Hi all, we are in the process of building our house in NSW. There is a retaining wall between us and our neighbour which was build at least 40 years ago (without footings or core filling) to support their driveway. The retaining wall is collapsing and the fence is rotten. The damage was done well before we started building but they are claiming that our building has done the damage. I believe that they should be responsible for repairing the wall (and I will pay for half the fence) since they have altered the lay of the land to build the driveway.
Firstly, I don't believe they could claim that the damage was done by me and I have plenty of photos before, during and after construction to prove it so I'm not worried about that.
Secondly, I cannot find a reference which says that the person who alters the fall of the land is responsible for maintaining the wall (in NSW). I could find a reference for SA but not NSW. Does that law apply in NSW?
Could someone please point me in the direction of a reference or should I get a property lawyer involved?
Thanks.

Firstly, I don't believe they could claim that the damage was done by me and I have plenty of photos before, during and after construction to prove it so I'm not worried about that.
Secondly, I cannot find a reference which says that the person who alters the fall of the land is responsible for maintaining the wall (in NSW). I could find a reference for SA but not NSW. Does that law apply in NSW?
Could someone please point me in the direction of a reference or should I get a property lawyer involved?
Thanks.
