South Carolina General Contractor License Requirements: The Two Boards, the Five License Groups & the $10,000 Threshold (2026)

If you’re planning to run a general contractor business in South Carolina, you need an actual license, not a registration, and which one depends on what you build. Commercial general and mechanical construction over $10,000 runs through the South Carolina Contractor’s Licensing Board. Residential building over $5,000 runs through a completely separate agency, the Residential Builders Commission, with its own exams, fees, and forms. Both sit inside the Department of Labor, Licensing and Regulation, and picking the wrong one means starting over. On the commercial side you also pass two exams, document two years of experience, and submit a financial statement or surety bond that sets the maximum dollar value of any job you can bid. This page walks through both paths: thresholds, classifications, license groups, exams, fees, penalties, and renewal.

Licensing rules vary a lot from one state to the next. Some hand the job to local governments entirely, while others run one central program that every contractor answers to. The demand behind those rules is steady either way. Bureau of Labor Statistics figures from the Occupational Employment and Wage Statistics survey for May 2025 count about 380,360 construction managers, 812,210 first-line supervisors of construction trades, 146,720 construction and building inspectors, and roughly 1,096,780 construction laborers working nationwide. Construction manager jobs are on track to rise 9% between 2024 and 2034, well ahead of the pace for the average occupation.

South Carolina is one of the country’s genuinely construction-heavy states, and the data backs that up rather than just the reputation. BLS state figures (South Carolina OEWS, May 2025) count 5,620 construction managers earning a mean of $59.34 an hour, or $123,420 a year, with a median of $108,110. There are 13,150 first-line supervisors of construction trades and extraction workers at a $77,790 mean, 19,620 construction laborers at $45,470, and 2,500 construction and building inspectors at $60,040. The revealing number is concentration. South Carolina employs construction laborers at a location quotient of 1.21, inspectors at 1.15, and supervisors at 1.09, meaning every one of those occupations runs above the national rate. Construction managers land at exactly 1.00, dead even with the national average. Very few states have all four sitting at or above par, and it explains why the licensing system here is stricter than in most of the Southeast.

Quick answer: do you need a general contractor license in South Carolina?

Yes, and South Carolina means it. This is a licensing state with exams, experience requirements, financial qualification, and criminal penalties for working without a credential.

Which license you need comes down to two questions: is the work commercial or residential, and how big is the job?

• Commercial general or mechanical construction over $10,000 requires a license from the Contractor’s Licensing Board (CLB) under S.C. Code Title 40, Chapter 11. The threshold was $5,000 from 1998 until May 19, 2023, when Act 69 raised it to more than $10,000.
• Residential building over $5,000 requires a Residential Builder license from the Residential Builders Commission (RBC) under Title 40, Chapter 59.
• Residential specialty work over $500 requires registration or a specialty license from the RBC.

On the commercial side, your license carries two labels: a classification that says what kind of work you may perform, and a group from 1 to 5 that caps the dollar value of any single bid or job. The group comes from your financial statement or a surety bond, not from your skill.

Work without the right license and you cannot bring an action at law or in equity to enforce your own contract. You did the work, and the courthouse door is closed.

Two boards, two rulebooks: how South Carolina splits contractor licensing

Most states run one contractor board. South Carolina runs two, and they behave like separate countries.

The Contractor’s Licensing Board handles commercial general contractors and mechanical contractors under Title 40, Chapter 11. Its system is built around classifications, qualifying parties, exams, and financial groups. It also supervises the state Boiler Safety Program.

The Residential Builders Commission handles residential builders, residential specialty contractors and registrants, and home inspectors under Title 40, Chapter 59. Its jurisdiction is defined by building size: residential buildings not over three floors in height with no more than 16 units in any single apartment building.

The differences are not cosmetic. They have different fee schedules, different exams with different passing scores, different application checklists, and different verification portals. The CLB states plainly that surety bonds made payable to the Residential Builders Commission will not be accepted, which tells you how separate the two systems really are.

If your business does both commercial and residential work above the thresholds, you need credentials from both. That is not a loophole to route around; it is how the state is designed.

