ecoffice | BEL
| Program | office building, HQ Holcim |
| Client | Thomas & Piron |
| Collaboration | Architecture et Climat, CSTC, Matriciel, Sixco, contractor Thomas & Piron |
| Surface | 4 107 m² / 44 207 ft² |
| Performance | Passive House, BREEAM very good |
| Location | Nivelles (BEL) |
| Status | completed 2013 |
| year | 2010 |
