I am not sure if real estate prices will fall as sharply as some people are writing here in the thread. At first glance, it would be logical since construction interest rates are rising, but many factors speak against it as well. In some regions, such as the Stuttgart metropolitan area, some experts even expect further increases (I think this was also stated in the current Postbank Housing Atlas). However, the big price surge of recent years is certainly over, I think so too. But this does not necessarily mean that prices will collapse by 30 percent everywhere and that in three years we will have the same real estate prices as ten years ago. I myself live in southern Germany (Stuttgart metropolitan area) and rather believe that prices will trend sideways, or if they fall, only slightly. I also do not have a crystal ball. But if we assume that your property has lost 10 percent in value in three years: then it would still be worth about 540,000 euros. However, interest rates will probably continue to rise or at least not fall, so the overall burden on the financing is hardly likely to change.
As an owner-occupier or landlord, this can be irrelevant up to a certain point. Because even if the apartment is only worth 540,000 euros in three years, you do not have to sell it but can rent it out. Rents will definitely not fall, but rather rise. If you are paying off a loan, the rent should at least cover the loan installments (observe tax issues!).
It only becomes problematic if you pay for the apartment entirely from your own equity now and speculate that you can sell it at a profit in three years to get your own equity back. That would be too uncertain for me. I would try to find a solution in which you factor in this uncertainty and keep all options open. For example, finance the apartment partly with a loan, with the option to possibly transfer the loan to another loan (restructure, although banks do not always agree to this in the end).
In any case, I would not invest all your equity in this apartment if you already know now that you want something bigger later.[/QUOTE]