South Carolina Plumber License Requirements (2026)

South Carolina licenses plumbing contractors through the South Carolina Mechanical Contractors Licensing Board (SCMCB) under SC Code Title 40 Chapter 11 Article 3. Any plumbing work valued at $5,000 or more must be performed by an SCMCB-licensed plumbing contractor. Applicants designate a qualifying party with at least three years of practical plumbing experience, pass the PSI SC Plumbing Contractor examination and the SC Business Management and Law exam at 70%, and file a financial statement matching one of five monetary groups. South Carolina does not license individual journeyman plumbers at the state level; only the contracting business is credentialed, though some municipalities maintain local registrations.

Governing Authority

Under South Carolina Code of Laws Title 40 Chapter 11 Article 3 (Mechanical Contractors), South Carolina Mechanical Contractors Licensing Board (SCMCB) is the body that issues this license and enforces compliance with it. The South Carolina Mechanical Contractors Licensing Board, also under LLR, licenses HVAC, refrigeration, packaged equipment, gas (fuel piping), plumbing, and electrical contractors. The board is separate from the general Contractor's Licensing Board and uses its own exams, classifications, and financial groups.

Official portal: https://www.llr.sc.gov/mech/
Address: Synergy Business Park, Kingstree Building, 110 Centerview Drive, Columbia, SC 29210
Phone: (803) 896-4696

Eligibility Requirements

To qualify, an applicant must have reached age 18 and hold a valid Social Security Number. No South Carolina residency requirement; out-of-state entities must designate an SC registered agent.

Good moral character

The SCMCB reviews moral character on every qualifying party. Felonies and prior license revocations are evaluated individually.

Background investigation

Mandatory criminal history disclosure on the application.

Disqualifying conditions

Contracting without a license in any state
Felony theft, fraud, or financial crimes within the past ten years
Prior plumbing or mechanical license revocation by another jurisdiction

Experience & Education Matrix

The applicant must document and verify at least three years of practical plumbing construction experience for the qualifying party, documented through verified employment under licensed plumbing contractors. Keep payroll, tax, project, or supervisor records to support the claim, as the board can request proof for any period within its lookback window.

Accepted proof of experience or eligibility

SCMCB Experience Verification Form signed by each prior employer
W-2 statements, 1099 records, or payroll documentation covering the qualifying period
Project list with addresses, scopes, and owner contact information
Approved plumbing apprenticeship completion certificate (where applicable)

Education substitution

An accredited plumbing technology or mechanical engineering degree may substitute for up to one year of the experience requirement at Board discretion.

Examination Structure

PSI Services LLC under contract to SC LLR runs the examination for this credential. Issuance is contingent on passing every part below:

SC Business Management and Law Examination — 50 questions, 140 minutes, passing score 70%
PSI SC Plumbing Contractor Trade Examination — International Plumbing Code and SC plumbing rules — 100 questions, 300 minutes, passing score 70%

Examination fee: $110 per PSI exam part paid on the day of testing.

Retake policy: Failed parts may be re-taken individually after a 30-day waiting period by paying a new $110 fee. Applications remain valid for one year.

Insurance & Financial Security

The cited state source set does not require a contractor license surety bond for this credential. Contractors should still confirm project-specific bond, permit-bond, or public-works bond requirements before bidding.

General liability

SCMCB does not impose a state-level general liability minimum. Most commercial owners contractually require $1,000,000/$2,000,000.

Workers' compensation

Workers' compensation is mandatory in South Carolina under SC Code Title 42 for any business with four or more employees.

Additional financial requirements

Required for every applicant and tied to the requested group: Group I up to $100,000, Group II up to $200,000, Group III up to $700,000, Group IV up to $1,500,000, Group V unlimited. CPA-reviewed for Groups II–III; audited for Groups IV–V.

Application and License Fees

Fee	Amount
Application (non-refundable)	$200
Examination	$220
Initial license	$200
Renewal (every 2 years)	$200

Maintenance & Renewal

Expect to renew the South Carolina Plumbing Contractor License (SCMCB) every 2 years. Renewal currently costs $200. South Carolina plumbing contractor licenses renew on a two-year cycle.

Continuing education: No continuing education required for SCMCB plumbing contractors at this time.

Downloadable Asset

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

Download the PDF roadmap →

Reciprocity and Endorsement

South Carolina does not accept the NASCLA Accredited Examination for this classification.

