If you've spent any time around property investors, you've heard the term "vacancy rate" thrown around like it settles something. "The vacancy rate in that suburb is 1.2%, so you're fine." Everyone nods. And if you're new to this, you might be quietly thinking: I have no idea whether 1.2% is good or bad, or what it actually measures.
What it actually measures
At its simplest: the vacancy rate is the percentage of rental properties in a given area that are sitting empty and available for rent right now. If a suburb has 1,000 rental properties and 30 of them are vacant, the vacancy rate is 3%. That's it — a snapshot of rental supply at a single point in time. It tells you how much competition there is among landlords for tenants: a low rate means landlords have the upper hand and rents tend to rise; a high rate means tenants can be picky and landlords may need to drop the rent or offer incentives.
What's healthy?
But these are guideposts, not rules. A mining town with a 5% vacancy rate might be completely normal for that market; a beachside suburb that sits empty half the year might look worse on paper than it actually is.
Three things people miss
First, vacancy rates vary within suburbs — one end of a postcode can be tight while the other is soft. Second, a very low rate isn't always good: if it's near zero, that usually means something structural — hardly any rental stock exists there, or most homes are owner-occupied — which doesn't automatically make it a great investment location. Third, even if you're buying a home to live in, vacancy still matters: low vacancy means the area is in demand, which tends to support property values over time.
The catch
Vacancy rates are a rear-view mirror — they tell you what's happening now, not what will happen.
A new apartment building completing next year could flood a previously tight market with supply. A major employer moving into the area could absorb excess stock overnight. The number alone isn't enough — you need to understand what's driving it, and what's in the pipeline.
This article is general property market information only — it isn't financial, tax, legal or investment advice. Your specific situation should always be discussed with a qualified, licensed professional (financial adviser, mortgage broker, tax agent or solicitor) before you make any decisions. FiveFold Property Partners helps clients buy property; we are not licensed financial advisers.