We're selling our house and the buyers' solicitors keep asking questions about the dropped kerb for our driveway, when it was done, do we have permissions for it etc. It was here when we moved in 5.5 years ago and I can't remember ever being told when it was done. I suspect a very long time ago. Why do they keep going on about it?! I'm really worried it's going to put a spanner in the works.