Via the AFR:
At the end of May, the average days on market in Sydney for houses has risen to 63 days up from about 45 days at the peak of the market last year. Days on market have been hovering around the 60s since March. For units, that number is now 64 days, rising from last year’s peak of 54 days.
…It takes an average of 48 days to sell a house privately, rather than through auction, in Melbourne. That number has remained fairly stable in 2017 and 2018 so far. For units, the average days on market in Melbourne has improved to 75 days down from nearly 100 days last year.

