Pool companies quote the whole project; the dig inside that quote is our world. If you're comparing pool bids or contracting the excavation separately, here's what the digging itself costs around Guelph in 2026 and what makes it swing.
Access. The classic Guelph problem: a south-end backyard behind a fence with 42 inches of gate. A full-size excavator digs a pool in a day; a mini-ex through a narrow gap takes two or three. Removing a fence section (and sometimes renting ground protection for the lawn) is routinely worth it.
Soil and water. Most of Guelph digs well, but pockets of heavy clay hold water in the hole, and a high water table means pumping. Rock is rare here but not unheard of near the Eramosa edges — it's priced as an extra if hit.
Spoil: keep or haul? If your lot can absorb the material (berms, low spots, rough grading), you save most of the trucking line. If it all has to leave, trucking can rival the dig itself.
Over-dig discipline. Fibreglass shells need a hole close to the shell's shape — every extra foot of over-dig is material you pay to remove and then pay to backfill with stone. Ask whoever digs yours how they control tolerance; it's a fair test of whether they've done shells before.
With decent access, one day of digging plus a day of haul-away and base prep is normal. Tight-access backyard digs with a mini-ex run 2-3 days.
Always — Ontario One Call locates are mandatory and free, and take up to 5 business days. Private lines (irrigation, landscape lighting, gas to a fire pit) need a private locate on top.
If your lot has somewhere useful to put it, yes — spreading spoil on site can cut $1,000-$3,000 of trucking from the job. It has to be planned before dig day, not decided when the pile appears.
The hole is smaller. Concrete pools need generous over-dig for forming and plumbing crews to work, which means more material out and more stone back in.