The lawful use of land existing on January 9, 1961, although such use does not conform to the provisions hereof, may be continued, but if such nonconforming use is discontinued, any future use of such premises shall be in conformity with the provisions of this Chapter.

The lawful use of a building existing on January 9, 1961, may be continued, although such use does not conform with the provisions hereof and such use may be extended throughout the building; provided, no structural alteration, except those required by law or ordinance, are made therein. If no structural alterations are made, a nonconforming use of a building may be changed to another nonconforming use of the same or more restricted classification.

A nonconforming use, if changed to a conforming use or more restricted nonconforming use, may not thereafter be changed back to a less restricted use than that to which it was changed. If any property is transferred to a more restricted district by a change in the district boundaries or regulations and restriction in any district are made more restrictive or of a higher classification by amendment of this Chapter, the provisions of this Chapter relating to the nonconforming use of buildings or premises existing on January 9, 1961, shall apply to buildings or premises occupied or used at the time of the passage of such amendment.

A trailer court (sometimes referred to as a mobile home court) existing on January 9, 1961, in a zone district other than District "B-T" may continue as a nonconforming use provided, however, that neither the boundaries of said trailer court or mobile home court shall be enlarged nor the number of spaces contained therein be increased. Should all spaces within said trailer court or mobile home court be vacant for a period longer than one (1) year, the nonconforming use shall be deemed discontinued. Only a mobile home or manufactured home built after December 31, 1983, shall after June 21, 2004, be placed in such a nonconforming trailer court or mobile home court.

Repairs and alterations may be made to a nonconforming building; provided, that no structural alterations or extensions shall be made, except those required by law or ordinance, unless the building is changed to a conforming use; provided further, that where the building is nonconforming as to situation on the lot only, and does conform as to use and type of structure, in that the usage made of the building conforms to the requirements of this Chapter and the structure is of the type allowed in the district where such building may be situated, but the building is located nearer to a lot line than the minimum setback required by this Chapter, an extension may be made to such building on a side other than that which is nearer to a lot line than the required setback, so long as such extension, when completed, will not violate this Chapter as to usage or type of structure allowed in the district, or as to setback lines on the sides which were conforming as to setback prior to the extension; provided, further, that the Board, by special permit in the case of evident hardship, may grant an extension of a nonconforming use not exceeding twenty-five percent (25%) of the ground area of the building.