The data collection for the Key register WOZ (Waardebepaling Onroerende Zaken, or Valuation of Immovable Property) consists of several data, needed to relate this value both to an immovable property and to a stakeholder. These are: “Established value”(WOZ value), a BAG-listed address, and a link to cadastral parcels and/or addresses, and to BAG dwellings, stations, berths, and/or objects.