Activity in commercial lending dropped a whopping 12% in May, according to figures released by the ABS, while housing finance grew 0.2%.
The report's seasonally adjusted figures hinted at difficult times for commercial brokers.
The overall value of commercial lending fell from $35bn to $31bn in the space of a month.
In personal finance, activity remained steady with a growth of 0.4%.
Housing industry not sated by rise in finance