Journeyman vs Master Plumber: The Difference by State (2026)

If you are building a career in plumbing, you will hear three titles over and over: apprentice, journeyman, and master plumber. They are not interchangeable. Each represents a different level of training, a different set of legal rights on a job site, and usually a different paycheck.

And the rules change from state to state. Some states run the full apprentice to journeyman to master ladder. Others license the plumbing contracting business at the state level and never issue a statewide journeyman or master title. A few do not issue a statewide plumbing license at all and leave it to individual cities.

At a glance

• Journeyman: roughly four to five years of apprenticeship (about 6,800 to 8,000 hours)
• Journeyman to master: New Jersey and Alabama require one year; Texas and Maryland require two; Wisconsin requires at least three years at 1,000 hours a year
• Exams: every state in the table that publishes a passing score sets it at 70 percent
• Permits: as a general rule, master plumbers pull the permits and hold legal responsibility for the work
• Not universal: a few states do not issue a statewide plumbing license at all and leave it to individual cities

This guide explains the plumber career ladder clearly: what each level means, how long each takes, who can pull permits, and how ten of the biggest states actually structure their licenses, each row sourced at the state board. It closes with how the title structure connects to running a licensed plumbing contracting business.

The plumber career ladder

Most plumbers move through three stages, where a state uses this structure at all.

Apprentice. The entry point. An apprentice learns the trade through on the job training under the supervision of higher level plumbers, usually combined with classroom instruction. Apprentices cannot work unsupervised on most tasks; they are building hours and knowledge toward the journeyman level.

Journeyman. A journeyman has completed an apprenticeship and can perform plumbing work independently, but typically still under the general authority of a master plumber who holds the permits. Journeymen install, repair, and maintain plumbing systems on their own, and on larger or new construction projects a journeyman typically works under the authority of a master plumber or a licensed contractor.

Master plumber. The top of the ladder, where a state issues one. A master has additional experience, training, and licensure beyond the journeyman level. Masters can pull permits, design and oversee complex plumbing systems, supervise journeymen and apprentices, and commonly own or run plumbing businesses.

Journeyman vs master: the core differences

Here is what actually separates the two levels, in the states that use these titles.

Training and hours

Becoming a journeyman generally starts with an apprenticeship of about four to five years, during which you accumulate roughly 6,800 to 8,000 hours of supervised work experience plus classroom instruction. Texas and Washington both set the journeyman bar at 8,000 hours; Minnesota requires four years and about 7,000 hours, and a registered unlicensed plumber must show at least 2,000 hours in water distribution, 2,000 in drain, waste and vent systems, and 1,000 in fixtures; Maryland requires 7,500 hours over four years plus 32 hours of backflow prevention training; Massachusetts requires 6,800 hours of practical work plus 550 hours of theory.

Moving from journeyman to master is where states diverge more than the "one to four years" rule of thumb suggests. New Jersey and Alabama both require only one year as a licensed journeyman. Massachusetts and Minnesota also require one year (a minimum of 1,700 hours in Massachusetts). Texas and Maryland require two years. Wisconsin requires at least 1,000 hours a year as a licensed journeyman for a minimum of three years.

Georgia counts differently. Under O.C.G.A. 43-14-13, a Master Plumber Class I needs four years of total plumbing experience, three of them as a licensed journeyman, and a Class II needs five years, four of them as a licensed journeyman and at least two in unrestricted scope work. A journeyman licensed before March 1, 2025 needs only one licensed year for Class I or two for Class II. Under O.C.G.A. 43-14-2, Class I covers single family homes, townhomes and multifamily buildings up to three stories plus commercial buildings up to 20,000 square feet in total area, and Class II has no restrictions. Georgia asks for only one year of experience before the journeyman exam. Counting the apprenticeship, Wisconsin sets the longest path in the table: a five year apprenticeship, then at least three years as a licensed journeyman.

Exams

Both levels normally require passing an exam, but they are different tests. The journeyman exam covers the practical knowledge to perform plumbing work safely and to code. The master exam is more advanced, covering deeper code knowledge, system design, calculations, and often business and supervisory responsibilities. Where the states in the table below publish a passing score (Massachusetts, Minnesota, Maryland, Georgia, and Washington), it is 70 percent.

