Massachusetts requires 6,800 apprentice hours and 550 theory hours for a journeyman plumber license, not 8,000. Here is the full ladder, the HVAC hours that do not count, fees, and renewal rules.
Massachusetts licenses plumbers on three rungs, apprentice, journeyman, and master, and the journeyman rung requires 6,800 documented apprentice hours plus 550 hours of Board approved theory. That figure is not 8,000, and one entire category of field experience, hydronic heat and other HVAC installation work, does not count toward it no matter how many years you log.
At a glance
- Who licenses: The Board of State Examiners of Plumbers and Gas Fitters, inside the Division of Occupational Licensure (DOL)
- Journeyman experience: 6,800 clock hours as a licensed apprentice
- Education: 550 clock hours of plumbing and gas fitting theory, capped at 165 credited hours per calendar year
- Exam: Administered by PSI; six attempts for journeyman and gas fitter exams, no cap for the master exams
- Journeyman fees: an application fee, an $80 PSI exam fee, and a $52 license fee
This guide covers the full ladder, apprentice, journeyman, master, and the separate gas fitting license that runs alongside all three, along with the fee schedule and the continuing education hours required to renew. Every hour figure, fee, and deadline below is drawn from the current text of 248 CMR 11.00 and 3.00, as revised in Mass. Register #1559 (October 24, 2025), from the Board's published renewal fee schedule, and from PSI's candidate information bulletin dated October 3, 2025.
New to licensing in Massachusetts? Start with the Massachusetts contractor license requirements, or see our contractor license overview for how licensing works across states.
Who licenses plumbers in Massachusetts
The Board of State Examiners of Plumbers and Gas Fitters licenses every plumber, gas fitter, and apprentice in the Commonwealth. The Board sits inside the Division of Occupational Licensure (DOL), under the Office of Consumer Affairs and Business Regulation, at One Federal Street in Boston.
The agency was formerly called the Division of Professional Licensure (DPL), and some older pages, including parts of the Board's fee schedule, still carry that name. If a guide cites DPL fees without a date, check the figures against the current Board page before trusting them.
One provision worth knowing before anything else: 248 CMR 3.03(5) states that 248 CMR 3.00, in conjunction with M.G.L. c. 142, is deemed to occupy the whole field of the licensing of plumbers, gas fitters, and undiluted liquefied petroleum gas installers in Massachusetts. That is a full preemption clause. Unlike states where a contractor clears a state exam and then discovers individual cities want their own plumbing card, Massachusetts plumbing licensure is genuinely statewide. The state license is the only license.
The Massachusetts plumbing ladder
There are three rungs, and a candidate cannot skip one.
Apprentice Plumber. The entry license, issued under M.G.L. c. 142, Section 3A. A candidate cannot legally work as an apprentice without it. The license is applied for jointly by the apprentice and the employing master plumber, and both sign the registration form.
Journeyman Plumber. The working license. It requires 6,800 hours of documented experience and 550 hours of classroom theory, detailed below.
Master Plumber. The top rung, and the one a plumbing business is built on. It requires one additional year as a journeyman plus the fifth tier of the Board's education program. Only a master plumber can hold a plumbing business license or employ apprentice plumbers.
Massachusetts also licenses gas fitting as a parallel track with its own apprentice, journeyman, and master rungs, plus separate licenses for undiluted liquefied petroleum gas installers and limited undiluted liquefied petroleum gas installers. Most working Massachusetts plumbers end up holding both a plumbing and a gas fitting credential, and there is a shortcut for doing so, covered further down.
Journeyman plumber: the real requirements
Under 248 CMR 11.02(1)(b), a licensed apprentice becomes eligible to sit for the journeyman plumber exam by clearing four things.
Experience, 6,800 clock hours. The regulation requires documentary proof of no less than 6,800 clock hours as a licensed apprentice, and that figure applies to every apprentice licensed on or after September 1, 2008.
