Representing 3D data in a cadastral database – Queensland Case

Urban environments have seen the growth of infrastructure and buildings above and below the ground due to limited availability of urban land. Cadastral jurisdictions have traditionally represented properties as a closed polygon with associated registered rights: termed as two-dimensional (2D) cadastre. Modern cadastral jurisdictions are facing increasing pressure to register and represent properties above and below ground: termed as three-dimensional (3D) cadastre. The cadastre has traditionally been designed around properties on the surface of the land, called base parcels, which has made the storage and representation of 3D data in a 2D database very challenging. It is important to understand the general complexities of a 3D cadastre as well as particular 3D related needs within each cadastral jurisdiction. There are Institutional issues such as 3D specific legislation, policy, standards; and technical guidelines; Operational issues such as registration of 3D properties and their interaction wit