Driveway aprons and encroachment permits in Summerville — Town, county or SCDOT?
The apron is the one part of your driveway that belongs to somebody else's road. Four authorities permit it, each with a different form, fee and spec, and the Town won't issue the building permit for a new house until the right one has signed off.
Summerville straddles three counties, and its streets belong to four different road authorities. The Town maintains its own streets, and a driveway into one gets a Town encroachment permit — $25 under the Engineering fee schedule revised July 2026, also required for any work in a Town drainage easement. Dorchester County maintains the county roads outside the Town and the ones it never took over inside it; Berkeley County does the same for Nexton, Cane Bay and Carnes Crossroads; and SCDOT owns the state routes — US 17-A (Main Street), US 78, Dorchester Road (SC 642), Bacons Bridge Road (SC 165), SC 61 and US 176. The county and state encroachment permits are free, applied for online (SCDOT's is through EPPS), and valid 12 months. The Town's plot-plan checklist says what matters: for a new driveway on a SCDOT or county road, a copy of the approved encroachment permit must be provided before the building permit is issued. On a new house, the apron is the first permit, not the last.
The specs differ. SCDOT's Access and Roadside Management Standards want a low-volume residential driveway 10 to 24 feet wide with 15-foot minimum radius returns, a grade within eight percent for 40 feet off the shoulder, four-to-one side slopes on the pipe ends, and a final inspection that produces a letter of acceptance. Berkeley County, on its swale streets, wants the driveway pipe set at the ditch flow-line invert before any construction begins, and contractors carry a $25-a-year permit authorization card. Goose Creek keeps corner-lot driveways 40 feet from the property-line intersection. And everywhere, the apron must not alter the stormwater flow — which is what a crushed or undersized culvert does, and why the next Debby takes the apron with it. We work out whose road it is from SCDOT's street finder and the county maps, draw the apron to that authority's standard drawing, size and set the pipe at the invert with poured end sections, file the permit, and schedule the inspection. One job, one price, no bounced building permit.
What's included
Whose road, settled first
Town, Dorchester, Berkeley, Charleston County or SCDOT — confirmed from the state's street finder and the county maps before anything is drawn.
The permit, filed for you
Town $25 encroachment permit; free county and SCDOT permits through their online systems; valid 12 months; inspection scheduled.
Pipe at the invert
Culvert sized for the ditch, set at the flow-line before construction (Berkeley's rule), with poured concrete end sections.
Apron to spec
Width, radius returns, grade and side slopes to the authority's standard drawing; nothing that alters the stormwater flow.
Building-permit sequencing
On a new house, the approved encroachment permit goes in the Town's plot-plan package before the building permit is issued.
Final inspection
SCDOT's letter of acceptance or the county's sign-off in your file, so the driveway is on the record.
Apron and permit costs in the Summerville area
| Job | Typical price | Notes |
|---|---|---|
| Apron replacement, Town curb-and-gutter street | $1,200 – $2,800 | Plus $25 encroachment permit |
| Apron with culvert pipe and end sections, county or SCDOT swale road | $2,500 – $5,500 | Pipe size and length drive it; permit free |
| Culvert replacement only (crushed or undersized pipe) | $1,500 – $3,500 | Ditch regraded |
| Encroachment permit application and inspection handling | Included | Town, county or SCDOT |
| Second apron (circular drive) | Quoted | Only where frontage allows a second curb cut |
These are 2026 Summerville-area ranges so you can budget. Your written price is itemized — removal, base, thickness, reinforcement, finish, joints, the permit and its inspections — and good for 30 days.
Recent work
Questions we get about driveway aprons
Why won't the Town issue my building permit?
If your lot is on a county or SCDOT road, the Town's checklist requires the approved encroachment permit from that authority before the building permit. It's not a hold-up; it's the order. We file the apron first.
What does the encroachment permit cost?
Town streets, $25. Dorchester County, Berkeley County and SCDOT, nothing — the permits are free; the work isn't.
My apron sits on a ditch. Do I need a pipe?
Yes — a culvert sized for the ditch, set at the invert, with end sections, and the apron over it. Pouring over a crushed pipe blocks the drainage and the county will make you redo it.
Can I just pour the apron with the driveway and skip the permit?
You can, until the road authority's inspector or a neighbor notices, or until you sell and the title search turns up an unpermitted encroachment. The county's permit is free. There's no reason to skip it.
Who maintains the apron afterward?
On a county or state road, the apron and pipe stay the homeowner's responsibility even though they're in the right-of-way — that's what the permit says. Berkeley County has in the past installed driveway pipes off its roads itself; ask before you pay twice.