At a glance
The fastest way to orient yourself in South Carolina is to know these three thresholds and one separate gate.| Signal | Value |
|---|---|
| General and mechanical work trigger | Over $10,000 |
| Residential general work trigger | Over $5,000 |
| Residential specialty work trigger | Over $200 |
| Highway construction trigger | DOT prequalification required before bidding |
| Bidding rule | Licensure required before bidding — not just before work |
| Reciprocity model | Board-specific (CLB exam waivers + RBC reciprocity) |
Frequently asked questions
Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.- Contractors
- Regulators
At what contract value does South Carolina require a general or mechanical contractor license?
At what contract value does South Carolina require a general or mechanical contractor license?
General and mechanical work over $10,000 requires a license from the Contractors’ Licensing Board (CLB). This includes building construction, highways, public utility, and all mechanical trades (electrical, heating, plumbing, refrigeration, etc.). See Construction work regulated.
What is the threshold for residential contractor licensing?
What is the threshold for residential contractor licensing?
Residential general work over $5,000 requires a Residential Builders Commission (RBC) license. Residential specialty work over $200 requires an RBC registration. Note that CLB-licensed general and mechanical contractors may also perform residential work. See Construction work regulated.
Do I need a license before bidding, or just before work begins?
Do I need a license before bidding, or just before work begins?
In South Carolina, you must hold a license before bidding — not just before starting work. This is a critical distinction from states that allow unlicensed bidding. See Construction work regulated.
Where do I go to get licensed in South Carolina?
Where do I go to get licensed in South Carolina?
South Carolina has four agencies: the CLB for commercial/mechanical work, the RBC for residential-only work, DOT for highway prequalification, and Environmental Services for asbestos abatement. See Who regulates construction.
How much does it cost to get licensed?
How much does it cost to get licensed?
CLB general and mechanical contractors pay $350 initial license and $135 renewal, with exam fees from $60 to $116. RBC residential builders pay $135 application plus $220 license fee. Specialty contractor registration is $100. See Requirements.
What are the bonding and financial requirements?
What are the bonding and financial requirements?
CLB contractors are tiered into 5 groups based on financial qualification. Group 1 starts at $10,000 working capital / $20,000 net worth (contracts up to $100,000). Group 5 requires $250,000 working capital / $350,000 net worth (unlimited contracts). A surety bond may substitute for financial requirements. RBC residential builders need a $15,000 license bond. See Requirements.
Can I use my out-of-state license in South Carolina?
Can I use my out-of-state license in South Carolina?
The CLB has exam waiver agreements with 10 states — but these only waive technical exams. You must still pass the SC Business Management & Law exam. The RBC has separate reciprocal agreements with 5 states. See Reciprocal agreements.
Does South Carolina require a license for roofing work?
Does South Carolina require a license for roofing work?
Yes. General roofing and specialty roofing are CLB specialty classifications for commercial work over $10,000. Residential roofers register through the RBC as specialty contractors for work over $200. See Types of licenses.
Does South Carolina require a license for residential work?
Does South Carolina require a license for residential work?
Yes. Residential builders need an RBC license for general work over $5,000. Residential specialty contractors register for work over $200. Residential electrical, HVAC, and plumbing each have their own RBC license category with a $10,000 bond if projects exceed $5,000. See Requirements.
What contractor licenses would our company need for a large commercial project in South Carolina?
What contractor licenses would our company need for a large commercial project in South Carolina?
A CLB general contractor license at the appropriate group tier, plus any mechanical contractor licenses if the scope includes electrical, heating, plumbing, or refrigeration. You need a technical exam, SC Business Management & Law exam, 2 years experience, and financial qualification matching your contract size. You must be licensed before bidding. See Requirements.
What about fire alarm or sprinkler work?
What about fire alarm or sprinkler work?
Fire alarm, burglar alarm, and fire sprinkler work are licensed through the CLB (not the RBC). Each requires specific exams (PSI and/or NICET) and liability insurance. Licenses are biennial, expiring July 31st of even-numbered years. See Requirements.