Permit authority

This is one of the most important practical differences. As a general rule, master plumbers pull the permits and hold legal responsibility for the work. A journeyman can perform a wide range of plumbing work independently, but typically does so under a master's (or licensed contractor's) permit authority rather than pulling permits in their own name. Texas makes the same link at the business level: a master plumber who runs a plumbing company does so as its Responsible Master Plumber, with liability insurance on file with the Texas State Board of Plumbing Examiners.

Running a business

A master plumber can run their own plumbing business, take legal responsibility for code compliance, and stand behind a contracting company. That is the level most states tie to business licensure, though as the table below shows, several states route that responsibility through a contractor license instead of a personal master title.

Pay

Because masters carry more responsibility, advanced knowledge, and permit authority, they typically earn more than journeymen, who in turn earn more than apprentices. The exact gap depends on your market, specialization, and whether you run your own business.

Continuing education

Most states require continuing education to keep a plumbing license active. Massachusetts requires 12 hours every two years for both journeyman and master; Wisconsin requires 24 hours before each journeyman or master renewal; Minnesota requires 16 hours every renewal cycle, at least 8 of them on the state plumbing code; New Jersey requires 5 hours for each two year master plumber license renewal. Requirements vary by state, so check your state board.

State by state: how ten of the biggest states actually license plumbers

Here is where many plumbers get tripped up. The apprentice, journeyman, master ladder is common, but it is not universal, and states actually split into three different patterns:

1. Full ladder states issue statewide journeyman and master plumber licenses through a single board.
2. Contractor level states license the plumbing business statewide, either through a contractor credential issued directly to the qualifying individual (North Carolina's Class I and Class II) or through a plumbing contractor license backed by certified individual plumbers (Washington), with no statewide master title.
3. No statewide license states do not issue any plumbing license at the state level at all. Every city and county sets its own rules.

The table below covers ten of the biggest states for this search, one row per state, sourced at each state's own board.

Notes

• Texas: at least 8,000 hours of plumbing trade experience while registered as an apprentice or licensed as a tradesman, plus a 48 hour TSBPE approved training course, then the journeyman exam.
• Massachusetts: Board of State Examiners of Plumbers and Gas Fitters. 550 clock hours of plumbing and gas fitting theory plus 6,800 clock hours of practical work as a licensed apprentice under the direct supervision of a licensed Massachusetts master plumber, then the journeyman exam; 70 percent on each portion to pass.
• Minnesota: Dept. of Labor and Industry. A completed registered plumbing apprenticeship, or at least 4 years (about 7,000 hours) of recorded experience as a registered unlicensed plumber, including at least 2,000 hours in water distribution, 2,000 in drain, waste and vent systems, and 1,000 in fixtures, then the journeyworker exam; 70 percent to pass.
• Wisconsin: completion of a plumbing apprenticeship, then the journeyman exam. An out of state journeyman needs a completed apprenticeship plus at least 5 years under a journeyman license.
• New Jersey: State Board of Examiners of Master Plumbers. 4 years in a U.S. Department of Labor approved apprenticeship program (or a bachelor's degree in mechanical, plumbing or sanitary engineering), then licensure as a Journeyman Plumber. The application fee is $75, or $50 with prior apprentice registration.
• Maryland: Maryland Board of Plumbing. 4 years and 7,500 hours of training under a licensed master plumber, plus 32 hours of backflow prevention training, then the journeyman exam; 70 percent to pass.
• North Carolina: State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors. No journeyman or master title. The individual tier is the Plumbing Technician license: Class I after 3,000 hours of field experience, Class II after 2,500 hours, and a technician works for a licensed contractor.
• Alabama: Plumbers and Gas Fitters Examining Board. 2 years of documented work experience, or a board approved apprentice program, then the journeyman exam.
• Georgia: licensed by the Secretary of State through the Division of Master and Journeyman Plumbers. Minimum 1 year of plumbing experience and three references from licensed plumbers, then the exam, 70 to pass.
• Washington: individual certification, no master tier. 4 years (8,000 hours) as a plumber trainee under a certified journey level plumber, at least 4,000 of those hours in commercial or industrial work, then the exam, 70 percent to pass. Journey Level Plumber (PL01) is the highest individual credential Washington issues.

