Dock permits on Hilton Head Island, step by step

A private dock on Hilton Head's tidal water needs approval at up to three levels of government, and sometimes a fourth from your community. Each office checks something different, and none of them signs off for the others. A state permit does not replace the Town permit, and a Town permit does not replace the state one.

The approvals at a glance

The state permit: SCDES Bureau of Coastal Management

South Carolina law defines the state's critical areas as coastal waters, tidelands, beaches, and beach and dune systems. SCDES lists docks, bulkheads, and footpaths among the common activities that need a critical area permit. A dock over marsh or a tidal creek falls in that area.

The permitting agency changed in 2024. On July 1, 2024, DHEC's environmental programs moved to the new SC Department of Environmental Services, and SCDES issues environmental permits from that date on. Permits DHEC issued earlier stay valid. Older documents, including some community guidelines, still say "OCRM" for the same program.

SCDES treats a private dock that involves no dredging as a minor activity. The application works like this:

• Fee. The non-refundable application fee is $250, or $150 for a dock with a walkway shorter than 100 feet.
• Drawings. The application drawings must come from a land surveyor, professional engineer, or landscape architect who holds a South Carolina license. SCDES does not accept hand drawings.
• Public notice. SCDES runs a 15-calendar-day public notice. The applicant also runs a one-day notice in a newspaper within fifteen days of the SCDES notice.
• Deadline to build. State regulations require the permit holder to finish work within five years of issuance. SCDES may extend an active permit for good cause shown by significant work progress, but an expired permit cannot be extended.

State law (S.C. Code § 48-39-150(C)) directs SCDES to act on a minor-development permit, which includes a private dock, within thirty days of filing. If someone quotes you a firm number of weeks, ask where it comes from. Treat the 15-day notice as the minimum.

The state's size and layout rules for the dock itself are in regulation R.30-12. The dock size rules guide covers them.

Federal: the Army Corps of Engineers

SCDES tells applicants to check with the U.S. Army Corps of Engineers for any additional authorization. Ask your contractor or the Corps which authorization, if any, applies to your project.

The local building permit

Within Town limits on Hilton Head Island, the Town issues building permits, not Beaufort County. The Town requires a permit for new construction, for changes to an existing building, and for any electrical, plumbing, or heating and cooling work, which covers lift motors and dock lighting.

• Who files. The Town says that in most cases the contractor you hire submits the application on your behalf.
• How. Applications go through the Town's Citizen Self Service portal, by email, or in person at Town Hall.
• Review time. The Town publishes a plan review target of 20 business days from a complete application and says initial reviews average around 9 to 10 days.
• Expiration. A Town permit expires if work doesn't start within six months of issue, or if work stops for six months.

SCDES notes that its permit doesn't relieve you of any other permit, and that local governments may require a dock to follow local codes or ordinances. The Town's zoning rules sit in its Land Management Ordinance, adopted January 1, 2020. Ask the Town which LMO provisions apply to your dock.

Off the island, the permit office changes. The Town of Bluffton and the City of Beaufort each issue their own building permits. Beaufort County issues permits in unincorporated areas such as Daufuskie Island and publishes a separate dock application through its Zoning department. The permits-by-place page has contacts for each.

Building codes

The Town lists the 2021 International Building Code and 2021 International Residential Code as adopted January 1, 2023. These are the statewide codes. The SC Building Codes Council has approved South Carolina modifications to the 2024 codes, published in the State Register on May 22, 2026. LLR has not posted an effective date, so ask the permit office which edition applies on the date you apply.

Doing the work yourself

The Town allows owners to do work on their own home. An owner who does so files an Unlicensed Residential Builder's Disclosure Statement with Beaufort County and cannot sell or rent the home for two years after the work is complete.

Community review

Many planned communities on Hilton Head have their own architectural review, and the order matters. In Sea Pines, the Architectural Review Board guidelines say no dock may be built without ARB approval, and the ARB holds a dock application until the state permit has been issued and Community Services Associates has approved it. That puts the ARB last in line, after the state.

Other communities may review before the state permit, after it, or not at all. Get your community's current guidelines before the drawings are final, so a design change from community review doesn't send you back to SCDES.

A typical order

Every project differs, but a common sequence on Hilton Head looks like this:

1. Look at the site at low tide and measure the creek width between the marsh edges.
2. Read your community's guidelines, if it has any.
3. Have the permit drawings prepared.
4. Apply to SCDES, and check whether the Corps needs to authorize the dock.
5. After the state permit, take the design through community review where your community requires it.
6. Apply for the Town building permit and any electrical permit.
7. Build within the permit deadlines, then schedule the Town's inspections.

Rules in motion

SCDES proposed changes to its dock regulations, including R.30-12.A(2), after a stakeholder workgroup that issued its final report in February 2026. After an information session on October 13, 2026, the agency paused those changes and cancelled the October 27 hearing. SCDES says the state's current dock regulations remain in effect. Check the agency's status page before you apply.

For storm damage, read rebuilding a dock after a storm. To describe your project, send a request.