*Red font in the legislation and regulation indicates changes from previous reporting

Missouri- HB 326 (Licensing)

Issue: Mechanical Contractor License

Affects:  Those who build pools/spas

Send comments to: Jennifer Hatfield, jhatfield@apsp.org

Summary:  This bill refers to the “Missouri Statewide Mechanical Contractor Licensing Act”. 

As stated in this bill, the definition for ‘mechanical contractor’ shall mean a person engaged in mechanical contracting per the ICC and NFPA 54, including the design, installation, maintenance, construction, alteration, repair and inspection of: domestic hot water heating, swimming pool heating, or process heating, etc. 

Applicants for statewide mechanical licenses shall satisfy the following requirements:

(1) Be at least twenty-one years of age;

(2) Provide proof of liability insurance in the amount of five hundred thousand dollars and post bond with each political subdivision in which he or she will perform work, as required by that political subdivision;

(3) Pass one of the following standardized and nationally offered mechanical assessment tests:

(a) International Code Council;

(b) Prometric; or

(c) North American Technician Excellence (NATE) certification; or a similar test that is administered by an independent professional testing agency not affiliated with any political subdivision or the state of Missouri and is approved by the division. The applicant shall pay for all costs associated with the examinations;

(4) Complete the application form provided by the division and pay any applicable application fees; and

(5) Have completed seven thousand five hundred hours of verifiable field experience in the mechanical industry or a bachelor's or further advanced degree in mechanical or civil engineering from an accredited college or university with a minimum of three years' verifiable experience directing and supervising at least one field employee. 

Any applicant for licensure who holds a valid and active business or occupational license as a mechanical contractor, master pipefitter, master plumber, or other license authorizing him or her to engage in mechanical contracting, who has seven thousand five hundred hours of verifiable field experience in the mechanical industry, and who is otherwise eligible for licensure shall be issued a statewide mechanical contractor license.

The division may issue a mechanical contractor license to any person who holds a current and active license to engage in the practice of a mechanical contractor or as a master pipefitter or master plumber issued by any other state, the District of Columbia, or territories of the United States that require standards for licensure, registration, or certification considered to be equivalent or more stringent than the requirements for licensure under sections 324.950 to 324.983. 

Furthermore, this measure states that political subdivisions shall not be prohibited from establishing  their own local electrical contractor's licenses, but must recognize a statewide license in lieu of a local license for the purposes of performing contracting work or obtaining permits to perform work with the political subdivision.


Any person operating as a mechanical contractor in a political subdivision that does not require the mechanical contractor to hold a local license, or who possesses a license required by a political subdivision, shall not be required to possess a statewide license to operate as a mechanical contractor in such political subdivisions.


Status: This bill has been referred to committee March 13, 2019. 

Bill: https://house.mo.gov/billtracking/bills191/hlrbillspdf/0927H.01I.pdf