Abstract
The massive property development of high-rises and complex structures above and below the ground surface in cities indicates the lack of land and high demand to use spaces. However, the existing land and property administration systems are mainly two dimensional and not capable of efficiently managing these complex spaces. As ownership rights on plans are recorded in paper or PDF, understanding these rights and making effective decisions and analyses can be difficult without having experience in the art of reading and interpreting plan information. This paper attempts to address these issues by presenting a prototype for visualizing three-dimensional land and property information. The aim of this prototype is to illustrate and communicate the requirements and benefits of a 3D digital cadastre platform. The prototype is a web-based application and includes functionality to display both legal and physical data, interact with 3D models, display administrative data, identify objects and search objects, visualize cross-sections, and undertake measurements in 3D. For this prototype, a multi-story building was selected as a case study and its 3D model was imported into the prototype to display ownership rights. The prototype was then evaluated by various stakeholders and their feedback was considered for future enhancement.
Highlights
The growing population and lack of available land in urban areas has led to intensive property development above and below the ground surface
This study has focused on a 3D digital cadastre graphical user interface, necessary functions and the method of visualizing 3D property objects
All participants were from Victoria, Australia, as the case study is in this state and the prototype has been implemented based on legislation and regulations in Victoria
Summary
The growing population and lack of available land in urban areas has led to intensive property development above and below the ground surface In these developments, overlapped ownership rights are currently registered in paper/PDF-based plans. This method of registration is not efficient as it does not record ownership boundaries in a digital format and as a result, spatial queries (e.g., finding the car park and storage associated with an apartment) are not supported. This data cannot be readily and efficiently used by other stakeholders such as the Public, land surveyors, developers, real estate agents, strata managers, architects, and city councils.
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