South Carolina · plumber licensing · verified July 2026
South Carolina plumber license requirements
The short answer
As of July 2026, South Carolina licenses plumbing at the contractor level only: the Contractor's Licensing Board (LLR) issues Mechanical Contractor licenses with a plumbing subclassification for commercial work over $10,000, and the Residential Builders Commission issues Residential Specialty Contractor, Plumbing licenses for residential work over $500. There are no state journeyman or master plumber licenses; individual workers gain experience as employees, and counties/municipalities may impose their own examinations only if the contractor has not already passed a commission-approved exam. Contractor licenses require PSI-administered technical and business/law exams and biennial renewal.
Do you need a license to work as a plumber in South Carolina?
South Carolina regulates this trade at the contractor level rather than licensing individual plumbers.
Classification 'hybrid' because the state licenses only contractors (commercial via CLB, residential via RBC); individual plumbers are not state-licensed, and counties/municipalities may require their own examination unless the contractor passed a commission-approved exam (S.C. Code 40-59-240(C)). Note the 2023 threshold change: mechanical contracting license now triggers above $10,000 (many secondary sources still say $5,000); the residential specialty threshold is $500 (older sources say $200). Exam candidates may take an exam only twice in 12 months, then once per 6 months (40-11-230); out-of-state licensees may qualify for exam waivers where the board has authorized agreements or equivalent exams (40-11-290), but no specific state list was published in the sources reviewed.
What licenses does South Carolina issue?
The SC Contractor's Licensing Board and SC Residential Builders Commission (SC Department of Labor, Licensing and Regulation) issues the credentials below for this trade. Boards often list further classes for specialties and business licenses; these are the ones this page covers.
Hours are what each class asks for on its own terms. Where a senior class shows fewer than a journeyman, the board is counting time served after the earlier license rather than from the start; the prerequisite column says which.
| License | On-the-job hours | Classroom hours | Exam |
|---|---|---|---|
| Mechanical Contractor - Plumbing subclassification (commercial) | not published | not published | Yes |
| Residential Specialty Contractor - Plumbing (residential) | not published | not published | Yes |
Source: SC Contractor's Licensing Board and SC Residential Builders Commission (SC Department of Labor, Licensing and Regulation) (scstatehouse.gov). Verified July 2026.
What exam does South Carolina require?
Plumbing technical examination (70% or better required). Administered by PSI (examination provider used by the SC Contractor's Licensing Board / LLR).
South Carolina Commercial Contractors Business, Law and Project Management examination (70% or better; commercial mechanical licensure). Administered by PSI.
How much does a South Carolina plumber license cost?
South Carolina sets its fees per license class rather than as one figure for the trade, so no single total would be true of every applicant. The published items are below exactly as the board sets them.
- Application fee$135
- Initial license feeset per license class
- Renewal fee (recurring)set per license class
How often do you renew, and what continuing education is required?
Renewal period: Biennial for Contractor's Licensing Board licenses (S.C. Code 40-11-250); Residential Builders Commission license periods are set by commission regulation
Continuing education: No continuing-education requirement found in the statutes or fee regulations reviewed for mechanical or residential specialty plumbing contractors; the Residential Builders Commission may impose CE by regulation (S.C. Code 40-59-230(B))
How does the apprenticeship route work?
South Carolina has no state apprentice/journeyman/master plumber tiers or state apprentice registration for plumbers. Qualifying experience is gained through employment: two years full-time within the previous five years qualifies an individual as a certified qualifying party for a commercial mechanical (plumbing) license after passing the exams.
Which states does South Carolina have license reciprocity with?
South Carolina does not license this trade at state level, so there is no state agreement to publish. Whether an out-of-state license helps is decided by the city, county or contractor board that issues the credential where you intend to work.
How does South Carolina compare to neighboring states?
Requirements stop at the state line, which matters if you live near one or expect to move. Here is what the neighboring states ask of the same trade.
| State | Journeyman hours | Licensing model |
|---|---|---|
| South Carolina | not published | Contractor level only |
| Georgia | not published | Statewide |
| North Carolina | not published | Statewide |
Source: state licensing boards. Verified July 2026.
Sources and verification
Every fact on this page traces to one of these
- S.C. Code of Laws Title 40, Chapter 11 - Contractors (40-11-30, -230, -240, -250, -260, -290)
- S.C. Code of Laws Title 40, Chapter 59 - Residential Builders and Specialty Contractors
- S.C. Code of Regulations Chapter 10 - LLR fee schedules (10-10 Contractor's Licensing Board; 10-38 Residential Builders Commission)
- S.C. Code of Regulations Chapter 29 - State Licensing Board for Contractors (29-1 examination classifications incl. plumbing)
- SC Contractor's Licensing Board (LLR) - board page confirming PSI examinations (read via archived copy)
Last verified July 2026. Found an error? Report it and it will be corrected and logged on the corrections page.
Other states with published requirements for this trade: South Dakota, Tennessee, Texas, Utah, Vermont, Virginia.
Price the whole path with the license cost estimator, or weigh earning against paying for school with the apprenticeship comparison. Back to plumbers overview.
Licensing requirements change between our verification sweeps. This page is informational only, so confirm current requirements with SC Contractor's Licensing Board and SC Residential Builders Commission (SC Department of Labor, Licensing and Regulation) before making decisions. Not legal advice.