[rattlsnak]

intersting read. around here, fences cant be built on property lines. they have to be @6" or so towrds the inside. Neighbors can ask for monies to split the cost for the initial build or repairs afterwards, but the fence clearly 'belongs' to somebody and the other neighbor has no ownership and deosnt have to pay a penny for either if he doesnt want to. In this case the tree issue would be interesting, but it would have to be cut and then made to pay the repairs. But as stated above, probably be easier just to fix it yourself and move on..