Start with your goal
Pick the card that matches what you need right now. Each one links to the relevant section on this page.Is licensure triggered?
Start with contract value and work lane, then confirm which board owns the lane.
Find the right regulator
Use the regulator directory to route your question to the correct South Carolina agency.
Application and renewal details
Exams, fees, bonds, financial statements, continuing education, and renewal cycles for each trade.
Reciprocity direction
Find out which boards recognize out-of-state credentials and which exams are waived.
Special considerations
Different roles need different things from a South Carolina page. Use the tab that matches your situation to see what matters most before you read the full detail below.- Contractors
- Regulators
- General and mechanical work over $10,000 requires a Contractors’ Licensing Board license.
- Residential general work over $5,000 requires a Residential Builders Commission license.
- Residential specialty work over $200 requires a Residential Builders Commission registration.
- You must hold a license before bidding, not just before starting work.
- Highway construction requires DOT prequalification, which is a separate gate from board licensure.
- General and mechanical contractors are tiered into 5 groups based on financial qualifications, each with its own contract cap.
Readiness checklist
Four things you need to confirm before you can treat South Carolina as “ready” for a bid or an application. If any of these are unclear, you are not ready yet.Classify the project lane
Identify whether the work is general/mechanical commercial, residential-only, highway, or asbestos abatement. Remember that CLB-licensed contractors may also do residential work.
Apply the right threshold test
Check
$10,000 for general/mechanical, $5,000 for residential general, or $200 for residential specialty against the relevant work lane.Route to the correct regulator
Use the regulator directory below. South Carolina has four separate agencies, and you must hold a license before bidding.
If you can identify lane, threshold, regulator, and requirement set, you have the minimum package needed for a South Carolina readiness check.
Navigation
Use these links to jump to related cross-state comparisons and workflows.- New state evaluation if you are screening South Carolina for the first time.
- Multi-state bid readiness if you need to compare South Carolina with nearby jurisdictions.
- Licensing thresholds or prequalification patterns for cross-state context.
Construction work regulated
South Carolina uses three dollar thresholds across two boards, plus a separate prequalification gate for highways. All license classifications require licensure prior to bidding.| Work lane | What triggers regulation |
|---|---|
| General and mechanical work | Over $10,000 — Contractors’ Licensing Board |
| Residential general work | Over $5,000 — Residential Builders Commission |
| Residential specialty work | Over $200 — Residential Builders Commission |
| Highway construction | DOT prequalification required before bidding |
| Asbestos abatement | All asbestos work regulated (except residential exemption) — Environmental Services |
General and mechanical contractors licensed by the Contractors’ Licensing Board may also engage in residential construction. The Residential Builders Commission covers residential-only contractors.
Common determination scenarios
If you are trying to figure out where to start, expand the scenario that is closest to your situation.Commercial general or mechanical construction
Commercial general or mechanical construction
If the contract value exceeds $10,000, route to the Contractors’ Licensing Board. You will need a technical exam, the SC Business Management & Law exam, two years of experience, and a financial statement or surety bond that determines your group tier and contract cap.
Residential-only construction
Residential-only construction
Route to the Residential Builders Commission. Residential builders need one year of supervised experience, the SC Residential Builders exam, the Business and Law exam, and a $15,000 license bond. Residential specialty contractors register with a $5,000 bond if projects exceed $5,000.
Highway construction
Highway construction
DOT prequalification is a separate gate — no general contractor license, financial statements, or bidding limits are required for highway prequalification itself. You need a performance/indemnity bond and payment bond each equal to 100% of the contract value.
Burglar alarm, fire alarm, or sprinkler work
Burglar alarm, fire alarm, or sprinkler work
These are licensed through the Contractors’ Licensing Board, not the Residential Builders Commission. Each requires specific exams (PSI and/or NICET) and liability insurance. Licenses are biennial, expiring July 31st of even-numbered years.
