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The European Union (EU) has adopted a wide range of 2030 targets and policy objectives to improve the energy efficiency of existing building retrofits. Building Information Modeling (BIM) is a tool which can facilitate energy-driven refurbishments, achieving a high-quality sustainability rating in a short period of time. However, while various BIM procedures are well established and widely used for new constructions, this is not often the case when it comes to retrofit projects. This paper outlines a BIM-based Business Process Model (BPM) to support Energy Service Companies’ during the process of a building’s refurbishment and thus narrows the gap between the expected and actual energy performance of the building.