Spatiotemporal expression and application of urban residential solar rights based on CityGML-LADM

Abstract

ABSTRACT Property disputes are frequent occurrences in rapidly urbanizing regions. Among the legal issues concerning building property rights, solar rights disputes are prevalent because text clauses on solar rights rely on diverse measurements or calculations. Moreover, previous studies on measuring solar rights addressed only the sunlight duration and neglected the daylight factor (daylighting coefficient), which is an integral component of solar rights. Therefore, this study proposes a 3D spatiotemporal model for effectively measuring solar rights by taking both the sunlight duration and the daylight factor into consideration. This model would be technologically valuable in avoiding or settling legal disputes. Taking the specifications of the solar rights of building property in China as a case study, the proposed spatiotemporal model clarifies the complete solar rights of residential units and is implemented by integrating a geometric model from CityGML with a property model, namely, the Land Administration Domain Model (LADM). Three real typical cases are adopted to show the applicability and benefit of the 3D spatiotemporal model in resolving legal property disputes.