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Towards 3D and 4D Cadastre in Croatia

Cadastral systems need to be designed and supported from three dimensional spatial perspectives. Previous researches of Croatian 3D cadastre through relevant use case examples suggest better real property separate parts registration as well as 3D building visualization (apartments, office spaces, etc.). Next to the 3D aspects of rights and restrictions, the temporal aspect, the fourth dimension of interests in real property, is an important aspect of cadastral registration. History of changes on the cadastral parcels is subject of interest for key users, mostly parties. For this purpose, Croatian Land Administration System was adapted to become a four-dimensional (4D cadastre). In the land book and cadastre all changes since their inception are recorded with the time component and date of the change. Previous researches have shown that Land Administration Domain Model (ISO 19152) is good basis for the Croatian 3D cadastre. This paper discussed that legal and institutional aspects of Croatian 3D cadastre should be considered in 3D cadastre development for each jurisdiction. Legal support to register and represent 3D properties (legal aspect), institutional support to establish relationships between involved parties (institutional aspect), and technical support to realise 3D cadastre (technical aspect) are basis for 3D cadastre development. This paper presents some 4D cadastre situations in Croatia. Goals of the new Law on Cadastre and State Survey are legal regulation of 3D cadastre, as well as the central repository establishment of Utility cadastre under the authority of the State Geodetic Administration. This paper also suggests better public utility infrastructure registration by overlapping Land cadastre and Utility cadastre and unifying records at the state level, because Utility cadastre in local government despite statutory obligation from 1999 was not developed in the past 15 years.

3D cadastre; 4D cadastre; Croatia; LADM; Utility cadastre

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