Pipefitter licensing in Missouri
Licensed locally, not statewide
Missouri has no statewide license for this trade. The city or county decides — check the jurisdiction the job is actually in before you travel.
✓ Verified 20 August 2026 · board verified
Bringing your license from another state
Missouri has no state fitter license — the statewide mechanical act was never enacted — so nothing transfers at state level and the metro counties own the question. ST. LOUIS COUNTY examines JOURNEYMAN and MASTER PIPEFITTERS by name; Kansas City runs its own mechanical examining structure. One warning for card-holders heading onward: several states expressly refuse city- and county-earned credentials for their own reciprocity (Minnesota by rule), so a Missouri county card is real at home and travels poorly.
Can you work while it is pending?
Jurisdiction-dependent and not established — no local work-while-pending rules were read. Do not start on silence inside a licensing county.
The exam and the hours
ST. LOUIS COUNTY: Journeyman and Master Pipefitter examinations through the county's testing arrangement (budget roughly $175 journeyman / $225 master per the county catalog); experience standards per the county's examiner rules. KANSAS CITY: its own mechanical exams. Ask which jurisdiction pulls the permit, then get that examiner's current requirements.
How apprenticing works here
County-level apprentice registration and hour-banking toward the local journeyman exams; registered apprenticeship in parallel. No state tier exists.
The local picture
THE WHOLE ANSWER LIVES HERE: St. Louis County mapped (journeyman + master pipefitter exams); Kansas City real, fitter classes to confirm with the city; St. Louis CITY is a separate authority from the county. 'Which jurisdiction pulls the permit?' is the first question of every Missouri placement.
If you want to contract for yourself
Company licensing is likewise local — county and municipal mechanical contractor licenses anchored on master-card holders. Verify the employer in the jurisdiction of the work.
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.