The paper presents the example of an adoption of 2D cadastral data to 3D data from inventory measurements and airborne laser scanning data in order to integrate them in a common spatial reference frame and propose the solution for the implementation of the 3D cadastre. The example is related to the subway in Warsaw. The paper introduces the idea of the 3D cadastre for objects of special interest that need this type of solution for transparent legal registration of the property. In order to describe a range of the 3D properties related to subway tunnels and land properties with buildings located over the subway, airborne laser scanning data were provided. The data were used for 3D modelling of buildings and to define the buffer for 3D properties. Terrestrial scanning data were used to prepare generalised 3D tunnels. Aiming to integrate various data, the reference coordinate system was also defined. Such an integration of various data allows the visualisation of 3D properties, which is user-friendly and provides opportunities for further spatial analyses.

Key words: cadastre, 3D cadastre, real property, 3D GIS, 3D spatial analysis, subway, building model