Three-dimensional (3D) real property has been the subject of increased research activity during the last decade. This article continues the discussions of the legal framework sessions at the 4th international workshop on 3D cadastres in Dubai 2014 in order to further develop and analyse the legal concepts of 3D real property, and presents an overview of experiences from 3D property use and registration. The outcome is intended to initiate discussions on the legal framework of 3D cadastres and aims at identifying the main topics concerning the legal aspects of 3D property and cadastre.