Seeki.eu lists 15,000+ properties for sale and 45,000+ to rent in Germany.
The median asking price is €368,000, or €3,043 per m² on a typical 125 m², across sale listings that publish both a price and a floor area.
On the rental side, the median asking rent for an apartment is €700 a month, across apartment rentals that publish both a price and a floor area.