Complexity of urban construction and land use is increasing which cannot be represented adequately by 2D systems. The successful construction of a Spatial Information Model of 3D Real Estate (SIM-3RE) is valuable to achieving a refined administration of 3D space and property-rights of urban real estate in China. In this paper, the Nanjing Gulou Central Business District was selected as an experimental region, and the historical data of surveys and maps of the parcels and buildings were collected. After the supplementation of some missing data (such as height) by surveying, the SIM-3RE was constructed using the 3D partitioned units for buildings and 3D parcels of land.

城市建设和土地利用的复杂性日益增加，二维系统无法充分表示。3D房地产空间信息模型（SIM-3RE）的成功构建，对于实现我国城市房地产3D空间和产权的精细化管理具有重要意义。本文选取南京鼓楼中央商务区作为试验区，采集地块和建筑物的勘测和地图的历史数据。在通过测量补充一些缺失的数据（如高度）后，SIM-3RE 是使用建筑物和 3D 地块的 3D 分区单元构建的。