Plumber Permits & Licenses in Charleston, SC

Required in most counties/cities to register alarms and avoid excessive false alarm fees.

Required for all LLCs. Annual report also required separately.

Applies to all LLCs; filed online via Business One Stop portal.

Required for plumbing contractors performing work over $5,000 or residential over $10,000. Fees vary by license classification (residential vs. commercial).

Prerequisite for contractor license; requires qualifying party with experience.

2 years experience under master plumber or approved training; exam required. Business must employ licensed individuals.

4 years experience including 1 year as journeyman; exam required (75% pass). Must be affiliated with licensed business.

Required if DBA used; renew every 10 years for $10.

Via MyDORWAY portal; SUT-100 for sales tax if applicable to materials sold.

Plumbers must collect and remit sales tax on taxable tangible personal property (e.g., water heaters, faucets) sold to customers. Labor for repairs is generally not taxable unless combined with taxable parts. Registration via SCDOR's online portal MyDOR. Effective per SCDOR guidelines.

All businesses operating in South Carolina must register with SCDOR for state income tax purposes. As an LLC, the business may be pass-through for federal income tax, but must still register. Done via MyDOR. Applies to all businesses with nexus in SC.

Required for any employer withholding South Carolina income tax from employee wages. Registration via MyDOR. Applies to all employers in SC, not industry-specific.

All employers in South Carolina must register with DEW. Tax rate varies by experience rating; new employers pay 0.055 (5.5%) on first $8,000 of employee wages. Applies to all employers, not plumbing-specific.

LLCs in SC are subject to a $200 annual franchise tax, due each year regardless of income. Must file Form SC1120S or SC1120S-AB. Failure to file results in administrative dissolution after 60 days. Effective under SC Code Section 12-20-20.

Many South Carolina municipalities (e.g., Columbia, Charleston, Greenville) require a local business license or privilege tax. Fees and requirements vary. Check with city/county clerk. Example: City of Columbia – https://www.cityofcolumbia.sc.us/198/Business-License. Not statewide, but common in urban areas.

Required for all plumbing businesses in SC. Must have a licensed contractor responsible for work. Renewal required every 2 years. Classifications include Residential, Commercial, and Specialty. Exemptions: minor repairs under $500 by homeowners (not contractors).

All 46 SC counties require business licenses for plumbers; fees based on gross receipts. Contact specific county treasurer (e.g., Greenville County: https://www.greenvillecounty.org/Business/License.aspx). No statewide uniformity.

Required in all SC municipalities. Example for Charleston (2024 fees). Check city code (e.g., Greenville: https://www.greenvillesc.gov/598/Business-Tax-License).

Plumbers must verify zoning allows "contractor services." Home occupation permit needed for residences (e.g., Charleston Code Sec. 54-406). Confirm with local planning dept.

Allowed in residential zones with restrictions (e.g., no storage of materials/vehicles). Varies by city code (e.g., Columbia Ordinance 2023-045).

Required for structural changes, plumbing/electrical in business space. Administered by county/city building depts.

Must comply with local sign ordinances (e.g., Charleston Code Ch. 54, Art. VIII). Freestanding signs often restricted.

Local fire dept. enforces SC Fire Code. Required for shops/stores with public access.

Zoning codes specify parking ratios (e.g., 1 space per 300 sq ft office). May need valet validation in downtown districts.

Not typical for plumbers unless food prep involved; enforced by county health depts.

No permit needed unless special event; must comply with local noise codes during operations.

Required for all employers with four or more employees in South Carolina (S.C. Code § 42-1-40). Sole proprietors and partners may opt out, but must file Form WC-10. Corporate officers may also opt out under certain conditions. Plumbers with employees must carry coverage regardless of business type (LLC included).

Not legally required by South Carolina state law for plumbers. However, many municipalities, property owners, or general contractors may require it as a condition of contracting. Strongly recommended for risk management. Often bundled with other coverages in a Business Owner's Policy (BOP).

Not required by South Carolina law for licensed plumbers. However, it is strongly recommended to protect against claims of negligence, faulty work, or design errors. Some clients or contracts may require it. Not a substitute for general liability.

A $10,000 surety bond is required for all Plumbing Contractor licenses issued to individuals or business entities (including LLCs) in South Carolina. The bond protects consumers against violations of state plumbing regulations or financial loss due to contractor misconduct. Bond must be issued by a surety company licensed in South Carolina.

South Carolina law requires all motor vehicles operated on public roads to carry minimum liability insurance. This applies to business-owned or leased vehicles used for plumbing services. Personal auto policies typically exclude business use; a commercial auto policy is required. Coverage must be maintained continuously.

Not required by South Carolina law. However, if the plumbing business sells or installs products (e.g., water heaters, fixtures), it could be held liable for defective products. While not mandated, it may be included in general liability or umbrella policies. Recommended for risk mitigation.

