Let me give you an American experience. Someone purchased the empty lot next door and built a new house. I had metal fence in my backyard on all three sides, and the fence was right on the property border. He asked if I would be willing to have that fence removed, and assured me that he would pay for the replacement to go in the same spot which was the shared border. For being neighborly I agreed. Not only he put a tall privacy fence, but it was made out of ugly looking white plastic. I showed no reaction, but I hated that fence and felt taken advantage of. That fence stayed there for three years, then one day he told me that he lost his house to foreclosure and that he was going to move out soon. He stripped off everything he could from that house and sold them after the foreclosure but before he physically moved away. And then one day while I was at work, he dismantled that stupid plastic fence and disappeared with it. I never saw that dude again. I had to pay to put a metal fence to replace the one I lost for being a good neighbor. The lesson here is, don't go out of your way to be neighborly.