The main points:

Total construction output is estimated to have fallen by 1.0% in the three months to August 2026; this is the second consecutive decrease in the three-monthly series.
Over the three-month period, both new work and repair and maintenance fell, by 1.4% and 0.3%, respectively.
At the sector level, five out of the nine sectors fell in the three months to August 2026; the main negative contribution to the decrease was private new housing, which fell by 3.2%.
Monthly construction output is estimated to have fallen by 0.2% in August 2026; this is the fourth consecutive decrease in the monthly series, including a decrease of 0.5% in July 2026 (revised from an increase of 0.1%), and a decrease of 0.3% in June 2026 (revised from a decrease of 0.1%).
The decrease in monthly output in August 2026 came solely from a decrease in new work, which fell by 0.7%, while repair and maintenance grew by 0.4%; the main contribution to the monthly decrease in new work was private new housing, which fell by 1.9%.

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ONS Construction Output in Great Britain: Fourth Consecutive Decrease in Monthly Series