Unincorporated Gwinnett County, Georgia requires building permits for construction and inspections during permitted work12. The county also applies zoning to unincorporated land3, while Gwinnett Environmental Health permits and inspects septic systems45. An owner may act as contractor, but only after meeting the county affidavit and eligibility conditions6.
At a glance
- Building permit
- Required for all construction in unincorporated Gwinnett County1
- Zoning
- Yes, under the county's Unified Development Ordinance7
- Septic
- Environmental Health permit and inspection required; Level 3 soil report required45
- Owner-builder exemption
- Conditional; proof of ownership and a signed county affidavit are required6
- Tiny-home occupancy
- County-specific occupancy and siting rules were not confirmed; ask Planning & Zoning8
- Subdivision
- Regulated; plans, permits, plats and fees may apply9
- Soils suitable for conventional septic
- 55.9% of the county's soils have no severe limits10
Who to call
Building permits
Gwinnett County Planning and Development — Building Services
Building permits, plan review and inspections for unincorporated Gwinnett County
75 Langley Drive, Lawrenceville, GA 30046
Zoning
Gwinnett County Planning and Development — Planning & Zoning
Zoning administration and the Unified Development Ordinance for unincorporated Gwinnett County
75 Langley Drive, Lawrenceville, GA 30046
Septic permits
Gwinnett Environmental Health Department (GNR Health)
Septic (onsite sewage) permitting and inspection, and well-driller site review, for unincorporated Gwinnett County
455 Grayson Hwy, Suite 600, Lawrenceville, GA 30046
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in unincorporated Gwinnett County?
Yes. Gwinnett County Planning and Development issues building permits for construction in unincorporated Gwinnett County after plan review under the county Construction Code1. Construction covered by a county permit must then pass inspections, scheduled through the ZIP Portal with the permit case number2. Georgia lets an owner build the owner's own home without holding a state contractor license, but that exemption does not waive county permits, inspections or zoning11. Gwinnett's owner-builder route requires proof of ownership and a signed Property Owner as Contractor Affidavit; the work must be solely for the owner and family, licensed trade subcontractors must file the applicable affidavits, and the owner cannot have used this route for property sold or transferred within the preceding 24 months measured from its certificate of occupancy6.
Who is the Gwinnett County building department and how do you reach them?
Gwinnett County Planning and Development's Building Services division handles building permits, plan review and inspections for unincorporated Gwinnett County12. The office is at 75 Langley Drive, Lawrenceville, GA 30046, can be reached at 770.822.8000, and lists P&[email protected] for building-permit questions12. During construction, schedule required inspections through the ZIP Portal and have the permit case number ready2. Planning & Zoning handles the parcel's zoning district, permitted use and Unified Development Ordinance questions; that office uses the same Langley Drive address, with phone 678.518.6000 and email P&[email protected]8.
Does Gwinnett County have zoning?
Yes. The Unified Development Ordinance divides unincorporated Gwinnett County into zoning districts and regulates land use, development, permits, landscaping and architectural standards3. That means a parcel's district and proposed use matter before plans are drawn; Georgia does not supply one uniform statewide district schedule13. We could not confirm a countywide answer for RV residence, temporary camping, tiny-home occupancy, manufactured-home occupancy, accessory dwellings, minimum dwelling size, minimum lot size, setbacks, lot coverage or building height. Ask Planning & Zoning for the parcel-specific district standards before treating any of those uses or dimensions as allowed8. Dividing land is also regulated: a small subdivision or subdivision may require development plans, plats, erosion-control, grading, stormwater, floodplain, water or sewer documents, plus permit and final-plat fees9.
How do septic and well permits work in Gwinnett County?
Gwinnett Environmental Health requires a Residential Septic System Permit Application, applicable county fees and a Level 3 soil report for a new system, a repair or an addition that modifies the system4. Site limitations or an alternative-system design can trigger an engineered site plan or Level 4 soil report, and the permit expires 12 months after issuance4. The contractor must call Environmental Health the day before inspection, and the system cannot be covered until the inspector confirms it passed and signs off on the final inspection5. Reach the Gwinnett Environmental Health Department at 455 Grayson Hwy, Suite 600, Lawrenceville, GA 30046 or 770.963.513214. About 55.9% of county soils have no severe limits for a conventional septic drain field, but parcel-level soil work still controls the actual design104. Georgia requires a well driller to contact the county health department for advance site review, but we could not confirm whether Gwinnett also requires a separate well-construction permit; ask Environmental Health before scheduling drilling1514.
