This course reviews current developments in object-based CAD technologies, with particular emphasis on practical issues of application and implementation. The theoretical component of the course deals with issues of object modelling, information interchange, intelligent objects and concept modelling. The practical side of the course investigates the implementation of object-based CAD technologies in the context of a specific CAD system, covering object manipulation, IFC model interchange and object intelligence. The hands-on component of this course is generally provided by participating in an undergraduate course on building information modelling, while the more theoretical component is covered in a weekly postgraduate seminar. Assessment is mainly through practical hands-on work and one major written report.