Reciprocity request
Reciprocity request
Ask which board is involved first. The CLB has exam waiver agreements with 10 states (technical exams only — you still need the SC Business Management & Law exam). The RBC has separate reciprocal agreements with 5 states.
Who regulates construction
South Carolina splits construction regulation across 4 agencies. Use this directory to find the board that owns the lane you need.Highway prequalification — Department of Transportation
Highway prequalification — Department of Transportation
955 Park Street, Post Office Box 191, Columbia, SC 29202-3959Phone: (803) 737-1200Website: scdot.org
General and mechanical contractors — Contractors' Licensing Board
General and mechanical contractors — Contractors' Licensing Board
Post Office Box 11329, Columbia, SC 29211-1329Phone: (803) 896-4686 | Fax: (803) 896-4814Website: llr.sc.gov/clb
Residential-only contractors and home inspectors — Residential Builders Commission
Residential-only contractors and home inspectors — Residential Builders Commission
Post Office Box 11329, Columbia, SC 29211-1329Phone: (803) 896-4696 | Fax: (803) 704-6771Website: llr.sc.gov/res
Asbestos abatement — Department of Environmental Services
Asbestos abatement — Department of Environmental Services
Requirements
Each South Carolina board has its own application inputs, exams, fees, and renewal cycles. Expand the trade that applies to your situation. Fee and financial qualification tables are included in each section.General Contractors (CLB)
General Contractors (CLB)
| Requirement | Detail |
|---|---|
| Exam | Technical exam plus South Carolina Business Management & Law exam. Some specialty classifications waive the technical exam. |
| Experience | Two years of work experience within the last five years |
| Financial qualification | Financial statement or surety bond determines group tier (see tables below) |
| Initial license fee | $350 |
| Renewal fee | $135 |
| Exam fees | $60—$116 |
| Renewal cycle | Biennial — expires October 31st of even-numbered years |
| Group | Contracts up to |
|---|---|
| 1 | $100,000 |
| 2 | $400,000 |
| 3 | $1,000,000 |
| 4 | $3,500,000 |
| 5 | Unlimited |
| Group | Working Capital | Net Worth | Statement type |
|---|---|---|---|
| 1 | $10,000 | $20,000 | Owner-prepared with affidavit |
| 2 | $40,000 | $60,000 | Owner-prepared with affidavit |
| 3 | $100,000 | $150,000 | CPA-compiled |
| 4 | $175,000 | $250,000 | CPA-compiled |
| 5 | $250,000 | $350,000 | CPA-audited |
| Group | Surety bond amount |
|---|---|
| 1 | $20,000 |
| 2 | $60,000 |
| 3 | $150,000 |
| 4 | $250,000 |
| 5 | $350,000 |
A surety bond may be submitted in lieu of net worth or working capital requirements. The required bond form is on the CLB website. For renewal, Groups 1-4 submit an owner-prepared statement; Group 5 submits a CPA-reviewed statement.
