ABSTRACT
Multilevel use of land is not new. For example, in the Middle Ages cellars below roads along wharfs (werfkelders) already existed in Utrecht, the Netherlands (Figure 3.1), and for more than a century stores, workplaces, pubs, and even houses have been situated below railway viaducts. As was mentioned earlier, individualization of property started originally with a subdivision of land using 2D boundaries, causing a 2D parcel to be the base cadastral registration unit. Therefore, cadastres throughout the world had to find solutions to deal with 3D property situations. This chapter tries to find an answer to the following questions: How are 3D property situations recorded in current cadastral registrations and what are the complications of these recordings?
