Zoning, building permits and septic rules in Berkeley Lake, Georgia

At a glance

Zoning

City zoning (Chapter 78) with R-100 and RMD residential districts¹

Building permit

Applied for at Berkeley Lake city hall; permits expire 12 months after issue²

Septic

Septic permit from Gwinnett Environmental Health, which the city asks for with a building application²

RV living

Prohibited on residential lots³

Manufactured homes

R-100 allows single-family detached homes except mobile and modular homes⁴

Minimum lot (R-100)

28,050 sq ft for lots not on Lake Berkeley⁵

Front setback (R-100)

65 ft from the edge of the road⁶

Who to call

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Does Berkeley Lake, GA have zoning?

Yes. Berkeley Lake adopts its own zoning ordinance as Chapter 78 of the city code, with residential districts named R-100 and RMD¹. R-100 is the single-family district, and an RMD multifamily district must cover at least 10 acres to be designated⁷. We reviewed only the residential districts, so ask city hall about commercial districts and the zoning map⁷.

In R-100 the permitted use is single-family detached dwellings, except mobile homes and modular homes⁴. Georgia leaves tiny-home siting to local zoning, and we found no tiny-home provision in the city's R-100 rules, so confirm with city hall before planning one⁸.

Berkeley Lake sits inside Gwinnett County, but Gwinnett's zoning ordinance covers only unincorporated land⁹. The county's zoning does not set the rules inside Berkeley Lake.

What are the lot size, setback and height rules in Berkeley Lake?

In the R-100 district, a lot that does not adjoin Lake Berkeley needs at least 28,050 sq ft and 200 ft of depth⁵. Lots on the lake follow frontage and width rules instead of the area minimum⁵.

R-100 setbacks are 65 ft from the edge of the road at the front, 40 ft at the rear (measured from the full-pool shoreline on lakefront lots), and 12.5 ft at the side⁶. Corner lots need 25 ft from the bordering road⁶. Maximum lot coverage is 30 percent, and building coverage is capped at 15 percent, or 20 percent where the table's height limits are met¹⁰. Principal buildings on a level lot may be up to 35 ft tall, and up to 45 ft at one end of a sloping lot¹¹.

Accessory structures have their own setbacks in the city's accessory-use section⁶.

Do you need a building permit in Berkeley Lake, and who issues it?

New construction inside Berkeley Lake starts with a City of Berkeley Lake building permit application, filed at city hall². The city's checklist asks for 2 sets of plans drawn to scale². Building permits expire 12 months after issue², and the city asks applicants to allow a minimum of 5 business days for review². Questions about building codes go to the city's building inspector².

An owner who acts as the general contractor submits an owner's affidavit that all federal, state and local codes will be met². Georgia does not require a license to build your own home, but the owner must still follow local building codes and regulations¹².

Gwinnett County's Planning and Development department issues building permits for unincorporated Gwinnett County, not for land inside city limits¹³. We could not confirm the city's rules on building inspections, certificates of occupancy or fees, so ask city hall for the current fee schedule.

How do septic permits work inside Berkeley Lake?

Berkeley Lake's building permit checklist requires a copy of the septic permit from Gwinnett Environmental Health for any property served by a septic system². Georgia county boards of health issue septic construction permits, and a permit is valid for no more than 12 months¹⁴. In Gwinnett County, GNR Environmental Health requires a Level 3 soil report before it permits new systems, repairs and qualifying additions¹⁵.

On lakefront lots, the septic setback is 75 ft from the shoreline at full pool⁶. Georgia also requires connection to a public or community sewer when one is available within 200 feet of the property line¹⁶. For a new sewer tap, the city asks for Gwinnett County Water Resources approval².

Gwinnett County soils are mixed: about 55.9% of the county's soils are rated not limited for a conventional drain field¹⁷. That is a county-wide figure, so expect a site evaluation on any individual lot. Gwinnett Environmental Health handles local procedures¹⁸.

Can you live in an RV or tiny home in Berkeley Lake?

