Exchange of computerized data is today at the centre of interest for most of trade partners and authorities of standardization. The aim is to set up continuous and cooperative processes of exchange, without “re-modelling” or loosing information. The paper presents our research on building modelling at design stage and its application to data exchange during the design/construction process. An experimentation about data transfer between two software is presented. The first one realizes the design process according to the developed data model (arTec). The second one is a trade software for the design of wood-frame panels (Woodpecker).