Transfer Your Plumber License to South Carolina: Reciprocity & Endorsement (2026)
Last verified: 2026-07-21 · source: South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission ↗
Conditionally — South Carolina recognizes plumbing licenses from 2 named partner states (North Carolina, Mississippi). A plumber licensed by examination and in good standing there applies to the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission under the agreement; South Carolina waives only the technical (Residential Plumbing) portion of its exam for an applicant who holds a residential plumbing license obtained BY EXAMINATION, current and in good standing, in North Carolina or Mississippi — the only two states with a residential-plumbing Exam Waiver Agreement (grandfathered or waived-in licensees do not qualify); every applicant, including waiver applicants, must still pass the South Carolina Business Management and Law exam, and all others must pass both the Residential Plumbing technical exam and the Business/Law exam. From any other state you qualify and sit South Carolina's journeyman exam as a new applicant. Application fee: $135–$355 ($135 application processing fee plus a $220 license fee due after passing the exam(s), both payable to LLR-Residential Builders Commission; PSI exam fees paid separately to PSI; $10,000 surety bond required if work exceeds $5,000; renews biennially by June 30 of odd years).
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Verdict
Reciprocity with 2 states
Read South Carolina's reciprocity as a named list, and the list is the rule: if you were licensed by examination in a state on it and your license is in good standing, the streamlined track below applies; if not, no amount of field experience substitutes for South Carolina's exam. Two cautions. The agreement is directional — it describes the states South Carolina recognizes, which tells you nothing about the reverse move — and it typically excludes licenses that were grandfathered in rather than earned by examination. Confirm both against the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission before you rely on the waiver.
South Carolina has no 'journeyman' plumber title; the state-level individual residential plumber credential is the Residential Specialty Contractor (Plumbing) license issued by the Residential Builders Commission (RBC), which licenses the individual (not a company) and requires one year of experience plus PSI trade and business/law exams. The RBC Exam Waiver Agreement waives only the technical exam and only for licensees examined in North Carolina or Mississippi. Commercial plumbing above the residential scope is licensed separately by the SC Contractor's Licensing Board as a Mechanical Contractor with a Plumbing (PB) classification; that board waives the plumbing trade exam only for licensees who passed the Ohio plumbing exam, the Tennessee CMC/CMC-A exam, or the Municipal Association of SC (MASC) Master Plumbing exam, and all such applicants must still pass the SC Business Management and Law for Commercial Contractors exam. A holder of a SC Mechanical Contractor (plumbing, by exam) license or of the MASC Master Plumbing exam may obtain the RBC residential plumbing license without the residential technical exam. The RBC runs a TransUnion credit check and screens the SC Public Index and sex-offender registries; a 'yes' to a criminal or judgment question can require a Commission appearance. No national plumber database exists, so verification_system_url is the SC LLR public license lookup.
South Carolina requirements at a glance
| Exam | South Carolina waives only the technical (Residential Plumbing) portion of its exam for an applicant who holds a residential plumbing license obtained BY EXAMINATION, current and in good standing, in North Carolina or Mississippi — the only two states with a residential-plumbing Exam Waiver Agreement (grandfathered or waived-in licensees do not qualify); every applicant, including waiver applicants, must still pass the South Carolina Business Management and Law exam, and all others must pass both the Residential Plumbing technical exam and the Business/Law exam |
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| Additional requirements |
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| Fees | $135–$355 ($135 application processing fee plus a $220 license fee due after passing the exam(s), both payable to LLR-Residential Builders Commission; PSI exam fees paid separately to PSI; $10,000 surety bond required if work exceeds $5,000; renews biennially by June 30 of odd years) |
| Processing time | 3–6 weeks (Commission staff review applications within 15 business days; allow another 15 business days if additional information is requested; license issued within 3 business days after approval) |
Step by step
- Confirm South Carolina's current requirements on the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission website — rules change.
- Submit the reciprocity/endorsement application to the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission (application linked on this page).
- Arrange license verification from your current state via the verification system.