Some guides still in circulation publish 8,000 hours as current. That number is real, just outdated: 8,000 clock hours was the requirement for apprentices licensed before September 1, 2008, a route that closed under the Board's 2021 regulatory overhaul (Mass. Register Issues 1442 and 1447, effective April 30, 2021). A candidate pacing a career against 8,000 hours has been aiming well past the actual finish line.
The hours must be worked as an employee. The regulation is specific: the 6,800 hours must be accrued as a licensed apprentice working as an employee under the direct supervision of a Massachusetts licensed master plumber, or under the direct supervision of a Massachusetts licensed journeyman plumber who is in the employ of a master plumber.
The HVAC exclusion, the one that costs people years. The same subsection states that experience installing HVAC components for heating systems, steam piping, and hydronic heat piping does not count as qualifying experience. Radiant floor loops, baseboard hydronic, steam piping, boiler side heating work, none of it applies toward the 6,800 hours.
The Board retains discretion to grant partial credit for relevant experience in a related trade, but that is a discretionary petition, not a right to plan around. An apprentice at a combined plumbing and heating shop can reach four years of full time work and discover a large share of it does not qualify. Ask a supervising master which hours he is prepared to certify early, not in year four.
Education, 550 clock hours, over at least four years. The regulation requires 550 clock hours of plumbing and gas fitting theory, culminating in a school or instructor designed exam, and it caps the pace at no more than 165 education hours credited per calendar year. A candidate cannot buy a faster path to journeyman with a heavier course load. The four year floor comes directly from that annual cap.
Education must start within nine months. Apprentices must begin their education program within nine months of the initial issuance of the apprentice license. This deadline trips up apprentices who take the license, go to work, and plan to start school the following year.
A high school diploma or equivalent is also required.
The pacing rule nobody explains
A synchronization requirement governs the whole apprenticeship: for each year an apprentice obtains 165 clock hours of education, one and a half tiers, that apprentice must also accrue 1,700 clock hours of qualifying work experience. The classroom clock and the jobsite clock have to advance together.
An apprentice cannot bank four years of school while working part time and backfill hours later, and cannot work full time for four years and cram the theory at the end. The regulation allows limited exceptions, including a documented hardship that costs an apprentice their job mid tier, completing Tier 1 and Tier 2 in a single calendar year, completing Tier 1 before licensure, and a general good cause allowance at the Board's discretion.
The ten year cliff
An apprentice license cannot be renewed, and the licensee is not eligible for a new one, after ten years from the date the license was initially granted, for licenses issued on or after September 1, 2018. A career apprentice who never finishes the theory hours runs into that wall, though the Board may consider a reinstatement petition for good cause.
Exam attempts are capped, except for masters
A licensed apprentice gets six attempts at the journeyman exam without special Board approval showing good cause. The same six attempt cap applies to the journeyman gas fitter and LP installer exams. The master plumber and master gas fitter exams work differently: PSI's current candidate bulletin states there is no limit on the number of times a candidate may take either master exam. A failed attempt at any exam must be retaken within 12 months of application approval, or the candidate has to reapply.
If live exam prep classes would help before test day, our exam prep tour covers that option, with classes coming soon.
Master plumber: shorter than you think
Once a candidate holds a Massachusetts journeyman plumber license, the master requirement under 248 CMR 11.02(2) is modest.
Experience, one year and at least 1,700 clock hours held as a Massachusetts journeyman plumber, actively engaged in installing, repairing, or maintaining plumbing and gas fitting systems.
Education, Tier 5. The 110 hour fifth tier of the Board's five tier Plumber Educational Program. Individuals who completed this tier as apprentices are not required to complete any additional education for master.
So the full ladder runs roughly five years: four as an apprentice, one as a journeyman.
The gas fitting track, and the shortcut
Gas fitting is a separate license with a shorter ladder. Under 248 CMR 11.02(3), a journeyman gas fitter needs 5,100 clock hours as a licensed apprentice gas fitter and 330 clock hours of gas fitting theory over no less than three years. The same employment and supervision language applies, and the same HVAC exclusion appears in the gas fitting subsection. Master gas fitter (248 CMR 11.02(4)) requires one year and 1,700 hours as a journeyman gas fitter plus 50 clock hours of master level gas fitting theory.
