Missouri Plumbing Licenses

Missouri plumbing licenses are not regulated at the state level. You will need to check with your local municipality to determine what requirements you will need to meet to work legally in your area.

Frequently Asked Questions

Missouri Plumbing FAQs

Getting Licensed

What plumbing codes are used in Missouri?

According to the ICC, Missouri has adopted the 2009 International Plumbing Code.

View all state adopted codes here on the ICC website.

The codes used in your area may differ, please check with your local municipality.

How do I get licensed as a plumber in Missouri?

The state of Missouri does not regulate plumbing licenses. You will need to check with your local regulatory bodies in order to find out what, if any, licensing requirements there are for plumbers in your area.


Please Note: Provided here is a list of several municipalities known to regulate plumbing in Missouri.

This list is provided as a convenience only. It is by no means an exhaustive list, and if you do not see your local jurisdiction listed, that does not mean they do not require you to be licensed.

Please contact your local city or county government to determine what licensing rules you need to follow.

Cape Girardeau
Development Services Department

401 Independence Street
Cape Girardeau, MO 63703
(573) 339-6327

Public Works Department

623 E Seventh
Carthage, MO 64836
(417) 237-7010

Building & Site Development, Trade Licensing

701 East Broadway, 3rd Floor
PO Box 6015
Columbia, MO 65205
(573) 874-7474

Planning & Protective Services, Contractor Licensing

320 E McCarty Street
Jefferson City, MO 65101
(573) 634-6451

Kansas City
City Planning & Development, Contractor Licensing

414 East 12th Street
5th Floor, City Hall
Kansas City, MO 64106
(816) 513-1500 ext 6

Permits & Applications

5200 Shrewsbury Avenue,
Shrewsbury, MO 63119
(314) 647-5795

Occupational Licensing

107 West Main Street
Smithville, MO 64089
(816) 532-3897

St. Charles County
Community Development, Contractor Licensing

201 N Second Street, Suite 410
St. Charles, MO 63301
(636) 949-7345

St. Louis County
Board of Plumbing Examiners

41 South Central, 6th Floor
St. Louis, MO 63105
(314) 615-3741

Professional Development FAQs

What is professional development?

The plumbing industry is often changing. As a professional plumber, it is important to keep your industry knowledge up to date so you can make practical decisions for your business. Professional development courses are designed to help you sustain and improve your plumbing industry knowledge.

Whether you are looking for information on new avenues for your business, want to brush up on best practices, or are just interested in learning about a particular topic, professional development is for you!

Is professional development the same as continuing education?

No. Unlike continuing education, which is required by your licensing body to maintain your license, professional development is not required and is considered supplemental learning.

About the Courses

Once I order a course, how long before I can start?

You may begin immediately! Simply click the Login button in the upper right-hand corner on your desktop or in the upper-right menu on mobile. Once you've entered your login and password, you will be taken to your courses. Follow the instructions and enjoy!

Once I start an online course, can I start and stop it at any time?

Our courses are available online, 24/7, and you can log in and log out at any time during the course. If you are going to be away from your computer for more than 10–15 minutes, we recommend that you log out. When you log back in, you will be able to re-enter the lesson you were last in.

How long do your continuing education courses take to complete?

Continuing education requirements vary by state. Each course lists a minimum number of credit hours required to complete the course.

How long do your exam prep courses take to complete?

It depends on your learning style and comfort level with the topics we cover. There is no set time for completing exam prep courses — you go at your own pace!

Many plumbers like to re-watch materials, while others like to re-take the practice tests. Our recommendation is to go through the course as many times as you need to be comfortable with the material and any applicable reference books. The more familiar you are with the materials, the better you will do on your exam!

How long do I have access to my courses?

After you purchase a course, you have unlimited access for six months. If you need additional time, please contact our offices to arrange an extension (please note: a fee may apply).

Do your courses have tests?

It depends on course type and location. Most continuing education courses include quizzes.

Exam prep courses have a short quiz at the end of each lesson and a longer practice test at the end of the course. These quizzes and tests are there to help you practice taking an exam and identify areas you may wish to review more.

If I fail a practice test, do I have to take it again?

No. Practice tests are just that: for practice. You will have the opportunity to retake the practice tests until you do pass. The practice tests are there to help you get used to the process of using your reference materials and finding the correct answers during an exam. If you don't pass on the first try, take the time to note what sections of the material you need to review.

Once I complete a course, can I still go back and review the lessons and quizzes?

You can review the lessons and quizzes at any time during the six months you have access to the courses.