This paper documents facts about differences in household portfolio composition across European countries, using the Eurosystem's Household Finance and Consumption Survey (HFCS) as a data source. On the asset side of balance sheets, the focus of our analysis is on the distinction between housing wealth and other assets. On the liability side, we distinguish types of debt which are collateralized by housing. As a consequence, this paper addresses cross-European differences in home-equity positions. These facts inform the design of a European Household Finance Common Reference Model (HFCRM). This reference model identifies a common structure of key factors in household financial decision making. At the same time the HFCRM is flexible enough t...