Plumbing Licensing Requirements

Plumbing Work Performed Within the Jurisdiction of Jefferson City

The municipal Plumbing Code states all plumbing work performed within the jurisdiction of Jefferson shall be performed by licensed plumbing contractors, with only one exception, that a home owner may perform his own plumbing work at his residence when approved by the plumbing inspector.

No person, firm or corporation shall install, repair, alter, or extend any plumbing system within the City of Jefferson unless licensed. A current list of licensed plumbing contractors for the City of Jefferson may be found here: 2024 Plumbing Contractor List.

To apply for a Plumbing Contractor License, please complete, sign and submit the following application, to the City Plumbing Inspector, via email or postal mail at 320 E. McCarty St, Jefferson City, MO 65101.  2024 Plumbing Contractor License Application.  The fee for this license is currently $210, a current Certificate of Insurance, and minimum $5000 Surety Bond, is required as well.

Apprentice, Journeyman, and Master Licenses

To apply for an Apprentice License ($12), Journeyman Plumbing License ($105), or Master Plumbing License ($105), please complete, sign and submit the following application to the City Plumbing Inspector. This form may also be used to apply for the Journeyman or Master Plumbing Examination. Examination fees are not paid to, or processed by, the City of Jefferson.  2024 Plumbing License Application

ICC Exams currently accepted by the Board are:
G28 - Journeyman Plumber with Gas
G27 - Master Plumber with Gas
Both exams may be found by following the link below and selecting 'PMG' under the 'Category/Trade' drop down list:  ICC Exam Catalog
Additional answers about the ICC testing process may be found here: ICC Contractor/Trade Exam FAQ

To apply for multiple Apprentice Licenses at once, please complete and submit the following application: 2024 Apprentice Plumbing License Application Form. The Apprentice License fee is currently $12.00; checks payable to the City of Jefferson.