Vacancy rates increased a little in Canberra and Darwin in December, according to SQM Research.
Vacancies were steady in the three largest capital cities.
Nationally the vacancy rate of 1.6 per cent (57,558 vacancies) was well below the 2.2 per cent (76,665 vacancies) seen a year earlier.
Vacancy rates fell again in Sydney CBD, and in Melbourne CBD to 5.7 per cent.
Rents increased 0.8 per cent for houses in the month, and by 1.2 percent for units in the month.