Confirm This Is the Right License for Your Work
Every state licensing board defines the exact project types, sizes, and trades that fall under each contractor classification. Review the scope below to make sure this license matches the work you actually do — then enroll in the seminar that prepares you for that exam the first time.
Contractors interested in a Missouri Plumbing & Hydronics license must contact the city/county they wish to work in to see what requirements are necessary.
Many licenses are granted on a city/county level. Contractors should check with the local codes office or official, to see what criteria and or testing they will have to meet in order to be licensed.