Can you live in an RV or tiny home in Gwinnett County?
We could not confirm a general Gwinnett County rule allowing long-term RV residence or temporary camping on private land in the unincorporated area. Ask Planning & Zoning about the parcel, the duration and whether occupancy would occur before or during construction before relying on an RV as housing8. A tiny home is not automatically exempt from ordinary rules: Georgia's guidance addresses code-compliant modular or site-built tiny houses, while Gwinnett's zoning district still controls local siting and use163. We also could not confirm Gwinnett's current rules for tiny-home occupancy, manufactured-home occupancy or accessory dwellings, so Planning & Zoning should confirm those uses in writing for the specific parcel8. If the unit will use septic, the county permit, soil-report and inspection requirements still apply45.
Building a home in Gwinnett County: the steps, in order
- Confirm the parcel's zoning district, proposed use and dimensional standards with Planning & Zoning before design begins38.
- If the project divides land, ask whether subdivision plans, plats, supporting site documents and fees apply9.
- If public sewer is unavailable, obtain the Level 3 soil report and septic permit through Gwinnett Environmental Health; resolve any need for an engineered plan or Level 4 report414.
- Choose a contractor or confirm eligibility for the owner-builder route, then complete the ownership proof, county affidavit and trade-subcontractor paperwork6.
- Submit the construction plans and building-permit application to Building Services112.
- Schedule building inspections through the ZIP Portal using the permit case number2.
- Have the septic system inspected and approved before it is covered5.
- Confirm the county's certificate-of-occupancy requirements before moving in1712.
What to check before you buy land in Gwinnett County
Start with zoning, legal access, sewer availability, floodplain status and whether a proposed lot split will require subdivision review3918. For an unsewered parcel, budget for the required soil report and remember that about 55.9% of county soils have no severe limits for a conventional septic drain field; the parcel evaluation, not the countywide share, determines feasibility104. Gwinnett County has about 2,283 people per square mile, and the nearest city of 100,000 or more is about 18 miles from the county center, so buyers seeking isolation should verify surrounding development plans carefully1920. Farmland averages about $16,242 an acre, a typical home value is about $411,190, and the median annual property-tax bill is $3,381212223. Qualifying agricultural or timber property may use Georgia's conservation-use assessment at 40% of current-use value with a commitment of at least 10 years, but that tax treatment does not waive zoning or building requirements24.
Watch-outs
- We could not confirm a general right to live in an RV or camp temporarily on unincorporated land; ask Gwinnett County Planning & Zoning about the parcel and proposed duration before relying on either use8.
- A Gwinnett septic system must remain uncovered until the inspector confirms it passed and signs off on the final inspection5.
- We could not confirm whether Gwinnett requires a separate well-construction permit, so ask Environmental Health before scheduling a driller1415.
Sources
- Gwinnett County Planning and Development - Building Services (2026 county census)
- Planning and Development Building Services, quoted and re-checked
- Unified Development Ordinance, quoted and re-checked
- Septic Systems, quoted and re-checked
- Septic Inspection Scheduling Procedure, quoted and re-checked
- Planning and Development Building Services, quoted and re-checked
- Unified Development Ordinance (2026 county census)
- Gwinnett County Planning and Development — Planning & Zoning (gwinnettcounty.com)
- Planning and Development Building Services, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Residential and Commercial General Contractors Frequently Asked Questions (Georgia statewide rule), quoted and re-checked
- Gwinnett County Planning and Development — Building Services (gwinnettcounty.com)
- Governing Statutes, Regulations, and Guidance (Georgia statewide rule), quoted and re-checked
- Gwinnett Environmental Health Department (GNR Health) (gnrhealth.com)
- Water Well Standards (Georgia statewide rule), quoted and re-checked
- Georgia Tiny House Fact Sheet (Georgia statewide rule), quoted and re-checked
- Qualified Inspectors (Georgia statewide rule), quoted and re-checked
- Floodplain Management (Georgia statewide rule), quoted and re-checked
- Population density: Bolthole Index county data
- Distance to the nearest metro area: Bolthole Index county data
- Farmland value per acre (USDA census): Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Conservation Use Land Values (Georgia statewide rule), quoted and re-checked
Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.