A pool hole is a measured dig, not a pit you make up on the day. The builder or the pool company sets the size and the depth. We dig to that, cart the spoil, and leave the hole so the next trade can form it. Sandy ground, rock, and a high water table change the job. We will not guess that from a brochure.
Access is the usual limit. A side path that will not take a 1.7 tonne machine means more hand work or a different plan. Spoil has to come out the same way. Neighbours, pool fences, and existing slabs around the yard get looked at before the first bucket. Some pool holes sit behind a knock-down. The house is gone, then the hole is easier. Some sit in a finished backyard. That is a tighter job.
If the old pool is coming out as well as a new one going in, that is demolition of the shell plus a dig. See house demolition if a dwelling is coming down on the same booking. Spoil leaving the site is disposal either way.
We inspect, then we quote. Photos of the yard, the side access, and the street are the first things we need. Call 0487 549 909 or send the suburb and a couple of photos.