How will I know if my bunnies have bonded propperly?

At what point will I know what my rabbits have propperly bonded? & when can I move them into peters old enclosure?

I would say they were bonded if there has been no aggression, chasing and fur pulling in the bonding area for some time, difficult to put a time on it but I wouldn't move them into his old home for as long as possible personally, at least a couple of weeks if possible. So long as you can gradually expand the bonding area in their current place, then they will be getting the space they need, and it will help cement the bond. I'm far from an expert though I have only done one bond, that was 2 pairs into a quad, but they moved into a shed that was new to them, so it was completely neutral.