clearly YES!
Apply for a small loan. You can also do it online at other banks. It will cost you 3.5%
Did your clear yes refer to the fact that I will probably receive a loan for additional financing in the range of 3-8k euros from the same bank? My only concern is that if the loan amount is not sufficient, I don’t want to be left unable to fully complete my construction measures. An additional financing would definitely be in the low thousand-euro range. Certainly, only the bank can ultimately answer this for me, but you also have experience, possibly.
My question is also, if I carry this out at the same bank as the existing construction financing loan, will my creditworthiness be meticulously checked again and will I have to submit all documents such as bank statements from the last three months, proof of income, etc. again, or will the creditworthiness be recalculated based on the existing documents, since I am already known as a borrower at the bank? At the time of taking out the existing construction financing loan, I was single, permanently employed with a net income of around 2,600 euros and had no debts, loans, etc. At the time of a possible additional financing, I would be married (my wife has a child, but I am not the biological father), would have only the construction financing as a loan, and the net income would remain about 2,600 euros net, and I would still be permanently employed.