My colleagues in Engineering who three years ago were all moved into a ginormous custom-built state of the art building where there is not enough room and they have to share offices...

Is this a sector wide thing with Engineering? The same thing happened at my institution to my Engineering colleagues a couple of years ago.

My building is relatively ramshackle in comparison but at least we have our own generously sized offices.

And congratulations on your stonking great lab space!