Since the last decades and especially since the financial crisis of 2008, financial companies and private investors have (re)discovered real estate as an profitable investment object and asset. However, it is not so much the built structures as the underlying land, which has become the object of speculative investments. As a result, land prices, and the rents of the buildings built upon them, have risen continuously. According to economist Ottmar Edenhofer, around 80% of the rise in housing costs is due to land price developments (Trares 2018). Consequently, the provision of affordable housing is becoming increasingly difficult, especially with regards ...