Here is the part worth real money. A journeyman or master plumber who wants a journeyman gas fitting license may obtain it by submitting a completed application, paying the fee, and passing the exam, with no additional education or work experience required. The same path runs from master plumber to master gas fitter.
The credit also runs the other way, though less generously. A Massachusetts journeyman or master gas fitter can petition to apply up to 220 hours of education and 3,400 hours of work experience toward a journeyman plumbing license.
| Prior credential | Education credit | Experience credit |
|---|---|---|
| Journeyman or master gas fitter | up to 220 hours | up to 3,400 hours |
| Apprentice gas fitter | up to 110 hours | up to 1,700 hours |
| Undiluted LP gas installer | up to 110 hours | up to 1,700 hours |
| Limited undiluted LP installer | none | none |
All four rows require a petition to the Board; none of this credit is automatic.
Vocational school students get a real head start
A graduate of a Board approved Massachusetts Public Comprehensive High School Career/Vocational Technical School program, following the CVTE framework, can claim up to the first three tiers, 330 hours of educational theory, plus up to 1,700 hours of experience credit accrued during the program. Those hours can come from supervised shop or lab work at the school, a Board approved off campus project run by the school, or a school arranged co-op with a master plumber once the student holds an apprentice license.
That is 330 of the 550 education hours and 1,700 of the 6,800 experience hours banked before graduation, close to a full year of the ladder, earned in high school.
How to apply, and what it costs
Journeyman plumber applications must be filed online through the eLIPSE platform using a MyMassGov account. The Board's own guidance is blunt that mailed applications will be returned, and publishes a Linking Your License guide worth reading before creating the account.
A complete application generally takes these steps:
- Confirm the required experience and education hours have been reached under 248 CMR 11.02.
- Create a MyMassGov account and follow the Board's Linking Your License guide to connect it to eLIPSE.
- Upload the Education Verification Form, the Statement of Experience Form signed by the supervising master, a passport style photo, and a notarized CORI acknowledgement.
- Wait for Board approval, then schedule the PSI exam once an Examination Authorization Notice arrives.
- Pass both parts of the exam and pay the license fee through eLIPSE to receive the license.
The Employer's Statement section of the Statement of Experience Form cannot be modified after signature, so confirm hours with a supervising master before submission. The exam itself is closed book, computer generated, and split into two independently scored parts; a candidate who fails one part only retakes that part.
What it costs, in full
A journeyman or master candidate pays separate fees at different stages: a Board application fee, a PSI examination fee paid to the testing vendor, and a license fee paid once both parts of the exam are passed.
| License | PSI exam fee | License fee |
|---|---|---|
| Journeyman Plumber | $80 | $52 |
| Master Plumber | $80 | $78 |
| Journeyman Gas Fitter | $80 | $52 |
| Master Gas Fitter | $80 | $97 |
Notes on the fee structure:
- The Board's own application fee is separate from the PSI figures above: $31 for journeyman and master applications, on both the plumbing and gas fitting sides.
- The apprentice plumber application fee is $14, with no PSI exam fee since apprentices do not test.
- Apprentice license renewal runs $40 every two years; journeyman renewal matches the license fee, $52; master plumber renewal is $78 and master gas fitter renewal is $97.
- A late renewal, submitted after the license expires, adds a $57 late fee on top of the renewal amount.
- Veterans, as defined under M.G.L. c. 4, Section 7, clause 43, receive a 5 percent credit on each part of the PSI exam with a DD214 on file, and applicants qualifying under the Valor Act II are not required to pay PSI the license fee.
Fees are set by the Board and by PSI and change without much notice. Verify current amounts with the Board of State Examiners of Plumbers and Gas Fitters and with PSI before budgeting.
One procedural trap: incomplete applications are held open for 180 days from receipt. After 180 days an incomplete application is treated as abandoned, and the candidate starts over with a new application and a new payment.
