What is the value of a fixed price that is not guaranteed?

Yes, I will do that, but I don’t have an exact price yet. I want to list all services in detail so that other forum members can make use of it.

Is there a subforum here for prices/costs?

Please let us know here if you post it in the subforum.

KB Brandis (Brandenburg). He has been working with the same regional trades for decades.

Does he only build in Brandenburg?

Replace "cheap" with "experienced in promotional price cosmetics" ;-) We do not want to support the myths of purchasing power, unit costs & co :) In which point do you think that stands?

see #43 (e.g. point 4)

But it would be really nice if one could reduce risks. Why does wanting to build have to be so exhausting in the first place?

It doesn't have to be. Allow yourself the phase of thinking and dreaming about how you want to live in your house, extract the essentials. There is no stress in that. Then you look - ideally with a professional - how you can fit something like that within a budget that is below your limit. You only enter negotiations later; there is absolutely no reason to have any stress during the formation of your intentions.

Does he only build in Brandenburg?

see #43 (e.g. point 4)

I think Brandenburg/Berlin. Not beyond that.

Please let us know here if you post it in the subforum.

It is worthwhile for you not only to follow your thread here but also other ongoing ones in parallel. It would be amusing if you expect all the interesting things here to be compiled via links ;) You may also read other threads :p

see #43 (e.g. point 4)

You probably mean post #3, and no: 1. defines the price guarantee period based on the contract conclusion up to the latest date X, 2. limits the price increase in case of delayed start of construction up to the latest date YA to 1%, 3. limits the price increase in case of delayed start of construction up to the latest date YB to 2%, 4. allows the price increase up to the scope of the unmodified contract if the construction start date is also exceeded by the latest date YB. The problem of the phenomenon that the named disturbances can delay not only the construction duration but already the start of construction is not resolved by the aforementioned additional clauses:

Any circumstances of this kind extend the construction time

Construction time is the period between the start of construction and completion – in itself unrelated to the contract conclusion date. Your general contractor guarantees you the price related to the signing date and limits the price increase in two stages of delay (short or long delay), but not in two stages (delay caused by him or delay caused by you – so what happens here with delays "not caused by Corona"?). And from the beginning he can dawdle without penalty, without compensating you for the damage (provision interest, interim accommodation and/or the like).