Like most other things here, not a lot. The only time I have seen negotiations in a real estate office was a couple of months ago when I went with a friend who was trying to buy an apartment. No-one even seemed to understand how a mortgage worked. A couple of the staff spoke reasonable English and I ended up sitting down with them and explaining that my friend did not need to pay a much higher deposit than was agreed to the seller. The deposit was paid to the mortgage company and that the lender would pay the seller in full. It seemed to take forever to impart such wisdom  and even then I am not sure they got it.