I live in Missouri and we only have to have permits for building an addition if we live within the city limits if we live outside the city limits we do what we want except for putting in a new septic system unless you have one that is grandfathered in..in which case the EPA has no control and neither do the plumbers that want to make you buy what you don’t need.
Just check to see the ordinances for city and county.
The link below will give you the Names, Phone numbers, which type of building ie; structural or plumbing etc and the email address.(click on the name in second paragraph listing in blue)
Little Rock, Arkansas Building Codeshttp://www.reedconstructiondata.com/buil…