The German Property Federation (ZIA) is the leading umbrella association for the property sector. With its registered office in Berlin and a European office in Brussels, it speaks through its more than 300 members, including 30 associations, on behalf of approximately 37,000 industry companies right across the value chain. ZIA provides comprehensive, unified representation for the interests of the real estate sector in all its diversity at both national and European level, including as a member of the Federation of German Industries (BDI) and the German Economic Institute (IW). The President of the association is Dr Andreas Mattner.