Calcasieu Parish requires a permit before any construction, remodeling or renovation work, but its list names jobs like re-roofing and demolitions, not insulation removal, so the list doesn't settle whether your job needs one. Inside the city, the Lake Charles Permit Center at 337-491-1294 answers questions about building permit requirements. We check with the office that covers your address before we start and apply for a permit if the job needs one.
Louisiana's state licensing board also has a rule about who can take on bigger jobs. Home improvement work worth more than $7,500 and up to $50,000 has to be bid or done by a registered home improvement contractor or a licensed contractor. If removal and new insulation together run past $7,500, that rule covers whoever you hire, so ask before you sign.
Flooding is the other reason this work comes up here. LSU AgCenter guidance says to pull out all wet fibrous insulation after a flood, even when the wallboard looks dry, because the insulation behind it holds water. If your house took water, plan on removal even if the walls look fine. We do the same work in Sulphur and Moss Bluff.