Sustainable development issues are currently the driving forces in many building projects. The building envelope is critical for the architectural expression as well as large parts of the environmental performance. This study tries to investigate the advantages of multidimensional computer aided modelling and simulation for a sustainable facade design approach. A first step towards nD modelling for sustainable design is to establish a list of parameter which are used as design criteria: Environmental performance, thermal visual and acoustic comfort. Computer simulation and analysis of different building elements can help to determine the performance according to a set of design parameter. Environmental impacts due to energy consumption are an important parameter but it is believed that comfort criteria need also to be accounted for.