but for us it is a frighteningly large amount.
It is a large amount for many.
That is why we also advise leaving out the additional gables. Whoever wants to save costs does not add complicated roof structures or any bay windows.
500,000€ is the absolute pain threshold. We estimate 400,000€ for the house, 40,000€ for the development, 20,000€ for the kitchen, and then there are 40,000€ left for all other costs.
Then let's do a reset and read our warnings regarding the costs. Additional construction costs are completely missing. For 400,000€ just for the house, you get about 135 sqm, simple construction. If you deduct 30,000 construction side costs from the possible capital, only 370,000€ remain for the house, so 125 sqm. :(