Gwinnett County is one of Georgia's most active residential markets, which means its Planning and Development Department processes a high volume of building permits every year. The good news: the county has a well-developed online permit portal, clear thresholds, and a staff that's generally responsive to homeowner questions. The bad news: the rules are stricter than many neighboring counties, with some of the lowest shed permit thresholds in the metro area.
This guide covers everything a homeowner needs to know about getting a building permit in unincorporated Gwinnett County. If you live within a city or town — Lawrenceville, Duluth, Suwanee, Buford, etc. — contact your city's building department instead, as they have separate rules and processes.
What Requires a Permit in Gwinnett County
Here are the specific thresholds and requirements for the most common residential projects in unincorporated Gwinnett County:
Sheds in Gwinnett County: What You Need to Know
The 144 sq ft threshold in Gwinnett County is lower than many Georgia counties. A standard 12×12 shed is exactly 144 sq ft — at the threshold. A 12×12 shed requires a permit. A 10×14 (140 sq ft) does not. Keep this in mind when shopping for a pre-built shed.
Gwinnett County Shed Setback Requirements
Even if your shed is under 144 sq ft and permit-exempt, you must still comply with Gwinnett County's setback requirements for accessory structures:
- Rear yard: 5 feet from rear property line
- Side yard: 5 feet from side property line
- Front yard: Not permitted in the front yard setback area
- Distance from primary structure: At least 6 feet from the house
Setback measurements are from the foundation or footprint of the structure to the property line — not from the roof edge or overhang.
Shed Permit Fee in Gwinnett County
Gwinnett County calculates permit fees based on the valuation of the project. For a simple storage shed, the typical permit fee ranges from $50 to $150, depending on size and construction method. Pre-built metal sheds are on the lower end; wood-frame sheds with a concrete foundation are on the higher end. You'll pay the fee when you submit the application online.
Deck Permits in Gwinnett County
Gwinnett County requires a building permit for every deck — there is no size exemption. This is stricter than many neighboring counties. The requirement applies to:
- New decks attached to the house
- Freestanding decks in the yard
- Replacing or rebuilding an existing deck (even with the same footprint)
- Adding stairs to an existing deck
- Screened porches and covered decks
Decks require both a building permit and a separate electrical sub-permit if any lighting or electrical outlets are planned. Gwinnett County also requires a framing inspection during construction and a final inspection after completion before the permit closes.
Deck Permit Application Requirements
- Site plan showing deck location relative to property lines and house
- Construction drawings showing framing, joist size, post size, beam span, and ledger attachment detail
- Specifications for deck boards, railing height, and stair configuration
- Contractor's license number (if hiring a contractor) or Owner-Builder declaration
Fence Permits in Gwinnett County
Standard privacy fences up to 6 feet in height do not require a building permit in unincorporated Gwinnett County. However, you still need to follow zoning rules:
- Fences must be placed on your property — not on the property line itself without written agreement from the neighbor
- Corner lots have specific visibility triangle requirements that limit fence placement near the intersection
- Front yard fences are limited to 4 feet in height in most residential zones
- Fences over 6 feet require a zoning variance application, not a standard building permit
Before installing a fence, verify your property lines. Survey monuments (usually metal stakes or pins) should be present at corners. If you're not sure where your lines are, hire a licensed surveyor before construction.
How to Apply for a Building Permit in Gwinnett County
Gwinnett County has moved to an online permit application system. Here's the step-by-step process for a typical residential project:
- Create an account on the Gwinnett County Planning and Development online portal at gwinnettcounty.com.
- Select your permit type. For residential projects, choose "Residential Building Permit." For electrical work only, choose "Residential Electrical Permit."
- Complete the application form. You'll enter the property address, project description, estimated construction cost, and contractor information (if applicable).
- Upload required documents. At minimum: a site plan and construction drawings. The portal will specify what's needed for your project type.
- Pay the application fee. Gwinnett County accepts credit and debit cards online. Keep your receipt — you'll need the permit number to schedule inspections.
- Wait for review. Plan review typically takes 3–7 business days for residential projects. You'll receive a notification by email when the permit is approved or if corrections are needed.
- Print or download your permit. Post it visibly at the job site before work begins.
- Schedule inspections. Required inspections vary by project type. For a shed, you'll typically need a foundation/footing inspection (if applicable) and a final inspection. For a deck, you'll need a framing inspection and a final.
Common Reasons Gwinnett County Permit Applications Are Rejected
Based on the most common issues with residential permit applications, these are the problems that most frequently cause delays or rejections:
- Incomplete site plan: The site plan must show all property lines with dimensions, all existing structures, the proposed new structure, and setback dimensions from all property lines. A hand-drawn sketch is usually acceptable for simple sheds; decks typically require a scaled drawing.
- Missing contractor license number: If you're hiring a contractor, their Georgia license number and Gwinnett County registration must be included on the application.
- Setback violation: The proposed structure is too close to a property line. Always measure from the structure's foundation to the property line, not from the structure to your fence (which may not be on the property line).
- Insufficient construction details: Deck permit applications frequently lack the required joist span tables, ledger connection details, or post/beam specifications.
What Happens After Permit Approval
Once your permit is approved and you've begun construction, don't forget to schedule your inspections. In Gwinnett County, inspections must be requested at least 24 hours in advance through the online portal or by phone. Skipping required inspections means the permit remains open and "failed," which can show up in title searches when you sell your home.
After your final inspection passes, the permit will be closed as "Completed" in the county's system. Keep a copy of the permit card and inspection records with your home improvement documentation — they'll be useful if you refinance or sell.
Frequently Asked Questions — Gwinnett County
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Yes. A 12×16 shed is 192 square feet, which exceeds Gwinnett County's 144 sq ft threshold. A building permit is required. You'll need to submit a site plan and pay a permit fee, which is typically $50–$150 for a standard storage shed. After the permit is issued, schedule a final inspection once the shed is placed.
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Yes. Georgia allows property owners to pull an Owner-Builder permit and do the work themselves on their own primary residence. You'll complete an Owner-Builder declaration as part of the permit application. Be aware that you're taking on the same code-compliance responsibility that a licensed contractor would — the county inspectors will hold your work to the same standard. Some homeowners insurance policies limit coverage for owner-built work, so check with your insurer.
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In unincorporated Gwinnett County, accessory structures must be at least 5 feet from the rear and side property lines. Front yard placement is not permitted. Additionally, the shed must be at least 6 feet from the primary structure (your house). If you're in a neighborhood with a homeowners association, the HOA may have stricter setback rules — check your CC&Rs before building.
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For simple residential permits like sheds and fences, review typically takes 3–5 business days after a complete application is submitted. Decks and more complex projects may take 5–10 business days. If corrections are required, the clock resets. Submitting a complete application the first time — with an accurate site plan and all required documents — is the best way to avoid delays.
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Yes. Pergolas, gazebos, and similar open-frame structures require a building permit in Gwinnett County if they are attached to the house or if they exceed 144 sq ft in footprint. Even freestanding pergolas often require a permit because they typically have footings or posts set in the ground. Apply through the standard residential permit process.