Present uses of buildings and premises may be continued even though they do not conform to the restrictions of this chapter. However, structural repairs or alterations of such buildings or premises shall not exceed 50% of their assessed value, unless a building or premises conforming to this chapter results. Any nonconforming use that is abandoned for one year shall be permanently discontinued.

Nonconforming structures damaged or destroyed on or after March 2, 2006, caused by violent wind, vandalism, fire, flood, ice, snow, mold, or infestation may be restored or replaced at the size, location, and use that it had immediately before the damage or destruction occurred, except that a damaged or destroyed structure shall be allowed to be larger if required to comply with applicable state or federal requirements.