Select and move multiple structures (buildings, individual rooms, tiles, etc) at a time

Currently there is no way to select an entire building or even room with everything in it and be able to move it slightly. We have to either delete everything and redo or make do with how we have it. This is devastating when you realize a map doesn’t quite work or make sense hours into a build but it would if you could move some structures around. Even if you want to select multiple floor tiles or walls, this is not possible. An alternate solution could include a copy and paste feature for said structures that would improve user experience tremendously.