Louisiana Plumbing
  • Pre-Approval from the state is required.
  • Individuals must hold a Journeyman Plumber license before eligible to sit for the Master Plumber exam.
  • To qualify for the Journeyman Plumber classification, the applicant must have at least five years or 8,000 hours of full-time experience in the plumbing trade. The application is required to be signed by three (3) currently licensed Journeyman or Master Plumbers who can attest to the experience.
  • To qualify for the Master Pumber classification, the applicant must hold a current Journeyman Plumber License or a current restricted Master Plumber License or a LA Professional Engineers License with 5 years experience in the plumbing trade.
  • Master Plumbers are required to carry general liability insurance, vehicle liability insurance on service vehicles and Worker's Compensation insurance if they have employees. Licenses cannot be issued without proof of insurance.
Scope of Work:

A Master Plumber is unrestricted as to the size and scope of the job except for Medical Gas and Water Supply Protection Specialist. Master Plumbers can bid on jobs, advertise and pull all necessary permits.

A Journeyman Plumber is permitted to do repair work only.


Applications and information regarding eligibility requirements, fees and examination dates are provided by:

State Plumbing Board of Louisianabr />12497 Airline Hwy br />Baton Rouge, LA 70817 br />(225) 756-3434 br /> 

Examinations are typically administered 4 times per year, in February, May, August and November.


Louisiana has no reciprocity with any other state for Plumbing classifications.


Journeyman Plumbers are required to complete 4 hours of Louisiana State Approved Continuing Education prior to renewal.

Master Plumbers are required to complete 6 hours of Louisiana State Approved Continuing Education prior to renewal.

  • The fee for the Journeyman Plumber exam is $125./
  • The exam has 80 questions, is multiple-choice, and a time limit of 180 minutes./
  • A 70% is required to pass.

    Topics on the exam include administrative licensing, permits and inspections, general knowledge and regulations, water heaters, fixtures, drainages systems, cleanouts, vents and venting, traps and interceptors, materials and hangers, Isometric Analysis, piping, valves and more.

  • The fee for the Master Plumber exam is $100./
  • The exam has 3 parts, is multiple-choice and timed, and requires a 70% to pass.

    Part 1 consists of 80 questions pertaining to General Plumbing />Part 2 consists of 25 questions pertaining to Practical Plumbing />Part 3 consists of 40 questions pertaining to Business and Law /> 

    Topics on the exam include drainage systems and sewers, water supply and backflow prevention, general code, materials and installation practices, excavation, fixtures and trim, inspection and testing, safety, terminology, plans and specifications, Isometric and plan drawings, layout project management, risk and financial management, planning, organization and licensing, labor laws, tax laws and more.


The references listed in the Right-Hand column are permitted to be taken into the examination. These references may be tabbed (with permanent index tabs) and highlight chapters ONLY. They are available for purchase from our online contractor’s bookstore or by calling our office at (800) 992-1910.

There is also a Downloadable Document allowed into the examinations. *Title 51 – Public Health – Sanitary Code, Part XIII, Sewage Disposal (Formerly named Chapter 13) It can be downloaded from the Internet free of charge. To view and/or print the document, simply select the button following the title. target="_blank" href=Click Here To Download.


American Contractors currently does not offer a seminar to prepare for the Louisiana Master Plumber exam.

Please call us for more information at (800) 992-1910.


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*ONLINE Louisiana Residential Contractor CE Construction Spanish for Contractors 2 hr
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Schedule Info:
Instruction for this course, if available, is given on a private and/or home-study basis. Please contact us for more information.

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Reference Materials
The following books are recommended for this exam:
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