Published by Chris Townsend
Last updated Sep, 21 2025
How many approvals does it take to steer a 26-foot box truck through Charleston—or tow a century-old farmhouse from Summerville to Greenville without snapping a single utility line? In South Carolina, the correct answer depends on three factors: the weight of the load, its size after you strap it down, and the land you plan to cross. Household-goods carriers must carry a Class E Certificate issued by the Public Service Commission (PSC) and managed by the Office of Regulatory Staff (ORS). Oversize haulers deal with a different gatekeeper—the S.C. Department of Transportation (SCDOT) Oversize/Overweight (OS/OW) Permit Office—while anyone pulling an entire building faces a special set of “building-movement” rules. Add in federal USDOT regulations for interstate work and maritime licensing for overseas shipments, and the permit stack grows fast.
As a moving broker, Three Movers handles every sheet of that paperwork. We match you only with carriers that already meet South Carolina’s licensing rules, then secure route-specific OS/OW permits, certified pilot cars, and any local permissions your move demands. The result? A fully legal, insured move that hits each checkpoint on schedule—no roadside fines, no last-minute detours, and, most importantly, no stress on moving day.

1 │ Intrastate Household-Goods Movers
1.1 Licensing Authority
South Carolina regulates intrastate household moves through the PSC. Carriers must hold a Class E Certificate of Public Convenience and Necessity (PC&N) if they operate statewide, or a Certificate of Fit, Willing & Able (FWA) when they move solely within one city’s limits. ORS administers enforcement, audits, and insurance filings.
1.2 Application Steps
| Step | What the Carrier Does | Broker Assurance |
|---|---|---|
| Complete PSC application | Fill transportation cover sheet, pay $150 fee | Three Movers verifies filing status |
| Publish legal notice | Run ad in local paper for two consecutive weeks | We monitor publication proof |
| Attend PSC hearing | Show public need & safety fitness | We coach carriers on testimony |
| Obtain ORS safety clearance | Submit vehicle lists, safety plans | We confirm cab-card issuance |
| File tariffs | Post-hourly or mileage rates with ORS | Tariffs reviewed before quoting |
| Post insurance & bonds | $300 k liability, $50 k cargo min | Certificates stored in our database |
1.3 Cab Cards & Renewals
Each power unit must display an ORS cab card. Cards and certificates renew annually; carriers late on renewals face suspension. Three Movers tracks expiration dates and removes non-compliant fleets from its carrier pool automatically.
2 │ Oversize & Overweight Transport Permits
South Carolina’s base legal limits mirror most southeastern states:
| Dimension | Legal Limit |
|---|---|
| Width | 8 ft 6 in |
| Height | 13 ft 6 in |
| Overall Length (vehicle + load) | 75 ft |
| Gross Vehicle Weight (GVW) | 80,000 lb |
Anything larger or heavier requires an OS/OW permit from SCDOT.

2.1 Permit Options
| Permit | Validity | Typical Uses |
|---|---|---|
| Single-Trip | 5 travel days | One excavator or modular home |
| Annual | 12 months, fixed width ≤12 ft & ≤120,000 lb GVW | Contractors moving cranes statewide |
| Superload | Trip-specific, engineer review | Loads >16 ft wide or >180,000 lb |
| Self-Propelled Crane | One year, statewide | Rough-terrain crane transfers |
| Envelope Permit | Multiple loads that share identical dimensions | Portable classrooms |
2.2 Escort & Pilot-Car Rules
- Two-lane highways: one lead escort for widths 12 ft–14 ft; both lead + trail escorts above 14 ft or 110 ft length.
- Multi-lane highways: rear escort above 12 ft; lead escort added above 15 ft.
- Superloads may require South Carolina Highway Patrol escorts or utility bucket trucks.
Escort drivers must hold a valid SCDOT certification and maintain VHF/CB radio contact with the load at all times.
2.3 Travel Restrictions
- Daylight only for most loads; night travel allowed for widths ≤10 ft with proper lighting.
- Major curfews: I-26 & I-95 corridor on holiday weekends, Myrtle Beach during peak tourist season, and statewide during hurricane evacuations.
- Spring frosts: SCDOT may impose speed or weight limits on secondary roads; active permits cannot override frost restrictions.
2.4 Application Details
Permits are filed online via SCDOT’s Permit Connect portal. Carriers upload: load dimensions, axle weights, route, and USDOT number. Superloads add structural-analysis spreadsheets and bridge check reports. Three Movers pre-validates each submission to reduce permit rejections and delays.

3 │ Building & Structure Moves
Pulling a frame house or historical church down a South Carolina highway triggers stricter rules.
3.1 Building-Mover License
Carriers moving structures over public highways must:
- Hold a valid Class E Certificate (or FWA if strictly local).
- File a Building-Mover Permit application with SCDOT if any dimension exceeds 16 ft in width or 15 ft in height.
- Provide proof of $1 million liability and $100 k cargo coverage, plus workers’ compensation.
3.2 Route Surveys & Utility Coordination
- Route Survey: Required for heights over 16 ft or GVW above 180,000 lb. Survey maps note bridge clearances, power-line crossings, and tree-removal points.
- Utility Notices: Movers must give utilities ten business days to raise lines. Costs often prepaid or bonded.
- Performance Bond: Some counties demand a $25,000–$50,000 bond to cover road surface or sign damage.
Three Movers pairs you with structure-moving specialists who handle line-lift agreements and local road closures in one bundle.

