Except as otherwise provided in this article, any nonconforming use or structure legally existing at the effective date October 10, 1995 or which is created whenever a district is changed by amendment hereafter, may be continued, altered, reconstructed, changed, sold, or maintained even though it does not conform to the regulations of the district in which it is located. All nonconforming lots, uses, or structures shall be encouraged to convert to conformity wherever possible and shall be required to convert to conforming status as required by this article.