Any buildings or structures now legally existing and used in any of said zones and not conforming to the rules, regulations, restrictions and prohibitions herein contained may be continued and used for such purposes as they are now used or for any other purpose classified by the Town Planning Board, with the approval of the Town Board, as not more objectionable than the purpose for which they are now used.

If any area is transferred from one use district to another use district of a more-restricted classification, any nonconforming use then existing within said area may be continued.

Rebuilding or repair. Any building or structure employed in a legal nonconforming use which has been completely or partially destroyed by means other than by intent or design may be rebuilt or repaired within one year thereafter and the nonconforming use thereof continued therein.

Changes prohibited. No changes shall be made in any existing nonconforming use unless such change shall be to a use permitted within the district wherein the same is located, except as provided in § 155-37 herein.

Existing use. All property which at the effective date of this chapter is legally employed in a use which is not permitted hereunder in the use district in which such property is located according to the Zoning Map [1] forming a part hereof may, except as herein otherwise provided, continue as a nonconforming use and shall enjoy the rights and be subject to the limitations regarding nonconforming uses as provided by this chapter.

Termination of permit. Any property for which a permit for specific use has been heretofore granted shall enjoy its right to continue as a nonconforming use only until the date of termination of the permit granted prior to the enactment of this chapter.

Upon approval of the Town Planning Board, a nonconforming use may be changed to a use of the same or higher classification, and, when so changed to a higher classification, such use thereafter shall not be changed to a lower classification.

The Town Planning Board shall only grant such change after a public notice and a public hearing thereon. The Town Planning Board, in granting or denying approval, shall take into consideration the character of the neighborhood, the adaptability of the subject premises to a conforming use, the effect of the proposed use on the neighborhood and the spirit and intent of this chapter. The Town Planning Board may establish such terms and conditions in granting approval as it deems necessary or appropriate to safeguard the health, safety and general welfare of the neighborhood, as well as aesthetic considerations.