<i>&quot;Underground&quot; isn&#x27;t very feasible in Florida.</i><p>Here in central Texas, we have the same thing, but for the opposite reasons. Our water table is pretty deep - typical wells in my town are 900ft deep. But rather than sand, we&#x27;ve got limestone. Typical land has <i>inches</i> of topsoil sitting on top of solid limestone, so excavating a basement is prohibitively expensive.