This essay is part of a larger project concerning the survey and the restoration of the ex villa Sevastopulo, inside the University Campus of Trieste. The aim of this research was to reconstruct a model of the building thanks to the techniques of digital representation and photo-modeling, to verify the consistency between different methods of data processing. The numerical information were acquired with different scales depending on the type of the elements. The results produced a 3D model of the building by processing survey measurements, archive’s drawings and photographs.