Reciprocal State	Accepted Exam	Conditions
North Carolina	Trade exam waived	Bilateral SCMCB–NC State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors reciprocity for active license holders in good standing.
Georgia	Trade exam waived	Bilateral SCMCB–Georgia Construction Industry Licensing Board reciprocity for active plumbing contractors.
Tennessee	Trade exam waived	Bilateral SCMCB–Tennessee Board for Licensing Contractors reciprocity for active plumbing contractors at equivalent monetary classification.

The SCMCB does not accept the NASCLA examination for plumbing contractors. The SC Business Management and Law exam is always required.

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

Step-by-Step Application Roadmap

Document the qualifying party experience. Three years of practical plumbing experience under licensed plumbing contractors.
Choose the financial group. Group I up to $100,000 per project through Group V unlimited.
Prepare the financial statement. CPA-reviewed for Groups II–III, audited for Groups IV–V.
Submit the SCMCB application. File with application fee, qualifying party designation, experience documentation, and financial statement.
Pass the PSI examinations at 70%. Both the SC Business Management and Law exam and the plumbing trade exam must be passed at 70% or better.
Provide insurance certificates. Workers' compensation for any business with four or more employees.
Receive the SCMCB license. The Board issues the license after exams and documentation are complete. Licenses renew every two years.

Pre-Submission Checklist

The items below are the ones worth confirming before the application is filed with SCMCB:

☐ SCMCB application with $200 fee and qualifying party designation
☐ Experience verification covering three years under licensed plumbing contractors
☐ Financial statement matching the requested group
☐ PSI SC Business Management and Law exam pass certificate at 70%+
☐ PSI SC Plumbing Contractor trade exam pass certificate at 70%+
☐ Workers' compensation certificate for any business with four or more employees
☐ Registered agent designation for out-of-state entities

Study and Reference Materials

What follows are the regulator-cited and commonly used preparation references for this trade. They appear here for convenience only; CLR takes no compensation for them.

International Plumbing Code (current SC-adopted edition) — International Code Council. Primary technical reference. Open-book at the PSI test center.
NASCLA Contractors Guide to Business, Law and Project Management — South Carolina edition — NASCLA. Primary reference for the SC Business Management and Law exam.
Plumbers Exam Preparation Guide — McGraw-Hill. Widely used by SC applicants for IPC calculation and fixture unit problems.

Common Filing Mistakes

Drawn from the board instructions and sources cited on this page, the pitfalls below are the ones most likely to slow down or sink a South Carolina Plumber application.

Filing with the wrong board

Plumbing contractors file with the SCMCB, not the general Contractor's Licensing Board. Applications submitted to the wrong board are rejected.

Underestimating the experience requirement

Three years of documented, verified experience under a licensed plumbing contractor is required. Hobbyist or unsupervised work does not count.

Studying the wrong IPC edition

South Carolina adopts the IPC on a delayed cycle. Confirm the current adopted edition with the SCMCB before purchasing study materials.

Skipping the SC Business Management and Law exam

Reciprocity waives only the trade portion. The SC-specific business and law exam is always required.

Choosing the wrong financial group

Operating outside the monetary limit of your group triggers disciplinary action. Upgrading requires a new financial statement and Board approval.

Other South Carolina Trade Licenses

CLR covers other South Carolina trades as well — the published guides below may be more relevant:

Frequently Asked Questions

When do I need a South Carolina plumbing contractor license?

Any plumbing work valued at $5,000 or more requires an SCMCB license under SC Code §40-11-20. Below that threshold, local building code and permitting still apply.

Does South Carolina license individual journeyman plumbers?

No. South Carolina credentials only the contracting business through the SCMCB. Individual workers are not licensed at the state level, though municipalities like Columbia and Charleston may maintain local registrations.

What plumbing code does South Carolina follow?

South Carolina adopts the International Plumbing Code (IPC) with state amendments. The PSI trade exam references the currently adopted edition.

Which states reciprocate plumbing licenses with South Carolina?

North Carolina, Georgia, and Tennessee maintain bilateral SCMCB reciprocity for active plumbing contractors in good standing. The SC Business Management and Law exam is always required.

How often does the South Carolina plumbing contractor license renew?

Every two years on the SCMCB renewal cycle. There is no continuing education requirement at this time.

Primary Sources

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

Verified 2026-04-14 · Next scheduled review 2026-07-13