Plumber License from California to District of Columbia: Does It Transfer? (2026)
Does District of Columbia accept a California plumbing license?
There is no California state license to carry to District of Columbia: California issues no statewide journeyman plumber license. District of Columbia does license this work, so ask the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing whether it credits a local license or your documented experience; otherwise you qualify as a new applicant.
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Same data, interactive — with share link and board links.
Verdict
No state license to transfer
The issue on this move is the starting point: California issues no statewide journeyman plumber license — plumbing there is regulated at the contractor level or by cities and counties — so there is no California state license for District of Columbia to verify or endorse. District of Columbia does license plumbers, through the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing, and it reviews out-of-state plumbers for endorsement, but that route starts from a state license. Ask the board, in writing, whether it credits a local California license, a contractor-level credential or your documented hours; otherwise plan to qualify as a new journeyman applicant. 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.
What's different between California and District of Columbia
Computed from both states' verified data rows, in both directions, and from the route every other origin gets into District of Columbia. Exam notes are our summary of each board's published rules, with sources below.
- Route, each way
California to District of Columbia (this page): No state license to transfer.
District of Columbia to California (the reverse move): No state license to transfer.
California issues no statewide journeyman plumber license, so neither direction is a state-license transfer.
- Does coming from California matter?
Coming from California matters here: only 9 of 50 origins (the 50 states) get this result for a move into District of Columbia.
The others get: licensure by endorsement (41).
- Fee and processing
California issues no statewide journeyman plumber license, so there is no California state license application fee or processing time to compare with District of Columbia's.
- Exam rules on record
District of Columbia and California carry different exam notes (our summaries, below); any state law or jurisprudence exam is listed with each state's requirements.
- District of Columbia (this move): 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
- California (the reverse move): Not applicable at the journeyman level — California issues no state journeyman plumber license, so there is no state journeyman trade exam. Plumbing is licensed only at the contractor level by the Contractors State License Board (C-36 Plumbing). At that contractor tier, CSLB has a reciprocity agreement covering the C-36 classification with Arizona only: an Arizona C-37 or C-37R contractor who has held that license active and in good standing for the previous five years may have the C-36 trade exam waived (CSLB reserves the right to require it), but must still pass CSLB's Law and Business exam. CSLB's other reciprocity partners (Nevada, Louisiana, Mississippi, North Carolina) do not map to C-36 Plumbing.
What changes, California → District of Columbia
| California (current) | District of Columbia (destination) | |
|---|---|---|
| Application fee | No state journeyman plumber license exists, so there is no journeyman fee. For reference, the CSLB C-36 plumbing CONTRACTOR license (contractor tier, out of scope) is $450 original application + $200 initial license fee (sole owner) / $350 (non-sole owner), plus a bond and Live Scan fingerprint 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) |
| Processing time | Not applicable — no state journeyman plumber license is issued | No board-stated processing time |
| Licensing authority | California Contractors State License Board (CSLB) | District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing |
The destination column is what you must satisfy — District of Columbia sets the rules for this move.
Step by step
- Review District of Columbia's requirements on the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing website (linked below) — rules change.
- Ask the District of Columbia Board of Industrial Trades — Department of Licensing and Consumer Protection (DLCP), Occupational and Professional Licensing whether it credits a local California license or your documented experience: California issues no statewide journeyman plumber license, so there is no state license to verify.
- Otherwise apply as a new applicant: meet District of Columbia's education/experience requirements and pass the exams it requires.
- Submit the application with fees listed above, and allow for the processing time shown there.
Official links
Related guides
Frequently asked questions
What happens to my California credential after I'm licensed in District of Columbia?
Nothing changes it. California issues no statewide journeyman plumber license, so any local or contractor-level California credential you hold runs on its own authority's renewal rules, independently of your District of Columbia license.
Sources
Primary sources only — official boards and compact commissions. Data last verified 2026-07-21.
- DC DLCP Board of Industrial Trades — Plumbing/Gasfitting Application Instructions (license classes, experience, exam waiver) ↗ (accessed 2026-07-21)
- DC DLCP — Board of Industrial Trades (fees; reciprocity limited to electricians) ↗ (accessed 2026-07-21)
- CSLB — C-36 Plumbing Contractor classification detail (plumbing licensed only at contractor level) ↗ (accessed 2026-07-21)
- CSLB — Reciprocal Classifications List (C-36 reciprocity maps only to Arizona C-37/C-37R) ↗ (accessed 2026-07-21)
- CSLB — Reciprocity Exam Requirements (trade portion may be waived; Law & Business exam still required; 5-year license) ↗ (accessed 2026-07-21)
Reviewed by the License Reciprocity Editorial Team · verified against primary sources 2026-07-21
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