Calculation interior finishing: heating, sanitary, bathrooms, floor coverings

Regarding the electrical system. In my opinion, the Berker S1 switch series is well suited and really affordable. LAN is rather unnecessary. A decent WLAN with FritzBox is definitely enough to have reception everywhere in a single-family house. Plan for the outdoor cable and the SAT system, unless you also want to watch TV via DSL. That wouldn’t be for me. DSL malfunction, TV dead, not good. Dimmer is a matter of opinion; we don’t need any. Instead, we use light switches to turn on the towel radiator or the exhaust fan in the bathroom manually. If you cleverly install and plan some ceiling spotlights in the house, you save lamps and outdoor lights later. These spotlights are cheap, between 20 and 30 each installed, and they produce nice light with their LEDs. There should be an outdoor socket on the terrace; it’s useful for all kinds of things. All this is not luxury, but necessary. By the way, our electrical installations cost around just under six [gross]. But smaller house! Karsten

So that you can see that it also works the other way around, here are our costs for 140 sqm of living space

This has exactly nothing to do with this thread! This was about upscale standards without personal contribution.

Sorry Karsten, but in my single-family house with 92sqm of living space and reinforced concrete ceilings, the FritzBox simply wasn't enough anymore. I had to amplify the signal with significant losses in speed. That's why there's LAN now. We watch a lot on Netflix and so on. Many of our acquaintances do too. So it's necessary. Otherwise, I've said all I know.

And the internet will also lay it for you?

No, but you yourself or a nice craftsman, no problem.

You simply wrote that it is not possible, only the material.

Certainly! And who installs it? Right - so there's an additional cost.

Funny that some here still write about what they did themselves to make it cheaper. The thread starter is concerned with interior finishing without self-work!!

And finished installed floors under 50€/sqm are simply not possible..

And that’s without tiles, only wood!

I think, adding tile installation, you’ll have to calculate on average about 100€/sqm installed for the whole house.

Not every builder has the time/relatives for self-work!

Yes, of course there is an additional cost if you can’t do it yourself.
But it was said that it’s not possible at the material price.

No, but doing it yourself or having a nice craftsman do it, no problem.

You simply said that it is not possible, only from the material

It was said that without personal effort it is not possible in upscale standard. Nothing more!