I asked for experience reports :)
No, you didn’t!
By the way, this is what I imagine experience reports to be and not just a: no, that’s not possible
But that wasn’t even your question! Your question was simply:
Now to the question, is it realistic that we could build this house for 350,000€?
The title for this topic: “Hanghaus für 350000€ umsetzbar?” And since it simply doesn’t work, there are no experience reports. Certainly, you can build expensive or cheap. There is also moderate building. But a hillside house does not fall into that category because of the enormous earthworks. That is the sheer contradiction. (Comparable to “Can blue also be red?”) For a standard house, rectangular floor plan without frills on a slab foundation, reasonable equipment, few exterior walls, without thermal gimmicks, with a basement or garage in the house, you pay about 3000€/sqm (without own work). To perform one hour of skilled labor, a layperson must plan three hours. Material on top and a lot of learning costs. And as already said: having others do the work only works to a limited extent. If you also read carefully here how most respond to you, you can recall corresponding posts. Ancillary building costs are calculated at 50,000 for flat building land. For a hillside about 80-100,000, there would quite roughly also be necessary retaining of the terrain. Perhaps also a small sewage treatment plant is already included there. It can be cheaper, but also more expensive. Remaining from 350,000€ calculatively are therefore 250,000€. That theoretically allows about 83sqm to build. Since a small house is first of all more expensive than the calculated standard value of 3000€/sqm, we are possibly at 75-80sqm. Perhaps you can push out 90sqm with own work. But certainly not more, because the bank will not go along with that. They finance for you something that is feasible and valuable, so something that can quickly be turned into money again. Feasibility is also tied to deadlines and professional execution of most trades. Now you already come in the opening thread before your question with expensive ideas:
It would be built two-story, with a basement,
Basement? A basement also costs an additional 1500-2000€/sqm So, answer: no! You don’t have that money. Two-story at 90sqm? (That can be done, here we have a house like that with about 45sqm per floor, it’s a 2-person house)
We thought of a 150sqm house
But you want 150sqm So, answer: no! Not possible
Double garage also with a basement (otherwise not possible), small sewage treatment plant
Double garage as well? So, answer: no! No to the third power
What did it cost?
This question reminds me of “How expensive is a car?” I have been here for over 12 years among other things in this forum, but it simply costs what it costs. All those who have reported here about their hillside house construction exceeded their pain threshold, which was already very cautiously calculated at a high level. Many backed down, not only with their wishes but also the additional floor or even the house construction. A buffer additionally in the amount of half your possibility was not uncommon. And if a draftsman sticks his neck out or a businessman who became self-employed with a construction company says that it would work, then that is grossly negligent what they do and simply naive on your part. By the way, you can search for experience reports here yourself with the search function: simply enter .Kosten.Hang. You should also inform yourself how expensive a house construction essentially is.