Additional positions in house construction: are they useful and reasonably priced?

And you believe that heating more for 40 years is ultimately cheaper than a central ventilation system with heat recovery?

yes, the central ventilation system is supposed to cost €17,300. that's simply too expensive for us... we'd rather ventilate more often

the thing with the drywall installer is a good thing, can anyone else confirm the price.
for us, a recessed mirror cabinet instead of the shelf might also be an option. Does that cost about the same?

Yes.. I assume that the 68mm boxes are meant. Should I maybe take it out again.

It should be about 64m2 of rough-sawn boards.

Then ventilate often enough and properly. You will get a hermetically sealed house – and you will notice it immediately when you wake up in your own stale air in the bedroom in the morning ;) .

But I can immediately understand the argument "price" in the current times. Then definitely book the 14. You are not buying ventilation, but living comfort (I know both – central from the last new build and now decentralized in the old building – never again without).

For Rauhspung that would be a great price. Back then, I was charged 790 EUR for 20m² OSB panels... so I am rather skeptical regarding the 64m². That seems very cheap to me...

Regarding the boxes. You have to talk to them. If in the end they install normal boxes for you, you haven't gained anything. But the extra charge is quite steep, considering that a 20-pack of deep boxes costs around 3 EUR at the hardware store. And whether the electrician drills 46mm or 68mm deep...

PS:
And woe betide you if you end up with mold because you didn't ventilate like champions. Then the 17,000 EUR are just the first installment for the renovation.

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Decentralized ventilation no no no! (Does not exist in whisper quiet and will always! Annoy.
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