Love a bit of PWA. My daughter had a right fukcnt of a neighbour. Very nasty piece of work. When the neighbours builder just turned up out of the blue, and started taking the fence down between the properties, (That i had paid for and put up), i had to pop over and have a word. I told him i would give him a hour to put the fence back up, or i would cut his fingers off, and post them through his letterbox, to his wife and kids. I made him empty his wallet. He had about £80. I took that off him, and told him that was my charge for me having to come over. Dont worry, i did it all while remaining super calm. I then made the neighbour appoint a party wall surveyor. I objected to the surveyor, and appointed One of my own. The neighbour had to pay. The surveyor i appointed was an old friend of my dads, so i told him to make sure that he did not agree about anything with the other surveyor. This ment that the neighbour had to pay for a Third surveyor for a final decision. Cost them over Six grand, and Six months by the time it got sorted. Then they had to pay for a more expensive builder, because the One i had chatted to refused to come back. Oh, the fun of being young, and a borderline nutter. Fun times. To me your neighbour sounds like a proper w.........anker. I would be hurting the tossers wallet, and hard.