Financing a self-build house - How to deal with banks and craftsmen?

Hello everyone!
I have a probably silly question... we are interested in a building plot in our city and would like to build a shell house on it to save costs and because my husband is a craftsman. Unfortunately, our own capital is only sufficient for the incidental building costs, and it would be a 100% financing. The house has a fixed purchase price. We would therefore still need the money for the expansion. How is it determined how much money you get (depending on what the bank is willing to provide, of course)? We do not want luxury fittings, but it should be of higher quality and also appeal to us.
Best regards and many thanks in advance

SchwesterEla

How exactly do you mean

How is it determined how much money you get?

? Ultimately, you go to the bank with a cost estimate (similar to the architect's house) and want a certain amount of money. You then receive financing for that. The money is usually paid out for invoices. Rarely do you get the sum x in your account with the note: make something nice out of it. In other words, it is usually a story of: advance payment / trade billing / reimbursement of costs (before payment due date).

Basically, that is already a helpful answer, thank you. But since my husband and family/friends cover almost all trades, there would only be issues with the invoices for the building materials. And basically the question is: who estimates that? Ourselves or the bank? Those would be things for which you don’t need an architect. That means floor, walls, bathrooms... Do you understand me? ;)

You estimate that! The bank only says yes or no.

Very simple, make a detailed Excel list where you write down what you think you need. Then go to the bank (offer for the house of course as well) and then the conversation can start.

Hello, Unfortunately, a bank will not be able to tell you what the material costs. You have to do that yourself or get help for it (craftsmen, building material dealers, or maybe an architect). But you also have to keep in mind that there will be additional costs coming your way: catering for the craftsmen (that already adds up), insurance for the craftsmen, a buffer for unplanned costs, costs for the [Grundschuldeintragung], etc.