Fence disputes are crap and being an IP we can't be watching them all the time. Got an email by agent saying that tenant has informed them fence work was being done (It was not agreed upon). They put a retaining wall on our side of the property and remove the old post (a fair neighbour would leave a bit of the old post in the ground as a marker for fence line) By the time attended the property but work is finished. The worst part is the palings have been moved by 10-15cm at different parts of pailing line (previous survey) We have lost up to 2 m of land, Where to from now? Anyone had something similar happen? How much is it going to cost us to take action?