We have a 1.8m wall all around our property. The next door neighbour has land filled their land using our wall as a soil retainer to a height of 90cm. This is new soil and hasn't had a chance to be weathered in yet. What I'm worried about is the wall will come under great pressure once the rain season comes. I've read various articles saying this and that but nothing legally. So is there a legal right as to whether my neighbours can do what they've done. I have to declare that the husband of the owner neighbour is a German lawyer not that it makes much difference.