The Binnenhof complex in The Hague is home to the Dutch Senate, House of Representatives, Council of State, and Ministry of General Affairs. The complex, a centuries-old monument that is still constantly ‘in service’, is owned by the Central Government Real Estate Agency. After a period of intensive use, the Binnenhof complex is now plagued by a wide variety of technical and structural defects. Large-scale renovation will be required to ensure the safety of visitors to the complex and an improvement in the working conditions of those who work there. Last, but not least, the renovation is crucial to the long-term maintenance of a significant part of our cultural heritage.