House construction in Potsdam, which company?

Good evening, we want to build in Potsdam. Our planning documents (floor plan, site plan..) have already been created by our architect. Two companies have already been contacted regarding construction. We can still consider the executing company. It should be a general contractor. Can someone give me tips? With whom have you built (in Potsdam/Brandenburg) and had good/bad experiences?

Thank you very much for your answers

Our planning documents (floor plan, site plan..) have already been created by our architect.

After your rather failed attempt here, I would be interested to know how the plans have developed – show me!

It is supposed to be a general contractor (GC). Can someone give me tips?

If an architect was already involved, my tip would be to have them also handle the tender – that is definitely worthwhile even if you want to build with a GC.

I have posted the floor plans in the other thread. The architect contacted two "core" companies, further tendering is not planned by the architect since the companies are apparently so busy that no additional offers are expected!? I would still like to get 1-2 more offers myself..

I posted the floor plans in the other thread.

Thank you for satisfying my curiosity and the courage to post these drawings here. But please, don’t seriously consider actually building something like this. You wouldn’t wish that on your worst enemy.

The architect contacted two "regular" companies,

Am I correct in assuming that the "architect" is a retiree from the building authority, or a first-semester architecture student? – an independent architect with professional experience never plans like this. Be glad if no one offers to build this for you – and feel invited to develop something better with the forum.