The availability and interpretability of information is key to a successful construction project and the steering of real estate. Due to the current possibilities in methods and software (such as Building Information Modelling (BIM)) more information can be collected and processed than before. It is expected that through BIM the flow of information between stakeholders and project phases is improved. Methods and tools, however, cannot determine which information is needed in respect to corporate necessities, real estate specific, project specific, economical or legal aspects. This leads to the following research questions: - How can the information demand in a certain (project-) situation be determined? / - What is the necessary information? // At first an extensive literature review was conducted to analyse the terms ‘information’ in the context of BIM. From there a methodology was developed and tested how the information demand can be examined. On that basis a project in collaboration with real estate departments of prestigious companies is now carried out to identify relevant information and visualise it in a data-tool. The result of the research thus is firstly a methodology to identify relevant information depending on the objectives and given circumstances. The methodology can be used in consulting building owners or other stakeholders to determine their information demand prior to e.g. the start of a new project. This task is a new field of work for real estate professionals and is in intense demand in the context of BIM. Secondly the research will provide a general data tool which will make it possible to determine the specific information demand e.g. for a specific task or phase of the project. This data tool will be valuable to specify data requirements needed for example for defining the BIM deliverables and issue a BIM Project Execution Planning guide.