Plumbing License Requirements in Missouri: Quick Reference Table
Requirement | Details |
|---|---|
License Type | Journeyman Plumber, Master Plumber, Journeyman Drainlayer, Master Drainlayer |
Regulating Agency | Missouri Division of Professional Registration (DPR), Plumbing Board |
Experience | Master: 3 years as journeyman, age ≥25; Journeyman: 5 years as apprentice, age ≥21 |
Exam | Required (details not published; reexamination required on lapse or failure) |
Renewal | Annually via MOPRO portal |
Continuing Education | No CE required by statute |
Fees | Journeyman $2; Master $10 (as of 2024, verify at RSMo § 341.180) |
Bond | Master: $2,000 surety bond |
Official Links | DPR Home, MOPRO Portal, Bond Statute |
Who Needs a Plumbing License in Missouri?
Anyone performing or supervising plumbing work in Missouri may need a state license if the jurisdiction is governed by the state plumbing code. The plumbing license requirements in Missouri apply to both individuals and businesses providing plumbing services in these areas.
In Missouri, state-level licensing is triggered in municipalities or counties that have adopted the state plumbing statutes found in RSMo § 341.100. Local boards may issue their own licenses, or may rely on state recognition. If you work only as an employee under a licensed master plumber, you may not need an individual license but should check local regulations.
Above all, if you supervise, pull permits, or contract directly with consumers or general contractors, you must meet all plumbing license requirements in Missouri for your classification. Both journeyman and master levels serve distinct legal and practical roles on job sites.
Plumbing License Types and Focus Areas
The state recognizes two primary plumbing license levels plus drainlayer parallels. Each scope of work is carefully defined in Missouri statutes, and it is critical to select the right license before you apply.
Journeyman Plumber: Performs installation or repair of plumbing systems under the direct supervision of a licensed master plumber. May not pull permits or supervise other plumbers independently.
Master Plumber: May supervise journeyman plumbers and apprentices, directly pull permits, contract work, and take legal responsibility for compliance. A master plumber must also post a bond as a condition of licensure.
Journeyman Drainlayer: Installs drainage waste systems under a master drainlayer. Requires at least one year of supervised experience.
Master Drainlayer: Supervises and contracts for drainlaying, responsible for legal compliance, and must file a $2,000 surety bond.
Apprentices are not a licensed class under the state system, but local boards may require apprentice registration. Verify local requirements for documentation of hours worked toward your journeyman application.
How to Meet Plumbing License Requirements in Missouri
To satisfy plumbing license requirements in Missouri, you must complete several concrete steps. Every applicant must use the state’s MOPRO online system and provide all required documentation.
Register for an account on the MOPRO portal.
Select the appropriate license type (journeyman or master plumber or drainlayer).
Complete the electronic application, including personal and employment details.
Upload proof of work experience (apprenticeship or journeyman years, as required by your classification), including supervisor verification for hours accumulated.
For master plumber or master drainlayer: Prepare and upload a $2,000 surety bond form with a licensed corporate surety. The county counselor must approve this bond.
Pay the application fee through the portal ($2 for journeyman, $10 for master, confirmed as of 2024, verify at RSMo § 341.180).
Await application review. Watch for requests for more documents or clarifications via MOPRO notifications.
If required, sit for the licensing examination (details on exam are not publicly provided by the board; further MOPRO or direct inquiry may be necessary).
Upon passage and approval, receive your license card and add your information to the state registry.
Local jurisdictions may also require a separate application process, especially for city/county-issued licenses and permits. For example, the City of Columbia uses a local plumbing code application form. Always verify local requirements in addition to state plumbing license requirements in Missouri.
Application Requirements
If you are preparing your application, you must meet all plumbing license requirements in Missouri for your license class. Requirements cover age, experience, surety bond, and supporting documentation at minimum.
Experience and Age
Journeyman Plumber: Minimum age 21. You must show five years of work as an apprentice supervised by a master plumber.
Master Plumber: Minimum age 25. You must document at least three years as a licensed journeyman plumber before applying as a master plumber.
Journeyman Drainlayer: Minimum of one year in supervised drainlaying.
Master Drainlayer: Three years as a licensed journeyman drainlayer and minimum age 25.
