Tom van Soest focused on circular transformation of the building sector. In Eindhoven many buildings were left behind empty. Lack of users, bad quality of the buildings and perhaps a belief in the ever-growing real estate market created a situation of buildings becoming obsolete and therefore demolished. The solution was clear: perhaps the buildings are waste, but if you find value in the materials they are made of, the situation will change drastically. StoneCycling found a way to use industrial and demolition waste as raw materials to create new unique building materials with higher value. Today, StoneCycling provides a WasteBasedBrick, a variable brick model that can be made with different ingredients according to whatever is available locally and whatever is suitable for the future building. Van Soest and his colleagues experiment with new iterations of the WasteBasedBrick in a laboratory in Limburg, sourcing materials for it in a radius of about 100 kilometres.