St. Louis County
Department of Public Works
The following documents are in a PDF format. If you do not have Adobe Acrobat Reader, please download a free copy. Acrobat Reader will allow you to view and print copies the applications and instructions.
To assist you with information on the new Mechanical Licensing Requirements, Sections 101A and 101B of the Mechanical Code have been compiled in a user friendly format. Please review the Mechanical Code Information on Licensing Requirements.
Listed below are the instructions and applications for the various mechanical licenses.
Application for Apprenticeship License
Application for Contractor License
Application for A.S.M.E. - N.B.B.P.V.I. Certified Contractor License
Application for Manufacturer/Manufacturer's Representative Restricted License