival. It is further the intent of these regulations that nonconformities shall not be enlarged, expanded or extended nor be used as a basis for adding other structures or uses prohibited elsewhere in the same zone.

In any zoning district, a principal building and customary accessory buildings may be erected on a lawful lot existing as of the effective date of adoption or amendment of these regulations. This provision shall apply even though such lot fails to meet the lot area requirements or developable area of the zoning district in which such lot is located, provided that the setbacks and requirements other than those applying to lot area and/or developable area shall conform to the requirements of the district in which such lot is located. Nothing herein shall permit the construction of any buildings on a lot or parcel of land which does not have frontage along a street.

Where a lawful use exists at the effective date of adoption or amendment of these regulations, which use is no longer permitted under these regulations as adopted or amended, such use may be continued so long as it remains otherwise lawful, subject to the following provisions:

Where a lawful structure exists at the effective date of adoption or amendment of these regulations which could not be built under the provisions of these regulations as enacted or amended by reason of restrictions on area, lot coverage, height, yards, its location on the lot or other requirements concerning the structure, such structure may be continued so long as it remains otherwise lawful, subject to the following provisions:

Where a lawful use of a structure and land in combination exists at the effective date of adoption or amendment of these regulations which is no longer permitted under the provisions of these regulations as enacted or amended, such lawful use may be continued so long as it remains otherwise lawful, subject to the following provisions: