Project name: Gasunie headquarters Location: Groningen, the Netherlands Size: 45,000 square metres Number of storeys: 17 Type of construction: Office building Sector: Non-residential Investment: 63.5 million euros Architect: Alberts and Van Huut Period: 1992 Activities: Construction cost management for the construction company Nelissen van Egteren (NVE), now BAM. You can see the final result here.