Investors often start with yield. It is a quick way to compare properties and see how much income an asset earns relative to its price. But yield and value are different things, and mixing them up is a common source of mistakes. This guide explains how rental yield is calculated, how it relates to a valuation and what to prepare if you are having an investment property valued.
Gross Rental Yield
Gross yield is annual rent divided by the property's value, expressed as a percentage, with no deductions for costs. Westpac's guide gives a clear example: rent of $450 a week over 52 weeks is $23,400 a year. Divided by a value of $600,000, that is a gross yield of about 3.9 per cent.
Net Rental Yield
Net yield deducts the ongoing costs of holding the property before dividing. The formula is (annual rent − annual expenses) ÷ property value × 100. Using the same example, if running costs such as council rates, insurance, property management and maintenance come to $4,920 a year, the net income is $18,480 and the net yield falls to about 3.1 per cent.
The gap between gross and net depends on the property. Mozo's guide suggests net yield is typically around 1 to 1.5 percentage points below gross for houses and 1.5 to 2.5 points below for strata units, because of body corporate fees. Other sources give slightly different ranges, so use your own actual costs.
Yield Is Not the Same as Value
Yield is a ratio, so it moves whenever either number changes. A property with a high yield may be priced low because buyers see risks such as weak location, short leases, poor condition or limited growth prospects. A low yield may reflect strong demand and expected capital growth. Several guides make the same point: yield measures income, not capital growth or risk, so it should be considered alongside both.
A valuer assessing a residential investment property will usually set the value from comparable sales of similar properties, because that is how buyers price them. Rental evidence is then a useful cross-check: if the implied yield is far from what similar properties achieve, the valuer will want to understand why.
Market Rent Versus Actual Rent
The rent you collect today may differ from what the property would rent for on the open market. A long-term tenant on an old lease may pay less than market, while a short-term arrangement may be priced above it. Valuers consider market rent, meaning what the property could reasonably achieve if let now, and note where the actual rent differs.
Be careful with benchmarks drawn from listings. Published yield figures often use asking rents and advertised prices, which can differ from achieved rents and sale prices. Ask for achieved rent evidence in your area where you can.
What Else Shapes an Investment Property's Value
- Location and amenity. Transport, schools, employment and services drive both rent and demand.
- Property type. Houses, townhouses and units attract different tenants and holding costs.
- Condition and presentation. Well-maintained properties let faster and for more.
- Vacancy. Local vacancy rates affect how reliably rent can be collected.
- Strata and holding costs. High body corporate levies reduce net income.
Preparing Your Rental for a Valuation
- Provide the current lease and a rent statement or ledger.
- Share maintenance records and receipts for major repairs.
- Arrange tenant access with proper notice.
- List recent upgrades that could support higher rent.
- Provide strata levies or rates notices so costs are clear.
When Investors Order Valuations
Investors commonly obtain valuations to refinance, review a portfolio, plan a sale, work out insurance levels or support tax calculations. If you hold property that may be affected by the capital gains reform from 1 July 2027, see our CGT valuation guide.
For help with an investment property, view our services or speak to our valuers.
