Getting your South Carolina license starts here...
South Carolina splits contractor licensing between two boards: the Contractor’s Licensing Board for commercial general and mechanical work, and the Residential Builders Commission for residential projects over $5,000. Commercial contractors are grouped into five bid-limit tiers with rising financial requirements, while mechanical contractors face a separate five-tier structure covering HVAC, plumbing, and electrical trades. South Carolina accepts NASCLA exam credit for both Commercial Building and Electrical licensing, and extends reciprocity to license holders from ten neighboring states.
Contractor Licensing Inc. helps you determine the right classification, and Artisan Insurance Inc. secures your required bond.
South Carolina Contractor License Requirements & Application Help
South Carolina splits licensing between two boards: the Contractor's Licensing Board (CLB), which licenses commercial General and Mechanical Contractors across five bid-limit groups, and the Residential Builders Commission (RBC), which licenses residential builders on any project over $5,000. South Carolina also accepts the NASCLA exam for qualifying classifications.
Contractor Licensing Inc. helps you pick the right board, classification, and group, and secure your bond. See our full National Contractor Licensing guide for requirements in every state.
Quick Answer
- Commercial work is licensed by the CLB across 5 bid-limit groups; residential work over $5,000 is licensed separately by the RBC.
- CLB covers 20+ General Contractor classifications and 8 Mechanical Contractor classifications (electrical, plumbing, HVAC, and more).
- South Carolina accepts both the NASCLA Commercial Building exam and the NASCLA Electrical Contractors exam as trade-exam waivers.
- RBC licensure requires a $15,000 bond, $135 fee, and passing two exams within 12 months (up to 3 attempts).
- Reciprocity exists with 10 states, waiving only the matching technical exam — SC's Business, Law and Project Management exam is always required.
- CLB financial requirements scale from $10,000 working capital (Group 1) to $250,000 (Group 5, unlimited).
Commercial (CLB) vs. Residential (RBC)
Contractor's Licensing Board (CLB)
Licenses commercial General Contractors and Mechanical Contractors across five bid-limit groups. Covers larger commercial and infrastructure work, with financial requirements scaling by group.
Residential Builders Commission (RBC)
Licenses residential builders and specialty contractors for structures under three stories with a maximum of 16 units. Required for any residential project over $5,000 — an entirely separate application from the CLB.
General & Mechanical Contractor Classifications
General Contractor — 20+ Classes
Includes Building, Roofing, Concrete Paving, Highway, Masonry, Grading, Swimming Pools, Wood Frame Structures, and more, each licensable independently.
Mechanical Contractor — 8 Classes
Covers Electrical, Plumbing, Air Conditioning, Heating, Refrigeration, Boiler Installation, Lightning Protection, and Pressure/Process Piping.
Bid Limits by Group
General Contractor groups range from $100,000 (Group 1) to unlimited (Group 5); Mechanical Contractor groups range from $35,000 up to unlimited.
Group 1 Financials
$10,000 working capital or $20,000 net worth — or substitute a $7,000–$20,000 surety bond.
Group 5 Financials
$250,000 working capital or $350,000 net worth for unlimited General Contractor licensure — the top tier.
License Fee
Initial CLB licensure costs $350, regardless of classification or group selected.
NASCLA Acceptance & SC's Business & Law Exam
Every CLB applicant must pass the South Carolina Business Management & Law for Commercial Contractors Exam. Technical exam requirements vary by classification.
South Carolina accepts two national exams for applicants seeking multi-state licensure: the NASCLA National Commercial Building Contractor exam and the NASCLA Accredited Trade Examination for Electrical Contractors. A current, examination-based NASCLA certification waives the matching SC technical exam — the Business & Law exam is still required. As of January 1, 2026, Carolinas AGC (CAGC) is the SC Mechanical Trades Certification Program provider.
RBC Residential Builder Requirements
Any residential construction project over $5,000 requires an RBC license. Applicants need at least one full year of relevant work experience within the past five years, documented with affidavits and tax records, plus a recent credit report, government ID, and Social Security card.
- License fee: $135
- Two exams required — residential builder technical knowledge and business management/law — within 12 months, up to 3 attempts each
- $15,000 original surety bond form submitted after passing exams
- Scope limited to structures under three stories with a maximum of 16 units
South Carolina Contractor License Reciprocity
South Carolina recognizes exam-based out-of-state licenses from Alabama, Georgia, Louisiana, Mississippi, North Carolina, Ohio, Pennsylvania, Tennessee, Texas, and Utah, plus applicants holding current NASCLA-accredited certifications. Reciprocity requires your out-of-state classification to match a South Carolina equivalent and that it was earned by passing an exam — not through grandfathering. Reciprocity waives only the matching technical exam; the South Carolina Business, Law and Project Management exam is mandatory for everyone, regardless of reciprocity.
Become a South Carolina Qualifier
Already hold a CLB or RBC license? Get added to our list of qualifiers available to license businesses that need a qualifying party in South Carolina.
Join Our Qualifier NetworkSouth Carolina Contractor License FAQ
Do I need a contractor license in South Carolina?
Yes — CLB for commercial work above group bid limits, RBC for any residential project over $5,000.
What are South Carolina's contractor license groups?
5 groups each for General ($100K–unlimited) and Mechanical ($35K–unlimited) contractors, covering 20+ and 8 classifications respectively.
Does South Carolina accept the NASCLA exam?
