Brussels Office Market Dynamics Q1 2026

Transaction activity in Brussels's office market fell to historic lows in Q1 2026, with take-up of 40,496 sq.m. down 49% year-on-year—the weakest performance in 25 years—attributed to geopolitical tensions slowing decision-making, while city-wide vacancy remained stable at 7.7%, prime rents held at €400/sq.m./year in the European District, and Grade A space accounted for 43% of transactions. The investment market stalled with only €82 million in transaction volume nationwide, though the outlook suggests potential take-up recovery later in 2026 driven by EU deals despite the possibility of increased vacancy from speculative completions.