If you want a pool, think about it early because it affects the entire site plan.
Why do you want it?
Swimming laps, children, parties, relaxing, or simply a beautiful visual feature?
Different purposes produce different pools.
Sun orientation matters. A pool shaded all day behaves differently from one in full sun.
The view from inside matters too. A pool visible from the kitchen, family room, and primary bedroom becomes part of the architecture even when nobody is swimming.
Equipment location matters. Pumps and heaters make noise and need power, plumbing, drainage, and service access.
Do not put them against the primary bedroom simply because that corner was left over.
Think about the pool bathroom and outdoor shower. Wet people should not have to cross half the house.
Also consider safety, child access, fencing, deck drainage, shade, and storage for pool equipment and toys.
The pool is not a separate project after the house.
It is part of the house-site composition.