Question	Contractor’s Licensing Board	Residential Builders Commission
Statute	Title 40, Chapter 11	Title 40, Chapter 59
Covers	Commercial general and mechanical	Residential building and specialty
Threshold	Over $10,000	Over $5,000 builder, over $500 specialty
Experience	2 years within the past 5	1 year under a licensee
Financial test	Group 1 to 5 by financials or bond	No group system
Main fee	$350 licensure fee	$220 license plus application fee
Phone	(803) 896-4686	(803) 896-4696

Commercial classifications and which ones require a technical exam

The CLB licenses by classification and subclassification, and you need one for every kind of work you intend to perform. Section 40-11-410 defines them, starting with General Contractors-Building, which covers commercial, industrial, institutional, modular, and all other types of building construction.

Most classifications require a technical exam. A handful do not.

Requires a technical exam

• Unlimited Building, Limited Building
• Wood Frame Structures
• Concrete, Concrete Paving
• Asphalt Paving, Grading
• Bridges, Highway, Pipelines
• Roofing, Glass and Glazing
• Swimming Pools, Marine
• Pre-engineered Metal Buildings
• Water and Sewer Plants or Lines
• Public Electrical Utility
• Nonstructural Renovation
• Boiler Installation

No technical exam required

• Masonry
• Structural Shapes
• Boring and Tunneling
• Highway Incidental
• Miscellaneous Metals
• Railroad Lines

Two details worth knowing. The Highway classification is not a single test: it requires passing the Bridges, Concrete Paving, Asphalt Paving, and Grading exams. And Boiler Installation can be obtained either by technical exam or by holding an ASME “S” stamp or a National Board “R” stamp for a qualified individual of the company.

Even for the no-exam classifications, you still pass the SC Business Management and Law exam and file a work experience affidavit covering two years within the past five. Only the Nonstructural Renovation classification accepts experience that is entirely residential.

Mechanical contractor classifications with technical exams include Air Conditioning, Heating, Electrical, Plumbing, Refrigeration, Packaged Equipment, Process Piping, and Lightning Protection.

License groups: how your financials set your bid limit

This is the part of South Carolina licensing that catches out-of-state contractors. Your classification says what you can build. Your group says how big. You submit a financial statement or a surety bond, and that document sets a hard ceiling on the value of any single bid or job.

General contractor group	Bid and job limit	Working capital	Net worth	Surety bond
Group 1	$100,000	$10,000	$20,000	$20,000
Group 2	$400,000	$40,000	$60,000	$60,000
Group 3	$1,000,000	$100,000	$150,000	$150,000
Group 4	$3,000,000	$175,000	$250,000	$250,000
Group 5	Unlimited	$250,000	$350,000	$350,000

Mechanical contractors use a separate and lower scale.

Mechanical contractor group	Bid and job limit	Working capital	Net worth	Surety bond
Group 1	$35,000	$3,500	$7,000	$7,000
Group 2	$100,000	$10,000	$15,000	$15,000
Group 3	$200,000	$20,000	$30,000	$30,000
Group 4	$400,000	$40,000	$60,000	$60,000
Group 5	Unlimited	$200,000	$300,000	$300,000

Working capital means current assets minus current liabilities. Net worth means total assets minus total liabilities. You only have to meet one of the two, not both, which is worth reading twice because a lot of applicants assume they need to clear every column in their row.

Two more mechanics of the group system matter on real jobs. Under Section 40-11-330, two or more licensed contractors may submit a Joint Venture Bid as long as the contract does not exceed the highest group limit among the members, and an unlicensed contractor cannot be part of a joint venture. And under Section 40-11-340, acting as sole prime contractor requires that 40% or more of the work by total construction cost falls inside your classifications for some classification groups, rising to 51% for others.

Meeting a group limit never authorizes work outside your classification. The two labels operate independently.

Joint ventures, sole prime status, and working above your group

Two provisions in Chapter 11 decide whether you can chase a job that sits above your own license, and both come up constantly on larger commercial work.

