At the moment there is no way to destroy player structures. Blowing up vehicles doesn't do it, the really big zombies don't do it, and the result is that it is very very easy for a group, once they have claimed primary items such as helos, to keep them, even though said items are RIGHT FREAKING THERE. Is there any plan on making base raiding viable, though difficult? I understand not wanting to come back all the time to a home that's been knocked down, but as it is also it seems to be on the opposite spectrum where things that shouldn't be doable...are.