FX.co ★ Australia’s AIG Construction Index Plunges Deeper Into Contraction in September

Australia’s construction sector sank further into contraction in September, with the AIG Construction Index dropping to -34.5, down sharply from -6.9 in August 2026. The latest data, updated on 6 October 2026, signal a steep deterioration in industry conditions over the month.

The move from an already negative August reading to a significantly lower September figure suggests mounting pressure across the construction landscape, potentially reflecting weaker project pipelines, delayed investments, or broader economic headwinds. The deepening contraction underscores growing challenges for builders, contractors, and related suppliers as activity cools and sentiment turns more cautious across the sector.