Only applies to businesses that manufacture, distribute, or serve alcohol. Not relevant to plumbing businesses unless alcohol is served on-site (e.g., at a retail storefront with a bar), which is highly unlikely. Not required for standard plumbing operations.

While not legally required for a single-member LLC with no employees, obtaining an EIN is standard practice for opening business accounts and maintaining liability protection. Required for federal tax reporting if employees are hired.

As an LLC, the business is typically treated as a disregarded entity for federal tax purposes (single-member) or partnership (multi-member), requiring owners to report profits/losses on personal returns. Self-employment tax applies to net earnings from self-employment. Estimated tax payments required if expected tax liability is $1,000 or more.

Federal OSHA requires employers to provide a safe workplace, including hazard communication training, injury and illness recordkeeping (if applicable), and compliance with general safety standards (e.g., fall protection, electrical safety). Employers with 10 or fewer employees are generally exempt from routine recordkeeping but must still comply with safety rules.

ADA requires that businesses serving the public ensure accessibility to goods and services. For plumbers, this applies only if they maintain a physical location customers visit. Mobile-only plumbers with no customer-facing premises have limited obligations. Includes communication with customers with disabilities.

Required for any firm that performs renovation, repair, or painting that disturbs lead-based paint in pre-1978 housing or child-occupied facilities. Includes tasks like removing pipes, fixtures, or walls. Firms must be EPA-certified, use certified renovators, follow lead-safe work practices, and provide EPA pamphlet "Renovate Right." Applies even if plumbing is primary service.

FTC enforces truth-in-advertising laws. Plumbers must ensure all claims (e.g., "licensed," "fast service," "lowest price") are truthful, not misleading, and substantiated. Applies to websites, social media, and local ads. Also includes compliance with the FTC's Cooling-Off Rule if door-to-door sales are conducted (right to cancel within 3 days).

All U.S. employers must complete Form I-9 to verify identity and work authorization for each employee. Must be retained for 3 years after hire date or 1 year after employment ends, whichever is later. E-Verify is not required federally unless contracting with federal agencies.

FLSA sets federal minimum wage ($7.25/hour), overtime pay (1.5x regular rate after 40 hours/week), recordkeeping, and child labor standards. Applies to plumbers with employees regardless of business size. Independent contractor classification must be accurate to avoid misclassification penalties.

Requires eligible employees to receive up to 12 weeks of unpaid, job-protected leave per year for qualifying medical or family reasons. Most small plumbing LLCs will not meet the 50-employee threshold, but must comply if they grow to that size.

There is no federal licensing requirement for plumbers. Licensing is managed at the state or local level. Federal agencies such as FDA, ATF, FCC, DOT, and FAA do not regulate standard plumbing services.

All LLCs registered in South Carolina must file an annual report by April 1 each year. The report confirms business information such as principal office address, registered agent, and management structure. No fee is charged if filed online before the deadline.

Plumbing licenses are issued to individuals, not businesses. Licensees must renew every two years by December 31 of odd-numbered years. The business must ensure all employed plumbers maintain valid licenses. Online renewal available at https://llr.sc.gov/plumbing/Renewal.htm

Licensed plumbers must complete 6 hours of approved continuing education per biennium, including at least 2 hours in code updates. Courses must be approved by the Board. Documentation must be retained for at least 4 years.

Employers must file Form 941 each quarter to report federal income tax, Social Security, and Medicare withheld from employees’ wages, and the employer’s share of Social Security and Medicare taxes.

Employers must file Form SC SD-100 quarterly to report and remit state income taxes withheld from employees. Most employers in SC are required to withhold.

LLC owners taxed as sole proprietors or partners must make quarterly estimated tax payments for federal income and self-employment taxes using Form 1040-ES.

Self-employed individuals must make quarterly estimated tax payments for South Carolina personal income tax using Form SC1040-ES.

Form 940 reports Federal Unemployment Tax Act (FUTA) tax. Due annually. Most small employers qualify for credit reducing effective rate to 0.6% of first $7,000 in wages per employee.

Employers must file quarterly unemployment tax returns and pay tax on first $8,000 in wages per employee. New employers typically pay 2.7%.

Licensed plumbers must display their current license certificate at the business location or carry it when working in the field. The license must be available for inspection upon request.

Employers must display current federal posters including the Fair Labor Standards Act (FLSA), Family and Medical Leave Act (FMLA), and OSHA Workplace Safety. South Carolina does not require additional state-specific posters beyond federal mandates.

Plumbing contractors with 11 or more employees must maintain OSHA injury and illness logs. Form 300A must be posted from February 1 to April 30 each year. Records must be retained for 5 years.

Many counties and cities in South Carolina require a local business license or occupational tax receipt. Renewal deadlines and fees vary (e.g., Greenville: due January 31; Charleston: due March 1). Contact local treasurer’s office for specifics.

Businesses must keep tax records for at least 3 years from filing date. Employment tax records must be kept for at least 4 years. South Carolina Board of Plumbing requires licensed plumbers to retain CE completion records for 4 years.