New Construction Plumbing in Atlanta, GA
Building on an older Atlanta lot means deciding early whether to reuse the old service lines, getting a new sewer tie-in inspected by the right department, and passing the underground test before any concrete.
When a new house replaces an older one, new construction plumbing starts at the property line, not at the foundation. The lot already has a sewer lateral and a water service placed and sized for a house that no longer exists, and whatever you decide about them shapes everything inside. On infill lots across Atlanta, this underground stage is where most of the surprises hide.
What the old house leaves behind
Demolition removes the structure, but the old building sewer usually stays in the ground, capped or snapped off near the former foundation. It may be clay or cast iron, it may be full of roots, and it may sit at a depth that does not suit the new floor plan. The old water line can be too small for a larger house or made of a material nobody wants to reconnect. Before anyone decides to reuse either, look at it properly. A sewer camera inspection shows the route and condition of the old lateral and whether it can serve the new house.
Reuse, repair or run new
Three paths come up most often. Reusing a sound lateral at a workable depth saves digging. Repairing one damaged section, or lining it where the pipe suits that method, can make sense when the trouble is limited, and our main sewer line repair crew takes on that kind of work. Running a new building sewer to the tap is the cleanest answer when the old pipe is deteriorated, too shallow or in the way of the new footprint, and it generally means sewer excavation across the yard. The choice affects the schedule too, because a new tie-in adds its own inspection.
Who inspects what in Atlanta
The Office of Buildings in the Department of City Planning generally wants a permit in place before plumbing is installed, repaired or replaced, and an owner may file for one on their own house. An underground inspection is one of the stops on the city's list of trade inspections.
A new connection to the public sewer brings in a second department. Tie-ins are inspected by the Department of Watershed Management, so a house with a new building sewer answers to two sets of inspectors.
Laying the underground plumbing
Once the service decisions are made, the crew lays the building drain and the branches for every floor-level fixture, sets sleeves where pipe passes through footings or foundation walls, and adds cleanouts where the drain leaves the house and at changes of direction. Every line is pitched toward the exit, joints are made up, and the system is filled for its test. Nothing is backfilled or covered until the underground inspection passes, and bedding then goes in carefully so stones do not rest against the pipe. Rough-in, top-out and final come next, as with any new construction plumbing, but on an infill lot the underground decisions are the hard ones.
Sloped lots and basements
Many infill lots fall away from the street, and a basement floor can end up lower than the public sewer. Fixtures below the sewer cannot drain by gravity, so they need a sewage ejector pit and pump. Decide early whether a basement bath is part of the plan, because the pit and its discharge route are set during the underground stage, not after the floor is poured.
Questions Atlanta infill builders ask
Can the old sewer line be reused for a new house?
Sometimes. It depends on the pipe material, its condition, its depth and whether its route works with the new footprint, and a camera inspection supplies those facts. A lateral in good shape at a practical depth can save time and digging, but a cracked, root-filled or shallow line is usually replaced while the yard is already open for construction.
Does a video inspection replace an inspector on site?
For single-family work, the city's trade inspection guidance lists video inspections as one option, alongside in-person visits and approved third-party inspectors. Which route suits a particular project depends on what the city offers and requires when you schedule. Whichever route applies, the piping stays exposed and holds its test until the inspection is complete.
What does the underground inspection look at?
The inspector typically checks that the pipe material and sizes are appropriate, that lines slope correctly toward the exit, that joints and fittings are sound, and that the system holds its test without leaking. Cleanouts and sleeves are visible at this point as well. While the slab area is still open, any correction is simple; after concrete, it is not.
Talk to Alpha before demolition day
Planning a new Atlanta home where another house once stood? Call us at (404) 409-4448 before demolition, while the old service lines are still easy to trace and evaluate.