re: Hiring licensed contractors...how does Louisiana license people?

so you're in the right spot to find out if your contractor is licensed at the louisiana licensing board. You can search by company name or a personal name if that's how they are licensed.
As far as licensing is concerned, a residential contractor's license is needed for projects over $75,000.00 having this license active also insures your contractor is insured as well. There is also a building license, which is louisiana's commercial licensing for projects over $50,000. Mechanical is for HVAC. Plumber's have their own licensing board.
here's the link with some explanation LINK /