Construction output in Belgium fell 4.8% year-on-year in November 2025, following an upwardly revised 0.8% drop in the previous month. This marked the steepest decrease in construction activity since March, driven by declines across all subsectors, including building construction (-4.9% vs -1.1% in October), civil engineering (-4.2% vs. -2.9%), and specialized construction activities (-5.3% vs. 0.2%). On a seasonally adjusted monthly basis, construction activity slipped 0.3% in November, reversing a 0.3% gain in the previous month.