Renewal and continuing education
Licenses renew every two years under 248 CMR 3.03(6), on a cycle that resets May 1 of even numbered years. A licensee must notify the Board of any address or email change within 15 days.
Continuing education is a specific requirement under 248 CMR 11.04, not a box to check.
| License | CE required per cycle | Repeats allowed |
|---|---|---|
| Journeyman or Master Plumber | 12 clock hours | No |
| Journeyman or Master Gas Fitter | 6 clock hours | No |
| Apprentice | None | Not applicable |
Notes on continuing education:
- Courses must come from a Board approved provider, and a course already completed does not count again toward the same cycle.
- A plumber who also holds a gas fitting license typically completes both sets of hours, commonly delivered as linked plumbing and gas fitting sessions.
- Licensees must retain completion certificates for three renewal cycles.
- Plan the two year cycle around available approved courses well before the May 1 renewal date, not the week before.
Where this goes next: the business license
Holding a master plumber license lets a person work as a master. It does not, by itself, let a company do plumbing work in Massachusetts.
Under 248 CMR 3.03(1)(a), every corporation, LLC, partnership, or similar entity that has plumbing or gas fitting employees must maintain a separate business license. Individuals practicing under their own name or a DBA do not need one, but the moment a plumber incorporates and hires, that requirement applies.
Massachusetts structures this differently from most states. The business license is not issued to the company itself. It is issued to a person, and that person has to occupy a specific seat inside the company:
- Corporation: the applicant must be a master plumber who is a listed officer of the corporation.
- LLC: the applicant must be a master plumber who is a listed manager of the LLC. In a member managed LLC, a listed member may count as a manager.
- General partnership, LP, or LLP: all partners must possess current Master Plumber or Master Gas Fitter licenses, not just one of them.
That master plumber is called the licensee of record under 248 CMR 3.03(1)(d), and is responsible for ensuring the business's work is performed by validly licensed individuals. The regulation uses one other name for that same seat: 248 CMR 3.03(1)(e)(1)(c), on what happens when that master's license lapses, calls him the qualifying officer. Other states use the term qualifying agent for a comparable role.
A qualifying agent, under whatever name a state regulation uses for it, qualifies the company by being an owner or a full time W-2 employee who actually supervises the licensed work, not a name on file. For what that role covers and who can fill it, see our guides to who can hire a qualifying agent and what a qualifying agent is, and our contractor qualifier services for help placing one. If the Massachusetts license is what allows a plumbing company to operate, the rules governing that relationship, including how fast a replacement must be filed when a licensee of record leaves, are covered in detail in our guide to the Massachusetts qualifying officer requirements.
Frequently asked questions
How long does it take to get a plumbing license in Massachusetts? Roughly four years to journeyman, driven by the education pacing rule rather than the hours: 550 theory hours at a maximum of 165 credited per calendar year cannot be compressed below four years. Master adds one more year and 1,700 hours. Vocational school graduates can shave close to a year off the front end.
Does Massachusetts have a separate HVAC license? No. Massachusetts issues no license called an HVAC license. Heating and cooling work is split across refrigeration, pipefitting, sheet metal, and plumbing or gas fitting credentials depending on what is being touched, and a separate Bureau's refrigeration technician and pipefitter rules change on November 9, 2026. See our Massachusetts HVAC licensing guide.
Do hydronic heating hours count toward a journeyman plumber license? Not as a right. 248 CMR 11.02(1)(b) excludes experience installing HVAC components for heating systems, steam piping, and hydronic heat piping from qualifying hours. The Board may grant partial credit for relevant related trade experience at its discretion, but a candidate should not assume it.
How much does it cost to get a plumbing license in Massachusetts? PSI's published figures are an $80 exam fee and a $52 license fee for the journeyman license, plus the Board's own application fee and the cost of the required 550 hours of approved schooling, which varies by provider. Master plumbers pay the same $80 exam fee, then a $78 license fee. Verify current amounts with the Board and PSI.
