Terrace wall to the neighbor - What should we consider?

Beech hedge. It contributes to a pleasant microclimate in summer and is also sufficiently dense in winter. I am well acquainted with tall fences in terraced house gardens from England. There are many ways to make it nice.

So on the street side the situation is that there is a strip full of trees, which even reach in here with their branches, a strip of meadow behind that, and then the street. I don't think I have to keep a distance there. On the border to the street the neighbors have already built a 1m high wall to hold back the slope. I also like planting along the borders, but it's a lot of work. I want to build a large terrace with a fence around it and the rest lawn, I still need to plant 2 trees and a bed for vegetables.

For now, I will wait and see how things develop here, but after many bad experiences with Mr. Müller, I don’t want to share a fence with him. Later there will only be problems if something happens to the fence. Better mine, I can repair, move, or dismantle it whenever I want. The good Mr. Müller also moves out of his homes every 5 years; there was some rumor that there were problems with the neighbors there as well, but I don’t know exactly why. Here he has already announced that he will stay only 10 years and then sell the house. Who knows who will come after that, I want to avoid having to coordinate or share anything if possible. That means:

If he insists on fencing, it must be on the boundary and I have to pay half. How high will it be then, when here everything usual is allowed? 120 or 180?

I would like to erect a 180cm fence on my property, I have to ask exactly about the distance to the boundary fence. His house is 7.30m wide. These are very large terraced houses, no one has to feel cramped. I am currently rereading all your proposals, have to google which plants you mean, I am not familiar with that either.

Hornbeam hedge. It contributes to a pleasant microclimate in summer and is also dense enough in winter.
I know tall enclosures in terraced house gardens well from England. There are many ways to make it nice.

Yes, but it grows too slowly for the OP. I also find it much nicer.

If he insists on an enclosure, it must be on the boundary and I have to pay half. How high will it be then,

120. As written. You don’t have to keep asking. It doesn’t change from post to post.

Yes, but it grows too slowly for the OP. I also find it much nicer.

120. As written. You don't have to keep asking. That doesn't change from post to post.

Alright, thanks. I can't say much about the plantings yet, I'm just guessing based on how it looks. I'll also take a look around the town to see what people have. There are many terraced houses here, but you only really pay attention to a lot of things when you're at that stage yourself and building something.

I just thought of something: Is the neighbor on the left also obliged to fence? Since he doesn't live there but is the owner of the property? On the left is the empty lot. So he would have to pay a certain amount for at least a simple fence, right? I'm considering asking him, but I'm not sure if it would be the right thing to do. He is a very nice man; he won't have any problems with the choice and amount, but I don't know if he will contribute financially. Then my garden is higher than the neighboring property; I want to fill in a strip. I'd rather ask about it and do it than have problems later on. Problems in the sense of: I filled it up, they let it be lower, and then I have to support something or other. Although they also need to fill in to have houses at street level.

I just thought of something: Is the neighbor on the left also obliged to fence in? Since he does not live there but is the owner of the property? The empty plot is on the left.

Yes, of course you are all equally obliged (if someone wishes). But it was already mentioned why you haven’t spoken with everyone long ago...