Sometimes, sometimes not. And it does not matter when the water table is 25 or 30 feet below ground level..
As we know, the water table is super high in central Florida, so while basements can be built, its very costly.
I did ACTUALLY see one, in Saint Cloud, FL (right next to WDW). It was in a old change place, I saw the stairs, I really wanted to go down there, they would not let me go down there.
Anyway, I suspect someone building a home on their own land in central Florida, could build a basement but again it would be costly.
The central Florida subdivision homes on 50 wide plots that are cranked out are not made with basements because those homes would cost way too much to build.