Documents are missing for the first partial payment

The developer, however, does not decide what the bank wants to see. What it wants is stated in the contract. And hopefully, you already have a floor plan without measurements in the documents, don't you?! Every bank would want that anyway, including the living area calculation.

You have a funny developer. The necessity of documents is defined by the bank and no one else. If the disbursement conditions are not met, there is no money for you and your developer. You formulated exactly that more nicely when you signed the loan agreement. The bank will not budge an inch from that. That is why it is called a disbursement precondition. Clarify that with your developer!

I have a floor plan without measurements in the documents. However, this is not sufficient for the bank. Funny fits quite well. I have the impression that he thinks he can do whatever he wants.

I have the impression that he thinks he can do whatever he wants.

He can, but then there simply won't be any money. That should be clear to him. Just don't settle anything with equity! You'll get rid of that sooner than you'd like anyway.

I have a floor plan without measurements in the documents. However, this is not sufficient for the bank.

Funny fits quite well. I have the impression that he thinks he can do whatever he wants.

You will have the measurements?! How did the bank check then. They must know how big an object will be. There is a difference whether it's an SUV or a Smart.

Simply dimension it yourself? Is there a building application in which the dimensions are?