Construction output in Bulgaria rose by 0.6% year-on-year in September 2026, down from a downwardly revised 2.2% increase in August and marking the weakest growth since January 2024. The overall slowdown reflected more moderate growth in building construction (4.1% vs 8.4% in August), alongside a downturn in civil engineering, where output fell 1.5% after a 3.0% rise in the previous month. At the same time, the contraction in specialized construction activities eased, with output declining 1.8% compared with a 5.0% drop in August.
On a seasonally adjusted monthly basis, total construction output decreased by 1.1% in September, following a 1.0% decline in August. The fall was driven by lower activity in building construction, which slipped 2.0% after remaining flat in the previous month, and in civil engineering, where output was down 1.2% after a 0.6% decrease in August. In contrast, specialized construction activities inched up 0.2%, partially rebounding after a 2.5% fall in the prior month.
