Thank you very much for your feedback.
@
It is clear that the €10,000 will of course be recouped elsewhere. That is why I also stated the regular price of €17,950 there.
Since this price is openly available on the internet, it can be used for a good comparison.
No, the basement is not included in the 140m². However, I stated it separately in another post. The total is about 180m² - 190m².
Addendum:
I just checked again:
In the position "basement expansion," there is even almost €4,500 for underfloor heating listed separately.
That would put me at almost €33,000 for heating.
Unbelievable.