BIM/IFC-based 3D spatial model for condominium ownership: a case study of China

Abstract

ABSTRACT As the number of high-density buildings has increased, the management of property with complex condominium ownership has become an ongoing challenge in property registration and management. The three-dimensional (3D) modeling of condominium ownership has emerged as an effective means of meeting this challenge and has attracted great attention from fields such as geographical information science, urban planning and management, and property administration. Much progress has been made in building 3D models of condominium ownership; however, existing studies are all on a case-by-case basis and have left some critical issues unsolved, such as vague ownership boundaries, spatial rights without physical counterparts, and the unfixed spatial extent. The purpose of this study is to construct a 3D building ownership model with multiple levels of detail in the context of Chinese law to overcome the defects of 3D models above. This 3D model is presented in a case study of China by subdividing ownership boundaries based on clarifying the internal structure of condominium ownership, embedding the apportionment mechanism, and integrating the semantics, attributes, and geometry associated with the physical and legal entity of the condominium. The proposed 3D model is implemented by extending Building Information Modeling (BIM) based on the Industry Foundation Classes (IFC) and inheriting legal information from Land Administration Domain Model (LADM). In this study, examples of condominium ownership from three real legal dispute cases in China are analyzed and tested. The study clearly demonstrates that the proposed model can provide a better cognitive understanding of the legal space of property by rendering unambiguous ownership boundaries and presenting the spatial internal structure of ownership, which offers solid technical support for dealing with property registration and many legal dispute cases about condominium ownership.