Your home owners and or city may require a fence if you have a pool put in.Yeah we'll need to figure out a way to make the pool safe, both for kids and to keep the neighborhood deer from stepping in to it and ripping up the cover lol. Those are future problems, not today problems. I'm sure at least some of the pool area itself will need a metal fence, but I won't do the whole back yard. No need
Lake Zurich made my nephew install a fence around the pool with a locking staircase/gate, the ones that connects to the pool. Plus they require a fence around the back yard which he already had. His home owners also required the yard to be fenced with a gate