County guide
How to appeal a Gwinnett County, Georgia property tax assessment.
Gwinnett County accepts online appeals and written appeal letters, but the clock is tight: appeals must be filed within 45 days of the Annual Notice of Assessment date.
Deadline rule: Gwinnett says appeals filed online must be submitted by 11:59 p.m. on the deadline, and mailed appeals must be postmarked by the appeal deadline.
What to gather
- Annual Notice of Assessment with the notice date and appeal deadline.
- Property record from the Gwinnett property information search.
- Comparable neighborhood sales and any sales used to support the county value.
- Photos, invoices, estimates, or inspection notes showing condition problems.
Appeal grounds to consider
Gwinnett lists value, taxability, and uniformity as appeal grounds. For most homeowners, value and uniformity are the core arguments: would the property really sell for the county value, and is it assessed consistently with similar properties?
How Appeal Watch helps
Appeal Watch turns the Gwinnett workflow into a county adapter: deadline tracker, notice decoder, qPublic comp checklist, evidence index, filing statement, and hearing prep.