AutoCAD is the most used application for real estate development over the past 25 years. Many real estate portfolios consist almost exclusively of AutoCAD designs. In the coming years, a transition will take place from real estate that has been developed in AutoCAD towards development in BIM. However, there will still be a lot of work done in DWG files. BIMlink has created a plug-in for AutoCAD users to upload new versions of their work directly from AutoCAD to BIMlink. An AutoCAD (DWG) viewer has been developed in the online environment. It automatically recognizes Xref links. Layers and Xrefs can be turned on and off independently of each other.