Joint venture bids. Section 40-11-330 lets two or more licensed contractors combine bids and submit a Joint Venture Bid, provided the contract does not exceed the highest group limitation among the members. So a Group 3 contractor partnering with a Group 5 contractor can bid to the Group 5 ceiling. The hard limit is that an unlicensed contractor may not be a party to a joint venture, which means you cannot borrow capacity from a firm that lacks a license.

Sole prime contractor status. Section 40-11-340 governs when a single licensee can act as sole prime on a project that spans multiple trades. For entities licensed under the classifications in Section 40-11-410(1), (2), or (3), at least 40% of the work measured by total construction cost must fall inside their own classifications. For entities licensed under Section 40-11-410(4) and (5), that share rises to 51%.

Read together, the two sections describe the practical growth path in South Carolina. You either raise your financial documentation to move up a group, or you partner with a licensed firm that already sits where you want to bid. There is no third route, and the state closed the obvious workaround by barring unlicensed parties from joint ventures and by making it a disciplinary offense to let your license be used by an unlicensed entity or to act as its agent, partner, or associate.

Financial statement or surety bond: picking your route

Every applicant proves financial capacity one of two ways at initial licensure, renewal, and any group revision.

Route one: a financial statement. The balance sheet must be dated no more than 12 months before the application and must clearly show your net worth or working capital. What kind of statement depends on your group, and the requirement is lighter at renewal than at initial licensure.

Group	Initial licensure	Renewal
Groups 1 and 2	Owner-prepared with affidavit	Owner-prepared with affidavit
Groups 3 and 4	CPA-compiled under GAAP	Owner-prepared or CPA-compiled
Group 5	CPA-audited balance sheet	CPA-reviewed statement

Compiled, reviewed, and audited statements must come from a licensed CPA and include a signed cover letter. If your entity has less than two years of operating history, personal financial statements of the principals are acceptable, but only for the initial application.

Route two: a surety bond. Under Section 40-11-260 you may substitute a bond in the same amount as the required net worth or working capital for your group. The bond has to be continuous, stay in effect for as long as you hold the license or until you file a qualifying financial statement, list the State of South Carolina as obligee, and provide for cancellation only with 30 days’ notice to the board and the applicant. It also has to benefit anyone damaged by your breach of a construction contract.

Practical detail that trips people up: the original bond must carry the surety’s signature, the principal’s signature, a visible surety company seal, and an attached power of attorney. DocuSign is not accepted.

How to get your South Carolina contractor license

The commercial path takes most applicants several months, and the order matters because exams come before the license application.

Step 1: Choose your board and classification

Commercial over $10,000 goes to the CLB. Residential over $5,000 goes to the RBC. Then pick every classification and subclassification your work touches, because each one has its own exam and experience requirement.

Step 2: Designate a primary qualifying party

The CLB requires a Primary Qualifying Party (PQP) for each classification: the individual principally responsible for directing or reviewing that work. Additional qualifying parties meet the same exam requirements without being designated primary. The PQP must complete all exam requirements before the business submits its license application.

Step 3: Document two years of experience

Submit at least two years of work experience performed within the past five years for each requested classification, using the board’s Work Experience Affidavit. Unless a classification says otherwise, experience should be primarily commercial. Supervisors document the hands-on work they oversaw in the field.

Step 4: Pass the business management and law exam

Every commercial applicant passes the S.C. Business Management and Law for Commercial Contractors exam through PSI, regardless of how they qualify on the technical side. There are no pre-approvals needed to schedule it.

Step 5: Pass your technical exam or claim a waiver

Register directly with PSI for the technical exam covering your classification. Alternatively, have NASCLA send an accepted transcript straight to the board, or apply by exam waiver or reciprocity if your classification and state appear on the board’s waiver agreement list.

Step 6: Assemble the financial documentation

Prepare the financial statement matching your group and initial-licensure tier, or the completed surety bond package. This single document decides your bid ceiling, so choose the group you actually want rather than the minimum you qualify for.

Step 7: File the application and pay $350

Submit the General and Mechanical Contractor initial application with the $350 licensure fee, Secretary of State verification of authority to do business in South Carolina (not required for sole proprietors), your financial statement or bond, qualifying party applications, and your PSI pass sheets. Applications go to PO Box 11329, Columbia, SC 29211, by email to the board, or in person at 110 Centerview Dr.

