The new-construction lane
New septic installation in Cherokee, Forsyth, and Hall counties
On a septic-served lot in North Georgia, the septic permit comes before the building permit, which makes the county soil evaluation the first real milestone of the whole build. Get it early and the rest of the project schedules around facts. North Atlanta Septic Pros connects owners and builders with independent licensed septic contractors who install systems in these three counties and file these permits as routine work.
The lot questions come first
Before any design work, two planning numbers frame what a lot can do. Georgia DPH's recommended minimums run about one acre where the home will also have a well and about half an acre on public water, per the GA DPH onsite sewage program, and county zoning applies its own layer on top. Setbacks from wells, property lines, streams, and the house then carve up what remains. A lot that passes all of that on paper still has to pass in the dirt: the county evaluation reads the actual soil profile, and in this part of Georgia that profile is usually Cecil-series red clay, explained horizon by horizon in the Georgia clay soils guide.
Growth is the other planning fact. Cherokee (about 299,000 people) and Forsyth (about 282,000) each grew about 2.4 percent in the year ending April 2025, per ARC estimates, and a meaningful share of that construction happens beyond the sewer lines. If you are building out here, you are probably building on septic, and the counties process these permits every week.
Two pieces of the site plan deserve extra care. If the lot will also carry a well, the required separations between well, tank, and field shrink the usable ground faster than most owners expect, which is exactly why the DPH minimums are larger for well-served lots. And the reserve area, the ground held aside for a future replacement field, is the part of the plan owners regret ignoring: a reserve buried under a later driveway or outbuilding turns an ordinary drainfield replacement decades from now into an engineered-system project. Place it deliberately while the lot is still empty.
Soil evaluation, then design, then permit
The county environmental health office evaluates the site and soil as part of the permit under DPH Rules Chapter 511-3-1. Where the profile is straightforward, a conventional tank and absorption field gets designed from the DPH manual. Where the clay is heavy or the lot is tight, the rules bring in certified soil classifiers or engineers, and the design may move to an engineered or alternative system. UGA Extension's Bulletin 1535 is the reference for why: measured saturated hydraulic conductivity, not assumption, is what sizes an absorption field correctly in Piedmont soils.
From there the sequence is the standard county path: permit issued, certified contractor installs, county inspects while the work is open, and the approved drawing goes in the county record. The office-by-office detail, including Cherokee's permit-before-Development-Service-Center order and Hall's morning inspection windows, lives in the North Georgia septic permits guide.
One buying note: on new construction it is tempting to treat the septic system as a line item inside the build. It is worth a direct conversation with the septic contractor anyway, because the system's location and type constrain the driveway, the pool you might want later, and any future drainfield replacement, which is easiest when the original install left a usable reserve area.
Verify your septic contractor in North Georgia
Georgia certifies septic installers and pumpers at the state level. Under DPH Rules Chapter 511-3-1, certification runs through the Department of Public Health: a certification exam scored out of 100 with 70 required to pass, company certification fees of $400 for installing and $400 for pumping, and continuing education each cycle (eight units for installers, six for pumpers). Every certification expires on February 28 of even-numbered years, so a current card is a recent card. The county environmental health office handles the other half: it evaluates your site and soil and issues the permit before any work starts. Ask for your contractor's DPH certification; a certified contractor expects the question.
Three questions to ask before you hire
- May I see your current DPH certification?
- Which of us files for the permit at the county environmental health office?
- Will the county inspect this work before it is covered up?
Sources: Georgia DPH installer and pumper certification program and GA DPH Rules Chapter 511-3-1.
Frequently Asked Questions
How big does my lot need to be for a septic system?
Georgia DPH recommends minimums of about one acre where the home also has a well and about half an acre on public water, and each county applies its own zoning on top. Treat those as planning numbers, not promises: the county site evaluation, setbacks, and the soil itself decide what a specific lot can carry.
Which comes first, the septic permit or the building permit?
The septic permit. Hall County says building permit applicants on septic-served property must first come through environmental health review, Cherokee expects the septic permit before the Development Service Center application, and the state rules put system approval with the county board of health before construction.
Who designs the system?
For a conventional system, the county evaluation plus the contractor working from the DPH manual covers it. Where the soil or the site is difficult, the state rules bring in a certified soil classifier, engineer, or geologist, and alternative system designs need department approval. Your contractor should tell you early which path your lot is on.
How long does an installation take?
Only Forsyth publishes an expectation, 20 business days or more for an application or review; Cherokee and Hall publish none. Beyond that the honest answer runs in stages: the site and soil evaluation is the long pole, the permit follows a passing evaluation, the dig itself is usually the short part, and the county inspects before anything is covered. Hall County books install inspections into same-day morning windows, which your contractor plans around.
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