When You Need a Permit for Concrete Work in North Carolina

North Carolina permitting for residential concrete is handled at the county or municipal level, not the state, so the exact process depends on where you live. What follows is what's uniform across NC jurisdictions in 2026 — the rules that hold regardless of which county you're in.

Right-of-way work always requires a permit. Any concrete work that touches the public right-of-way — a new driveway apron, a sidewalk tie-in, a curb cut — requires a driveway apron or ROW permit from the local DOT or public works office. This is the most commonly missed permit and the one most likely to result in a stop-work order.

Private-property flatwork usually doesn't. A patio, sidewalk, or back-yard slab poured entirely on your property typically doesn't require a permit under NC building code, provided it's not over 30 inches high above grade and doesn't support a structure. This is where "no permit needed" becomes an honest answer.

Retaining walls over 4 feet always do. Any retaining wall over 4 feet in height, measured from the bottom of the footing to the top of the wall, requires a permit and stamped engineering across every jurisdiction in NC. Below 4 feet, most jurisdictions exempt it, but a few still require review — always ask.

Foundation work always requires a permit and inspection. New foundations, foundation repairs, and any pour that becomes structural for a dwelling requires a permit, engineering review where applicable, and a passing inspection. There is no jurisdiction in NC where foundation work is exempt.

Slab-supported structures loop back into permits. If your patio is going to eventually support a covered pergola, a screen porch, or a permanent grill enclosure, most NC jurisdictions require the slab permit at the same time as the structure permit — you can't quietly pour the slab and permit the porch later. That's a common surprise.

Slope and coastal overlays add requirements. In the higher-elevation counties, any pour on a lot with significant slope requires an erosion control plan on top of the building permit — plan for an extra 3-4 weeks of review. Along the coast, slabs that will support a lifted structure need a wind-load engineering review to comply with CAMA requirements.

When your contractor pulls the permit vs when you do. In North Carolina, a licensed general contractor or a licensed concrete contractor can pull the permit as the responsible party. If the pro asks you to pull the permit as the homeowner, that's a signal — it means they don't have the license the job requires, or they don't want their name on the inspection record. Both are red flags.

If the pro can't tell you within 5 minutes whether your project needs a permit, they haven't done work in your county recently.