IBISWorld forecasts private non-residential construction capital expenditure to fall by 1.6% in 2024-25, to total $120.5 billion. The persistence of high interest rates is the major cause of weakening investment in non-residential construction. Following an extended period of record low interest rates, the official cash rate was jacked up to its highest level since 2012, which has sharply increased the cost of borrowing. A post-pandemic surge in commercial construction drove high rates of investment despite rising interest rates. However, in 2024-25, the persistence of elevated interest rates is starting to kick in and the high cost of borrowing is putting downward pressure on investment, particularly in the commercial construction sector. At the same time, falling commodity prices has hurt mining investment, which has contributed to this downward trend.