Permit or Not · All projects · Add a shed or small outbuilding · Georgia

Do I need a permit to add a shed or small outbuilding in Georgia?

It depends on the specifics

One-story detached sheds are typically exempt up to 200 square feet under the residential code — but the number people quote is 120, and both are right depending on which code your jurisdiction adopted.

How Georgia decides

Code adoption
Statewide adoption
Edition on file
2024 IRC
Local amendments
Permitted
Verified county offices
29 of Georgia’s counties

Georgia adopts a building code statewide, so there is a single baseline every local building department starts from. That makes the typical rule below a better guide here than it is in a home-rule state — but adoption is the floor, not the whole answer: local amendments are still permitted, and a city that has tightened a threshold is not obliged to advertise it.

The edition on file for Georgia is the 2024 IRC. Editions matter less than people expect for the exemption thresholds and more than people expect for how the work has to be built — and a jurisdiction that has not caught up to the state's edition is common rather than remarkable.

On file for Georgia: Statewide.

Adoption data from Code Adoption by State (Code Check), retrieved 2026-08-09, checked for Georgia on 2026-08-09. That source gives the edition and whether adoption binds statewide. It does not give per-project thresholds, and neither do we — the thresholds on this page are the model code's. Code Adoption by State →

What changes the answer

These thresholds come from the model code. Georgia lets its cities and counties amend the code they adopt, and an amended threshold is usually where people get caught.

IRC R105.2 exempts one-story detached accessory structures not exceeding 200 sq ft in the 2015, 2018 and 2021 editions. Earlier IRC editions and the IBC at 105.2 both say 120 sq ft, which is why the smaller figure is still quoted everywhere and is a common local amendment.

Why it matters

This is the single most contradictory number in residential permitting, and the contradiction is real rather than a matter of someone being wrong. Assuming the more generous figure is exactly how people end up with a structure that has to come down.

Confirm the requirement with the Georgia city or county building department that would issue the permit before you start.

Georgia county building departments we have verified

Permits in Georgia are issued by city and county building departments, not by the state. These 29 county permit pages have each been opened and checked, including a check that the page belongs to a county in Georgia — one in ten links in our first pass was a building department in another state entirely, so every entry here names the wording that identified it.

County offices. If your address sits inside a city or town, the city issues the permit and the county page will send you back out again. Checked 2026-08-25. We can resolve a ZIP to a proven county page for 275 Georgia ZIP codes; outside those, the checker falls back to a search rather than a guess.

This is the typical rule, not your answer

Nothing here is a permit decision, and it is not legal or engineering advice. No page can settle this for your address — permitting in Georgia is run by individual city and county building departments, and the one that covers your property is the only one whose answer binds anyone. Put a ZIP in and we will name the office that decides, and show you the county permit page where we have proven one.

More on add a shed or small outbuilding

The full add a shed or small outbuilding guide covers why the thresholds sit where they do, what catches people, and the narrower versions of this question — extending rather than building, repairing rather than replacing, and the cases that sit right on a limit.

Add a shed or small outbuilding in other states