The essentials
- Licensing authoritySouth Carolina Department of Labor, Licensing and Regulation (LLR) — Residential Builders Commission (residential) and Contractor's Licensing Board (commercial mechanical); trade cards via the Mechanical Trades Certification Program — official site
- Statewide?Yes — South Carolina licenses at the state level
- Experience requiredNo statewide journeyman hour requirement; the Residential Specialty Plumbing Contractor license requires one year of documented experience within the last five years
- ExamPSI — plumbing technical examination (65 multiple-choice questions, 67.7% to pass) plus the Residential Business Management and Law examination
- Renewal & CEMechanical Contractor licenses expire October 31 of odd-numbered years (biennial); residential license renewal cycle — verify with LLR
- Bond / insuranceContractor's Licensing Board applicants must show a financial statement meeting the net worth/working capital minimum for their license group, or file a surety bond in that same amount
- ReciprocityNone we could confirm
License classes in South Carolina
South Carolina issues the following classes. Getting the class right matters — several states have residential-only or limited-scope licenses that will not cover commercial or multifamily work:
- Residential Specialty Plumbing Contractor — Residential Builders Commission license required for residential plumbing installation/repair over $200
- Mechanical Contractor with Plumbing (PB) classification — Contractor's Licensing Board license for commercial plumbing work
- Journeyman / Master Plumber trade certification — issued through the Mechanical Trades Certification Program rather than by LLR
Experience and training
No statewide journeyman hour requirement; the Residential Specialty Plumbing Contractor license requires one year of documented experience within the last five years
One thing worth knowing regardless of state: the hours only count if they were logged properly at the time. Several boards require you to register as an apprentice before the clock starts, and hours worked while unregistered are simply gone. If you are early in the trade, get the registration paperwork right now rather than reconstructing it four years later.
The exam
PSI — plumbing technical examination (65 multiple-choice questions, 67.7% to pass) plus the Residential Business Management and Law examination
Renewal and continuing education
Mechanical Contractor licenses expire October 31 of odd-numbered years (biennial); residential license renewal cycle — verify with LLR
Letting a license lapse is more expensive than it looks. Some states allow a short grace period with a penalty fee; others treat a lapsed license as forfeited and make you retest from scratch. Put the renewal date in your calendar with a 90-day warning, not a 7-day one.
Insurance and bonding
Contractor's Licensing Board applicants must show a financial statement meeting the net worth/working capital minimum for their license group, or file a surety bond in that same amount
Separately from whatever the state requires: Pipe Well requires every plumber on the network to carry current general liability insurance and to upload the certificate before the first appointment is sent.
Working across state lines
We could not confirm any published reciprocity agreement for South Carolina. That does not always mean there is none — several states evaluate out-of-state licenses case by case, or let you sit for the exam on the strength of a license held elsewhere. If you are relocating, call the board and ask specifically about endorsement or credential review rather than assuming you start over.
What plumbers actually get wrong here
South Carolina does not license individual journeyman plumbers to contract independently — the license sits at the contractor level, while journeyman/master trade cards come from the Mechanical Trades Certification Program (run by the Municipal Association of SC, with Carolinas AGC taking over management effective January 1, 2026) and many municipalities require those cards to pull permits. A current SC Mechanical Contractor with the PB classification held by exam for a year or more can waive the residential technical exam.
Once you are licensed: getting the work
A license gets you legal. It does not get you a full schedule. The usual next step is buying leads — $40 to $85 for a contact that three or four other shops bought at the same moment, which at a realistic 10–20% close rate works out to somewhere between $300 and $1,000 for every job you actually book, plus the unpaid hours spent chasing the ones that go nowhere.
Pipe Well works the other way round. We book appointments, not leads, and we handle everything up to the moment you knock on the door: the advertising, the phone call, qualifying the job, getting the address and access details, and agreeing a date and time window with the homeowner. What reaches your phone is a scheduled appointment — name, address, time window and what is wrong. You reply YES and it is yours.
What it costs
Nothing to join. No subscription, no per-lead charge. You do the job, you set your own price, and you collect payment from the customer directly. Then Pipe Well is paid 50% of the job after your documented materials come off the top:
(amount collected − documented materials) × 50%
| Collected | Materials | Net | Pipe Well | You keep |
|---|---|---|---|---|
| $400 | $40 | $360 | $180 | $220 |
| $1,200 | $520 | $680 | $340 | $860 |
| $2,800 | $800 | $2,000 | $1,000 | $1,800 |
| $8,500 | $3,200 | $5,300 | $2,650 | $5,850 |
Due within 48 hours of the customer paying you. If they never pay, you owe nothing. And look honestly at that last row — on a big repipe our share is a large number. If your book is already full of $8,500 jobs you are better off filling that capacity yourself. We are worth most to a shop with open capacity it cannot currently fill.
Apply free → Run your own numbersQuestions plumbers ask about licensing in South Carolina
Do you need a license to do plumbing work in South Carolina?
Yes. South Carolina Department of Labor, Licensing and Regulation (LLR) — Residential Builders Commission (residential) and Contractor's Licensing Board (commercial mechanical); trade cards via the Mechanical Trades Certification Program is the licensing authority for South Carolina. South Carolina does not license individual journeyman plumbers to contract independently — the license sits at the contractor level, while journeyman/master trade cards come from the Mechanical Trades Certification Program (run by the Municipal Association of SC, with Carolinas AGC taking over management effective January 1, 2026) and many municipalities require those cards to pull permits. A current SC Mechanical Contractor with the PB classification held by exam for a year or more can waive the residential technical exam.
Who issues the plumbing license in South Carolina?
South Carolina Department of Labor, Licensing and Regulation (LLR) — Residential Builders Commission (residential) and Contractor's Licensing Board (commercial mechanical); trade cards via the Mechanical Trades Certification Program. The official site is https://llr.sc.gov/res/resplumber.aspx.
What license classes exist in South Carolina?
Residential Specialty Plumbing Contractor — Residential Builders Commission license required for residential plumbing installation/repair over $200. Mechanical Contractor with Plumbing (PB) classification — Contractor's Licensing Board license for commercial plumbing work. Journeyman / Master Plumber trade certification — issued through the Mechanical Trades Certification Program rather than by LLR.
How many hours of experience do you need for a South Carolina plumbing license?
No statewide journeyman hour requirement; the Residential Specialty Plumbing Contractor license requires one year of documented experience within the last five years
Who administers the South Carolina plumbing exam?
PSI — plumbing technical examination (65 multiple-choice questions, 67.7% to pass) plus the Residential Business Management and Law examination
How often does a South Carolina plumbing license renew?
Mechanical Contractor licenses expire October 31 of odd-numbered years (biennial); residential license renewal cycle — verify with LLR
Can I get booked plumbing appointments in South Carolina once I am licensed?
Yes. Pipe Well Plumbing books customer appointments in South Carolina and texts them to licensed plumbers whose service radius covers the address. Joining is free — no subscription and no per-lead fee. Pipe Well is paid 50% of the job after your documented material costs are deducted, and only after the customer has paid you.
Booked appointments in South Carolina
Set your ZIP and a service radius of at least 30 miles and we will match appointments inside it. Free to join.
Join Free → Plumbing jobs in South CarolinaPlumbing license requirements in other states
Compiled from South Carolina Department of Labor, Licensing and Regulation (LLR) — Residential Builders Commission (residential) and Contractor's Licensing Board (commercial mechanical); trade cards via the Mechanical Trades Certification Program published materials, last reviewed July 2026. Where a figure could not be verified against a primary source we have said so rather than estimate it. Spotted something out of date? Email info@pipewellplumbing.com and we will correct it.