L-shaped floor plan - What is your opinion?

Many have a note that additional costs may arise from changes due to the structural calculations.

This could partly explain the incredible surcharge: if the five thousand only referred to concrete and steel (but would still be cheap for that). How far the building possibly moves into a different fee category for the structural engineer, I do not know.

Is not related to the fee basis of the structural engineer, but is the offered steel beam sufficient for the structural analysis? If not, [Kleingedrucktes Vertrag].

How does the sealing look for the set-back floor? Is it more work

How does the sealing look with the recessed floor? Is it more work

The "Isokorb" jokes are not insignificant cost drivers here, before the energy saving ordinance I would have considered the "you'd do that after work, you don't need an invoice, darling" price more likely - hence my honestly deep astonishment about the mere five thousand.

The "Isokorb" jokes are not insignificant price drivers here

What is that supposed to be?

What is that supposed to be?

"Isokorb" is a product name from the manufacturer Schöck for thermal insulators, which are to be installed in concrete components, for example when essentially one and the same concrete component is partly within the thermal envelope of the building (as here as a floor slab between ground floor and upper floor) and partly forms its outer shell (as here as the ceiling of only the ground floor with the roof area above before the recessed upper floor). Then the component must be divided into two parts, which are thermally independent but, of course, must remain statically connected. So it’s essentially the square of the Columbus egg. Especially at a friendly price, this undertaking is particularly ambitious. We already had this topic a while ago in this thread. Before the Energy Saving Ordinance, these projections (or also cantilevers, e.g. as porch canopies) were simply kept free of ice by thermal bridging.

Just a general question... How did you approach the offer comparisons? I was thinking of making a plain Excel where I list the different categories of the construction service description side by side and do the same for the quantity surveys. Do you have any other brilliant ideas?