Where a Louisiana master plumber license transfers

Louisiana licenses Master Plumbers statewide through the State Plumbing Board of Louisiana (SPBLA). A Master Plumber may perform plumbing work and employ registered apprentices and licensed journeymen; each plumbing company must designate one Responsible Active Master Plumber who keeps the company's insurance on file with the Board under La. R.S. 37:1361 et seq. To sit the master exam an applicant must hold a current Journeyman Plumber license (or a Louisiana professional engineer license) and file a notarized application with $110 ($100 exam + $10 processing). The exam is a three-part open-book written test scored at 70% per part: 80 questions on the 2021 IPC/IRC, a part on Title 51 Public Health-Sanitary Code Part XIII (sewage disposal), and 40 questions on the NASCLA Louisiana Master Plumbers and Master Natural Gasfitters Guide to Business, Law, and Project Management. The initial license is $190 active (associated with a plumbing company that has insurance on file) or $40 inactive; licenses expire December 31 and active masters complete 5 hours of CPE a year (3.5 hours for an inactive master working as a journeyman). The Board states that it 'does not reciprocate Master licenses'; out-of-state masters enter through the journeyman license. Act 908 of the 2026 session transfers plumbing licensing to the Louisiana State Licensing Board for Contractors on January 1, 2027; existing licenses carry over, and the Act requires 1,000 hours of verified work as a licensed journeyman before the master license.