Structural shell / Structural shell cost calculation - How does it calculate?

So I also find the layout quite inconsistent. The center of it all seems to be parking spaces for means of transport, from there it only gets stranger. What is the furnished apartment supposed to be? Who is supposed to sleep in the storage room and why are there two beds in the bedroom? The hallway in the main apartment is almost as big as the too small bedroom, but Junior has lots of space. The study is too small, you don't feel comfortable there. Why is there a workstation in the living room again and why is the 'guest WC' so big and taking up the kitchen's needed space?

Have 2 concrete turnkey offers, excluding exterior facilities. Once 800,000 and once 850,000. Both reputable companies from the region. The house is, apart from the recessed attic (requirement of the municipality) not very elaborate.

Yes, and after encouragement plus incidental construction costs, you’re easily at 1 to 1.5 million.

The furnishing is actually a disaster, but that can still be changed. House style like liverwurst sandwich, simply a matter of taste, this bunker style.

- Ground floor: plenty of space Hobby: motorcycle/car - small room as a children's room for toddlers or dressing room - corridor in main apartment not too big. Behind it utility room (please look carefully) - study should not be large - WC in attic a bit bigger to store cleaning supplies. No storage room present there.

So if I apply only the current index for Baden-Württemberg, I come to 624,000 (1300 * 480)

I have 2 concrete turnkey offers, excluding exterior facilities. One for 800,000 and another for 850,000.

Then there must already be a bill of quantities, or how else did the offers come about?

Yes, there was a colorful folder with many details. But how the shell construction costs specifically are composed could not be derived from it...that's why my question, where can I get a typical shell construction bill of quantities [LV]. I would adapt this for my case and obtain initial offers to get a sense of the price...