Is it sensible to build a new semi-detached house without the KfW standard?

Have you all lost your minds?
Because of a few kWh/m2*a on paper, a otherwise seemingly suitable house shouldn't be bought?
That simply doesn't matter.
The insulation craze has really taken hold in people's heads.
And the battens in the attic are also crucial? You can fix that in a weekend.
If location and layout fit as you say, go for it...

I completely agree - including the choice of words!

Guys, no one said that the house is bad... I just think the price/performance ratio doesn't match. If there were floors,... in it, I would say okay, but as it is, it's a bit weak.

Why not just buy an apartment then and see how it goes? At least you’re not throwing rent out the window.

Well, with the current rent one can save a good amount. There’s also no child on the way, so it’s not urgent. In the area where I would want to buy a house, there are practically no apartment buildings. And in the next city, apartments are going for around €4200/m². That’s not something you just buy as a temporary solution. The decision hasn’t become easier because of this thread, but thanks anyway for your answers. In the end, buying a house always seems to require guts, and there’s always that uneasy feeling of buying at a time when everything (except the loan) is too expensive.

Hello again,
there is an appointment on site tomorrow and when I reviewed the documents again, I noticed that I obviously didn’t read correctly.

It is not 17.5cm Poroton with [WDVS] but 17.5cm Poroton with 16cm thermal insulation plaster. That somehow seems even stranger to me. As far as I have been able to find out, thermal insulation plaster is mainly used for the renovation of old buildings and only up to a thickness of 10cm there.

I will definitely address that tomorrow. Have you ever heard of such a combination?

Hello again,
there is an appointment on site tomorrow and when reviewing the documents again, I realized that I obviously did not read correctly.

It is not 17.5cm Poroton with ETICS but 17.5cm Poroton with 16cm thermal insulation plaster. That somehow seems even more strange to me. As far as I have been able to find out so far, thermal insulation plaster is mainly used for old building renovations and there only up to a thickness of 10cm.

I will definitely address this tomorrow. Have you ever heard of such a combination?

sounds like: he has no idea what he is talking about. but since your tomorrow is our yesterday. what is really installed?

In fact, 16cm ETICS is installed. The information was simply incorrect. The partition wall between the two halves of the house has 17.5cm Poroton on each side and 6cm insulation material in between. We will first try to get an appointment with an independent expert who should take a look at everything.