You don’t need a fence up to get Occupancy Certificate.
Good luck getting any money back via arbitration or legally....best to get consent or hope the neighbour will do the right…

If you are concerned about the money then you should either wait to get in touch with them or proceed and hope they will do the right thing. They are…

Not a good choice of name at all.
If you were to complain to Council about it I wonder if they would consider changing.....and change it to something better rather than…