Gravel Driveways on Sandy Lots in Shallotte, NC

A gravel driveway on a sandy lot around Shallotte has three pieces, and each one answers to someone different: the connection at the road, the pipe under it in the roadside ditch, and the stone bed you actually drive on. Here's who decides each piece in southern Brunswick County, how stone behaves on loose sand and wet flats, how a drive counts toward stormwater and CAMA limits, and what gravel driveways cost by national published figures.

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Who decides which part

A state road and its ditch: NCDOT District 3, Wilmington: (910) 398-9100
A town street: That town's planning or public works office
A private subdivision road: The HOA or developer, under the covenants
Where the drive can't go: Environmental Health (septic): 910-253-2150

Piece one: the connection at the road

Start by finding out who maintains the road in front of the lot. Brunswick County falls in NCDOT's Highway Division 3, and its District 3 office covers Brunswick and New Hanover counties from 5911 Oleander Drive, Suite 101, in Wilmington, (910) 398-9100, according to NCDOT's staff directory. The department's Brunswick County maintenance unit is based just north of Shallotte.

For one house, NCDOT's Policy on Street and Driveway Access (July 2003) says "PERMITS will normally not be required for a single residence." It still encourages a call to the District Engineer about safety and design and "to arrange for installation of driveway pipe." NCDOT's driveway permit FAQ ties permits to developing property, changing its use, or altering existing access, with no fee to apply, so a shared drive for a lot split or a business belongs in that conversation. On a town street, the town sets the rules; the permits guide lists each town hall.

Piece two: the pipe in the ditch

Where a drive has to cross a state road's side ditch, the policy calls for "an approved pipe size" to be installed. Citing the state's driveway pipe rule (19A NCAC 02D .0421), it then sets out how that works for single-family residential property:

NCDOT installs the pipe at its own expense "if the pipe is furnished and delivered to the installation site by the property owner at the property owner's expense."
The District Engineer sizes it to carry the ditch's flow, between 15 and 48 inches inside diameter unless directed otherwise.
"The minimum length of pipe to be installed shall be 20 feet."
The District Engineer keeps the list of approved pipe materials.
If environmental permits are needed, the owner gets them and installs the pipe.
If it's crushed later, "For single-family residences, the NCDOT will provide new pipe to replace damaged pipe."

So don't buy pipe until District 3 gives you the size. Too small a pipe backs water up the ditch onto your lot and the neighbor's. The yard drainage guide covers water on the rest of the lot.

Piece three: stone on sand

Sand drains well, but loose sand shifts under a loaded truck and wet sand swallows stone. On low flats, a drive built flush with the ground holds water in its own ruts. What helps:

Grub the line. Stumps and roots come out under the drive. Buried wood rots and leaves soft spots. See stump grinding and removal.
Build it up a little and crown it, so the surface sheds water to both sides instead of holding it.
Ask about fabric. A geotextile under the stone keeps it from working down into the sand.
Choose the stone for the job. Crusher run, crushed stone with the fines left in, packs into a firm surface. Washed #57 stone stays loose and lets water through, and it matters for stormwater limits (below).

What limits a drive on a coastal lot

Built-upon area. North Carolina law (G.S. 143-214.7D) says that for state or local stormwater programs, "A surface of number 57 stone, as designated by the American Society for Testing and Materials, laid at least four inches thick over a geotextile fabric" isn't counted as built-upon area. Crusher run isn't on that list. The same law bars local governments from defining built-upon area or impervious surface in a way that conflicts with it, but town caps still apply: Sunset Beach caps residential impervious surface at 45 percent of the lot in most districts, so ask the town ((910) 579-6297) how your drive counts before you pick the stone.

Subdivision permits. DCM's minor permit instructions warn that a lot's impervious allowance may be "limited by the conditions of the subdivision's State Stormwater Management Permit." Ask the HOA or developer for your lot's number.

Fill and the flood map. Raising a drive above wet ground takes fill. Outside town limits, the county's stormwater permit starts when grading or fill changes the ground's elevation by more than four inches, and in a mapped flood zone, fill needs a floodplain development permit first.

The marsh. Within 75 feet of normal high water along the marsh or estuarine shoreline, a driveway is CAMA development, and the minor permit application asks for the total square feet of impervious surface you'll create. Marsh-side and waterfront lots explains who issues permits in each town.

The septic system. Route the drive, and the stone trucks, around the drainfield and repair area. State rules don't allow soil compaction there, and the state's homeowner factsheet says plainly, "Don't drive or park vehicles over the septic system."

What a gravel driveway costs

HomeServe's national gravel driveway cost guide (October 2025) gives these figures:

$1.25 to $3 per square foot, "including the cost of equipment and professional installation."
About $4,000 to $6,000 for a professionally installed 100-foot gravel driveway.
$700 to $2,500 for site preparation (grading, excavation, and clearing), with tree removal adding $150 to $2,000 or more.
Crusher run or road base at $24 to $34 a ton; #57 stone at $120 to $255 a ton delivered.

As a rough check, a drive 12 feet wide and 150 feet long is 1,800 square feet, which comes to $2,250 to $5,400 at those per-foot rates (our arithmetic). On a state road, add the pipe you buy for NCDOT to install. Fill to raise a wet stretch, fabric, and grubbing stumps are the usual extras, so ask for each on its own line. All of these are national figures; the written quote from a contractor who has walked your lot is what counts.

Driveway questions

Who buys the driveway pipe, the owner or NCDOT?

For a single-family lot on a state road, the owner buys and delivers it and NCDOT installs it, sized by District 3. Call before ordering.

Will the apron at the road have to be paved?

NCDOT's policy requires paved turnouts on connections that need a permanent permit and calls gravel there "not recommended." A single house usually needs no permit, so ask District 3 what it expects at your entrance.

Should the gravel go in before the house is built?

A stone construction entrance usually goes in early, with the erosion control, and the finished drive goes on top later. Clearing a house site covers the order.

Does a gravel drive count against the lot's impervious limit?

For stormwater programs, #57 stone four inches deep over fabric doesn't; crusher run gets no such exemption. Ask the town how its zoning cap counts it.

How we help

Give us the road the lot is on, about how long the drive will run, and whether there's a ditch, wet ground, or marsh along the way. Call or send a short request, and one independent contractor who works in southern Brunswick County gets it, looks at the route, and quotes it in writing. Hiring them is your call, and there's no fee for the referral.

Want a local contractor to walk your land?

Call or send a short request. There's no charge for the referral.