The diagnosis of the physical preservation of a property requires a series of layers of information that make it possible to define an intervention strategy to restore functional, structural, and aesthetic conditions. From this perspective, it is necessary to register all the physical and material features with the highest possible accuracy. To obtain a systematic evaluation, it is necessary to rely on a critical survey based on direct observation of the building. At present, it is possible to incorporate the use of digital tools designed to obtain detailed and accurate readings of each of the parts and elements of the building. The interface between the building and the computer is defined here as a 3D point cloud.