Massachusetts Plumber License Requirements (2026)

Massachusetts plumbers are licensed by the Board of State Examiners of Plumbers and Gas Fitters (BSEPGF) under MGL Chapter 142. The Board issues apprentice, Journeyman, and Master Plumber credentials, plus parallel Gas Fitter credentials, and enforces the Massachusetts State Plumbing and Fuel Gas Code (248 CMR). Massachusetts is one of the few states that uses its own plumbing code rather than adopting the IPC or UPC — 248 CMR contains numerous Massachusetts-specific requirements including indirect waste rules, backflow prevention, and water heater installation standards. Journeyman Plumber applicants must complete 8,500 hours of qualifying field experience and 550 hours of classroom instruction over a minimum of five years at a Board-approved school. Master Plumber applicants must hold the Journeyman license for at least one year and pass a separate Master examination.

The Licensing Authority

Authority over this credential rests with Massachusetts Board of State Examiners of Plumbers and Gas Fitters (BSEPGF), which issues and polices it under MGL Chapter 142; 248 CMR (Massachusetts State Plumbing and Fuel Gas Code). The Board licenses Journeyman, Master, and apprentice plumbers and gas fitters, administers trade examinations, and enforces the Massachusetts State Plumbing Code (248 CMR), which Massachusetts uses in place of the IPC or UPC.

Official portal: https://www.mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters
Address: 1000 Washington Street, Suite 710, Boston, MA 02118
Phone: (617) 727-9952

Baseline Eligibility

The threshold requirements are straightforward: age 18 or above, plus a valid Social Security Number. No Massachusetts residency requirement.

Good moral character

The Board conducts a fitness review. Felony convictions and prior license revocations are reviewed individually under 248 CMR 3.

Background investigation

Mandatory CORI release on the application.

Experience and Education Requirements

At least 5 years of Journeyman Plumber: 8,500 hours of practical plumbing experience under a licensed Master Plumber over a minimum of five years, plus 550 hours of classroom instruction at a Board-approved school. Master Plumber: hold the Journeyman license for at least one year of full-time work has to be evidenced and confirmed. Retain payroll, tax, project, or supervisor records, since the board may audit the experience claimed.

Accepted proof of experience or eligibility

Board Apprentice Plumber registration documenting all qualifying hours from the start
Experience Verification Form signed by each licensed Master Plumber supervisor
Certified payroll records, W-2 statements, or 1099 records covering the qualifying period
Transcript from a Board-approved plumbing school showing 550 classroom hours

Education substitution

Approved vocational plumbing programs may credit a portion of the classroom requirement under 248 CMR 3.06. Field hours cannot be substituted with education.

The Licensing Examination

Massachusetts Board of State Examiners of Plumbers and Gas Fitters (administered in-house) administers the required examination. Each part below must be passed before the license will issue:

Journeyman Plumber Examination — Massachusetts State Plumbing Code (248 CMR), theory, isometric drawing — 80 questions, 240 minutes, passing score 70%
Master Plumber Examination — business and law, advanced 248 CMR application, supervisory questions — 50 questions, 180 minutes, passing score 70%

Examination fee: $147 examination fee per attempt paid to the Division of Professional Licensure.

Retake policy: Failed examinations may be re-taken at the next scheduled Board sitting by paying a new $147 fee. The Board administers exams several times per year in Boston.

Financial Security and Insurance

No license surety bond is mandated statewide here under the cited sources, though project-specific or public-works bonding obligations can still attach to a given job.

General liability

The Board does not impose a state-level general liability minimum on individual licensees. Master Plumbers operating as a contracting business typically carry $1,000,000/$2,000,000.

Workers' compensation

Workers' compensation insurance is mandatory in Massachusetts under MGL Chapter 152 for any business with one or more employees.

Additional financial requirements

No state-level net worth requirement. Master Plumbers operating a plumbing contracting business must register the business with the Board and identify a licensed Master as the qualifying individual.

Fee Schedule

Fee	Amount
Application (non-refundable)	$147
Examination	$147
Initial license	$132
Renewal (every 2 years)	$102

License Renewal

The Massachusetts Master Plumber and Journeyman Plumber must be renewed every 2 years. The fee to renew is presently $102. Both Journeyman and Master licenses renew on the same two-year cycle. Lapsed licenses cannot perform plumbing work until reinstated.

Continuing education: Twelve hours of approved continuing education each two-year cycle including any 248 CMR code updates adopted during the period.

Downloadable Asset

2026 Massachusetts Plumber License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Reciprocity Map

Massachusetts grants no NASCLA reciprocity for this classification.

Reciprocal State	Accepted Exam	Conditions
New Hampshire	Trade exam waived	Bilateral agreement for Master Plumbers in good standing for at least one year.
Rhode Island	Trade exam waived	Bilateral agreement for Master Plumbers and Journeyman Plumbers in good standing.
Maine	Trade exam waived	Bilateral agreement for Master Plumbers in good standing for at least one year.

