Floor plan of a single-family house, feedback

In actual wall structure, no supply lines simply run. That is why we later created the supply level.

How thick is a non-load-bearing interior wall then?

You lucky one. Industrially, this is not normal, but already premium flexible.

It’s also not standard for them. On the contrary, I’m probably the first (and last) who has it like this.
They have expansion stages, from "Shell is up, do the rest yourself" over "Technology is ready," "Almost everything ready," to "Turnkey." I said from the beginning "I’ll take almost everything ready BUT take the electrical out," and that was promised to me. No one had that before, I’m the first, now they’re doing it with me, but it really doesn’t fit into their scheme, so I’ll probably remain the only one.

It's not standard with them either. On the contrary, [...] it really doesn't fit their scheme, so I'll probably remain the only one.

... and in my estimation it will go down in the history of sales trainings, which seemingly harmless special requests customers must never, never, never be fulfilled (because when leaving the quality assurance path, there are only losers all around). My Steinemantra in general (and the reference to as a concrete self-initiated unlucky knight) is by no means explained by the fact that I wanted to heal the world with my (non-existent) pessimism or liked to be right as a nagging know-it-all teacher. Quality assurance processes create routines, and sorcerer's apprentices put their success at risk. No beauty contest between Alexa, Siri, and Cortana is worth creating a home automation perfection McMansion Hell for yourself. Electrical work is structurally such a supporting part and within a ready-to-move-in house such a minefield of warranty own goals that the head of the legal department could retire because it was not forbidden to sales. Theoretically, but unfortunately only there, an industrial carpenter builds according to the same principle as a unique-manufacture carpentry business. That doesn’t regret it, in my opinion, is not encouragement to try it as well. Brooms that are supposed to carry water buckets, well, what could possibly go that wrong?...

Say "April Fool" and put the electrical work back in — even if it probably costs more than never having removed it, but it will be a good investment. While you wanted to educate yourself about photovoltaics, better push the study of the history of the robber.

History of the robber.

Please enlighten us. I have read about the robber several times before, what is it all about?

Say "April Fool's" and take the electrical system back inside - even if it probably costs more than never having removed it, but it will be a good investment. In the time you wanted to get informed about photovoltaics, better focus on studying the history of the robber.

No. Unless I win the lottery, because roughly estimated that would cost me at least three times as much. If not even more.

Apart from that, this is exactly the trade I know the most about and where I can deliver best myself. And for the part I lack here, I'll hire a company. So I'm not on my own.

Enlighten us please. I have read about the robber several times, what is that all about?

Easily found using the forum search. Someone who wanted to build a fairly large house (and then actually did), but apparently (I've only gone through the first 80 pages) carried an invisible sign saying "HERE WITH ME" whenever it came to whether something was not correct or simply possible. Combined with not exactly the brightest building consultants/companions/architects, this resulted in a construction that was probably intended as a model object for training new building experts.