Step 8: Check local requirements before you break ground

The board is explicit that cities and counties where you plan to work may require additional licensing and permitting, each with its own rules and fees. Confirm before you bid, not after.

Commercial license fees and renewal dates

Item	Detail
Licensure fee	$350
GC license expiration	October 31 in even-numbered years
MC license expiration	October 31 in odd-numbered years
Exam provider	PSI
Business law exam	Required of all applicants
Experience	2 years within the past 5
Financial proof	Statement or surety bond, every renewal
Board address	110 Centerview Dr., Columbia, SC 29210
Mailing address	PO Box 11329, Columbia, SC 29211
Phone	(803) 896-4686

Note that financial qualification is not a one-time hurdle. You resubmit a statement or bond at every renewal, which means a bad year can move you down a group and shrink what you’re allowed to bid.

The residential path: builder license and specialty registration

A Residential Builder is someone who constructs, superintends, or offers to construct or superintend the construction, repair, improvement, or reimprovement of a residential building not over three floors in height and with no more than 16 units in any single apartment building, when the cost exceeds $5,000.

A Residential Specialty Contractor is an independent contractor who contracts with a licensed residential builder, general contractor, or property owner to do work requiring special skills and specialized trades, when the undertaking exceeds $500 and is not regulated under Chapter 11.

The RBC licenses electrical, HVAC, and plumbing specialties by exam, and registers other specialty trades without a technical exam. It also issues a Certificate of Authorization, required for any firm where a licensee does not own at least 51% of the business.

Credential	Application fee	License or registration fee	Renewal
Residential Builder (RBB)	$135	$220	$220
Residential Specialty Electrical (RBE)	$135	$220	$220
Residential Specialty Plumbing (RBP)	$135	$220	$220
Residential Specialty HVAC (RBH)	$100	$220	$220
Specialty Contractor Registration (RBS)	Included	$100	$100
Home Inspector (RBI)	$80	Included	$160
Certificate of Authorization (COA)	Not applicable	$100	$100

Late renewal adds $50 for most licenses, $20 for the specialty registration, and $90 for home inspectors. Reinstatement runs $480 for builder and specialty licenses, $290 for registrations, and $360 for home inspectors.

Residential exams are two-part, like the commercial ones, and the passing scores differ by trade in a way that surprises people.

Residential exam	Questions	Passing score
Home Builder technical	110	70%
Residential Electrical technical	60	73.3%
Residential HVAC technical	80	65%
Residential Plumbing technical	65	67.7%
Home Inspector technical	100	70%
Business Management and Law	50	Scale score of 68

Before you can sit for a residential exam you need one year of Commission-approved experience under the supervision of a licensee in your trade, and the Commission has to approve your application first. The RBC application checklist is heavier than the commercial one: notarized signature, photo ID, Social Security card copy, notarized Verification of Lawful Presence, W-2s or 1099s from the employer verifying your experience, supporting certifications or transcripts, and a complete credit report from TransUnion, Equifax, or Experian. Check or money order only, and no cash. Incomplete applications are returned unprocessed.

Specialty registration skips the exam but not the vetting. You submit a Work Experience Affidavit showing one year of residential experience within the past five years for each trade classification, or notarized reference letters describing the specific work you personally performed. Generic form letters are rejected.

Exam waivers, reciprocity, and NASCLA

South Carolina accepts outside credentials for the technical portion only. The Business Management and Law exam is never waived, on either the commercial or the residential side.

On the residential side the Commission maintains technical exam waiver agreements for Residential Builders in non-mechanical trades with Alabama, Georgia, Louisiana, Mississippi, North Carolina, and the SC Contractor’s Licensing Board, and it accepts the NASCLA National Contractors Exam. Residential Electrical waivers cover North Carolina and Mississippi plus the NASCLA electrical exam. HVAC waivers cover Alabama, North Carolina, and Mississippi. Plumbing waivers cover North Carolina and Mississippi.