Mechanical Contractors (CLB)
Mechanical Contractors (CLB)
| Requirement | Detail |
|---|---|
| Exam | Technical exam plus South Carolina Business Management & Law exam |
| Experience | Two years of work experience within the last five years |
| Financial qualification | Financial statement or surety bond determines group tier (see tables below) |
| Initial license fee | $350 |
| Renewal fee | $135 |
| Exam fees | $60—$116 |
| Renewal cycle | Biennial — expires October 31st of odd-numbered years |
| Group | Contracts up to |
|---|---|
| 1 | $35,000 |
| 2 | $100,000 |
| 3 | $200,000 |
| 4 | $400,000 |
| 5 | Unlimited |
| Group | Working Capital | Net Worth | Statement type |
|---|---|---|---|
| 1 | $3,500 | $7,000 | Owner-prepared with affidavit |
| 2 | $10,000 | $15,000 | Owner-prepared with affidavit |
| 3 | $20,000 | $30,000 | CPA-compiled |
| 4 | $40,000 | $60,000 | CPA-compiled |
| 5 | $200,000 | $300,000 | CPA-audited |
| Group | Surety bond amount |
|---|---|
| 1 | $7,000 |
| 2 | $15,000 |
| 3 | $30,000 |
| 4 | $60,000 |
| 5 | $300,000 |
Residential Builders and Specialty Contractors (RBC)
Residential Builders and Specialty Contractors (RBC)
| Requirement | Detail |
|---|---|
| Experience | One year under supervision of a licensed builder or general contractor (affidavit required) |
| Exam | SC Residential Builders exam and Business and Law exam (both PSI-administered) |
| Credit report | Required as part of application |
| Bond | $15,000 license bond (residential builders); $10,000 bond for residential electrical, HVAC, or plumbing if projects exceed $5,000; $5,000 bond for specialty contractors if projects exceed $5,000 |
| Renewal cycle | Biennial (except Certificate of Authorization, which renews annually) |
| License type | Application fee | License fee | Renewal fee | Late fee | Reinstatement fee |
|---|---|---|---|---|---|
| Residential Builder (RBB) | $135 | $220 | $220 | $50 | $480 |
| Residential Electrical (RBE) | $135 | $220 | $220 | $50 | $480 |
| Residential HVAC (RBH) | $135 | $220 | $220 | $50 | $480 |
| Residential Plumbing (RBP) | $135 | $220 | $220 | $50 | $480 |
| Home Inspector (RBI) | $80 | N/A | $160 | $10 | $360 |
| Specialty Contractor Registration (RBS) | N/A | $100 | $100 | $20 | $290 |
| Certificate of Authorization (COA) | N/A | $100 | $100 | N/A | N/A |
Specialty contractors may register in up to three classifications and need a reference letter or affidavit for one year of experience per classification. No exam is required. Home inspectors need one year of experience or a formal training course approved by the Commission.
Burglar Alarm License (CLB)
Burglar Alarm License (CLB)
| Requirement | Detail |
|---|---|
| Exam | Two PSI exams (Burglar Alarm exam and Code of Laws exam) |
| Training | Level 1 training course from the National Training School (NTS) |
| Insurance | Comprehensive general liability (bodily injury, death, property damage) |
| Background check | 10-year criminal background report required |
| Initial license fee | $200 (includes one Qualifying Party) |
| Renewal fee | $200 |
| Additional Qualifying Party | $10 |
| Branch office | $50 |
| Renewal cycle | Biennial — expires July 31st of even-numbered years |
Fire Alarm License (CLB)
Fire Alarm License (CLB)
| Requirement | Detail |
|---|---|
| Exam | Two PSI exams (Fire Alarm exam and Code of Laws exam) |
| Training | NTS Level 1 or NICET Level II Fire Protection Engineering Technology |
| Insurance | Comprehensive general liability (bodily injury, death, property damage) |
| Background check | 10-year criminal background report required |
| Initial license fee | $200 |
| Renewal fee | $200 |
| Additional Qualifying Party | $10 |
| Renewal cycle | Biennial — expires July 31st of even-numbered years |
Fire Protection Sprinkler Systems License (CLB)
Fire Protection Sprinkler Systems License (CLB)
| Requirement | Detail |
|---|---|
| Certification | NICET Level III or IV in Automatic Sprinkler System Layout or Water-Based Systems Layout (must be kept current) |
| Insurance | Comprehensive general liability with minimum $100,000 coverage |
| Initial license fee | $200 (includes one Qualifying Party) |
| Renewal fee | $200 |
| Additional Qualifying Party | $50 |
| Branch office | $100 |
| Renewal cycle | Biennial — expires July 31st of even-numbered years |
Highway Prequalification (DOT)
Highway Prequalification (DOT)
| Requirement | Detail |
|---|---|
| Performance bond | 100% of contract value |
| Payment bond | 100% of contract value |
| Qualification basis | Experience, responsibility record, and equipment |
| Duration | Good for 12 months |
| Prequalification fee | None |
No general contractor license, financial statements, or bidding limits are required for highway prequalification itself. This is a separate gate from CLB licensure.
