Registration of 3D Situations in Croatian Land Administration System

3D Cadastre is very interesting topic in the geodetic and cadastral scientific inter-national community, but there are a few countries that can boast with a fully established and completed 3D cadastre. Establishment of 3D cadastre is a long and tedious process, just as a traditional 2D cadastre was not created overnight. This paper will describe the current method of registration of property and separate parts of real property (apartments and office spaces) in the Croatian cadastre and land book as the basis for the establishment of 3D cadastre. Certain preconditions for the formation of 3D Cadastre in Croatia have already been met (e.g. separate part of real property ownership is possible to register in the cadastre and land book). This paper proposes two new registration solutions in Croatian Land Administration System (Unified Feature Identifier and registration of apartment volume).