Building with a small budget feasible?

The problem is also (maybe there is someone here who is an expert and can confirm/refute my theory) that you somehow can't build “too small“. I mean that there are many high fixed costs that increase independently (or not directly proportionally) of the building size. For example, you need an excavator to dig the foundation pit. We are currently asking ourselves something similar, namely to build only what we really need, without having a big pipe dream in mind. It starts with the building size.

Can one assume, for example, that 100 sqm of built-up area costs X euros, and 200 sqm (i.e. double) not 2 times X, but rather 1.8 times X?

Follow-up costs for a larger building are obviously more tiles/floors, windows, etc. - but isn’t it “proportionally“ more expensive to build a small house?

The question will also be for the original poster: Is it worth building KFW 55 or rather just following the Energy Saving Ordinance...

I prefer to stay where German is spoken. Bavaria is like emigrating...

In which area do people really speak German, where is that supposed to be?

It was also about possible savings potential.

If you can save a lot of money somewhere, then it’s on furniture. My entire apartment (except for the bed) is from eBay Classifieds. Van and off you go. People have too much money :).

Exactly. I’m always happy when I truly save money or get a lot more for it. It’s about possible savings potential. We know a kitchen is not included, but it still has to be taken into account.

It's about possible savings potentials. We already know that a kitchen is not included, but it still has to be factored in.

I think they meant floor coverings and painting, which are often not included in turnkey packages.

I just can't imagine how you could build for 250k. I've understood by now that prices in the Munich suburbs are on a completely different level, but still, we pay twice as much. And we order many things online, so not in Munich, and install them ourselves, but still, things cost money.

Before I would buy a plot of land, I would get an offer and see if that's roughly within a possible range.

The problem is also (maybe there is an expert here who can confirm/refute my theory) that you somehow can’t build "too small". I mean that there are a lot of high fixed costs that increase independently (or not directly proportionally) of the building size. For example, you need an excavator to dig out the construction pit. We are currently wondering about something similar, namely really only building what we really need, without having a big pipe dream in mind. It starts with the building size.

So can one assume that, for example, 100 sqm of built-up area costs X euros, and 200 sqm (so double) not 2 times X, but rather 1.8 times X?

Subsequent costs for a larger building are obviously more tiles/floors, windows, etc. - but isn’t it “proportionally” more expensive to build a small house?

I am not an expert, but I would say this only works with individual contracts (general contractors often calculate flat rates per sqm) and even then there are step-active costs. Beyond a certain size you suddenly need intermediate distribution or much more complex structural engineering (more steel), or then you just add another bathroom and such things.

In which area do people really speak German, where is that supposed to be?

It is said that Standard German is spoken in the area in and around Hannover. I have never checked.

I'm not an expert, but I would say that at most this is possible with individual awarding (general contractors often calculate flat rates per sqm) and even then there are step-active costs. Beyond a certain size, you suddenly need intermediate distribution or much more complex statics (more steel) or then you just add another bathroom and such things.

It is said that Standard German is spoken in the area in and around Hanover. I have never checked.

Yes, around Hanover that's correct :)