Delaware Code Title 9. Counties § 6901. Definitions

(1) “Nonconforming structure” means a structure or part of a structure manifestly not designed to comply with the applicable use provisions in a zoning regulation or amendment heretofore or hereafter enacted, where such structure lawfully existed prior to the enactment of such ordinance or code or amendment by reason of its location.  Such nonconforming structures include nonconforming signs.

(2) “Nonconforming use” means a use, whether of land or of a structure, which does not comply with the applicable use provisions in a zoning regulation or amendment heretofore or hereafter enacted, where such use was lawfully in existence prior to the enactment of such ordinance or code or amendment, or prior to the application of such ordinance or code or amendment by reason of its location.

(3) “Structure” means any man-made object having an ascertainable stationary location on or in land or water whether or not affixed to the land.  The word “structure” includes the word “building.”