A cadaster is normally a 2D parcel based, and up-to-date land information system containing property unit information (e.g. rights, restrictions and responsibilities). To make efficient use of, foremost urban, space, several countries have introduced 3D cadaster. 3D property formation is an effective method for subdividing and separating the ownership of different activities related to the same ground parcel in densely-built areas e.g. in cities. However, the definition and visualization of 3D property units are still based on 2D maps and drawings complemented with textual description.

In this project we will study how 3D models can be used for defining and visualizing 3D cadaster, foremost using BIM models and to some extent also city models. An important issue here is how the digital 3D models can be linked to other cadaster information, stored in e.g. LADM (Land Administration Domain Model). To facilitate this, the actors in the 3D cadaster process (mainly property owners, construction companies, cadaster units and surveying units) must share digital information. In this project we will study the process and techniques used for this information exchange; this study will be an extension of previous studies in using BIM for 3D cadaster. Furthermore, this project will interview the actors about what would motivate them to share the digital information in a digital 3D cadaster process. The main outcome of this project is a process model of cadastral information exchange between stakeholders linked to information model standards, as well as knowledge about how shareholders could be motivated to share cadastral information.

The project is a continuation of a previous Smart Built Environment project in the research platform, which among others has led to a licentiate degree for one of the project partners; this project will enable a continuation of her studies towards a PhD degree.

Project leader: Jenny Paulsson, Kungliga Tekniska Högskolan