Do I need a permit for interior remodeling in Guilford County?

It depends. Whether interior remodeling needs a permit in Guilford 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. Guilford County's own permitting office is the Guilford County Inspections Department, reachable on 336-641-3707 at https://www.guilfordcountync.gov/government/departments-and-agencies/inspections. Its online permit portal is https://citizenaccess.guilfordcountync.gov/energov_prod/selfservice#/home. 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. NCGS 160D-1110(c) exempts work of $40,000 or less in a single-family home unless it involves load-bearing structure, a change in plumbing design, or new or replaced heating, air conditioning, or electrical wiring or equipment (like-kind electrical devices and fixtures excepted). Guilford County permits remodels as Residential Building-Alteration/Upfit, with no plot plan required since the footprint does not change. The interior alteration fee is $125 for work valued up to $10,000 and $250 above that. A remodel in a Special Flood Hazard Area is reviewed by the county for substantial improvement (over 50 percent of the structure's value) and requires a Flood Development Permit.