Plumber License Requirements in Massachusetts
License RequiredLast verified March 9, 2026
Agency And Exam
Issuing agency: Massachusetts Board of State Examiners of Plumbers and Gas Fitters
Official licensing agency website
Exam provider: PSI
Reciprocity And License Levels
License levels
Journeyman PlumberMaster Plumber
Reciprocity states
None listed
Notes
Massachusetts licenses plumbers through the Board of State Examiners of Plumbers and Gas Fitters. Current state application guidance covers journeyman and master plumber licenses, requires board approval before examination, and states that approved journeyman applicants schedule their exam through PSI. Verified against Massachusetts plumbing licensing materials on 2026-03-09.