On the commercial side, waiver and reciprocity applicants must hold a license in good standing in a jurisdiction that administered the reciprocating exam, and the board keeps a published list of eligible states and classifications. Two limits catch people. If your existing license was itself obtained by waiver or grandfathering, you are not eligible. And if your state is listed but your specific classification is not, you are not eligible either.

Mechanical trades have their own route. As of January 1, 2026, Carolinas AGC is the SC Mechanical Trades Certification Program provider, and current Master Electrician, Master Plumber, and HARV certifications obtained by examination can support the corresponding classification.

Local business licenses and permits on top of the state license

A state license lets you contract. It does not let you skip city hall.

South Carolina municipalities and counties run their own business license and building permit systems, each with separate rules and fee schedules. The CLB’s own guidance tells applicants to identify every city or county they’ll work in, look it up through the SC Municipal Online Directory or the SC Association of Counties, and call the business license or building permit department directly.

Section 40-11-420 also puts permits into the licensing framework: it sets requirements for obtaining a building permit and for providing the list of licensed contractors performing work on a project. Failing to obtain a required building permit before starting construction is itself a listed ground for board discipline.

That second half matters on multi-trade jobs. The permit process expects a list of the licensed contractors working on the project, which means your subs’ license status becomes visible to the building official handling your permit. If a sub on that list is unlicensed or working outside their classification, the problem surfaces at the counter with your name attached to it.

Practically, this argues for verifying every sub before you put them on a job rather than after. Both boards publish free licensee lookup tools, and verification costs nothing. The board’s disciplinary grounds include entering into a contract with an unlicensed contractor, so a five-minute check protects your own license as much as it protects the homeowner.

Penalties for contracting without a South Carolina license

South Carolina’s penalties reach further than a fine, and the worst one is financial rather than criminal.

You lose the right to enforce your contract. Under Section 40-11-370, an entity without a valid license may not bring an action at law or in equity to enforce a contract. The same bar applies if you contracted under a name other than the exact name on your license.

Unlawful practice is a misdemeanor. Section 40-11-200 makes practicing or offering to practice in violation of the chapter, or knowingly submitting false information to obtain a license, a misdemeanor punishable by up to one year of imprisonment or a fine of up to $5,000.

Civil penalties up to $5,000 per violation. Section 40-11-110 lets the board impose a civil penalty of up to $5,000 for each violation and order an unlicensed contractor to cease and desist. Unpaid penalties can be converted to a court judgment.

Owners are exposed too. The statute states that both the owner and the contractor are subject to penalties, and the board distributes posters to building permit offices statewide saying exactly that.

Naming rules count as licensing rules. “Engaging in construction” includes marketing, advertising, site signs, and submitting contracts, all of which must use the exact licensed name. Vehicle advertising is the one exception and may use an abbreviated version, as long as it isn’t misleading.

Grounds for discipline also include aiding or abetting an unlicensed entity, entering into a contract with an unlicensed contractor, false or misleading advertising, bidding while suspended or on probation, and failing to maintain the net worth for your group. Hiring an unlicensed sub is a violation against you, not just against them.

Renewal, lapses, and reinstatement

Commercial licenses renew on the October 31 cycle for your license type, and every renewal requires fresh financial documentation.

On the residential side the lapse rules are strict and worth memorizing. A license or registration that lapses for 12 months up to three years requires a reinstatement application and the reinstatement fee. A license that lapses three or more years means reapplying and passing the examination required for initial licensing again. A registration that lapses three or more years means reapplying as a brand-new applicant.

Qualifying party certifications have their own clock. A PQP or QP certification that has been inactive for less than four years can be transferred to a new license with a revision application. Inactive for more than four years and you start with a full initial qualifying party application.

Licensees also have a reporting duty most people never read: under Section 40-11-380, a licensee subjected to any provision of bankruptcy law must notify the board within 15 days.

Setting up the business in South Carolina

Licensing is the construction credential. These are the pieces around it.

Entity and Secretary of State. Corporations and LLCs need verification of authority to conduct business in South Carolina from the Secretary of State, submitted with the license application. Sole proprietors are excused from that item.

EIN. Free from the IRS, and needed for banking and payroll.

State taxes. Register with the South Carolina Department of Revenue for withholding and any applicable sales and use tax. Construction has its own treatment on materials, so get an accountant involved.

