Hi Longlines, The Strata Schemes Management Act 2015 sect 100. makes it clear that the owners corporation must maintain common property and if they don’t and damage is caused to a lots property then the owner can seek damages. But you have only two years to do that. Basically they failed to maintain common property (it leaked, so that shows it was not maintained) so they are responsible for the damage caused. so if you are within 2 years get them to cover the costs or go to NCAT for a ruling.