Mississippi Plumbing License Requirements (2026)

Mississippi State Board of Contractors (MSBOC) licenses plumbing contractors. A commercial contractor or subcontractor needs the appropriate MSBOC license for commercial work over $50,000. A residential subcontractor performing plumbing work on residential construction or improvement must also be licensed by MSBOC; the Board’s current guidance says this residential-subcontractor requirement is not limited by project value. Local building officials and permit offices can impose additional requirements.

Regulatory Body

Mississippi State Board of Contractors (MSBOC) administers and enforces this credential under the authority of Mississippi Code Title 31, Chapter 3; Title 73, Chapter 59. Licenses commercial and residential contractors, including plumbing classifications; reviews applications, qualifying parties, financial documents, insurance, examinations, and renewals.

Official portal: https://www.msboc.us/
Address: 2679 Crane Ridge Drive, Suite C, Jackson, MS 39216
Phone: (601) 354-6161

Eligibility Requirements

This guide does not establish a minimum applicant age; confirm any age requirement with the issuing authority. Applicants must provide a Social Security Number. MSBOC licenses resident and nonresident applicants. Business entities must provide Mississippi Secretary of State good standing; individual/sole-proprietor applicants are excepted from that proof.

Good moral character

A qualifying party must make complete application disclosures. MSBOC states that a conviction does not itself preclude licensure, but failing to disclose required information can result in denial.

Background investigation

Use the current MSBOC application for required disclosures; do not assume a universal fingerprint or background-check process from the published guidance.

Experience and Education

There is no published year count for this credential in the cited sources. What actually controls eligibility is The qualifying party must document hands-on experience in the classification sought. MSBOC’s current application guidance requires detailed completed-project information and proof of employment; it does not publish the former generic four-year municipal pathway as a statewide rule..

Accepted proof of experience or eligibility

Current MSBOC commercial or residential application
Proof of employment for each qualifying party
Detailed completed-project experience for the requested classification
Reference letters and other documents required by the current application

Education substitution

Confirm any education credit directly with MSBOC; no statewide substitution formula is stated in the current guidance reviewed.

Exam Requirements

Testing provider or authority: Mississippi State Board of Contractors / its current testing process. The following examination requirements cover the pathways described in this guide; follow each part's classification, waiver, and local-scope conditions. Unpublished format details do not remove an examination requirement:

Mississippi Law and Business Management examination — question count: confirm with the authority, timing: confirm with the authority, passing score: confirm in the current candidate bulletin
Required Plumbing classification examination — question count: confirm with the authority, timing: confirm with the authority, passing score: confirm in the current candidate bulletin

Examination fee: MSBOC sends testing information after it receives a completed application. Confirm the current examination fee and bulletin before scheduling.

Retake policy: Follow the current MSBOC testing bulletin. Do not rely on the removed unsupported PSI question-count, time, score, or fee claims.

Insurance and Bonds

The cited materials impose no contractor license bond for this credential. Bear in mind that specific contracts, permits, or public works can still require their own bonds.

General liability

Commercial applicants and active commercial renewal applicants must provide a general-liability certificate. MSBOC states a commercial minimum of $300,000 per occurrence and $600,000 aggregate. Residential applicants must provide proof of coverage; the published guidance does not state a residential minimum.

Workers' compensation

Provide workers’ compensation coverage if required by law. MSBOC’s application guidance specifically calls for the certificate when the applicant has five or more employees.

Additional financial requirements

Commercial applicants need a CPA-reviewed financial statement showing at least $50,000 net worth for a major classification or $20,000 for a specialty classification. MSBOC’s commercial plumbing classification is a specialty classification.

Fee Schedule

Fee	Amount
Application	$50
Initial license	$400
Renewal (every year)	$100

To turn these board fees into a realistic year-one budget — bond premium, liability insurance, and exam prep included — open the cost calculator preloaded for Mississippi plumber.

Renewal and Continuing Education

Expect to renew the Mississippi Plumbing Contractor License every year. Renewal currently costs $100. MSBOC licenses are valid for one year and renew annually. Current commercial renewal is $400; residential renewal is $100. Confirm any local renewal obligation separately.

Continuing education: No statewide plumbing continuing-education requirement was identified in the current MSBOC sources reviewed.

Downloadable Asset

2026 Mississippi Plumber License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Reciprocity

Mississippi does not accept the NASCLA Accredited Examination for this classification.

Reciprocal State	Accepted Exam	Conditions
No formal bilateral reciprocity agreements identified.

Do not assume municipal or state reciprocity. MSBOC’s current application materials control any reciprocity or examination-waiver request.

