I cannot predict the future, but here are a few pointers: So far, short-time work benefits and similar measures have prevented large-scale loan defaults. Looking at the annual financial statements of the industry, a crisis and major cutbacks are rather not to be expected in the near future. Lockdowns mainly affected areas where homeownership is already rare. Currently, it is not expected that a large number of people will have to sell within the next 1-2 years, which would significantly increase supply. On the demand side, the outlook is not better in the short term. Due to low interest rates, demand remains high, and as long as the labor market does not collapse significantly, demand will continue. The increase might slow down somewhat because banks are no longer willing to keep up with the high prices and will therefore require more equity. However, this will not lead to falling prices.
When it comes to building, a few other factors come into play. Building areas have much more interest than available lots. Accordingly, business is good for construction companies; a large prefab house manufacturer communicated to us a 15-month waiting time. In this situation, no one lowers prices, with an approximate annual price increase of 4-5%. Additionally, there are always further requirements for new buildings that make construction more expensive. The next phase of the energy saving ordinance is certain; then the currently KfW55-standard house will become mandatory. That is more expensive, and the €18,000 subsidy will no longer be available. Furthermore, there are various municipal regulations that make affordable building more difficult: mandatory photovoltaic systems, retention cisterns, green roofs, and so on. In this respect, it is better to build early than to wait.
But: it must also be financially feasible. If you have little equity, that is problematic. It might be worth saving more in that case. Exact details can only be provided with concrete numbers regarding equity, income, and your desired place of residence. Regardless, the search for a plot alone can take years. Therefore, it doesn’t hurt to start as soon as the rest fits and to save equity in the meantime.