PLUMBING x MASSACHUSETTS

Plumbing contractor requirements in Massachusetts.

M.G.L. c. 142, § 3 prohibits engaging in business as a master plumber, or working as a journeyman or apprentice plumber, without a license — and also bars advertising regulated work without one. Licenses run two years and renew on or before May 1 (c. 142, § 6); the Board opens renewals February 1 of each even-numbered year. Journeyman and master plumbers complete 12 hours of approved continuing education per renewal; gas fitters complete 6.

Current Board fees: journeyman plumber $31 application + $52 license; master plumber $31 application + $78 license; renewals $52 (journeyman) and $78 (master); corporation or partnership renewal $225; late renewals add $57. Plumbing businesses organized as corporations or LLCs must name a licensed master plumber as an officer or manager. The Uniform State Plumbing Code, 248 CMR 10.00, was amended effective December 8, 2023.

STATE LICENSE
RequiredMassachusetts Board of State Examiners of…
STATUTE
M.G.L. c. 142, §§ 3, 6, 16; 248 CMR
RENEWAL
2 years — May 1 of even-numbered years12 hrs per renewal (plumbers) · 6 hrs (gas fitters)
VERIFIED
October 2026Official sources
FILE · PLUMBING x MASSACHUSETTS
Compliance Dossier
Public
File
October 2026
STATE AUTHORITYMassachusetts Board of State Examiners of Plumbers and Gas Fitters — Division of Occupational Licensure
STATUTE / CODEM.G.L. c. 142, §§ 3, 6, 16; 248 CMR
SCOPEStatewide · Massachusetts
RENEWAL2 years — May 1 of even-numbered years
CONTINUING ED.12 hrs per renewal (plumbers) · 6 hrs (gas fitters)
LOCAL OFFICES2 counties on file
FILE PLUMBINGSCOPE STATEWIDE · MASSACHUSETTSTYPE VERIFIED RULE FILE
VERIFIED October 2026STATUS PUBLIC REFERENCE
What this file settlesThe Massachusetts rules for plumbing contractors, verified against official sources.
LICENSE TRUTH
Plumbing in Massachusetts requires a master plumber license to run the business and journeyman or apprentice licenses for workers, all issued by the Board of State Examiners of Plumbers and Gas Fitters.
STATE ↔ LOCAL
Licensing is statewide and licenses are valid throughout the Commonwealth (c. 142, § 6); local plumbing and gas inspectors issue permits and inspect under 248 CMR.
EVERY CLAIM SOURCED
Each requirement below carries its citation and official source. Facts we could not confirm are listed as pending — never asserted.
§ 01 · Permit Stack

How plumbing work is governed in Massachusetts.

The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.

STATE — THE LICENSE
Plumbers & Gas Fitters Board (c. 142)
MASTER PLUMBERJOURNEYMAN / APPRENTICEBUSINESS CERTIFICATE
STATE — THE CODE
248 CMR 10.00 (amended Dec. 8, 2023)
UNIFORM STATE PLUMBING CODE
LOCAL — WHERE YOU PLUMB
Local plumbing inspector
PLUMBING PERMITINSPECTIONS

Read it bottom-up.

Licensing is statewide and licenses are valid throughout the Commonwealth (c. 142, § 6); local plumbing and gas inspectors issue permits and inspect under 248 CMR.

The local offices section below names the exact permit desk for every Massachusetts county on file.

Source · Massachusetts Board of State Examiners of Plumbers and Gas Fitters — Division of Occupational LicensureLast verified · October 2026
§ 02 · Specs Ledger

Every requirement, with a number on it.

Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.

RequirementIssued byCostTimeCitationStatus
Master Plumber LicenseHolds a journeyman license; exam through PSI
Plumbers & Gas Fitters Board
$31 application + $78 license
2 years; renew by May 1 (even years)
M.G.L. c. 142, §§ 3, 6
REQUIRED
Journeyman Plumber LicenseEducation verification + statement of experience signed by supervising master
Plumbers & Gas Fitters Board
$31 application + $52 license
2 years; renew by May 1 (even years)
M.G.L. c. 142, § 3
REQUIRED
Apprentice Plumber LicenseFiled before starting the apprenticeship
Plumbers & Gas Fitters Board
$40 renewal
2 years
M.G.L. c. 142, § 3A
CONDITIONAL
Plumbing Business CertificateCorporation/LLC must list a master plumber as officer or manager
Plumbers & Gas Fitters Board
$225 renewal
2 years
M.G.L. c. 142, § 3; Board business application
CONDITIONAL
Continuing Education12 hours for journeyman and master plumbers
Approved provider
Provider rate
Each renewal
Board renewal requirements (mass.gov)
REQUIRED
Plumbing PermitFiled with the local plumbing inspector
City / town
Set locally
Per job
248 CMR; local inspector
REQUIRED
§ 03 · Year-One Cost

What it costs to start plumbing in Massachusetts.

Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.

Year-one ledger
Massachusetts · Plumbing
Journeyman plumber$31 application + $52 license$83
Master plumber$31 application + $78 license$109
Business renewalCorporation or partnership$225
Late renewal feeAny renewal received after May 1$57
Year-one floor$109 master license + exam; renewals $52–$78 every 2 years
Excludes tools, vehicle purchase, payroll, and marketing.
NOTE
May 1 of even years

All plumber and gas fitter licenses renew on one statewide cycle: renewal opens February 1 of each even-numbered year and closes May 1.

NOTE
Gas is a separate license

Gas fitting has its own master/journeyman/apprentice licenses (master gas fitter renewal $97); a plumbing license alone does not cover gas piping.

NOTE
Code changed in December 2023

248 CMR 10.00 amendments took effect December 8, 2023 and apply to jobs permitted on or after that date.

§ 04 · Path to First Job

From day zero to first inspection.

A practical sequence for a new plumbing contractor in Massachusetts. Actual agency processing times are noted in the ledger above.

1
STEP 1
Apprentice license before starting
Plumbers & Gas Fitters Board
2
STEP 2
Complete theory education + supervised hours
Authorized school / master plumber
3
STEP 3
Journeyman exam + license
PSI / Board — $31 + $52
4
STEP 4
Master exam + license
PSI / Board — $31 + $78
5
STEP 5
Business certificate for an entity
Board
6
STEP 6
12 CE hours, renew by May 1 (even years)
Approved provider
§ 05 · Compliance Checklist

Check them off.

Each item names the issuing authority, cycle, and citation.

01
License every plumber
Masters, journeymen, and apprentices all hold Board licenses; a master may not employ an unlicensed journeyman or apprentice.
STATEESSENTIALM.G.L. c. 142, §§ 3, 16
Plumbers & Gas Fitters BoardIssuing authority
02
Advertise only with a license
Soliciting plumbing work by sign, listing, or other advertisement requires a license.
STATEADVERTISINGM.G.L. c. 142, § 3
YouIssuing authority
03
Renew by May 1
Renew every two years; late renewals pay a $57 late fee.
RENEWALDEADLINEM.G.L. c. 142, § 6
BoardIssuing authority
04
Complete 12 CE hours
Journeyman and master plumbers, every renewal; gas fitters 6 hours.
RENEWALEDUCATIONBoard renewal requirements (mass.gov)
Approved providerIssuing authority
§ 06 · Enforcement

What the law does about unlicensed plumbing work.

Statutory consequences with their citations — not estimates, not “commonly cited” guesses.

§
M.G.L. c. 142, § 16Statute

Unlicensed plumbing or gas fitting

Working or doing business as a plumber or gas fitter without a license, or a master employing unlicensed journeymen or apprentices.

ConsequenceFine up to $100
§
M.G.L. c. 142, § 6Statute

License suspension or revocation

The examiners may suspend or revoke a license for violating plumbing or gas fitting law, failing to follow Board rules, or other sufficient cause.

ConsequenceLoss of license
§ 07 · Local Offices

Where the permit is filed, county by county.

Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.

§ 08 · Massachusetts FAQ

Questions plumbing contractors ask about Massachusetts.

Q01Do I need a license to do plumbing in Massachusetts?+
Yes. M.G.L. c. 142, § 3 requires a Board license to engage in business as a master plumber or to work as a journeyman or apprentice plumber.
Q02When do plumbing licenses expire?+
Licenses run two years and must be renewed on or before May 1 (c. 142, § 6); the Board opens renewals February 1 of each even-numbered year.
Q03Do plumbers need HIC registration?+
OCABR's job chart lists plumbing as licensed-trade work that does not require HIC registration; a CSL and building permit come in only if building elements are cut or notched.

General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.

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