Bond and Insurance
Every master plumber and master drainlayer applicant must file a $2,000 surety bond issued by a corporate surety authorized in Missouri. The bond protects the public and indemnifies individuals, counties, and any entity damaged by negligent or faulty work. The bond form must be approved by the county counselor. Journeyman plumbers and journeyman drainlayers do not need to file this bond at the state level, but some municipalities may impose local bond or insurance requirements.
Other Supporting Documents
Supervisor-signed verification of hours or letters documenting on-the-job experience (these may be uploaded as scanned PDFs via MOPRO).
Government-issued photo ID, age verification, and current contact information.
No background check, fingerprinting, or federal certifications are required by statute (as of 2024, verify at Missouri Division of Professional Registration site).
Applications are not considered complete until all plumbing license requirements in Missouri are appropriately documented and submitted.
Missouri Plumbing License Exams
Exams are a critical part of plumbing license requirements in Missouri. Statute RSMo § 341.180 requires a licensing exam and mandates reexamination if you fail or if your license lapses, but it does not publish specifics.
The exam is administered or authorized through the DPR’s MOPRO system. However, the format, content outline, question numbers, reference materials, and minimum passing score are not specified in public guidance or applicant bulletins. If you qualify and are required to test, you should receive exam instructions directly via your MOPRO portal account.
For the most current information about exam scheduling, study resources, or special accommodations, you must inquire directly with the Missouri DPR or monitor your MOPRO account notifications. Always verify plumbing license requirements in Missouri with the board before scheduling an exam.
Fees for Plumbing License Requirements in Missouri
Exact plumbing license fees in Missouri are set by statute. They are among the lowest of any state, but you must confirm they are current before applying or renewing.
Journeyman Plumber/Drainlayer: $2 application fee (as of 2024, verify at RSMo § 341.180).
Master Plumber/Drainlayer: $10 application fee (as of 2024, verify at RSMo § 341.180).
Renewal Fees: Identical to original application ($2 for journeyman, $10 for master, as of 2024).
Bond Premium: The surety company sets this cost, but the required bond face value is $2,000 (refer to RSMo § 341.200).
Late Fees: No separate late renewal fee, but if you lapse, you must reapply and pass the exam again.
If you need a copy of the official fee schedule or have questions about current amounts, always verify at the Missouri Division of Professional Registration official website.
Renewal and Continuing Education Requirements
Missouri plumbing licenses must be renewed annually through the MOPRO portal. Renewal fees match the original application fee. There are no required continuing education (CE) hours at the state level as of 2024.
Renewal Procedures
Access your MOPRO account, select your expiring license, and follow prompts for annual renewal.
Pay the appropriate renewal fee ($2 for journeyman, $10 for master, as of 2024).
Update any changes to your contact, bond, or employment information.
Lapse and Reinstatement
If you fail to renew before the expiration date, your license status lapses. You must submit a new application and pass the relevant licensing exam again. Missouri statutes do not allow for late renewal fees or grace periods under RSMo § 341.180.
Continuing Education
As of this writing, no continuing education (CE) is required by Missouri plumbing license requirements. Local boards, unions, or employers may encourage ongoing training, but it is not a statutory condition for renewal at the state level. Always double-check local requirements before skipping any education programs.
Reciprocity: Plumbing License Requirements in Missouri for Out-of-State Plumbers
Plumbing license reciprocity in Missouri is limited. Under state law (RSMo § 324.009), Missouri may waive its exam or experience requirements for applicants who hold a “substantially similar” plumbing license from another state. However, Missouri has no published, plumbing-specific formal reciprocity agreements as of 2024.
If you are a currently licensed plumber from another state and want to work in Missouri, you must apply via the MOPRO portal, submit copies of your out-of-state license, and request the board to consider equivalency. The board has discretion to waive testing or experience if the out-of-state license is found equivalent, but this is handled case by case. There is no guarantee of automatic approval, and you should plan for a possible exam or experience verification.
Always verify reciprocity and endorsement options with the Missouri Division of Professional Registration and review the exact plumbing license requirements in Missouri applicable to your background.
Official Links
Missouri Division of Professional Registration (DPR) homepage
MOPRO login and online services (apply, renew, lookup)
City of Columbia Plumbing Code Application Form (example)
St. Louis City Plumbing Permit Instructions (local requirements)