Weighing more than one jurisdiction? The national hub compares published Plumber license requirements by state — exam, bond, fee, and experience thresholds side by side.

Plumber Licensing in Neighboring States

Contractors working near a state line, or weighing where to qualify first, should compare Mississippi's requirements against the bordering jurisdictions before committing to an application:

Alabama Plumber License Requirements — Alabama Master Plumber Certification and Company Registration
Arkansas Plumber License Requirements — Arkansas Master Plumber and Journeyman Plumber License
Louisiana Plumber License Requirements — Louisiana Master Plumber, Journeyman Plumber, and Plumbing Contractor
Tennessee Plumber License Requirements — Tennessee CMC-A Plumbing Contractor (LLP Limited Licensed Plumber for projects under $25,000)

Step-by-Step Application Roadmap

Identify the project type and scope. Commercial work over $50,000 requires the commercial license; residential plumbing subcontractors require MSBOC licensure regardless of project amount.
Choose the correct MSBOC classification. Use Commercial Plumbing for the applicable commercial scope or Residential Plumbing for residential plumbing work.
Designate a qualifying party. The qualifying party must be an owner, officer, responsible managing employee, or executive staff member and document qualifying experience.
Prepare application documents. Include the current application, experience/proof-of-employment materials, references, insurance, and business documents that apply.
Meet financial requirements if commercial. Submit the required CPA-reviewed statement; commercial specialty applicants must show the current net-worth minimum.
Pass required examinations. MSBOC says all applicants take Law and Business Management and may also need the classification trade examination.
Check the local building authority. Confirm local permits, code requirements, and any additional local credential before starting work.

Application Checklist

The most critical documents or confirmations the applicant should have in hand before filing with MSBOC:

Identify commercial or residential plumbing scope
Select the correct MSBOC plumbing classification
Designate a qualifying party and document relevant experience
Submit current application and required references/documents
Provide required insurance and commercial financial documents where applicable
Complete required examinations
Confirm local permits and requirements
Renew annually

Common Filing Mistakes

Working from the cited board instructions, here are the snags most likely to trip up a Mississippi Plumber filing.

Calling Mississippi plumbing “municipal only”

MSBOC licenses both commercial plumbing at the commercial threshold and residential plumbing subcontractors statewide.

Using the commercial threshold for residential subcontracting

Residential plumbing subcontractor licensure is not limited by project amount.

Selecting the wrong classification

Commercial Plumbing and Residential Plumbing are separate MSBOC classifications.

Skipping local permits

MSBOC licensure does not remove local building-permit or code requirements.

Study and Reference Materials

The references below are either cited by the board, used during the application, or standard preparation for the trade. They are listed purely for convenience — CLR earns no commission on any of them.

MSBOC classifications — Mississippi State Board of Contractors. Current scope descriptions for Commercial Plumbing and Residential Plumbing.
MSBOC license-application guidance — Mississippi State Board of Contractors. Current qualification, document, examination, insurance, and financial-statement guidance.

Other Mississippi Trade Licenses

Should the Plumber path not apply, these other Mississippi trade guides from CLR may help:

Frequently Asked Questions

Does Mississippi have a statewide plumbing license?

Yes, MSBOC licenses plumbing contractors. Commercial contractor and subcontractor work over $50,000 requires the commercial license, and residential plumbing subcontractors need MSBOC licensure regardless of project amount.

Do small residential plumbing jobs require state licensure?

For a residential plumbing subcontractor on a residential construction or improvement project, MSBOC says the state license is required regardless of the project amount. Check local requirements too.

Which classification applies?

MSBOC lists Commercial Plumbing as a specialty classification and Residential Plumbing as a residential classification. Confirm the scope with MSBOC before applying.

What are the current MSBOC fees?

The current fee schedule lists $50 residential application and $100 renewal; commercial application and renewal are $400, with $100 for each additional commercial classification.

Do local rules still apply?

Yes. MSBOC directs contractors to check with the local city or county authority for additional requirements.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

Verified 2026-09-04 · Next scheduled review 2026-12-03

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Corrections and presentation updates

2026-09-30: Corrected examination detection when format details are unpublished and updated the summary layout and requirements score. Source-check dates are unchanged.
2026-09-08: Shared template updated to distinguish unspecified eligibility requirements, retain cost qualifications, and use consistent headings. Source-check dates are unchanged by presentation updates.
2026-09-21: Local-only guides now use a compliance-focused structure and terminology instead of implying a statewide license application. Source-check dates are unchanged by this presentation update.