How to get a contractor license in South Carolina
South Carolina licenses contractors through two boards under the Department of Labor, Licensing and Regulation. The Contractor's Licensing Board covers general and mechanical contractors on commercial work over $10,000 (raised from $5,000 in 2023), and the Residential Builders Commission covers home builders on residential work over $5,000, with registration categories for residential specialty trades on smaller jobs. Which board you answer to depends on what you build, and some contractors hold credentials from both.
Licensing authority
South Carolina Contractor's Licensing Board (LLR): https://llr.sc.gov/clb/
When a license is required
A Contractor's Licensing Board license is required for general or mechanical construction where the total cost exceeds $10,000, a threshold raised from $5,000 by a 2023 law. On the residential side, the Residential Builders Commission licenses builders for projects above $5,000, and residential specialty contractors register for smaller work. The total cost includes labor and materials, so bids near the line count carefully.
License classes in South Carolina
General contractor license (CLB)
For commercial building and structures work over $10,000, issued in license groups whose bid caps scale with the financial position you document.
Mechanical contractor license (CLB)
Covers trades like electrical, plumbing, and HVAC on commercial work over $10,000, with its own classifications and exams.
Residential builder license (RBC)
Required for building or remodeling homes where the project exceeds $5,000, issued by the Residential Builders Commission with its own exam.
Residential specialty registration (RBC)
Registration categories for residential trade work like painting, floor covering, and carpentry below the builder threshold. Confirm the current registration rules with the commission.
What you need before you apply
- Determine your board: CLB for commercial general and mechanical work, RBC for residential building
- Pass the technical exam for your classification; the CLB accepts the NASCLA commercial exam for general building
- Pass the South Carolina business and law exam
- Document the financial position your license group requires, through a financial statement, with higher groups requiring stronger numbers
- Show the experience your board and classification require
- Carry workers compensation coverage if you have employees
- Register your business with the South Carolina Secretary of State
- Confirm current group limits and financial requirements with the board before applying, since they set your maximum bid
How to get licensed in South Carolina
- Sort out which board owns your work. Commercial GCs and commercial trade contractors go to the Contractor's Licensing Board. Home builders and remodelers go to the Residential Builders Commission. Mixed businesses may need both.
- Pass your exams. Sit the technical exam for your classification and the business and law exam. The NASCLA commercial exam covers the technical side for general building applicants and travels to other states.
- Prepare the financial statement. Your license group, which caps your bid size, follows from the net worth or financial position you document. Decide the group you need and prepare financials to match.
- File with the board. Submit the application with exam scores, financials, experience documentation, and fees to the CLB or RBC as appropriate.
- Mind your group limit and renew. Bidding above your group limit is a violation. As your jobs grow, file updated financials to move up a group, and verify current renewal requirements with your board.
Reciprocity with other states
South Carolina accepts the NASCLA commercial exam for general building, and the boards have exam-waiver arrangements with some nearby states for certain classifications. The South Carolina application, financial documentation, and business and law exam still apply, so contact the CLB or RBC with your existing license details.
Working without a license
Unlicensed contracting in South Carolina is a criminal offense, and state law bars unlicensed contractors from enforcing their contracts, which means no lawsuit and no mechanic's lien when a customer refuses to pay. The boards issue citations and fines, and building departments check license numbers at permit time.
South Carolina contractor license bond
South Carolina bonds depend on the license. A residential builder files a $15,000 bond, or other proof of financial responsibility the Commission accepts. Residential specialty contractors bond once a job tops $5,000. A commercial general or mechanical contractor files a financial statement for its license group, or a surety bond equal to that group's net worth.
- $15,000: Residential builder
- $5,000: Registered residential specialty contractor, jobs over $5,000
- At least $10,000: Licensed residential specialty trade such as heating and air or plumbing, jobs over $5,000
Source: S.C. Code 40-59-220(C) and 40-11-262 (South Carolina Legislature). Checked October 15, 2026. Bond amounts change; confirm with the board before you buy one.
Deposits in South Carolina
Statewide cap on a deposit: No general cap. Insurance roofing: no payment until the cancel window ends
South Carolina has no deposit limit, except on residential roofing paid from an insurance claim: the contractor may not require any payment until the homeowner's cancellation period has run (5 business days after the insurer says all or part of the claim is not covered), apart from emergency work the homeowner approved in writing.
- A buyer can cancel a home solicitation sale until midnight of the third business day.
- A 2026 bill to require escrow for client funds (H.4748) has not passed.
Source: S.C. Code 40-59-25(C) (South Carolina Legislature). Checked October 15, 2026. General information, not legal advice: cities and counties can add rules, so confirm with South Carolina Contractor's Licensing Board (LLR).
Contractor deposit limits by state
Your first estimate after you are licensed
South Carolina sets its license lines by total cost, more than $10,000 for commercial general or mechanical work and more than $5,000 for residential building, so price the whole job on one estimate with labor and materials together. Bill staged jobs from a progress billing invoice.
- HVAC estimate template
- Plumbing estimate template
- Framing estimate template
- Progress billing invoice template
- Send it with Staxen
Frequently asked questions
What is the licensing threshold in South Carolina?
For commercial general or mechanical work, a Contractor's Licensing Board license is required when total project cost exceeds $10,000, a limit raised from $5,000 in 2023. For residential building, the Residential Builders Commission requires a license above $5,000, with registration categories covering specialty trades on smaller residential jobs.
What is a license group in South Carolina?
Your bid cap. South Carolina issues CLB licenses in groups tied to the financial position you document, and each group sets the maximum job you may bid. Growing contractors move up groups by filing stronger financial statements with the board.
Does South Carolina accept the NASCLA exam?
Yes, the Contractor's Licensing Board accepts the NASCLA commercial exam for the general building technical exam. You still take South Carolina's business and law exam and complete the state application. NASCLA is worth taking if you also work in North Carolina, Georgia, or Tennessee.
Do I need both CLB and RBC credentials?
Only if your work spans both worlds, like a contractor who frames commercial shells and also builds custom homes. Many contractors need just one board. Map your actual book of work to the two boards' scopes, and ask LLR if a project sits in the gray zone.
How does Staxen help once the license is on the wall?
It removes the nights-and-weekends office shift. Eddie prices and drafts estimates from a voice note, Josie schedules and sends SMS reminders, Ivy invoices and chases payment, at $59 per month each or $149 for all three. Start free.