How many continuing education hours does a Massachusetts plumber need to renew? Journeyman and master plumbers need 12 hours of Board approved continuing education per two year renewal cycle, without repeating a course. Gas fitters need 6 hours per cycle. Apprentices have no continuing education requirement. The renewal cycle resets May 1 of even numbered years, and a late renewal adds a $57 fee.
Can a company hold a Massachusetts plumbing license without a master plumber? No. The business license is applied for and issued to a master plumber who is a listed officer of the corporation or manager of the LLC, or to every partner in a partnership structure. Without that person in place, a corporation, LLC, or partnership that has plumbing employees cannot hold the business license.
What does a qualifying agent do for a Massachusetts plumbing company? The person in the licensee of record seat has to actually supervise the licensed work as an owner or full time employee, not simply hold a credential on paper. If a contractor needs a licensed master in that seat, start with Hire a Qualifying Agent; if a master plumber wants to understand the role before taking it on, start with What Is a Qualifying Agent.
If you need a master plumber in the seat
Massachusetts wrote its rules so a plumbing business cannot exist without a master plumber embedded in its governance, as an officer, a manager, or a partner. That is not a formality to paper over. It is the license.
The Licensing Company places qualifying master tradespeople with contractors as full time W-2 employees, the arrangement that survives scrutiny in states that police this seriously, and Massachusetts polices it seriously. We do not arrange percentage deals, per project payments, flat fee license placements, or 1099 arrangements, because those structures are exactly what boards look for.
If you are a contractor who needs a licensed master in place, start with Hire a Qualifying Agent or call 615-219-2110. If you are a licensed master plumber who wants to understand what the role involves before considering it, start with What Is a Qualifying Agent and Become a Qualifying Agent. Licensing rules vary sharply state to state; our state licensing guides break down each one.
Related reading: Does a contractor license qualifier have to be an owner or an employee? and Can a qualifying agent be a 1099 contractor? and How to get an electrician license in Massachusetts and our contractor license overview.
Sources
- 248 CMR 11.02, Education and Experience Standards and Requirements for Licensure, Cornell Law School Legal Information Institute reproduction, cross checked against the Mass. Register #1559 (October 24, 2025) citation on the official 248 CMR 11.00 page at mass.gov, used because the mass.gov document download returned an access error on retrieval; retrieved 2026-10-14.
- 248 CMR 3.03, Business and Apprentice Licenses, Renewal, and Inspector Requirements, Cornell Law School Legal Information Institute reproduction, used for the same reason; retrieved 2026-10-14.
- Board of State Examiners of Plumbers & Gas Fitters Licensure Candidate Exam Application Information, PSI Services LLC, dated October 3, 2025, test-takers.psiexams.com/api/content/bulletin/598, for exam structure, exam fees, license fees, re-examination rules, and the veteran exam credit; retrieved 2026-10-14.
- Massachusetts Division of Professional Licensure fee schedule for plumbers and gas fitters, licensing.reg.state.ma.us/public/dpl_fees/dpl_fees_results.asp?board_code=PL, for renewal and late fees; retrieved 2026-10-14.
- Massachusetts alert, Effective November 9, 2026, New Licensing Requirements Take Effect for Journeyman Pipefitters and Refrigeration Technicians, mass.gov, for the separate Bureau of Pipefitters, Refrigeration Technicians, and Sprinkler Fitters rule change cited in the FAQ; retrieved 2026-10-14.
- Board of State Examiners of Plumbers and Gas Fitters, mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters.
- Mass. Register #1559 (October 24, 2025), the current revision of 248 CMR 3.00 and 11.00 referenced throughout this guide.
Requirements, fees, and deadlines described here reflect 248 CMR as revised in Mass. Register #1559 (October 24, 2025) and the Board's published fee pages as of October 2026. Board fees, exam vendor fees, and regulations change. Verify current requirements directly with the Board of State Examiners of Plumbers and Gas Fitters before relying on any figure in this guide.
Disclaimer: This article is provided for educational and informational purposes only. It does not constitute legal advice, licensing guidance, or an offer of services. Licensing requirements vary by jurisdiction. For specific compliance questions, contact The Licensing Company for a confidential consultation.