What actually happens between the first site visit and your first swim.

For most new pools in Ottawa, the clock starts in February or March, when a site visit turns into a signed contract. The clock ends somewhere between late June and early August, when your builder hands over keys to the system and you run the first full cycle. In between are six phases, and the timeline is usually about ten to fourteen weeks of calendar time — not ten to fourteen weeks of construction, because weather, permits, and trades sequencing always eat days.

Weeks 1–3Design, permit, and the locate

The design is usually finalized within the first two weeks: shell selection, pool location staked on the property, decking layout, equipment placement, and the enclosure plan. Your builder submits the pool permit to the City of Ottawa and, in parallel, orders a public utility locate — you cannot excavate until the locate is complete and the marks are fresh. The locate is the first place projects slip, so push for the locate request early.

Weeks 4–5Excavation and shell or wall installation

The dig is the loudest day of the project. An excavator removes the pool hole, hauls the spoil, and levels a gravel bed. For fiberglass, the shell arrives on a flatbed and a crane lowers it into place, usually within hours of the dig. For vinyl liner, the wall panels are set, braced, and the floor is prepared. Either way, plumbing is roughed in and the first round of backfill goes down around the shell or walls.

The dig takes a day. The reasons it cannot start take three weeks.

Weeks 6–8Plumbing, electrical, equipment pad

This is the quiet phase. Trenches for return lines, skimmers, main drains, and the dedicated pool-equipment electrical panel are excavated, inspected, and buried. The equipment pad — pump, filter, heater, automation — goes in, usually discreetly tucked against the house foundation or inside a shed. Inspections from the City happen on specific days and sometimes need rescheduling; a good project manager books them in advance.

Weeks 9–11Coping, deck, and liner (if applicable)

The coping — the finished edge that caps the top of the pool wall — goes on, followed by the deck: concrete, pavers, stamped concrete, or travertine, per your selection. For vinyl liner pools, the liner itself is fitted during this phase. For fiberglass, the shell is ready to fill once the coping is set. Landscaping trades typically come in parallel with the deck work.

Weeks 12–14Fill, commission, start-up

Filling a 20,000-gallon pool takes two to four days on a typical Ottawa municipal water supply. Your builder commissions the system, balances the chemistry, runs the pump and heater through their startup cycles, and walks you through operation. The final inspection closes the permit. The enclosure — fence and gate, per the bylaw — must be in place before the pool is usable.

What to watch during install

Three things cause most post-install headaches. First: backfill material. Ask what goes back around the shell or walls, and verify it. Native clay is not acceptable backfill in most specifications. Second: the equipment pad slope. Water must drain away from the pad, not toward your foundation. Third: the electrical bonding of the pool structure — critically important for safety, and not always properly documented on the as-built.