You can import your own 3d content through a variety of existing platforms. Recently, platforms such as Revit, autoCAD and ArchiCAD and 3d platforms such as 3ds Max and Maya have become increasingly compatible. Through these 3d platforms you can easily and flawlessly export your architectural 3d data to the Visibuild platform.
Visibuild is also working on creating a direct link between architectural software and the online real-time 3d environment.
There are many external 3d content libraries, one of which is Google 3d warehouse. Its license allows the 3d content to be used in other 3d applications outside of google sketchup. This makes the 3d warehouse an invaluable resource for Visibuild users, as they can import a variety of objects such as furniture, plants, cars and more.
Visibuild aims to create its own exporter tools that will completely streamline the art pipeline. However currently, we rely on 3rd party exporters. Here is a list:
3ds max: http://www.ogremax.com
Google Sketchup: http://tinyurl.com/sketchupexport
AutoDesk Maya: http://tinyurl.com/maya-exporter
Cinema 4d: http://tinyurl.com/C4D-exporter