Direct answer
An inground pool is built in a locked sequence: layout and excavation, steel and plumbing, the shell, electrical and equipment pad work, deck and coping, interior finish, and start-up. Later stages cannot repair a missed sleeve, drain, or equipment-pad decision without opening finished work.
Key takeaways
- Freeze shell method, waterline, equipment location, and cover track type before excavation.
- Plumbing, bonding, and any cover vault or drain must be in the ground before the shell is shot or poured.
- Coping, deck drainage, and equipment-pad layout are coordination items, not finish-only details.
- Local permits and inspections control the schedule more than a generic stage list.
A pool project is easier to manage when the construction sequence is visible before the first machine arrives. The stages below are typical for a residential inground concrete pool. Fiberglass and vinyl-liner projects skip or compress some shell steps, but they still need the same early decisions about layout, plumbing, equipment, and any cover.
Key decisions before the hole is opened
Lock the waterline, setbacks, access path, shell method, and equipment location first. If an automatic cover is part of the project, also lock track type, vault or bench location, drainage, and whether the drive is hydraulic or electric. Those items occupy space in the structure. They are not finish options.
Local permits and inspections sit on top of this list. A published stage list does not replace the inspection sequence used by the authority having jurisdiction.
Typical construction stages
- Layout and excavation. The outline, depths, and bench or spa locations are marked. Access for trucks and concrete pumps is confirmed. Spoils and neighboring structures are protected.
- Steel, plumbing, and bonding. Reinforcing steel, circulation piping, skimmers or gutter fittings, returns, and the equipotential bonding grid go in while the hole is still open. Cover vault drains and conduits belong here if they are specified.
- Shell. Gunite or shotcrete is applied over the steel, or a poured wall is placed, or a fiberglass vessel is set. After this stage, moving a pipe or a vault is demolition.
- Electrical and equipment pad. The pad or equipment room is built to the planned elevation and drainage. Pump, filter, heater or heat pump, controls, and any cover power or hydraulic pack need a clear service path.
- Coping, deck, and drainage. The edge and walking surfaces have to shed water away from the shell and away from any cover track or vault. Deck slope is a construction item, not a later finish detail.
- Interior finish and start-up. Plaster, pebble, or another finish is applied, the pool is filled, and circulation is started under the finish manufacturer’s instructions.
Coordination points that get missed
Equipment-pad elevation often ends up lower than the waterline without enough drainage. Cover tracks get detailed after coping is chosen, then the coping profile no longer matches the track. A retrofit-style power location is left on the far side of the house after the conduit path is already closed.
Write these items onto the construction drawings, not into a later change-order conversation.
Related reading: the project checklist, the equipment BOM, and cover coordination.
What this sequence does not decide
The list does not pick a contractor, a price, or a climate-specific finish. Those depend on the site, the local code, and the people doing the work. Use the sequence to ask better questions at each inspection hold, and to keep equipment and cover decisions on the same schedule as the shell.
Frequently asked questions
How long does pool construction usually take?
A typical residential gunite or shotcrete project often spans several months once permits are issued, but weather, inspection holds, and finish curing can extend that. Fiberglass and some vinyl projects can be faster after the hole is ready. Treat any calendar as a planning range, not a contract.
What has to be decided before excavation starts?
Confirm the pool shape and waterline, setbacks, access for equipment, the shell method, the equipment-pad or room location, and whether an automatic cover needs a vault, track, or power reservation. Changing those after the hole is open usually means rework.
When should an automatic cover be coordinated?
During design and before the shell is placed. Track type, vault size, drainage, and power or hydraulic lines are embedded in the structure. Retrofit is possible on some pools, but it is a different project than a new-construction cover.
Sources
- Model Aquatic Health Code — U.S. Centers for Disease Control and Prevention Accessed August 27, 2026.
- Standards and codes — Pool & Hot Tub Alliance Accessed August 27, 2026.