There will only be a short phase of falling prices. Maybe 6 - 8 months. Then money will be printed like crazy again and interest rates will be lowered. That will be the death blow for the euro and inflation will gallop away from it.
Not only the construction industry will face hard times. The entire industrial complex in Germany will be on the brink of extinction. In particular, the automotive industry will suffer greatly, as will the supplier and service sectors.
And real estate prices will also collapse in the short term.
The construction trade is, of course, now paying the price for having extremely leveraged order volumes with cheap loans.
No one can manage real estate financing with 8 percent interest at these prices anymore. Meanwhile, there are first offers with 4 percent fixed deposit interest rates. The debt of one is the asset of another.