We are capable of undertaking modelling of complex façade forms and structures using Nurbs software packages such as Rhinoceros 5.0. Sharing information across platforms and packages enables us to further validate the structural integrity or environmental performance of the envelope. Importing complex massing into parametric modelling packages such as Revit enables us to provide facade BIM models to the team that interface with discipline models, aiding the architect in their coordination and clash detection exercises.