- Document one year of hands-on residential plumbing experience under a licensed residential plumber (or appropriately licensed professional), gained within the preceding five years.
- Pass the South Carolina Residential Business Management and Law exam (PSI) — required even when the technical exam is waived.
- For the exam waiver, hold a residential plumbing license obtained by examination in North Carolina or Mississippi and submit an out-of-state license verification.
- Submit a full credit report; post a $10,000 surety bond if performing work exceeding $5,000 (labor plus materials).
- Pay the fees ($135–$355 ($135 application processing fee plus a $220 license fee due after passing the exam(s), both payable to LLR-Residential Builders Commission; PSI exam fees paid separately to PSI; $10,000 surety bond required if work exceeds $5,000; renews biennially by June 30 of odd years)) and allow 3–6 weeks (Commission staff review applications within 15 business days; allow another 15 business days if additional information is requested; license issued within 3 business days after approval).
Official links
Coming from a specific state?
Direction matters — these guides cover the exact move into South Carolina:
Frequently asked questions
Does my plumbing license transfer to South Carolina?
Conditionally — South Carolina recognizes plumbing licenses from 2 named partner states (North Carolina, Mississippi). A plumber licensed by examination and in good standing there applies to the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission under the agreement; South Carolina waives only the technical (Residential Plumbing) portion of its exam for an applicant who holds a residential plumbing license obtained BY EXAMINATION, current and in good standing, in North Carolina or Mississippi — the only two states with a residential-plumbing Exam Waiver Agreement (grandfathered or waived-in licensees do not qualify); every applicant, including waiver applicants, must still pass the South Carolina Business Management and Law exam, and all others must pass both the Residential Plumbing technical exam and the Business/Law exam. From any other state you qualify and sit South Carolina's journeyman exam as a new applicant. Application fee: $135–$355 ($135 application processing fee plus a $220 license fee due after passing the exam(s), both payable to LLR-Residential Builders Commission; PSI exam fees paid separately to PSI; $10,000 surety bond required if work exceeds $5,000; renews biennially by June 30 of odd years).
Will I have to take South Carolina's plumbing exam?
South Carolina waives only the technical (Residential Plumbing) portion of its exam for an applicant who holds a residential plumbing license obtained BY EXAMINATION, current and in good standing, in North Carolina or Mississippi — the only two states with a residential-plumbing Exam Waiver Agreement (grandfathered or waived-in licensees do not qualify); every applicant, including waiver applicants, must still pass the South Carolina Business Management and Law exam, and all others must pass both the Residential Plumbing technical exam and the Business/Law exam.
Which states does South Carolina have plumbing reciprocity with?
North Carolina, Mississippi (2 states, verified 2026-07-21 against the South Carolina Department of Labor, Licensing and Regulation — Residential Builders Commission). The waiver applies only if you were licensed by examination there; plumbers from every other state qualify as new applicants.
What will licensing in South Carolina cost an out-of-state plumber, and how long does it take?
$135–$355 ($135 application processing fee plus a $220 license fee due after passing the exam(s), both payable to LLR-Residential Builders Commission; PSI exam fees paid separately to PSI; $10,000 surety bond required if work exceeds $5,000; renews biennially by June 30 of odd years); processing 3–6 weeks (Commission staff review applications within 15 business days; allow another 15 business days if additional information is requested; license issued within 3 business days after approval).
Sources
Primary sources only — official boards and compact commissions. Data last verified 2026-07-21.
- SC Residential Builders Commission — Residential Plumbing Contractor FAQ (fees, NC/MS technical-exam waiver, bond, renewal) ↗ (accessed 2026-07-21)
- SC Contractor's Licensing Board — Reciprocity/Waiver Agreements (commercial plumbing PB: Ohio, Tennessee CMC/CMC-A, MASC Master Plumbing) ↗ (accessed 2026-07-21)
Reviewed by Billy Reiner, Editor · verified against primary sources 2026-07-21
How we verify · All sources · spot an error? [email protected]