If any lands upon which no building or structure of any kind is located are used for a purpose which is not in compliance with the regulations of the district where such lands are located, such use may continue for a period of three years from the date of the adoption of the ordinance codified in this chapter. After the expiration of the aforementioned three-year period, such lands shall be used only in conformance with the regulations of the district in which they are located. (Ord. 3-83 § 6.2, 1983)