The architectural design business is marked by a progressive increase in operators all cooperating towards the realization of building structures and complex infrastructures (Jenckes, 1997). This type of design implies the simultaneous activity of specialists in different fields, often working a considerable distance apart, on increasingly distributed design studies. Collaborative Architectural Design comprises a vast field of studies that embraces also these sectors and problems. To mention but a few: communication among operators in the building and design sector, design process system logic architecture, conceptual structure of the building organism, building component representation, conflict identification and management, sharing of knowledge, and also, user interface, global evaluation of solutions adopted, IT definition of objects, inter-object communication (in the IT sense). The point of view of the research is that of the designers of the architectural artefact (Simon, 1996), its focus consists of the relations among the various design operators and among the latter and the information exchanged: the Building Objects. Its primary research goal is thus the conceptual structure of the building organism for the purpose of managing conflicts and developing possible methods of resolving them.