Na, have to disagree there -- have a look at the technology that barg mentioned -- - it's not the fact that it can lay bricks -- what it can do is to reach ---------- seriously reach - a long way in a precision way -
meaning that you can have your rig of whatever parked a long way from where you are going to do whatever it is you are going to do - lay bricks, crane stuff in --------------- spit concrete or whatever out of a nozzle and layer it up
have a look at it
I've got some video which I got when I was in another country -- I 'think' it's public - it showed where the robotic arm technology was going - and, it's going a LOT further than laying bricks
spitting out something from a nozzle to build a house on the ground in tight areas in Melbourne would be a doddle in most cases --- if I can find the video - I will post it for you.