The short answer: in unincorporated Forsyth County, a building permit is required for fences and walls over 6 feet tall. A standard 6-foot privacy fence sits right at that line. If your home is inside a city such as Cumming, Alpharetta, Milton, or Johns Creek, the city sets its own fence rules, so check with them instead.
Last checked: October 2026. Rules change and every property is different, so confirm with the county or your city before you build.
What Forsyth County's rules say
These are the main points from the county's Unified Development Code (Section 16-4.12, "Fences and walls") and its Residential Fence/Retaining Wall permit:
| Situation | What the county rules say |
|---|---|
| Fence or wall taller than 6 feet | A building permit is required. |
| Front yard fence or freestanding wall | Allowed up to 48 inches (4 feet) tall. |
| Fence in a required side or rear setback | Allowed up to 8 feet tall (over 6 feet needs the permit). |
| Retaining wall over 6 feet (footing to top) | Permit required, and the wall must be engineered. |
Two notes: your zoning district or an overlay area can add its own requirements, and the code exempts agricultural properties and lots that aren't part of a final platted subdivision from this particular section. If you're on a farm or rural lot, ask the county which rules apply to you.
What this means for a typical privacy fence
Most residential privacy fences are 6 feet tall, right at the permit threshold instead of over it. The things that can push a project over the line are the ones people don't always think about:
- 7- or 8-foot fences. Allowed in a side or rear setback, but anything over 6 feet needs a building permit.
- Toppers and lattice. A decorative lattice or cap adds to the total height. See our decorative fencing page for the styles we install.
- Sloped lots and retaining walls. A fence on or beside a retaining wall can end up taller than it looks. Ask the county how height is measured at your address.
Front yards have the lowest limit
The county allows fences and freestanding walls up to 48 inches tall in front yards. A solid 6-foot privacy fence generally can't run across the front of the house, so if you want a fence near the street, a shorter picket or ornamental style is the usual route. We install both wood and aluminum fencing. Corner lots can be treated differently, so ask before you finalize a layout.
If you live inside a city, different rules may apply
The rules above are for unincorporated Forsyth County. Cumming, Alpharetta, Milton, Johns Creek, and the other cities in our service area run their own zoning and permitting, and neighboring counties have theirs too. A "Cumming" mailing address doesn't always mean you're inside the city limits, since plenty of Cumming addresses are in unincorporated Forsyth County. Confirm which jurisdiction your parcel is in before you look up the rules.
Call 811 before the first post hole
Georgia 811 is a free service funded by member utility companies. You or your installer submit a ticket online or by dialing 811 at least 3 business days before digging, and the utilities send locators to mark the approximate location of underground lines with spray paint. Georgia 811 lists fence installation among the projects it covers. Whoever is digging should make the call, so ask your installer who is submitting the ticket.
Other things that matter as much as the permit
- Property lines. Confirming where your line is, usually with a survey, is the homeowner's job. A fence built on a neighbor's land is expensive to fix.
- Easements. Utility and drainage easements can limit where a fence can go, even inside your own lot.
- HOA approval. Separate from any permit. Read our HOA fence approval guide.
- Corner lots and driveways. These often have sight-line rules so fences don't block a driver's view.
- Pool fences. Barriers around a pool have their own safety requirements, separate from regular fence rules. Ask your county or city before you plan one.
How to apply when a permit is needed
- Confirm your property is in unincorporated Forsyth County (not inside a city).
- Find the "Residential Fence Retaining Wall Permit" on the county's Building Permitting page.
- Apply through the county's Customer Self-Service portal, or in person. A site plan showing where the fence will sit on your property is part of the application.
Not sure where your project stands? Mention it when you request your estimate and we'll talk it through with you.
Where to check the rules yourself
- Forsyth County Building Permitting (permit forms and portal)
- Forsyth County Code of Ordinances (Unified Development Code, Section 16-4.12, Fences and walls)
- Georgia 811: the 811 process
This guide is general information based on public sources, not legal advice. Codes get amended and individual properties can have extra conditions, so the county or your city has the final word.
Quick answers
Do I need a permit for a 6-foot wood privacy fence in Forsyth County?
Under the county's rules, the building permit requirement applies to fences and walls over 6 feet tall, so a standard 6-foot privacy fence sits at the threshold rather than over it. Always confirm for your own address, especially on a sloped lot, next to a retaining wall, or if you plan to add a topper.
How tall can a fence be in my front yard in Forsyth County?
Forsyth County's code allows fences and freestanding walls up to 48 inches (4 feet) tall in front yards. Your zoning district can add its own requirements, and corner lots can be treated differently, so check before you plan the layout.
How tall can a backyard fence be in Forsyth County?
Fences up to 8 feet tall are allowed in required side and rear setbacks, but anything over 6 feet needs a building permit.
Do I need to call 811 before installing a fence in Georgia?
Georgia 811 is a free service. It asks you to submit a ticket at least 3 business days before digging so utility companies can mark underground lines. It says notice isn't required for small, non-mechanized digging but encourages it anyway, and fence installation is on its list of projects.
Does the City of Cumming have different fence rules than Forsyth County?
Possibly. Incorporated cities like Cumming, Alpharetta, Milton, and Johns Creek regulate fences under their own ordinances. Also, a Cumming mailing address doesn't always mean you're inside the city limits, so confirm which jurisdiction your property is in first.
Does HOA approval replace a county fence permit?
No. They are separate. HOA approval is a private requirement from your community, and a county or city permit is a government requirement. You may need both. See our HOA fence approval guide.