Do I need a permit for plumbing fixture or repiping in Unincorporated Gwinnett County?

Yes. In Georgia, plumbing fixture or repiping generally requires a permit, and Unincorporated Gwinnett County is no exception.

Repiping or moving supply and drain lines requires a plumbing permit; a simple like-for-like fixture swap (for example a faucet) using existing connections is often exempt, but confirm locally. Concealed piping must be inspected before walls are closed, so schedule the rough inspection before covering the work. Gwinnett County's own permitting office is the Gwinnett County Planning and Development, reachable on 678-518-6020 at https://www.gwinnettcounty.com/government/departments/planning-development/services/building-services. Its online permit portal is https://aca-prod.accela.com/gwinnett/welcome.aspx. It issues permits for the unincorporated county. If your city does not run its own building department, and many smaller Georgia municipalities do not, this is the office that will handle the job. The rough inspection has to happen before walls are closed, so confirm scheduling lead time when you pull the permit. Under Gwinnett County Construction Code 106.4 E, stopping leaks and clearing stoppages need no permit, but when a concealed drain, water, soil, waste or vent pipe becomes defective and is replaced with new material, the work is new work that needs a permit and inspection. Under 106.4.2, ordinary repairs never include adding, altering, replacing or relocating water supply, sewer, drainage, gas, soil, waste or vent piping.