Yes! I pretty much hit every building I came across - just to hopefully break a tower nearby that I couldn't see, and then put utilisation circles around everything, I wasn't sure if I'd get more points if I sent an unbroken building or not.
I had to leave 2 buildings because I couldn't complete the utilisation sigil, some dug out squares wouldn't go back to grass and I waited while everything else cleared apart from those few ,':/ I think I chopped down a tree and that square wouldn't go back to grass? so it was just always in the way.
and it wasn't that the square was on a different level bc I figured that out - when you try dig but just 'whiff' bc you have to go up/down to the right level.