Pipefitter licensing in District of Columbia
No license required
District of Columbia requires no license for this trade. Nothing to obtain, and nothing to transfer in.
✓ Verified 20 August 2026 · board verified
Bringing your license from another state
Nothing to bring — DC licenses no pipefitters. We read the District's complete list of regulated occupations and no fitter appears on it. Three neighbors to keep straight: 'Plumber/Gasfitter' is the plumbing and FUEL-GAS credential (real, required on that scope — and a gasfitter card is never a pipefitting qualification); 'Refrigeration and A/C Mechanic' governs its own comfort scope; and 'STEAM ENGINEER' is a boiler OPERATOR license — accepting one as a fitter credential is the classic operator/installer mix-up.
Can you work while it is pending?
Nothing pending — no fitter license exists to wait on.
The exam and the hours
No fitter exam exists. Plumbing-scoped work runs on the Board of Industrial Trades' journeyman/master plumber-gasfitter exams (8,000 hours over four-plus years); steam-plant OPERATION is the steam engineer's world — a different occupation entirely.
How apprenticing works here
No fitter tier. The plumbing side's apprentice license (under direct master supervision) is that trade's lane.
The local picture
The District is the single jurisdiction — no sub-layer exists.
If you want to contract for yourself
Plumbing-scoped operations anchor on the licensed Plumbing/Gasfitting Trade Contractor (bonds and a designated DC master). Mechanical work outside the regulated occupations proceeds on business licensure and permits. For hydronic piping jobs, ask DLCP which card — if any — the permit demands; that boundary is the one open question we flag.
Checked against the state board or statute. Rules change — confirm with the board before you travel or accept work. This is information, not legal advice.
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