Selling new construction after receiving funding / Wohnriester - possible?

I had a similar problem with our direct neighbors. I had lived in the house for 10 years before and never had any problems, even though it is very thin-walled. New neighbors who are loud every (!) night until 2-3 a.m. I have to get up at 6. So after a few weeks I was running on empty or slept in the living room.

Step 1: Approached very friendly ("you are new and maybe don’t know yet that the house is so thin-walled, etc."). Once, twice, three times. It didn’t help. Zero understanding or consideration. Step 2: Earplugs, noise cancelling. It didn’t help. The noise came through. Step 3: Contacted the landlord, unfortunately that is not an option with you. It was good for 2-3 weeks, then it started again. Step 4: Took countermeasures: I started to simply pay no attention in the mornings at 6, which was really hard for me. In addition, every time they were still loud after half past ten at night, I rang the bell and asked for quiet. And then again after an hour. And again and again. It was hell for me; who likes to do that. What can I say, unfortunately they only understood it when it annoyed them as much as it annoyed me. Since then it has been quiet continuously. And after a few weeks we even greeted each other nicely again in the stairwell.

It is certainly not a perfect solution. Sometimes the other person simply doesn’t understand why or what exactly bothers you and how much.

There is a video on YouTube by Rigotti about gabions overgrown with soil. After 2 years, everything had apparently settled and had to be refilled.

Give me a post number - I was only called into the thread today and haven't read all two dozen pages.

Was in another thread, I also have to look for it first. ... Maybe I overinterpreted this post, but I'll take a closer look: https://www.hausbau-forum.de/threads/holz-sichtschutz-zaun-planung-uebertrieben-alternativen.39366/post-500805

Here in another thread I found it:
https://www.hausbau-forum.de/threads/bunter-garten-plauder-bilder-thread.30829/post-512171

Tried to start a very friendly conversation ("you are new and maybe don't know yet that the house is so thin-walled and so on"). Once, twice, three times. It didn't help. Zero understanding or consideration.

Unfortunately, it only works on the side sometimes.

I had a neighbor like this in my old apartment too: student, stoner, and music at full volume at night. I confronted him. Literally :) because he didn't get it in a nice way. As a final word, I gave him a hint that if he calls the police, I would make sure he gets busted with his drugs. He avoided me and kept quiet. An older neighbor thanked me.

@katti1337

If everything else about the house is fine, I would mercilessly build a soundproof wall there no matter the cost, of course green it and make sure there's lots of evergreens in the garden because that should reduce a lot of noise. And especially make sure the neighbor does the same.
In new housing developments, the bare walls and the lack of trees are unfortunately part of the reason why noise is perceived more intensely.

As says. And therefore ask to remove the bass.