Jervisbay
In my case builders around were dumping dirt and building materials on our block. Since we didn't who did that we could not speak with neighbors builders. It could have been builders several blocks away.
We received a lovely letter from our soon to be neighbour's solicitor. Essentially they were accusing us of dumping site waste onto their block, and requested that we pay for it to be removed.
Fortunately we were quite friendly with the neighbours on the other side of this block and behind this block - guess what they all received the letter also...
I can almost guarantee that the waste wasn't as a result of any of our three builds. I checked the timber to see if it had any builders marks in case -seems to me it was dumped there by some random.
Anyhow, I got our solicitor (my uncle in-law) to respond that it was not our waste and for them to prove otherwise... Our neighbours as far as I understand didin't even bother responding..
In my opinion it was an attempt to weasel some $$$$ out of all of us. Great start to the neighbourhood huh?