Yes — both the NASCLA Commercial Building exam and NASCLA Electrical exam waive the matching SC technical exam.
What is the Residential Builders Commission?
A separate board licensing residential builders for projects over $5,000, requiring a $15,000 bond and two exams.
Does South Carolina have reciprocity with other states?
Yes, with 10 named states plus NASCLA — but only the technical exam is waived, not SC's Business & Law exam.
What are the CLB financial requirements?
$10,000 working capital (Group 1) up to $250,000 (Group 5) — or a surety bond substitute ranging $7,000–$350,000.
Contact
SC Dept. of Labor, Licensing and Regulation (LLR)
Contractor's Licensing Board & Residential Builders Commission
Columbia, SC
South Carolina Contractor Bonds
| Bond | Amount | |
|---|---|---|
| South Carolina — General Contractor License Group 1 | $20,000 | Apply Now |
| South Carolina — General Contractor License Group 2 | $60,000 | Apply Now |
| South Carolina — General Contractor License Group 3 | $150,000 | Apply Now |
| South Carolina — General Contractor License Group 4 | $250,000 | Apply Now |
| South Carolina — General Contractor License Group 5 | $350,000 | Apply Now |
| South Carolina — Mechanical Contractors License Group 1 | $7,000 | Apply Now |
| South Carolina — Mechanical Contractors License Group 2 | $15,000 | Apply Now |
| South Carolina — Mechanical Contractors License Group 3 | $30,000 | Apply Now |
| South Carolina — Mechanical Contractors License Group 4 | $60,000 | Apply Now |
| South Carolina — Mechanical Contractors License Group 5 | $300,000 | Apply Now |
| South Carolina — Registered Residential Specialty Contractor | $5,000 | Apply Now |
| South Carolina — Residential Specialty Contractor (HVAC, Plumber, or Electrician) | $10,000 | Apply Now |
| South Carolina — Manufactured Home Contractor | $5,000 | Apply Now |
| Charleston County, SC — Contractors License | $10,000 | Apply Now |
| Charleston County, SC — Contractors License | $5,000 | Apply Now |
| City of Columbia, SC — Contractor License | Varies | Apply Now |
| City of Dillon, SC — Contractor License | $5,000 | Apply Now |
| Lancaster, SC — General Repair Contractor | $5,000 | Apply Now |
Bond amounts scale directly with your CLB group or RBC classification, so match your bond to the exact license tier you hold. A few counties and cities — Charleston County, Columbia, Dillon, and Lancaster — layer on their own local bonds as well.
Ready to Get Your South Carolina Contractor License?
We help you choose the right board, classification, and group, apply your NASCLA or reciprocity credit, and secure the right bond.
Call 239-394-2300 Email UsRECIPROCAL STATES
Reciprocity / Technical Exam Waivers
South Carolina recognizes technical exam waiver agreements with several states and programs for specific classifications. Applicants must still pass the SC Commercial Business, Law & Project Management exam and meet all other licensing requirements. (See “Waiver Agreements with Other States”, Rev. 02/2025.) :contentReference[oaicite:7]{index=7}
- Alabama: Electrical; Heating & Air Conditioning; Refrigeration ⇄ SC Electrical; Air Conditioning; Heating; Refrigeration.
- Georgia: Unrestricted Electrical; Unrestricted Conditioned Air (post-6/30/1980) ⇄ SC Electrical; Air Conditioning; Heating. Note: GA does not accept SC waivers as of 4/15/2022.
- Louisiana: Multiple heavy/highway/building/mechanical exams ⇄ SC Building, Grading, Bridges, Asphalt Paving, Concrete Paving, Pipelines, Boring & Tunneling, Water & Sewer Lines, Water & Sewer Plants, Pressure & Process Piping (per chart).
- Mississippi: Building; Electrical ⇄ SC Building; Electrical.
- North Carolina: Electrical (Limited/Intermediate/Unlimited); Roofing; Building; Public Utilities (incl. Water & Sewer Lines/Plants); Grading; Highway (pre-4/1/1999); Plumbing Class 1; Heating Groups ⇄ SC Electrical; Specialty Roofing; Building; Water & Sewer Lines/Plants; Grading; Highway; Plumbing; Heating; Air Conditioning; Packaged Equipment.
- Ohio: Electrical; Plumbing; HVAC ⇄ SC Electrical; Plumbing; Packaged Equipment.
- Pennsylvania (Reading): Mechanical/Electrical ⇄ SC Electrical.
- Tennessee: BC/Building categories and CMC/Mechanical/CE/Elec ⇄ SC Limited/Unlimited Building; AC; Refrigeration; Plumbing; Electrical (per chart).
- Texas: Class A/B A/C & Refrigeration ⇄ SC Air Conditioning; Heating; Packaged Equipment; Refrigeration.
- Utah (exams prior to specific dates): Various building/mechanical/electrical & trades ⇄ SC Unlimited/Limited Building and trade classifications (per chart).
- MASC: Master Electrical/Plumber/Mechanical ⇄ SC Electrical; Plumbing; AC/HT/RG/PK.
- NASCLA (Accredited Exams): Commercial General Building Contractors; Electrical Examination Program ⇄ SC Unlimited Building; Electrical. SC accepts all states administering NASCLA Building/Electrical accredited exams.
Source: SC CLB – Waiver Agreements (PDF). :contentReference[oaicite:9]{index=9}
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