Notes

• Texas: journeyman license held at least 2 years, or 1 year plus completion of a U.S. Department of Labor approved apprenticeship program, then the master exam. A master plumber who operates a plumbing company does so as its Responsible Master Plumber and must file a certificate of liability insurance with TSBPE (Tex. Occ. Code 1301.3576).
• Massachusetts: 1 year (minimum 1,700 hours) as a licensed Massachusetts journeyman plus the 110 hour Tier Five of the board's plumber education program, then the master exam. Apprentices train under the direct supervision of a licensed master plumber, the top individual credential under 248 CMR.
• Minnesota: 1 year as a licensed journeyworker, or 5 years of business experience under a restricted master license, then the master exam. Each plumbing contractor must designate a responsible licensed plumber, and for a standard plumbing contractor that person must be a master plumber (Minn. Stat. 326B.46).
• Wisconsin: at least 1,000 hours of experience per year as a licensed Wisconsin journeyman plumber for at least 3 years, or an accredited engineering degree related to plumbing, then the master exam. The master plumber is the credential responsible for the installation; a journeyman works under the general supervision of a master plumber, master plumber restricted, or utility contractor license.
• New Jersey: 1 year (1,200 hours) of practical hands on experience as a licensed New Jersey journeyman, then the master plumber exam, a $100 fee, minimum age 21. A licensed master plumber must hold at least 10 percent of the ownership of any plumbing contracting business as its bona fide representative (N.J.S.A. 45:14C-2).
• Maryland: 2 years as a licensed journeyman plus 3,750 additional hours under a licensed master, then the master exam, 70 percent to pass. Training hours run under the direction and control of a licensed master plumber, who must carry $300,000 in general liability and $100,000 in property damage insurance.
• North Carolina: Plumbing Contractor Class I (all structures) or Class II (single family detached dwellings), issued to the qualifying individual after 2 years (4,000 hours) of experience, up to half of it through approved training, plus the technical exam and the business and law exam. The Class I or Class II contractor licensee is the individual the business contracts under (N.C. Gen. Stat. 87-21).
• Alabama: at least one active employee of the business must be a certified master plumber, actively connected with the business and registered with the board as its principal.
• Washington: specialty certificates (residential, residential service, pump and irrigation, domestic well, backflow) sit alongside journey level, not above it. Since July 1, 2021 a business needs a plumbing contractor license from L&I, and to get it the business must employ a full time certified journey level plumber (or a specialty plumber for that specialty's scope) (RCW 18.106.400).

A few patterns worth naming out loud. North Carolina and Washington both put the state's licensing weight on the business rather than an individual title, but they do it differently: North Carolina issues its Class I and Class II contractor license directly to the qualifying person, while Washington certifies individual plumbers up to journey level and then requires a separate plumbing contractor license that must employ one of them full time. And the time to master varies widely even inside the full ladder group: New Jersey and Alabama ask for one year as a journeyman, while Wisconsin asks for three years after a five year apprenticeship.

See our state guides for the full requirements and fees behind each of these: Texas, Massachusetts, Washington, Michigan, Illinois, New York, Pennsylvania, New Jersey, Alabama, and Florida.

How to move from journeyman to master

The path looks similar across every full ladder state, even though the exact numbers differ:

1. Hold the journeyman license for the required time. New Jersey and Alabama require one year; Texas and Maryland require two; Wisconsin requires at least three years at 1,000 hours a year; Georgia requires four years of total plumbing experience with three as a licensed journeyman for Master Plumber Class I, and five years with four as a licensed journeyman for Class II.
2. Log the additional hours. Track supervised experience the same way you tracked apprentice hours, since boards ask for documented, verifiable time signed by a licensed master, not an estimate.
3. Complete any required pre exam education. Massachusetts requires the 110 hour Tier Five of its plumber education program before the master exam; several states fold this into continuing education instead.
4. Pass the master exam. Expect a demanding code exam; every state in the table that publishes a passing score sets it at 70 percent. Check your board's candidate bulletin for the exact format.
5. Apply for the license and, if you plan to run or qualify a business, decide how you will use it. A master license on its own lets you supervise and pull permits as an individual. Standing behind a company as its qualifying license holder is a separate decision, covered below.