Workers’ compensation. South Carolina generally requires coverage once you regularly employ four or more workers, which is a different trigger than most states. Confirm your situation with the Workers’ Compensation Commission rather than assuming.

Local business licenses. Budget separately for each city and county you operate in.

What licensing costs upfront

Startup cost	Typical amount
CLB commercial licensure fee	$350
Residential Builder application plus license	$355 total
Residential specialty license, electrical or plumbing	$355 total
Specialty contractor registration	$100
Certificate of Authorization	$100
PSI exams, business law plus technical	Varies by exam
Surety bond, GC Group 1	$20,000 bond amount
Surety bond, GC Group 5	$350,000 bond amount
CPA-compiled financial statement	Varies by firm
EIN from the IRS	Free
Local business licenses	Varies by city and county

Bond amounts above are the face value of the bond, not what you pay a surety. Your premium depends on credit and financials. Confirm every fee with the issuing board before budgeting.

Nine mistakes that stall South Carolina applications

Applying to the wrong board. Commercial over $10,000 is CLB. Residential over $5,000 is RBC. Bonds payable to one are not accepted by the other.

Assuming the old $5,000 commercial threshold. Act 69 raised it to more than $10,000 effective May 19, 2023. Guides written before that date are wrong.

Applying for the license before passing the exams. Qualifying parties must complete exam requirements before the entity applies.

Choosing the minimum group. Group 1 caps you at $100,000 per job. One good opportunity above that and you’re revising your license instead of bidding.

Thinking you need both working capital and net worth. You only have to meet one.

Contracting under a trade name. Marketing, site signs, and contracts must use the exact licensed name, or you lose contract enforcement rights. Only vehicles may abbreviate.

Using DocuSign on the surety bond. Wet signatures, a visible seal, and an attached power of attorney are required.

Skipping the credit report on a residential application. The RBC requires a full credit report, and incomplete applications come back unprocessed.

Letting a residential license sit three years. Past that, you retake the exam.

What general contractors earn in South Carolina

Licensing is the cost of entry. Here’s what the work pays, from the May 2025 wage survey.

South Carolina, May 2025	Employment	Mean hourly	Mean annual	Median annual	10th percentile	90th percentile
Construction managers	5,620	$59.34	$123,420	$108,110	$71,490	$192,000
First-line supervisors, construction trades	13,150	$37.40	$77,790	$75,350	$52,220	$105,840
Construction and building inspectors	2,500	$28.87	$60,040	$58,840	$36,140	$84,860
Construction laborers	19,620	$21.86	$45,470	$42,940	$31,200	$63,370

The construction manager spread is the widest of the four by a distance, running from $71,490 at the 10th percentile to $192,000 at the 90th. That $120,000 gap says the license is a floor, not a ceiling: what separates the top decile is the size of work you can bid, which in South Carolina is literally a function of the group on your license. Moving from Group 1 to Group 3 changes your maximum job from $100,000 to $1,000,000, and that shows up in pay. For how these figures compare across states, see our contractor and construction manager salary breakdown.

Spend your time bidding, not chasing paperwork

South Carolina already asks a lot of your back office. Your group limit caps what you can bid, your renewal needs current financials, and your contracts and site signs have to carry the exact name on your license. That is a lot of detail to hold in your head while running three jobs.

Housecall Pro’s general contractor software keeps job details, pricing, and customer records in one place, so your licensed business name and standard terms carry through from bid to final payment instead of getting retyped every time. Build quotes with cost breakdowns and margin visible before you send them with Estimates, collect a signature on the spot, then bill larger projects in stages with Invoicing while automated reminders handle the follow-up. Cleaner records also make renewal season easier, since the financial statement behind your group limit is only as good as your bookkeeping. Running longer builds? Look at construction management software for remodelers or the general contractor resource hub for free templates. Smaller residential work fits handyman software. Try Housecall Pro free for 14 days.

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General information, not legal advice. Fees, thresholds, and group limits change. Verify with the SC Contractor’s Licensing Board, the SC Residential Builders Commission, and your local building department, and consult an attorney about your contracts.