Missouri Plumbing License Requirements
No. Missouri has no statewide plumbing license; cities and counties license plumbing work.
Local only · By BrazeJobs Team · Updated
Requirements
| Local license | Varies by city |
Local licenses in Missouri
Kansas City
CityContractor license plus certificate of qualification (journeyman/master plumber; mechanical supervisor; master pipe fitter; gas-fired appliance supervisor)
KCMO City Planning and Development, Permits Division
Contractor needs a city business license and a qualified individual holding a certificate of qualification in the trade (Article XII, Kansas City Building and Rehabilitation Code). Reference letters required for most certificates.
- Source: kcmo.gov · checked November 5, 2026
St. Louis
CityMechanical contractor and pipefitter licenses; plumber and drainlayer licenses
St. Louis Building Division (Mechanical Contractors Board; Plumbers and Drainlayers Board)
Independent city (no county).
- Source: stlouis-mo.gov · checked November 5, 2026
Springfield
CityJourneyman and master certifications (mechanical, plumbing, gas)
Springfield Building Development Services
Journeyman: 4 years under a master in the trade or 6 years' experience. Master: 4 years as certified journeyman or 10 years' experience. Exams via Prometric, Experior, Block or ICC (Pearson VUE), matching the city's required exam.
- Source: springfieldmo.gov · checked November 5, 2026
Apprenticeship
| Registering agency | U.S. Department of Labor Office of Apprenticeship (no state agency) |
Programs register through the Office of Apprenticeship; use the Partner Finder for local sponsors.
- Source: apprenticeship.gov · checked November 6, 2026