As media-orientation and access to media becomes increasingly widespread in society, so too is the availability of architectural designs on the internet. In most cases these are published in the form of raster images of plans, elevations and perspective drawings together with written descriptions on architecture databases and platforms such as archINFORM or nextroom, as well as on the homepages of the respective architecture offi ces. Knowledge is generally regarded as useful information. However, the literature does not elaborate clear differentiations between what is knowledge, and what is information and data. In our view it is the preparation of information in data structures that makes it useful as knowledge. Knowledge management systems are therefore intelligent information systems in which knowledge is presented and made useful through representation and modelling methods (Abeckerand Decker, 1999).