Any use, building, structure, or premise[s] existing at the time of enactment of this Ordinance or subsequent changes in the zoning ordinance or map, may be continued, so long as such building, structure, or premise[s] is not enlarged, extended, reconstructed, substituted, or structurally altered, except as required by law. Such prohibition shall not apply to non-conforming uses being converted to a use permitted in the District in which it is located.

Whenever a non-conforming use has been changed to a conforming use, such use shall not thereafter be changed to a non-conforming use.

When authorized by the Board of Adjustment in accordance with the provisions herein, enlargement or completion of a building devoted to a non-conforming use may be made upon the lot occupied by such building where such extension is necessary and incidental to the existing use of such building. The enlargement or modification may not exceed twenty-five percent (25%) of the original area of non-conformity.

When authorized by the Board of Adjustment in accordance with the provisions herein, a non-conforming use may be extended throughout those parts of a building which were manifestly designed or arranged prior to the date on which such use of said building became non-conforming. No structural alterations to these building segments, except those required by law, are permitted.

For the purpose of this section 20.2, a use shall be deemed to have ceased when it has been discontinued for six (6) or more months, whether with the intent to abandon said use or not.

No building or structure that has been designated as non-conforming shall again be put to a non-conforming use where such use has ceased for six (6) or more months.

Land used for agricultural purposes may continue those uses to the fence line, but must conform to the maintenance standards from the fence line to the curb or edge of pavement as stated in Section 6.03.002 of the Navasota Code of Ordinances.