Newly built condominium advice on construction description etc.

well, whoops, this time correctly :) The network idea is a great one, it was also what we had in mind, at least in the ideal case. We will talk to the architect to see what is possible and how much something like that costs. Maybe something is already planned. In our current apartment, there is a rack in the meter room in the basement with patched LAN cables, but no one knows where they lead :rolleyes: :p I'm not such a fan of PLCs, but only because I deal with them professionally and come from IT security and also often work with Siemens, it can be quite shocking what goes on there ;)

Can I even get a bank guarantee in our setup? Because as I currently think, I only have a contract with the broker, but not with the architect or the tradespeople. We also wondered here whether a building surveyor commissioned by us would have any leverage at all... or whether he will just tell us afterwards "here are the defects, but I can’t do anything for you since you are not a contractual partner of the executing companies"

No, the notarized purchase agreement must ultimately be concluded with the seller, who must also be legally capable of transferring ownership of the item being sold to you. He is then also responsible for defects or their rectification within the warranty period. How he rectifies them, whether by himself or through vicarious agents, does not concern you; you do not really have to worry about which craftsman has time, etc. You may only need to grant access if you have already moved in.

Because as I currently see it, I only have a contract with the broker, but not with the architect or the tradespeople.

If you buy the condominium, you have a contract with the seller = developer. Don't even think for a moment that the broker will take any responsibility after the sale.

We also wondered here whether a building expert commissioned by us would even have any leverage.... or whether he would simply tell us afterwards "here are the defects, but I can't do anything for you since you are not a contractual partner of the executing companies"

The building expert never has any leverage against any party involved. He is simply an expert who points out the defects to you. Just like any other expert gives his statements (car expert as an example). You then have exactly one contact person - your seller = developer. You have to deal with them. But it is no different if you build yourself and then have to deal with the general contractor or the individual trades.

Because as I currently think, I only have a contract with the broker,

Not with the lady? The broker is just an agent…

We also asked ourselves here whether a building surveyor commissioned by us would have any leverage at all....

A building surveyor serves to clarify defects and errors. He has no leverage against a general contractor, subcontractor, or craftsman, since there is no contract between them. He tells you the condition of the trades and you could take action. Problem here: You or you all probably may not enter the construction site until handover. To be allowed to do so, one should always keep the relationship relaxed.

Access to certain construction phase completions can also be contractually agreed upon to secure oneself. However, I did not do this with my condominium. In my apartment, everything was fine except for minor details. The major defects are in our common property. I don't know if it's that easy to secure access there.

If a craftsman goes bankrupt, the developer can still compensate relatively well, and it "actually" does not affect the end customer.

You are welcome to explain this "relatively good compensation" to me in more detail.

In our current apartment, there is a rack with patched LAN cables in the meter room in the basement, but no one knows where they lead to.

The existence of such a facility is unfortunately still not a standard. And you can add the documentation to your list of things to agree on and check.

Can I even get a bank guarantee in our structure? Because as I currently think, I only have a contract with the broker, but not with the architect or the trades. We also asked ourselves here whether a building expert commissioned by us would have any leverage at all....

There is a female builder who commissioned an architect to build a multi-family house with 6 residential units on her property with single contract awarding.

Precisely this female builder is the developer from whom you are legally buying here (and with whom you should agree on a right of access for your construction supervisor). The supervisor has no authority to issue instructions—you cannot transfer any to him because you yourself do not have any. How far the broker is authorized to represent the developer at the notary has no effect on the legal relationship with you—as far as you are concerned, the seller is the developer.