After the end of World War I, the state responded to the rapid population growth in the country's industrial centers by awarding subsidies for non-profit housing construction under the Prussian Housing Act. As a result, new housing construction companies arose in Germany. 1919 also saw the founding of Allgemeine Bauverein AG in Essen, which was to construct the former AllbauHaus on Pferdemarkt, a building with a varied history. Built in 1928, the multifunctional commercial and office building designed by Essen architect Ernst Knoblauch represented a modern, rational and businesslike building type for its time. After surviving the Second World War almost unscathed, it is now a listed under monument protection. During the Ruhrtriennale 2021, US artist Asad Raza will show his large-scale installation Absorption here.