You've built a solid career, you're earning well and you're ready to put your money to work. Buying an investment property could be your next step.
But before you start inspecting homes or calling agents, there's some background knowledge you should learn. Not the jargon-heavy kind that fills weekend seminars, but a working understanding of the numbers that actually determine whether an investment stacks up.
Here are the metrics that matter, explained plainly, with current Melbourne data to show you what they look like in practice.
Median value
This is the middle point of all property sale prices in a given market. Half of sales happen above it, half below. It's a more reliable indicator than the average, which can be skewed by a handful of exceptional sales at either end.
In Melbourne as of January 2026, the median dwelling value sits at $830,371, according to Cotality.
Break that down by property type and you get $989,356 for houses and $639,145 for units. That gap between dwelling types matters when you're deciding where to allocate capital and what your entry costs look like.
Median value on its own doesn't tell you much, other than roughly how much you can expect to spend right now. It becomes useful when you track it over time.
Capital growth
Capital growth is the rate at which a property's value increases over time. It's expressed as a percentage change – monthly, quarterly, annually – and it's one of the primary ways property investors build wealth.
Melbourne's annual capital growth (that means in the 12 months since January 2025) currently sits at 6.5% for houses and 2.7% for units. Over a month and a quarter, both are running at 0.2% – a sign of steady, measured momentum rather than the kind of heat that tends to correct sharply.
When assessing capital growth, look beyond both short-term (monthly) and long-term (annual and more). A suburb's proximity to infrastructure, employment hubs and quality schools tends to drive sustained long-term growth. Historical consistency matters more than a single strong year.
Rental yield
There are two common types of rental yield:
1. Gross yield tells you how much rental income a property generates relative to its value, before expenses. The formula is straightforward:
(Annual rental income ÷ Property value) × 100
In Melbourne, gross yield is currently 3.1% for houses and 4.8% for units. Units often yield more because they're cheaper to buy relative to the rent they attract, which is why investors on tighter budgets often favour them.
Gross rental yield is the most commonly reported, so it will be easy to find the typical gross rental yield for a suburb you are interested in.
But gross rental yield also doesn’t tell the whole story. Management fees, maintenance, insurance, rates, periods of vacancy and mortgage repayments can all erode returns significantly. That's why serious investors work with net yield, not gross.
2. Net yield accounts for all of the costs associated with owning and managing the property. It gives you an accurate picture of what an investment actually returns.
The calculation: (Annual rent – Annual expenses) ÷ Property value × 100
A property’s expenses will be specific to that particular dwelling. For instance, your property management fees may be higher or lower than your neighbour’s. Given this, it is difficult to calculate net rental yield broadly for a suburb or city.
Rental growth
Annual rental growth tells you how quickly rents in a given market are rising. It matters for two reasons: it affects your ongoing income and it signals underlying demand for housing.
In Melbourne, rents on houses rose 3.1% over the past year and units rose 4.1%. Unit rents outpacing houses reflect strong demand from renters who may have been priced out of the detached market. This is a growing trend, given Melbourne's population trajectory.
Strong rental growth in a suburb is can be a sign of capital growth to follow. Supply constraints and rising demand push rents up first, then values.
Vacancy rate
The vacancy rate measures the percentage of rental properties in a market that are currently unoccupied. It's one of the clearest indicators of rental demand – and by extension, of how reliably your investment is likely to generate income.
A vacancy rate below 3% is generally considered a landlord's market. Below 2%, competition for rentals is intense and tenants have little negotiating power on price.
In Melbourne, the vacancy rate for houses has moved from 2.3% in January 2025 to 2.0% in January 2026, indicating fewer homes available for rent a nd higher competition among tenants. Units tell the same story. Vacancy has tightened from 1.5% in January 2025 to 1.3% in January 2026.
Falling vacancy and rising rents point to a market where well-located stock is being absorbed quickly. That's the kind of environment where a quality investment holds tenants and holds value.
Loan-to-value ratio (LVR)
LVR is the size of your loan expressed as a percentage of the property's value. A $700,000 loan on a $1,000,000 property gives you an LVR of 70%.
Lenders use LVR to assess risk. Most prefer to see LVR at or below 80%. Anything above that typically requires you to pay lender’s mortgage insurance (LMI) for an investment purchase, which can add thousands to your costs. Your LVR may also affect the interest rate you're offered and the range of products available to you.
For investors building a portfolio, managing LVR across multiple properties is one of the more challenging parts of the equation. Getting equity release right – that means using growth in one property to fund the deposit on the next – requires careful structuring.
Debt serviceability
This is the metric your AXTON Finance broker and your lender will probably look at most closely. Debt serviceability measures your ability to meet loan repayments relative to your income, after living expenses and existing commitments.
Lenders apply their own serviceability buffers, mandated by the Australian Prudential Regulation Authority. This is currently three percentage points above the loan's actual interest rate. This is done to stress-test your ability to repay if rates rise.
For investors with multiple properties or other significant financial commitments, serviceability can become the constraint that limits how quickly you can grow a portfolio.
It’s important to understand your serviceability position before you start looking at properties, as this can save time and prevent the frustration of falling in love with an asset your lender won't fund.
Know your numbers before you move
The investors who build lasting wealth through property aren't necessarily the ones who move fastest. They're the ones who understand what they're looking at before they commit.
If you're ready to explore what Melbourne's current market looks like for your specific financial position, AXTON Finance can help you run the numbers. We work with investors across Melbourne who want clear, considered advice.
Are you ready to make your next property move with the right finance behind you? Call 03 9939 7576, email getabetterrate@axtonfinance.com.au or contact us today.