Reciprocal applicants still must pass a Massachusetts-specific 248 CMR open-book examination because the Massachusetts plumbing code differs substantially from the IPC/UPC used in most other states.

Weighing more than one jurisdiction? The national hub compares Plumber license requirements in every state — exam, bond, fee, and experience thresholds side by side.

The Licensing Roadmap

Register as an apprentice plumber. Massachusetts requires apprentice registration with the Board from day one. Hours are not credited toward the Journeyman license unless the apprentice was registered when the work was performed.
Complete 550 classroom hours at a Board-approved school. Five-year program covering 248 CMR, theory, isometric drawing, and code interpretation.
Accumulate 8,500 field hours over at least five years. Document field experience under one or more licensed Master Plumbers using the Board verification form.
Submit the Journeyman Plumber application. File with the Board including school transcript, apprentice hours, experience verification, CORI release, and $147 exam fee.
Pass the in-house Journeyman examination at 70%. Open-book exam covering 248 CMR, theory, and isometric drawing. Administered by the Board in Boston.
Work one year as a Journeyman. A minimum of one year of full-time Journeyman experience is required before applying for the Master examination.
Pass the Master Plumber examination. Submit the Master application and pass the separate business, law, and advanced code exam to operate a plumbing contracting business.

Preparation Resources

These materials are drawn from the regulator's own citations and the references applicants commonly use to prepare. CLR receives no compensation for listing them.

248 CMR — Massachusetts State Plumbing and Fuel Gas Code — Massachusetts Board of State Examiners of Plumbers and Gas Fitters. Primary technical reference. Open-book at the Board exam. Memorize the table of contents.
Massachusetts Plumbers Examination Study Guide — Upstryve / Contractor Campus. Most widely used study guide tailored to 248 CMR.
Audel Plumbers Pocket Manual — Wiley. General theory reference useful for the isometric drawing portion of the exam.

Before Filing: A Checklist

Before submitting to BSEPGF, the applicant should have each of the following ready:

☐ Board apprentice plumber registration (must precede any creditable hours)
☐ Board-approved plumbing school transcript showing 550 classroom hours
☐ Experience Verification Form documenting 8,500 hours over at least five years
☐ Massachusetts Board of State Examiners of Plumbers and Gas Fitters application with $147 fee
☐ CORI release form
☐ Journeyman Plumber exam pass certificate at 70%+
☐ Workers compensation coverage certificate for any business with one or more employees

Common Application Pitfalls

These are the recurring mistakes that most often delay or reject a Massachusetts Plumber application, based on the official instructions cited here.

Failing to register as an apprentice from day one

Hours worked before the apprentice is registered with the Board are not creditable. Many candidates discover this years into their career.

Studying the IPC or UPC instead of 248 CMR

Massachusetts uses its own plumbing code. Out-of-state study materials based on the IPC or UPC will not match the Massachusetts exam.

Underestimating the isometric drawing portion

The Journeyman exam requires drawing isometric piping diagrams from a written description. Candidates without drafting practice routinely fail this section.

Confusing plumber and gas fitter credentials

Massachusetts issues Plumber and Gas Fitter licenses separately. A Master Plumber cannot perform gas fitting work without the parallel Gas Fitter credential.

Missing the 248 CMR update CE

Continuing education must include any code updates adopted during the renewal cycle. Generic CE without the update course will not satisfy renewal.

Other Massachusetts Trade Licenses

Looking at a different trade? CLR also publishes these Massachusetts licensing guides:

Answers to Common Questions

Does Massachusetts use the IPC or UPC plumbing code?

Neither. Massachusetts uses its own Massachusetts State Plumbing and Fuel Gas Code (248 CMR), which contains numerous state-specific requirements that differ from both the IPC and the UPC. This is one of the most important things for out-of-state plumbers to understand.

How many hours of experience does Massachusetts require for a plumber license?

8,500 hours of practical field experience over a minimum of five years, plus 550 hours of classroom instruction at a Board-approved school. Apprentices must register with the Board from day one for hours to be credited.

What is the difference between a Journeyman and Master Plumber in Massachusetts?

A Journeyman Plumber may perform plumbing work under the direction of a Master. A Master Plumber may operate a plumbing contracting business, supervise apprentices and journeymen, and pull permits.

Does Massachusetts reciprocate plumber licenses?

Limited bilateral agreements with New Hampshire, Rhode Island, and Maine. Reciprocal applicants must still pass a Massachusetts-specific 248 CMR open-book exam because the state code differs from the IPC/UPC.

How often does the Massachusetts plumber license renew?

Every two years. Renewal requires twelve hours of approved continuing education including any 248 CMR updates adopted during the cycle.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

Verified 2026-05-04 · Next scheduled review 2026-08-02