It is the purpose of this article to allow for the continuation of nonconforming structures and uses, while restricting the expansion, reconstruction, repair and/or structural change of a nonconforming structure or use.

Any lawful structure or use existing at the time of the adoption of this chapter, or existing whenever a district in which it is located is changed, may continue although such structure or use does not then conform to the requirements of this chapter.

A nonconforming single-family residential or farm structure shall not be expanded in a manner that increases its nonconformity.

A nonconforming single-family residential or farm structure which is damaged or destroyed, to any extent, may be rebuilt on the original footprint, or less.

Nothing in this section shall prohibit the granting of an area variance to bring a nonconforming structure, including any expansion thereof, into compliance with this chapter.

A nonconforming structure other than a single-family residential or farm structure shall not be expanded in a manner that increases its nonconformity.

A nonconforming structure other than a single-family residential or farm structure which is damaged or destroyed, to the extent of 75% or less of its then existing fair market value, may be rebuilt on the original footprint, or less.

A nonconforming structure other than a single-family residential or farm structure which is damaged or destroyed, to the extent of more than 75% of its then existing fair market value, may not be rebuilt, except in conformity with the requirements of this chapter.

Nothing in this section shall prohibit the granting of an area variance to bring a nonconforming structure, including any expansion thereof, into compliance with this chapter.

A structure associated with a nonconforming single-family residential or farm use shall not be expanded in a manner that increases its nonconformity.

A nonconforming single-family residential or farm structure which is damaged or destroyed, to any extent, may be rebuilt on the original footprint, or less.

A nonconforming use other than a single-family residential or farm use may not be expanded or the intensity of such use increased by the erection of any additional structure or the extension or enlargement of the use or of any existing structure.

Structural changes may be made to a structure associated with a nonconforming use other than a single-family residential or farm use, only under the following circumstances:

A structure associated with a nonconforming use other than a single-family residential or farm use that is damaged or destroyed may be repaired or reconstructed on the original footprint, or less, only under the following circumstances:

Such use is abandoned.

Such use has been discontinued for a period of one year.

Any property owned by the United States or any of its agencies or departments or by the State of New York or by any municipality devoted in whole or in part to such use is sold.