What do you mean by scapegoat, somehow here one is in the role of the clarifier
A flat roof costs, a double garage costs, a single-family house costs.
Luxury costs! And the normal standard costs. Why are there sometimes no double garages in front of the houses? Why is it "only" the Flair 113 house with such square meters?
If you already have the feeling that it is tight... 30,000 equity capital is not much after all... and if you read up a bit, you can quickly recognize your own limits. And that is not bad at all. Then you just save a few more years, look for a used property, or set the standard a bit lower.
However:
Should there be no feasible solution here, there is always the option of going to the prefab house providers, right?
The cheap providers, in this segment you - I believe anyway - don't really want.
Every regular user of this forum knows what the OP means by that, namely a cheap build. The clueless think that "these prefab houses" (whatever that is supposed to mean) are cheap(er). In a pinch, it will just be such a "prefab/cheap house".
Is that the alternative? I think that you can also be happy with a used property or a townhouse if the apartment threatens to burst or the rent becomes more expensive than a house payment.