Charleston is one of the South's fastest-growing commercial markets, driven by the Port of Charleston, the Boeing facility in North Charleston, MUSC Health, and a hospitality sector that is among the strongest in the Southeast. The King Street commercial corridor and the I-526 North Charleston office and industrial belt form the commercial cleaning geography. South Carolina's minimum wage follows the federal floor of $7.25/hr; the market wage for commercial janitors in the Charleston MSA runs $14–$16/hr, pushed upward by hospitality and manufacturing competition for service workers.

South Carolina Low Country Labor Cost Inputs

BLS OEWS May 2024 (SOC 37-2011) puts the Charleston-North Charleston MSA mean in the $14–$16/hr range. South Carolina minimum wage follows the federal $7.25 per the South Carolina Department of Labor, Licensing and Regulation. See the wages breakdown for the Charleston MSA.

Burden math on a $15/hr Charleston base: FICA 7.65% = $1.15; FUTA/SUTA ~2% = $0.30; South Carolina workers' comp for janitorial approximately $2–$2.80 per $100 payroll; health insurance ~$3/hr; vacation ~4%. Total burden: 27–32%, loaded rate near $19–$21/hr.

Sample Scope of Work: Class B Office Building

Hypothetical 35,000 sq ft Class B building on the Meeting Street corridor or the North Charleston I-526 business park. Low Country subtropical climate: year-round humidity, salt-air proximity, aggressive pest pressure, and hurricane season June through November.

Charleston Going Rates: Class B Office and Day Porter

Downtown Charleston and Meeting Street Class B commands $0.09–$0.13/sq ft/month. North Charleston I-526 corridor: $0.07–$0.11. Mount Pleasant suburban: $0.09–$0.13. Day-porter bill rate: $18/hr x 2.3 = approximately $41–$43/hr; 4-hr/day porter near $870/month. Use the day-porter ROI calculator. MUSC Health and Roper St. Francis accounts add +25–35%; King Street hospitality adds +20–30%.

South Carolina Licensing and Insurance Requirements

South Carolina requires a state business registration through the SC Secretary of State. Charleston and North Charleston each require a city business license. Workers' comp through the South Carolina Workers' Compensation Commission. GL minimums: $1M/$2M for Class B; $2M/$5M for MUSC and hospital accounts. Bonds of $10,000–$25,000 standard.

Union Presence and Prevailing Wage Triggers

Charleston janitorial union presence is minimal. South Carolina is a right-to-work state. Federal accounts at Joint Base Charleston (the largest US Air Force Base on the East Coast), the Naval Weapons Station, and federal office buildings require SCA compliance; pull wage determinations from SAM.gov. SCA guidance: dol.gov/agencies/whd/government-contracts/sca. Joint Base Charleston cleaning contracts require military base access credentials for all crew members.

What Charleston Buyers Expect in a Bid Response

1. Monthly base service: labor hours by position at loaded rate.
2. Humidity and pest protocol: mold-inhibiting chemistry specification and pest management approach stated explicitly.
3. Supplies schedule: unit prices; MUSC-affiliated accounts specify hospital-grade disinfectants.
4. Insurance allocation: GL, workers' comp, and bond pro-rated to account.
5. Overhead and margin: 12–18% overhead; 8–14% profit; pass-throughs quoted separately.

Bid Walk Checklist: Charleston MSA

1. Confirm Joint Base Charleston account type before bidding; air base, naval weapons station, and Naval Health Clinic Charleston accounts each have different access requirements.
2. Ask about MUSC or Roper St. Francis system affiliation for any medical office; hospital-affiliated clinics inherit hospital infection control standards.
3. Walk Low Country buildings for salt-air proximity; coastal accounts require more frequent exterior glass service than inland equivalents.
4. Note Boeing North Charleston facility cleaning; manufacturing cleaning has different scope and frequency requirements than office cleaning.

Joint Base Charleston and the Military Account Premium

Joint Base Charleston, which consolidates the former Charleston Air Force Base and Naval Weapons Station, is one of the largest military installations on the East Coast and generates significant cleaning contract volume. Military accounts carry SCA wage requirements, base-access security clearance requirements, and periodic re-bid cycles that are managed by the base contracting office rather than facilities management. BSCs entering the Joint Base Charleston market should engage with the base's small business office, obtain facility access credentials for core crew members, and price SCA-compliant labor from the published wage determination rather than local market rates. Use the Opora bid generator to price SCA accounts correctly and the account profitability auditor to track military account margin separately from commercial accounts.

Primary Sources

• BLS OEWS SOC 37-2011 (Janitors and Cleaners)
• South Carolina Department of Labor, Licensing and Regulation, Wage Standards
• South Carolina Workers' Compensation Commission
• South Carolina Secretary of State, Business Registration
• US DOL, Service Contract Act
• SAM.gov, SCA Wage Determinations

Build your Charleston accounts with the Opora bid generator. For MUSC Health accounts, see the healthcare cleaning hub. For King Street and Isle of Palms hospitality accounts, see the hospitality and retail cleaning hub.

By the Opora Editorial Team · Last updated: 2026