IFC-CityGML Data Integration for 3D Property Valuation

Abstract

The accurate assessment of proper value in complex and increasingly high-rise urban environments is a significant challenge. Previous research has identified property value as a composite of indoor elements, such as volume and height, and 3D simulations of the outdoor environment, including variables such as view, noise, and pollution. These simulations have been preliminary performed in taxation context; however, there has been no work addressing the simulation of property valuation. In this paper, we propose an IFC-CityGML data integration approach for property valuation and develop a workflow based on IFC-CityGML 3.0 to simulate and model 3D property variables at the Level of Information Need. We evaluate this approach by testing it for two indoor variables, indoor daylight and property unit cost. Our proposed approach aims to improve the accuracy of property valuation by integrating data from indoor and outdoor environments and providing a standardized and efficient workflow for property valuation modeling using IFC and CityGML. Our approach represents a solid base for future works toward a 3D property valuation extension.

3D Cadastral Database Systems—A Systematic Literature Review

“…These models have been formulated to meet the requirements for 3D cadastres in different domains such as underground space management, marine space, land and property valuation, indoor navigation, urban planning, real estate and property management, and facility, energy, and utility networks management. However, integration of them will pose new challenges in terms of interoperability and consistency due to incompatibility in geometric and semantic coherence, semantic mapping, coordinate systems, scope of interest, and data structures [5,32,[131][132][133][134][135]. It will sometimes be impractical and time-consuming due to the complex data structure [55].…”