27.72.020 DISCONTINUANCE OF USE.
(a) Whenever any part of a building, structure or land occupied by a nonconforming use is changed to or replaced by a use conforming to the provisions of this title, such premises shall not thereafter be used or occupied by a nonconforming use, even though the building may have been originally designed and constructed for the prior nonconforming use.
(b) Whenever a nonconforming use of a building or structure, or part thereof, has been discontinued for a period of six consecutive months, such use shall not after being discontinued or abandoned be reestablished, and the use of the premises thereafter shall be in conformity with the regulations of the district.
(c) Where no enclosed building is involved, discontinuance of a nonconforming use for a period of six months constitutes abandonment, and the use of such premises shall thereafter conform with the regulations of the district and shall not thereafter be used in a nonconforming manner.
(d) A nonconforming use not authorized by the provisions of this code and amendments thereto in effect at the time this title becomes effective, shall be discontinued and not reestablished unless, pursuant to the provisions of this title, the use is conforming to the district in which it is then located.