Transfer Your Plumber License to District of Columbia: Reciprocity & Endorsement (2026)

Updated 2026-10-29 · Data verified 2026-07-21 · source: District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing ↗

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Does my plumbing license transfer to District of Columbia?

District of Columbia publishes no named partner list, but the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing evaluates out-of-state plumbers for endorsement individually, crediting a comparable exam or documented experience. The District has no state-to-state plumber reciprocity — the Maryland/Virginia trade reciprocity DLCP publishes applies to electricians, not plumbers. DC waives its journeyman plumber examination only for applicants who prove completion of a nationally-certified apprenticeship program; all other applicants qualify by documenting experience (journeyman: 4 years / 8,000 work hours) and must pass the DC journeyman plumbing exam (open-book on the 2012 International Plumbing Code and 2012 International Fuel Gas Code). The master tier requires 8 years / 16,000 hours and its own exam. Application fee: $175 (Journeyman: $65 application + $110 initial license (up to 2 years) = $175. Master: $65 + $120 = $185. Apprentice license $110. Renewals: journeyman $110, master $155).

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Verdict

Licensure by endorsement

District of Columbia works case-by-case rather than from a license-reciprocity list, so the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing's judgment on your specific license, exam history, and documented experience decides the outcome. Where the pathway is equivalency-based, the board is measuring your home state's standards and experience requirements against its own. Get any exam waiver or experience credit confirmed in writing before you rely on it — discretionary approvals are exactly the kind of thing that shifts between reviewers.

DC licenses apprentice, journeyman and master plumbers/gasfitters through the Board of Industrial Trades. There is no plumber reciprocity: DLCP's Maryland/Virginia trade reciprocity applies only to electricians (Maryland masters; Virginia journeymen and masters). The sole exam-waiver for plumbers is completion of a nationally-certified apprenticeship program, which waives the journeyman exam. The journeyman exam is open-book on the 2012 IPC and 2012 IFGC. A master plumber already licensed elsewhere still qualifies via DC's experience/exam route. No national plumber verification database exists; verification is via the DC OPLA license search.

District of Columbia requirements at a glance

Out-of-state plumbing license transfer requirements for District of Columbia, verified 2026-07-21
Fees	$175 (Journeyman: $65 application + $110 initial license (up to 2 years) = $175. Master: $65 + $120 = $185. Apprentice license $110. Renewals: journeyman $110, master $155)
Processing time	No board-stated processing time

Step by step

Confirm District of Columbia's current requirements on the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing website — rules change.
Submit the endorsement application to the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing (application linked on this page).
Arrange license verification from your current state via the verification system.
Journeyman: document 4 years / 8,000 work hours (tax records and employment-verification letter), OR waive the journeyman exam with proof of completing a nationally-certified apprenticeship program.
Master: document 8 years / 16,000 hours and pass the master exam.
Provide a passport-style photo and government-issued ID and apply online through the Board of Industrial Trades.
Pay the fees listed above, and allow for the processing time shown there.