As has also been seen in rapidly tightening Melbourne, the trend in middle ring reported vacancies in Sydney has been getting tighter and tighter.
Rental vacancy rates are tracking at just 1.4 per cent for the middle ring.
That figure for the middle ring has now formed a multi-year downtrend, despite record apartment completions.
As a result, apartment rents have been rising sharply in both cities.
The rental vacancy rate across Sydney was flat at just 1.8 per cent.
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