Concrete ceiling or wooden beam ceiling

Hello,

Concrete slab thickness 16 or 18 cm // how expensive is the element slab per m²? (Reinforcement and in-situ concrete not included... only the element slab)

You do not choose the thickness of the concrete slab, it is specified by the structural engineer

Are there usable m² price guidelines that one can orient towards before requesting an offer? (I will do insulation and drywall myself)

Not really, and prices also vary from federal state to federal state. For you, it is additionally complicated by the fact that you want to build next year. Just last year there were two price increases in our industry, and I fear that due to the rapidly rising energy prices this year, it will not get any better.

How does it look with a wooden beam ceiling with blinds? Usable without problems?

Yes.

Have I forgotten any important questions that I should have asked?

You have asked questions and probably had your desired floor plan in mind – but we cannot see it. Therefore, no one can answer your question about support columns, since it is not known how much freely spanning ceiling must be considered.

I would advise you — when the time comes for you — to consult an architect and work out the floor plan with him. Since you want to implement a lot in EL, it would also make sense for that architect to prepare the service specifications. You can then obtain offers for the work you want to award. The architect will calculate the bungalow according to his tables either way, giving you an automatic price benchmark per trade and allowing you to compare the incoming offers optimally.

Best regards