The demands for an increasing cooperation of all parties involved in the building process and the implementation of highly specialized software-applications outlines the significance and necessity of new methods and concepts for the development of a computerized integration of all participants. The aim is to improve cooperation, communication and information between the participating parties. The scaffolding is the establishment of an efficient and faultless data- and information interchange between software applications and specialists of different trades. A digital building-model in terms of a “virtual building” would form the basic level for the integration of relevant data. This building model would contain all data and information relevant to the projected or existing building. With reference to todays situation in architectural offices and according to realizable improvements, this article will demonstrate courses for future IT-support on the basis of an ongoing research project. The presented project is part of the special research area 524 “Materials and Constructions for the Revitalization of existing Buildings” which is funded by the Deutsche Forschungsgemeinschaft. It deals with the integration of various parties that are involved in the revitalization process of existing buildings as well as with the provision of adequate information within the planning process resting upon the survey of existing building substance.