FIG Working Week: the FIG Working Week 2017 will be from May 29 to June 2 in Helsinki, Finland.


In the past decade various activities have been conducted related to 3D Cadastres. The start of the international awareness of this topic was marked by the first Workshop on 3D Cadastres (sponsored by FIG commissions 3 and 7), organized by Delft University of Technology in November 2001. This was followed by virtually a session at every FIG working week and congress afterwards (stimulated by the 2002-2006 FIG working group on 3D Cadastres). Within cadastral organizations this was paralleled by on-going developments at Cadastral organizations in many countries to provide better 3D-support. The increasing complexity of infrastructures and densely built-up areas requires a proper registration of the legal status (private and public), which only can be provided to a limited extent by the existing 2D cadastral registrations. Despite all research and progress in practise, no country in the world has a true 3D Cadastre, the functionality is always limited in some manner; e.g. only registering of volumetric parcels in the public registers, but not included in a 3D cadastral map, or limited to a specific type of object with ad hoc semi-3D solutions; e.g. for buildings or infrastructure. At the FIG Congress in April 2010 in Sydney it was decided to form again a working group on 3D Cadastres in order to make further progress with the subject. The registration of the legal status in complex 3D situations will be investigated under the header of 3D Cadastres. Starting point of the working group is the observation that increasingly information is required on rights, use and value in complex spatial and/or legal situations.