From your narrative I have no idea why the lawyer would have done this. We don't normally get involved in council tax matters unless there are arrears and the council has taken an inhibition on the house which has to be removed before a sale can go through. I suggest that if you have no other information that would help me to answer you that you ask the lawyer for a cash statement in connection with the sale transaction. Once you see that you can ask any questions of the lawyer that remain unclear. Happy to discuss further.