How the ladder connects to running a business

No matter what your state calls the top tier, the same principle applies: a company that contracts for plumbing work needs a properly licensed, legally responsible person standing behind it. For the broader requirements behind any state's contractor license, see our contractor license guide.

In full ladder states, that is usually a master plumber. In contractor level states, it is the holder of the plumbing contractor, Class I, or Class II license. In local licensing states like New York and Pennsylvania, it is the city licensed master plumber.

Most states in the table above tie a contracting business to one specific licensed, responsible individual, whatever the state calls the top tier. Texas calls this the Responsible Master Plumber. Minnesota requires every plumbing contractor to designate a responsible master plumber. New Jersey requires the master to hold at least 10 percent ownership of the plumbing contracting business. Alabama requires a certified master plumber registered with the board as the principal of the business.

North Carolina, a contractor level state, issues its Class I or Class II license directly to the qualifying individual. And Washington, which has no master tier at all, still requires a licensed plumbing contractor to employ a full time certified journey level plumber, so the qualifier role exists even without the word master attached to it.

That licensed, responsible person is what regulators are really asking for when they require a business to have a "qualifier." A qualifying agent is the licensed individual who holds the required credential and serves as the documented, responsible party for the company's plumbing contracting. To understand the role, start with what a qualifying agent is, then read our deeper guide on the plumbing contractor qualifying agent.

This matters in two common situations:

You're an experienced master or licensed plumber. Your license has real value beyond your own jobs. Serving as a qualifying agent is a legitimate, full time W-2 role with genuine oversight responsibility, a way to put years of earned credentials to work, not a percentage arrangement or a 1099 side deal. Learn more about becoming a qualifying agent.

You're building a company but don't yet hold the top tier license. Maybe you have the skills and the field hours but not the master credential, or you are expanding into a new state where you are not yet licensed. A qualifying agent can hold the required license so your business can legally operate and bid while you build your own qualifications.

If your company needs a qualifier now, see Hire a Qualifying Agent. See also how to get a contractor license without experience.

Frequently asked questions

How long does it take to become a master plumber? Plan on roughly four to five years of apprenticeship (about 6,800 to 8,000 hours) to reach journeyman, then more time working as a journeyman before you can sit for the master exam. That second stretch varies more than people expect: New Jersey and Alabama ask for just one year as a journeyman, Texas and Maryland ask for two, Wisconsin asks for at least three years at 1,000 hours a year after a five year apprenticeship, the longest path of the ten states in this guide, and Georgia asks for four years of total experience with three as a licensed journeyman for Class I, or five years with four as a licensed journeyman for Class II. Always check your specific state's board.

Can a journeyman plumber pull permits? Usually not in their own name. As a general rule, master plumbers (or the licensed contractor) pull permits and hold responsibility for the work. Texas makes this explicit at the business level: a master plumber who runs a plumbing company does so as its Responsible Master Plumber, registered with the state board. Journeymen perform plumbing work independently but typically under a master's or contractor's permit authority.

Is a master plumber the same as a plumbing contractor? Not exactly. A master plumber is a high level individual credential. A plumbing contractor license is the business credential that lets a company contract for plumbing work.

In many full ladder states you need a master (or equivalent) to qualify a company for a contractor license. In contractor level states such as North Carolina, the contractor license itself, issued directly to the qualifying individual, is the top credential, and there is no separate master title at all.

Do all states have journeyman and master plumber licenses? No. Texas, Massachusetts, Minnesota, Wisconsin, New Jersey, Maryland, Alabama, and Georgia all run a full statewide journeyman to master ladder, though the years and hours differ sharply between them. Michigan also runs a statewide apprentice, journeyman, and master ladder.

North Carolina licenses at the contractor level instead, issuing Class I and Class II contractor licenses directly to the qualifying individual, with a Plumbing Technician license below it and no journeyman or master title. Washington certifies individual plumbers up to journey level but issues no master plumber license at all.

Florida licenses at the contractor level through the CILB and DBPR, California uses the C-36 contractor license through the CSLB with no journeyman or master structure, Illinois issues a single state Plumber license through the Illinois Department of Public Health (with a Chicago home rule carve out), and New York and Pennsylvania issue no statewide plumbing license, licensing city by city instead: New York City's Licensed Master Plumber through the Department of Buildings, and Philadelphia and Pittsburgh and Allegheny County in Pennsylvania, with no reciprocity between jurisdictions. Always check your specific state's structure.

