Plumber License Requirements in District of Columbia
License RequiredLast verified March 24, 2026
Agency And Exam
Issuing agency: District of Columbia Department of Consumer and Regulatory Affairs
Official licensing agency website
Exam provider: PSI
Reciprocity And License Levels
License levels
Apprentice PlumberJourneyman PlumberMaster Plumber
Reciprocity states
None listed
Notes
Issued by the DC Department of Consumer and Regulatory Affairs (DCRA). Journeyman requires 4 years apprenticeship and passing exam. Master requires Journeyman license, additional experience, and separate exam. Verify current requirements with DCRA.