It's not too bad though because I still don't know who owns that particular parking spot I wanted to use and whether they would have let me put the box there. Also, I started wondering how I would be able to tap into France Telecom's box which was in the middle of the public street. It may be better for me to simply move one "hop" back onto onto the communal property and put the box there.
Still, it highlights one of the difficulties of planning a network like this. It is difficult to coordinate work.