House construction planning: solid house or prefabricated house? With or without a basement?

Sorry, but in my opinion, you have so far not dealt enough with the topic for something reasonable to come out of this. o_O

The fact is, you can definitely build a house with 250m² living/usable space for 600k, but not the house you are imagining! It feels like your extra wishes already cost 400k. But since you apparently are already super well informed anyway and the users of this forum are just talking nonsense, let actions speak. Go to the architect, tell him your ideas, and prove everyone here wrong. ( By the way, with a 600k construction sum, he will probably cost between 70-80k).

But since you apparently are already super informed anyway and the users of this forum are just talking nonsense

Where did I please write that? Actually, the opposite has been the case here until now. Apart from that, I have already thanked the useful contributions :) Don't know where you conjure up your statement from :)

(A company from Berlin)

There is a home cinema company from Berlin that deals exclusively with such things, you can also only buy the devices there, and if you really can't get any further, they will of course help you for a fee :)

I know that you can get help through a company from Berlin and they will let you do it yourself, and whatever you can't manage alone, they will also help you for a fee.

But the boss's name isn't by any chance J. F. or O. J.? The scene is small and people know each other. You find black sheep extremely quickly there and everyone knows that. Anyway. NO Control4 dealer will give you the software (it is licensed to the dealer’s Control4 account) or let you "do it" there. Doing so would be a gross violation of their dealer agreement and they risk not being allowed to work with Control4 anymore. I'd clarify that beforehand. The ETS with 1000 euros can be bought quickly, but the rest gets really difficult. Think very, very carefully about this and clarify it in advance. The hardware can be bought in various places, but without the Composer you can do exactly nothing with it (well, maybe with the zone amplifiers, which are dumb). Yes, Crestron is a completely different league... but that's why I know what sums you are mentally dealing with, and I am extremely sure that you are not aware of it, judging by what you write here. On top of that, you will never retrofit invisible speakers. For that, you have to completely tear open your (drywall) walls, insulate them and—if not already done—make them extremely vibration-proof. Such work is done during construction or never again. Also, you need really good DSP amplifiers to tune those things properly—especially if, like you, you want it completely "clean" and apparently haven’t spent a second thinking about, in this case, very extensive and costly acoustic measures (because you don’t want to see anything). Just saying. Have your home cinema company explain to you how it works. If they even know that, assuming the "he lets you do it" is even true. That would be highly unprofessional.

Well, I never said the speakers should be invisible, only that they should disappear into the wall or ceiling.

I imagine the house construction in such a way that I design the ceilings so that at the spots where something is to be retrofitted, access is still possible. For example, inspection flaps or initially simple covers.

Also, it should not become a real home theater in the sense that, for example, the manufacturer promotes "cinema in the living room." We don't want it that extreme.

It should remain a normal living room. Only the technology should be integrated into the house bus system so that I can bring a movie from the living room into the guest room and also have the audio signal follow me to the bathroom via motion detectors that are already in the house.

So smart, basically.

It's less about a really brutal home theater.

Control 4 was just an example at first. I know what it costs; I didn't really read that you are not supposed to program it yourself. But well, maybe, I haven't been that deep into that area yet.

Ultimately, it should work similarly well in the end, but be realizable more cheaply.

That's where Sonos comes into play again, which I am currently using; here the sound also follows to the bathroom when the TV is on.

It's totally clear that this technology won't be cheap either way, but we have considered that from the beginning, and that's why it should be retrofitted step by step and prepared in advance.

With KNX, it is also clear what costs will come. At the moment, I only have the limited test version to try out and to learn and understand how to handle it.

Currently, I unfortunately still have a wireless smart home, which is supposed to change. And I am also aware that I cannot just move into the house unconsidered.

Therefore, I have been experimenting here for a long time, especially regarding the integration into visualizations.

I know what it costs, I didn't really read that you’re not supposed to program it yourself.

That's how it is. Definitely with Control4 and Crestron.

Well, I didn't say the speakers should be invisible, only that they should disappear in the wall or ceiling.

OK, I overlooked that. Then the insulation of the drywall construction is omitted. You still have to open it up. You will never do that, guaranteed, says experience. A floor-standing speaker or the 35th Sonos One is quicker to buy.

Dive deeply into the serious AV control systems. Professional solutions with the desired scope are not available for the budget. It usually ends up with Sonos and Harmony or something like that. With free visualizations, you can also get that on KNX. I have seen many, many customers or interested parties come and go who had similar ideas, but when faced with the necessary amount, preferred to go to MediaMarkt. Nothing against you, but this topic is not something you just google quickly.

By the way, this is a good example of the numerous contradictions in your posts that make us seriously doubt that you even have a remotely realistic idea of what you intend to do:

Yes, exactly, I am completely into the topic ^^

But okay, maybe I wasn't that deep into that area yet.

It's not a big deal now, but your demeanor already costs you some points in being taken seriously :)

But you combined two quotes from completely different things.

The first quote refers to KNX smart home and the second to TV AV...

So you can't compare them like that.

I’m knowledgeable in the smart home area.
As for audio and video, I’m also familiar with what’s possible, but not specifically with Control 4.

And there are also various other solutions that can be integrated into the smart home from an audio perspective.

Which are also sonically more valuable than Sonos.

For that, you just need a smart zone distributor, or several players that can be easily turned on as needed.
In the end, what you do with it comes out the same.

Ultimately, that wasn’t really my point.
The topic only came up here due to the inquiries.

Mainly it was about prefab houses or traditional masonry and whether or not to have a basement.

Apart from one post that led me to another post where I found something interesting, there was nothing more on the actual question ^^