No license issued under this chapter shall be assignable, and a licensee shall permit the sale of such alcoholic liquor as he is licensed to sell only on the premises described in the application and license. Such location may be changed only upon written permit to make such change issued by the mayor and no change of location shall be permitted unless the proposed new location is a proper one for the retail sale of alcoholic liquor under the laws of the state and the provisions of this chapter. (Ord. 407, 6-15-1987)