No property owner shall cause or permit, not shall any person make any service connection, install, modify, or change any gas piping or any gas appliance or fixture within the municipality or and its gas service territory until the person proposing to do the work shall have first obtained a permit therefore from the municipality. (Ord. #314, Sec. 6, 02/10/59, modified). (Ord. #1293, 06/28/2023).