Particularly in large cities, a shortage of living space is one of the greatest challenges to be overcome. Moreover, living space is often not used efficiently and in line with demand. For example, older single people live in apartments that are too large for them alone, while young families often search unsuccessfully for just such apartments.
So-called apartment exchange portals are intended to combat precisely this problem. Using these portals, apartments can be exchanged simply and easily, often even with the old square meter prices being taken over. In some cities, the party moving into a smaller apartment even receives a one-time financial bonus.