Digital estate plays a very important role in constructing the national economy.First, the basic spatial database of the houses and database of the building tables are considered from the status of estate management and information construction. The integrated “groundbuildinghouse” database which manages the spatial and business data is established based on the database of the basic building tables. Then, the integration framework of digital estate is presented using GIS, MIS, OA and WFS. During such a process, the estate system and other related systems are integrated and the uniform estate platform is established. The proposed approach is applied successfully in the digital estate construction of Shenzhen. The results of this work provide a new way for the design and implementation of digital estate construction systems.