What property data can and can't tell investors

Property data can reveal where investors are borrowing, buying and directing capital, but it can’t tell an investor whether a particular property is a good investment.

That distinction becomes more important when market conditions and tax settings change. Historical trends may provide useful context, but they don’t necessarily indicate how investors will respond to changes affecting negative gearing, capital gains tax, interest rates, rental conditions or borrowing capacity.

For investors the broad data is best used as a starting point. The next step is to assess the individual property: its income, expenses, condition, records, tax treatment and depreciation potential.

One result can support different conclusions

Australian Bureau of Statistics figures recorded 57,342 new investor loan commitments in the March quarter of 2026. This was 5.3 per cent lower than the previous quarter but 18.8 per cent higher than a year earlier.

The value of investor lending showed a similar pattern. It fell 3 per cent during the quarter to $41.5 billion but remained 25.3 per cent higher than a year earlier.

Viewed quarter-on-quarter, the figures suggest investor activity eased. Viewed annually, they indicate borrowing remained relatively strong.

Both conclusions can be correct. What the figures don’t explain is why investors borrowed, what they purchased or whether those properties will ultimately perform well.

They also provide limited insight into how investors may change their behaviour as tax settings, interest rates, property prices and rental conditions evolve. It can take time for these influences to become visible in market-wide data.

Market activity is not property performance

Higher lending or transaction volumes can indicate increased investor activity, but popularity should not be confused with investment performance.  

Two properties with similar purchase prices can produce substantially different cash flow once rent and ownership costs are considered. Loan interest, insurance, strata levies, property management fees, maintenance and vacancy can all affect the result.

There are also property-specific factors that broad datasets struggle to capture consistently. Building condition, upcoming capital works, renovation history, the quality of improvements and demand for a particular dwelling can all influence an investor’s costs and returns.

A suburb or property type attracting more investors therefore isn’t automatically a stronger investment. Market activity provides context; the individual property still needs to support the investment case.

Tax changes add another variable

Changes to negative gearing and capital gains tax discount may influence how some investors compare new and established residential property, but tax treatment is only one part of that comparison.

Purchase price, rental yield, location, housing supply, borrowing costs, maintenance requirements and an investor’s individual financial circumstances can have an equal or greater influence on the outcome.

Policy changes may also affect investors differently, depending on the property they purchase and their circumstances. This makes it difficult to use early market data to predict how investors will adjust their buying decisions, borrowing levels or intended ownership periods.

Rather than trying to predict those responses from headline figures, investors can focus on the factors they can assess: the property, its costs, its income potential and the tax treatment relevant to their circumstances.

Headline figures can hide important property detail

Even commonly used measures such as rental yield only tell part of the story.

Gross rental yield, for example, can help compare properties at a high level but generally doesn’t account for ownership costs. Two properties with the same gross yield could produce different cash flow after loan interest, repairs, insurance, vacancy, strata costs and property management fees are considered.

Tax statistics have similar limitations. Average deduction figures can show broad claiming patterns, but they can’t establish what an individual investor is entitled to claim.

Depreciation is a good example. Available deductions can depend on factors including the property’s construction history, purchase date, previous use, ownership and the assets within it.

Capital works deductions generally relate to qualifying construction expenditure, while plant and equipment deductions apply to eligible depreciating assets. Restrictions can also affect deductions for previously used plant and equipment in residential properties.

This means assumptions based on a property’s age or appearance can be misleading. An older or renovated property may still contain eligible depreciation deductions, while renovation expenditure and individual assets may need to be treated differently for tax purposes.

Depreciation depends on property-specific evidence

Determining depreciation therefore requires more than applying an average deduction or making assumptions based on the property’s age.

A tax depreciation schedule uses information about the individual property to calculate eligible deductions. This could include completion of a physical site inspection to identify construction features, renovations and depreciating assets that may affect the calculation.

Available plans, invoices, settlement documents and renovation records can provide further evidence. Where original construction costs are unavailable, a qualified quantity surveyor can estimate eligible construction costs for depreciation purposes.

A tax depreciation schedule then provides the investor and their accountant with a detailed calculation of eligible deductions over the property’s depreciable life.

This property-specific approach can help investors maintain stronger records, identify deductions that may otherwise be overlooked and better understand how depreciation could affect after-tax cash flow.

Market data can help an investor understand what is happening around them. Property-specific evidence helps them understand what is happening with their investment.