This paper will give an insight into modern ways of buildings modelling considering the case of TU Delft's campus with the use of classic photogrammetry tools and terrestrial laser scanning data. In addition we will use airborne LIDAR (Light- Imaging Detection and Ranging) for generating of extrusion models. The used methods aim to obtain models which can be used in Geographical Information Systems supporting different level of details. The detail factor may vary from pure city models, which are only blocks containing no facade information, to more complex 3D models with facade information as a texture and/or geometry. In our paper we will make some comparisons using a building model and discuss upon its information type and the achieved accuracy. Further more we will show an application example for the extrusion models.