No for RVs. Berkeley Lake's code says motorhomes, campers and travel trailers may not be used as living, sleeping or housekeeping quarters on a residential lot³. An RV may be parked on a residential lot for no more than 24 hours while it is being loaded or unloaded³. A stored RV must be under 26 ft long and 9 ft tall, on a paved surface, and set back from lot lines and Lake Berkeley³. That also rules out living in an RV while you build.

Tiny homes: Georgia treats a site-built or modular tiny home as an ordinary dwelling under the building codes, and local zoning decides where it can be sited⁸. We did not find a tiny-home rule in Berkeley Lake's code, so ask city hall whether a given design fits the single-family district⁸.

Manufactured homes are not a workaround: R-100 excludes mobile homes and modular homes⁴.

Building a home in Berkeley Lake: the steps, in order

1. Confirm the district and setbacks with city hall, and note whether the lot adjoins Lake Berkeley⁵.
2. Check flood status: new principal residences are barred in the future-conditions floodplain unless the city's floodplain requirements are met¹⁹.
3. If the lot is within 2,000 feet of the Chattahoochee River, get Atlanta Regional Commission approval before the city issues a permit².
4. Get a septic permit from Gwinnett Environmental Health if no sewer serves the lot², or a Gwinnett County Water Resources tap approval if you connect to water².
5. File the city building permit application with 2 sets of plans².
6. Allow a minimum of 5 business days for the city's plan review².
7. Build to the state minimum codes, which apply whether or not a city enforces them locally²⁰.

What stays with Gwinnett County, and what to check before you buy in Berkeley Lake?

Septic permits and inspections stay with Gwinnett Environmental Health, and water and sewer taps with Gwinnett County Water Resources². For land outside the city limits, the rules differ: see the Gwinnett County page for unincorporated Gwinnett.

Before buying, check the floodplain rule above¹⁹ and the lakefront setbacks⁶. Short-term rentals are limited: in the RMD district the city requires an annual permit from the city clerk, for owner-occupiers only, with listings capped at 180 days a year²¹. We could not confirm the rule for the single-family district²¹.

Gwinnett County's effective property tax rate is about 1%²², and the median bill is $3,381 a year²³.

Watch-outs

• We could not confirm Berkeley Lake's building code adoption, inspection process, fees or driveway permit rules, so ask the city's building inspector before you budget².
• The city's building permit checklist we found is an older revision of the form, so confirm current requirements with city hall².
• Do not rely on Gwinnett County's zoning or building permit rules for a Berkeley Lake lot, because the county's ordinance covers only unincorporated land⁹.
• An RV cannot be used as living quarters on a Berkeley Lake residential lot, even temporarily during construction³.

Sources

1. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
2. City of Berkeley Lake (city hall and building inspector) (berkeleylakega.sophicity.com)
3. Berkeley Lake Code Sec. 78-89 Accessory uses or structures (Berkeley Lake), quoted and re-checked
4. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
5. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
6. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
7. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
8. Georgia Tiny House Fact Sheet (Georgia statewide rule), quoted and re-checked
9. Unified Development Ordinance, Title 1, quoted and re-checked
10. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
11. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
12. Residential and Commercial General Contractors Frequently Asked Questions (Georgia statewide rule), quoted and re-checked
13. Building Permits Issued, quoted and re-checked
14. Manual for On-Site Sewage Management Systems (Georgia statewide rule), quoted and re-checked
15. Septic Systems, quoted and re-checked
16. GA DPH Onsite Sewage Manual (Georgia statewide rule), quoted and re-checked
17. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
18. Gwinnett Environmental Health Department (GNR Health) (gnrhealth.com)
19. Berkeley Lake Code Sec. 42-97 Provisions for flood damage reduction (Berkeley Lake), quoted and re-checked
20. Mandatory and Permissive State Codes (Georgia statewide rule), quoted and re-checked
21. Berkeley Lake Code Sec. 78-197 (R-100 area, yard, height regulations; Art. VIII residential districts) (Berkeley Lake), quoted and re-checked
22. Effective property tax rate: Bolthole Index county data
23. Median property tax bill: Bolthole Index county data

Written October 16, 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.