District of Columbia Plumbing License Requirements
Yes. District of Columbia licenses plumbers through the DC Board of Industrial Trades (DLCP). It issues apprentice, journeyman, master and contractor credentials.
State plumber license · By BrazeJobs Team · Updated
License tiers
| Apprentice | Apprentice license |
| Journeyman | Plumber/Gasfitter Journeyman |
| Master | Plumber/Gasfitter Master |
| Contractor | Contractor (DC master + bond) |
Requirements
| Exam | PSI exam |
| Fees | Application $65; apprentice/journeyman $110, master $120, contractor $120; renewal journeyman $110, master $155, contractor $180 |
| Renewal | 2 years (Mar 31, even years) |
| Local license | No (state license covers) |
| Board | DC Board of Industrial Trades (DLCP) |
Exam
| Exam provider | PSI (for DC Board of Industrial Trades) |
Board of Industrial Trades: exams scheduled online with PSI (psiexams.com).
- Source: dlcp.dc.gov · checked November 6, 2026
Licensed in another state or the military
| Reciprocity | Reciprocity for Maryland plumbing professionals |
- Source: dlcp.dc.gov · checked November 6, 2026
Apprenticeship
| Registering agency | State Apprenticeship Agency (DC DOES Apprenticeship DC) |
- Source: apprenticeship.gov · checked November 6, 2026
- Source: does.dc.gov · checked November 6, 2026
Plumbing code
| Code in force | 2015 IPC with DC amendments |
- Source: dob.dc.gov · checked November 5, 2026