The value retention of real estate is increasingly ensured by the inclusion of sustainability aspects in the planning. As a result, life-cycle considerations of the future earnings situation of a property are already necessary in the project development phase. By comparing the revenues to the life cycle costs, the life cycle return (LCR), as it is called by the authors, can be determined as a prognostic parameter for assessing the profitability of an investment. In this paper, the project information available at an early stage is integrated into a digital building model to determine the LZR. Building Information Modeling (BIM) can reduce the uncertainty of the cost calculation in an early project phase by linking the digital planning status with relevant building information. Based on a digital building model, it is thus possible to determine the LZR in a way that is comprehensible and adaptable to planning variants. The breakdown of all revenues and costs relevant for the life cycle is necessary for this. Changes and additions to the building model require a continuous and rapid adjustment of the calculations to the respective planning status. This makes it possible to continuously check the initial parameters defined at the beginning of the project.
