Do I need a permit for interior remodeling in Unincorporated Duplin County?

It depends. Whether interior remodeling needs a permit in Unincorporated Duplin County comes down to the details of your project.

Purely cosmetic work (paint, flooring, cabinet swaps) on a one- or two-family dwelling costing $40,000 or less can fall under the NCGS 160D-1110 minor-work exemption, but moving or removing walls, or any electrical, plumbing, or mechanical change, requires a permit. Removing or altering a load-bearing wall is structural work and is never exempt. Duplin County's own permitting office is the Duplin County Building Inspections office, reachable on 910-296-2124 at https://www.duplinnc.gov/182/Building-Inspections. It issues permits for the unincorporated county. If your city does not run its own building department, this is the office that will handle the job, and that is more common in North Carolina than most states: the county is often the building authority even inside city limits, with the city handling only zoning. Under NCGS 160D-1110(c) work costing $40,000 or less can be exempt, but not where it adds or redesigns structure, plumbing, HVAC or electrical, so most remodels still need a permit. Cosmetic work costing $40,000 or less can fall under the NCGS 160D-1110(c) exemption, but it does not cover load-bearing changes, changes in plumbing design, or new or redesigned heating, air conditioning or electrical work. In a Special Flood Hazard Area, Duplin County tracks improvements over any one-year period, and work equal to 50 percent or more of the structure's market value is a substantial improvement that must meet current flood standards. Duplin County's permit application states that when an owner signs the owner affidavit to do the work personally, anyone else hired must be properly licensed and pull their own permit.