Asbestos Licensing (Environmental Services)
Asbestos Licensing (Environmental Services)
All licenses are issued based on training qualifications. Licenses are valid for one year from the examination date, except contractors, group, and facility O&M licenses which may be valid for one year from the issued date.
| License type | Fee |
|---|---|
| Contractor | $100 |
| Air Sampler | $100 |
| Consultant / Building Inspector | $100 |
| Consultant / Management Planner | $100 |
| Consultant / Project Designer | $100 |
| Supervisor (AHERA) | $50 |
| Worker (AHERA) | $10 |
| Group size | Fee per discipline |
|---|---|
| Up to 10 people | $25 minimum |
| 11-20 people | $25 + $2.50 per person above 10 |
| 21-50 people | $25 + $5 per person above 20 |
| 51-90 people | $25 + $7.50 per person above 50 |
| 91+ people | $500 maximum |
| Facility O&M | Same as group fee |
Reciprocal agreements
South Carolina has two separate reciprocity programs. The Contractors’ Licensing Board offers technical exam waivers with 10 states — but the South Carolina Business Management & Law exam is still required. The Residential Builders Commission has full reciprocal agreements with 5 states.CLB exam waivers and RBC reciprocity are different programs with different state lists. Always confirm which board applies to your situation.
| Board | Reciprocal states | Coverage |
|---|---|---|
| Contractors’ Licensing Board (exam waivers) | Alabama, Georgia, Louisiana, Mississippi, North Carolina, Ohio, Pennsylvania, Tennessee, Texas, Utah | 10 states |
| Residential Builders Commission | Alabama, Georgia, Louisiana, North Carolina, Utah | 5 states |
What CLB exam waivers actually waive
What CLB exam waivers actually waive
The exam waiver agreements only waive certain technical examinations. Applicants from waiver states must still:
- Meet all other licensure requirements (experience, financial qualification, insurance)
- Pass the South Carolina Business Management & Law exam
- Submit the full application with applicable fees
Types of licenses
South Carolina offers credentials across two boards and several specialty programs. Use these lists when you need to confirm the exact license name for an application or comparison.General Contractors (CLB)
General Contractors (CLB)
- Building Construction (limited building — three stories or less; unlimited building)
- Highways and Streets (bridges; grading; concrete paving; highway incidental; asphalt paving)
- Public Utility (water and sewer lines; water and sewer plants; pipelines)
- Specialty (boiler installation; boring and tunneling; concrete; glass and glazing; marine; masonry; pre-engineered metal buildings; public electrical utility; railroad; general roofing; specialty roofing; structural framing; structural shapes; swimming pools; wood frame structures; demolition; environmental)
Mechanical Contractors (CLB)
Mechanical Contractors (CLB)
- Electrical
- Heating
- Plumbing
- Packaged Equipment
- Lightning Protection Systems
- Pressure and Process Piping
- Refrigeration
- Air Conditioning
Other Programs (CLB)
Other Programs (CLB)
- Fire Sprinkler
- Burglar Alarm
- Fire Alarm
Residential (RBC)
Residential (RBC)
- Residential Builder (RBB)
- Residential Home Inspector (RBI)
- Certificate of Authorization (COA)
- Residential Electrical (RBE)
- Residential HVAC (RBH)
- Residential Plumbing (RBP)
- Residential Specialty Contractor Registration (RBS): vinyl/aluminum siding; insulation; roofers; floor covering; masons; drywall; carpenters; painters/wallpaperers; stucco; solar panel
See also
South region guide
Browse all South jurisdictions for comparison.
Contractors guide
Cross-state guidance for contractors evaluating new jurisdictions.
Regulators guide
Cross-state guidance for comparing regulatory models and agency structures.
North Carolina
CLB exam waiver and RBC reciprocity with South Carolina.
Georgia
CLB exam waiver and RBC reciprocity with South Carolina.
Alabama
CLB exam waiver and RBC reciprocity with South Carolina.