This study provides a preliminary assessment of the trade-off between deep energy retrofit and improving the building intelligence within an energy renovation process. A standard Danish office building from the 1980’s is considered as a case study. A detailed energy model was developed in EnergyPlus to simulate the dynamic performance of the case study building. Various deep energy retrofit measures were implemented and assessed. In addition, different measures to improve the energy efficiency and intelligence of the building were investigated and simulated with emphasis on European Standard EN 15232 recommendations for control and management of heating, ventilation and lighting systems.