Neighbour has a large cedar tree (30ft + high) in his front garden. It's around a metre from the boundary to the shared drive and has caused some damage to this (not enough at present to cause a fuss). Problem is neighbour now wants to install railings on his boundary and is talking about cutting out some of the roots to level things for the installation of the railings and gates. I'm concerned that neighbour will attempt to do this work himself (he's not at all approachable) and that given it's so close to the trunk it's liable to destabalise the tree. Am I right to be concerned or if he's only leveling the ground is he unlikely to weaken the tree?