Zoning Regulations Not to Be Retroactive

No zoning regulation adopted by the commission and county commission shall change any use to which land is being made at the time the zoning regulations become applicable in any beat. (Act 82–693, 2nd Sp. Sess., p. 144, § 12; Act 82–771, 2nd Sp. Sess., p. 262, § 12; Act 84–454, p. 1062, § 1.)