The lawful use of a building or premises existing at the time of passage of the ordinance codified in this title may be continued although such use does not conform to all the provisions of this title, except as hereinafter provided. [Ord. 6, 1990 § 6-1; Code 1999 § 10-22.]

A nonconforming use may be extended throughout a building provided no structural alterations are made therein, except those required by law. [Ord. 6, 1990 § 6-2; Code 1999 § 10-23.]

A nonconforming use may be changed to another nonconforming use of the same or greater restrictions provided no structural changes are made in the building. Whenever a nonconforming use has been changed to a conforming use or to a use permitted in a district of greater restrictions, it shall not thereafter be changed to a nonconforming use or a less restricted one. [Ord. 6, 1990 § 6-3; Code 1999 § 10-24.]

The board of zoning appeals may authorize, by written permit in a residential district for a period of not more than one year from the date of such permit, a temporary building for commercial or industrial use incidental to the residential construction and development of said district. [Ord. 6, 1990 § 6-5; Code 1999 § 10-26.]

Nothing herein contained shall require any change in the plans, construction or designated use of a building for which a building permit has been heretofore issued and the construction of which has been diligently prosecuted within 90 days of the date of such permit and which entire building shall be completed according to such plans, as filed within three years from the date of passage of the ordinance codified in this title. [Ord. 6, 1990 § 6-6; Code 1999 § 10-27.]

In the event that a nonconforming use of any building or premises is discontinued for a period of one year, the use of the same shall thereafter conform to the uses permitted in the district in which it is located. [Ord. 6, 1990 § 6-7; Code 1999 § 10-28.]

The lawful use of land for junk yards and trash storage which does not conform to the provisions of this title shall be discontinued within two years of written notification, and the use of land for junk yards and trash storage, which may become a nonconforming use by reason of an amendment to this title, shall be discontinued within two years of written notification. It shall be a requirement that two-thirds of the plan commission membership be in attendance at any meeting when action on the above is taken. [Ord. 6, 1990 § 6-8; Code 1999 § 10-29.]

These provisions apply in the same manner to a use which may become a nonconforming use due to a later amendment to this title. [Ord. 6, 1990 § 6-9; Code 1999 § 10-30.]