What are the levels of plumbers? Where a state runs the full ladder, the levels are apprentice, journeyman, and master, in that order, each with its own hour requirements and exam. Alongside that individual ladder sits a separate, business level layer, the plumbing contractor license (or its state specific equivalent, such as North Carolina's Class I and Class II contractor licenses or Washington's plumbing contractor license), which is what allows a company, not just an individual, to contract for plumbing work.

I have my master/contractor license. How do I use it to earn more? Beyond your own jobs, you can serve as a qualifying agent for a contracting company in a real, full time W-2 role. Learn how to become a qualifying agent, or if you need a qualifier for your own company, see how to hire one or call 615-219-2110. Compensation and arrangements depend on your trade, license level, and state, so they are scoped individually rather than posted publicly.

A state without a separate journeyman license issued to individuals in the trade ladder sense: New Jersey does issue a Journeyman Plumber license, but the path to it is compressed compared to most states: four years in an approved apprenticeship, then just one year (1,200 hours) as a licensed journeyman before you are eligible for the master exam, which requires a minimum age of 21. See how to get a plumbing license in New Jersey.

Sources

• Texas State Board of Plumbing Examiners, Journeyman Plumber license requirements, retrieved 2026-09-23: tsbpe.texas.gov
• Texas State Board of Plumbing Examiners, Master Plumber license requirements, retrieved 2026-09-23: tsbpe.texas.gov; Tex. Occ. Code 1301.3576 (Responsible Master Plumber insurance)
• Massachusetts Board of State Examiners of Plumbers and Gas Fitters, 248 CMR 11.02 (education and experience), 11.03 (examinations, 70 percent) and 11.04 (continuing education), retrieved 2026-09-23: law.cornell.edu; mass.gov
• Minnesota Department of Labor and Industry, Plumbing license basics and Plumbing license experience requirements, retrieved 2026-09-23: dli.mn.gov, dli.mn.gov; Minnesota Statutes section 326B.46; Minn. R. 4716
• Wisconsin Department of Safety and Professional Services, Journeyman Plumber Application Information (form #3126) and Master Plumber License Application Information (form #3129), retrieved 2026-09-23: dsps.wi.gov, dsps.wi.gov; Wis. Stat. ch. 145; Wis. Admin. Code SPS 305.92 and 305.93
• New Jersey State Board of Examiners of Master Plumbers, Application Process Overview, retrieved 2026-09-23: njconsumeraffairs.gov; N.J.S.A. 45:14C
• Maryland Board of Plumbing, License Requirements, retrieved 2026-09-23: labor.maryland.gov; Maryland Master and Journey Plumber/Gas Fitter candidate information bulletin (70 percent passing score): labor.maryland.gov; Maryland OneStop, Master Plumber/Gas Fitter License (insurance): onestop.md.gov
• North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors, Applicant Information, retrieved 2026-09-23: nclicensing.org; N.C. Gen. Stat. 87-21
• Alabama Plumbers and Gas Fitters Examining Board, How Do I Become Licensed, retrieved 2026-09-23: pgfb.alabama.gov; Code of Alabama, Title 34, Chapter 37
• Georgia Construction Industry Licensing Board, Division of Master and Journeyman Plumbers (Secretary of State), FAQ: sos.ga.gov; Ga. Comp. R. & Regs. 121-3-.02, Statewide Master and Journeyman Plumber License, retrieved 2026-09-23: law.cornell.edu; O.C.G.A. 43-14-8
• Official Code of Georgia, O.C.G.A. 43-14-2 (Master Plumber Class I and Class II scope) and 43-14-13 (master plumber experience and examination), as rewritten by SB 553 (Ga. L. 2026, p. 427), in force July 1, 2026, retrieved 2026-09-30: law.justia.com, law.justia.com
• Washington State Department of Labor and Industries, Plumber Certification, and Plumber Examination, retrieved 2026-09-23: lni.wa.gov, lni.wa.gov; RCW 18.106.040; RCW 18.106.400

Ready to talk through your state's requirements or line up a qualifying agent for your plumbing business? Call 615-219-2110 or use Hire a Qualifying Agent.