I wouldn’t post a picture of my children on the internet... If it bothers you, which I can understand, talk to the neighbor, demand the restoration of your property, and implement another solution
We also set L stones to the neighbor, but in such a way that the concrete is on our property. I would not accept it like that. The neighbors have to support it and then please on their property. That looks really bad.
As my predecessor already writes, I would demand that if he has to intercept, he should damn well do it on his own property. Back support is fine and all, but he has to place it so that it ends at the boundary, and his curbs or L stones or whatever, accordingly in front of the boundary on his property.
The height planning in the construction area has apparently been solved brilliantly. All different and the last one has to deal with the sh**. There are L-bricks that are only 6 cm thick. I don’t understand why they use the thick 10 cm ones there. It doesn’t look good visually as a boundary, where later there will probably only be a bed/lawn.
You are right, the height planning here is an absolute disaster! What would my rights be as an affected party? Am I allowed to remove the concrete on my property?
The concrete belongs on his side. It looks obviously stupid when he starts with L-stones, because then the curb would have to be offset and would no longer form a line... let's see how the garden landscaper wants to solve that, in any case he will tear the curbs out again (that would at least be my expectation).
Apart from that, to also reprimand the OP, you don’t plant so close to the boundary when the neighbor hasn’t even prepared the site yet. It’s hardly possible to work without causing damage.