Cost-effective building without loss of quality, architect's house

Are BU, architects, and prefabricated house manufacturers trying not to sell something that causes additional costs but has no essential benefit? I would like advice on that.

No.
So maybe prefabricated house builders. But wood is practically out already if part of the ground floor has to be built into a slope.
I also don’t know why everyone here keeps addressing the prefabricated stuff. That has already been discussed, if I remember correctly.
Massive general contractors, meaning stone houses, are happy not to have to install extras because they have to provide a warranty on them. Usually, you have to turn to the subs to have extras installed. Everything else also costs the general contractor or craftsman in procurement.

It simply does not matter exactly where the house is located.

Yes, of course it does. Regional regulations apply in many respects.
If Germany is not the building location, then those three pages with the farming atlas could have been spared here as well…
Besides, you use the material that is offered cheaply in the region if you want to build cheaply.

Dormers are allowed.

They are really expensive.

The development plan in short: * maximum 2 full floors + basement * gable roof, parallel to the slope * dormers are allowed * buildable area is sufficiently available * neighbors are far enough away * access is from below
[...] The property is in Austria, in the Alps.

In post #38, after several advisors have already counted their further assistance. But after all – it is possible. Even if working through the follow-up questions would be better.

What am I supposed to do if I don’t even live in Germany? I HAD to specify some federal state.

I have already read "abroad" or "OE" here several times. With "prefabricatedhouse" one could have guessed Austria; I am rather “trained” on the signal word "Stiege" ;-)

Trying not to sell BU, architects and prefabricated houses something that causes additional costs but has no essential benefit? For that I would like advice.

Then you should have asked that in your opening post. And gotten the answer: coming to the construction company with an architect or other independent building advisor, you get what you want. What they want to sell you, you get if you show up there unprotected.

If I had never mentioned a hillside location – would you also need to know everything for the actual thread topic like how and exactly where it is built with a topographical site plan and where the connections and neighbors are?

Yes, sure. If you hadn’t mentioned the hillside location, you would have been asked about it afterwards. You can read extensively about the causal connection between topography and building structure under the keyword 11ant basement question. A very big cost factor (many times greater than walk-in rainshower, corner windows and the like) against cheap building is not to use a basement required by the property, i.e. not to set it off above. This redundancy costs. Significantly.

I can assure you that even with sky and view, the picture won’t become particularly more helpful.
The fact that no one from the internet will come to visit me once the house is finished is another matter – you are welcome to share your private address.

It is properly stated in the imprint, in case "Rheinkilometer 610" is too imprecise for you (true, I omitted "Deutzer Seite," and of course this river kilometer also exists on the cathedral side). What a meaningful picture needs, you can safely trust those who can read such things. Here you are certainly not asked anything just for the fun of it.

I would not base my house construction primarily on being cheap. I would rather build according to the premise of what luxury must be. For example, it was important to me to have centrally controlled and electric blinds on the ground floor. Underfloor heating on the ground floor and in the bathroom. Lots of window area on the south side, etc. On the steep slope, it is important to build with the slope. Hence my interest in the property with heights and direction of the gradient.

I just thought of something else, UG massive EG and roof wood.

Which direction does the slope go?

I just thought of something else, basement massively, ground floor and roof wood. Which direction does the slope go?

Does that actually make sense? The masons for the basement are already there, the bricks are already being delivered and unloaded, and the concrete/mortar is already coming with the basement. I can also imagine that a uniform construction is easier to plan...

Does that actually make sense? The masons for the basement are already there, the bricks are already being delivered and unloaded anyway, and the concrete/mortar is also arriving with the basement. I can also imagine that a uniform construction is easier to plan...

With a concrete cellar, which is quite sensible on a slope, usually yes.