4 │ Mobile & Manufactured Homes
Unlike site-built homes, manufactured homes also need a Moving Permit Decal issued by the county tax collector after verifying property-tax clearance. The decal must be affixed to the left front window or transport frame and remains valid for 30 days. Movers then secure an SCDOT OS/OW permit just like other oversize loads.
5 │ Interstate Moves (USDOT / FMCSA)
Crossing state lines for your move activates federal rules:
- USDOT Number and MC Authority for household goods.
- Minimum liability coverage: $750,000 ($1 million if passenger-carrier mixed).
- Cargo bond: $5,000/$10,000.
- Consumer-protection packet “Your Rights and Responsibilities When You Move.”
Three Movers’ compliance engine scans FMCSA databases nightly and blocks carriers that lapse in authority or insurance.
6 │ International & Coastal Moves
Moving overseas or to Puerto Rico adds another layer:
- Ocean Transportation Intermediary (OTI) License via the Federal Maritime Commission if the carrier issues an ocean bill of lading.
- Marine Cargo Insurance for full replacement value.
- Customs Paperwork: ISF filings (for imports), ACE e-manifests (for Canada), and wood-packing certificates.
Our brokerage contracts with FMC-licensed forwarders and tracks customs milestones to prevent port delays or demurrage charges.

7 │ Local & Utility Right-of-Way Permits
State permits do not grant blanket permission for city streets. Example hotspots:
- Charleston: Single-trip oversize permit ($50) plus police escort if load crosses the Ravenel Bridge between 6 a.m. and 9 a.m.
- Columbia: Oversize loads must avoid Gervais Street bridge during weekday rush; city barricade crews bill costs directly to carrier.
- Greenville County: Loads over 14 ft high on county roads require 48-hour notice to the Public Works Department.
Our local-permit tracker flags every municipality on your route, bundles fees, and schedules any police or bucket-truck escorts.
8 │ Insurance & Financial Responsibility
| Scenario | Minimum Coverage |
|---|---|
| PSC Class E intrastate | $300k auto liability / $50k cargo |
| Building mover | $1 M liability / $100k cargo |
| Standard OS/OW | Liability scaled to GVW (often $1 M) |
| Superload >180,000 lb | SCDOT may request $2–$5 M umbrella |
| Interstate HHG | $750k–$1 M liability / $5k-$10k cargo bond |
| International ocean | Marine policy to declared value |
Three Movers receives certificates straight from insurers and stores them on file—clients never chase paperwork.
9 │ Compliance & Recordkeeping
- Permit Display: Drivers must carry digital or paper copies; law enforcement can revoke a permit if documentation is missing.
- Daily Vehicle Inspections: Required for any power unit >10,001 lb engaging in interstate commerce or OS/OW intrastate hauls.
- Accident Reports: Property damage over $2,000 or any injury must be reported to ORS within 30 days and noted on the carrier’s safety profile.
- Tariff Updates: HHG carriers must re-file if rate increases exceed 10 percent in one calendar year.

Common Pitfalls & Brokerage Solutions
| Pitfall | How Three Movers Prevents It |
|---|---|
| Permit filed after truck dispatched | Automated workflow locks dispatch until permits are issued |
| Frost-season weight limits ignored | Our routing tool overlays SCDOT spring restriction maps |
| Escort vehicles uncertified | Database flags pilot-car certificates nearing expiry |
| Municipal permit forgotten | Local-permit calendar sends reminders 14 days ahead |
| Insurance lapses mid-trip | Continuous monitoring of insurer cancellation notices |
Quick-Reference Permit Checklist
- □ Class E or FWA Certificate (intrastate HHG)
- □ ORS Cab Cards attached to each power unit
- □ SCDOT OS/OW Permit (single-trip, annual, or superload)
- □ Certified Pilot Cars booked per width/length table
- □ Building-Mover Permit + county bonds (if relocating a structure)
- □ Mobile-Home Decal from county treasurer (if applicable)
- □ Municipal Oversize Permits (Charleston, Columbia, etc.)
- □ USDOT/MC Authority (interstate work)
- □ FMC OTI License & Marine Insurance (international)
- □ Insurance Certificates on file and current
- □ Tariff Posted and consumer packet ready (HHG carriers)
Why Book Through Three Movers?
- Total Compliance Oversight – We pre-screen every carrier for South Carolina licensing, insurance, and safety ratings.
- Permit Concierge – From SCDOT superload reviews to city police escorts, we handle paperwork end-to-end.
- Real-Time Tracking – Our portal notifies you the moment permits clear and pilot cars check in.
- Cost Transparency – Permit and escort fees are quoted up front; you’ll never see surprise surcharges.
- Stress-Free Service – Your focus stays on the new house or job, not on figuring out who raises the power lines.
Ready for a legally seamless South Carolina move? Reach out—our team will deliver a step-by-step permit timeline within one business day.
📚 Key Sources
- South Carolina ORS Transportation Division – Household Goods Carrier guidelines, Class E & FWA processes
- PSC Household Goods Application Packet & Tariff Filing rules (Chapter 103 regulations)
- SCDOT Oversize/Overweight Permit Office – permit types, validity, and fees
- SCDOT Pilot & Escort Vehicle requirements for oversize loads
- South Carolina Code of Laws § 31-17-320 – Mobile-home tax clearance and moving permit decal
- Governor’s Executive Order 2024-01 – emergency size/weight waivers and travel curfews for severe weather
(*All regulations reviewed and current as of June 2025.)