July 27, 2026

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The Intersection of Information and Insight

Which indicators are most important to property investors

7 min read

Key takeaways

There’s an endless stream of news articles discussing the economic factors that influence property prices, but it astounds me how often property price growth predictions miss the mark.

Keep in mind that most buyers and sellers may not be rational, and their purchasing decisions are influenced by many factors, most of which are non-financial. This is why many economic analyses and forecasts of property prices fall short.

Interstate migration is more variable than overseas immigration. Between 2008 and 2018, Queensland’s net interstate migration averaged 3,000 people per quarter, which was 50% below the long-term trend.

In Australia, about 75% to 80% of properties are bought with a mortgage. However, banks are using a benchmark interest rate of 3% above actual rates to calculate borrowing capacity, meaning lower- to middle-income earners are often locked out of borrowing to invest in property.

The restricted borrowing capacity of investors and homebuyers has contributed to property price growth in cities like Perth, Adelaide, and Brisbane. I don’t believe that an increase in housing supply will significantly impact investors, as we have a poor track record of building infrastructure efficiently and on time.

The supply of apartments in capital cities can affect price growth. Increased density in inner-city areas that already have the required infrastructure could influence property price growth, and local knowledge and research are necessary to assess the likelihood of this risk.


There’s an endless stream of news articles discussing the economic factors that influence property prices: interest rates, unemployment, the supply of new homes, rezoning, and population growth – just to name a few.

Having followed the property market closely for more than two decades, I have two observations to share.

First, I’d love to have a dollar for every forecast claiming that Australia isn’t building enough houses; this conclusion keeps resurfacing annually, often backed by analyses funded by the property industry.

Second, it astounds me how often property price growth predictions miss the mark.

I recently interviewed David Bassanese, the chief economist at Betashares, on this topic and thought it would be useful to share my insights here.

Property Data

Keep in mind that most buyers and sellers may not be rational

When forecasting property price movements, it’s important to remember that two-thirds of property buyers are owner-occupiers.

Their purchasing decisions are influenced by many factors, most of which are non-financial.

For example, a buyer might not mind slightly overpaying for a home if they plan to live there for decades and benefit from lifestyle advantages like proximity to family, work, and schools.

In contrast, when we buy stocks, we carefully consider whether the price makes sense in terms of future investment returns.

Stocks are traded thousands of times a day, allowing for a price-discovery mechanism that accurately reflects their intrinsic or technical value.

This makes it easier to predict investor behaviour, as their decisions are typically based on logical financial data.

This is where many economic analyses and forecasts of property prices fall short – they often neglect the impact of behavioural finance.

Take the analysis surrounding the “fixed rate cliff”, which received significant attention in early 2023.

Many commentators predicted a rise in mortgage defaults and arrears.

However, they overlooked that homeowners would go to great lengths to avoid selling their homes.

If unemployment remains low, a rise in interest rates and repayments is unlikely to trigger forced sales – but certainly a decline in consumer spending.

Additionally, banks apply a 3% buffer when assessing loan applications, and credit conditions are relatively tight, so borrowers must jump through a lot of loops to get a loan approved.

That’s why I wrote in early 2023 that the “fixed rate cliff” would likely be a non-event.

The key takeaway is that you can’t rely solely on data; understanding property owners’ psychology and lending conditions is just as important.

What factors are important to consider?

I discuss the indicators that I think are most useful to long-term property investors.

Interstate migration is more variable than overseas immigration

The long-term trend with interstate migration is that NSW loses about 5,000 people per quarter, Victoria loses around 1,000, and Queensland gains roughly 6,000 people.

This is depicted in the chart below.

Net Interstate Migration June 1981 March 2024

It’s important to note that between 2008 and 2018 (the black rectangle), Queensland’s net interstate migration averaged 3,000 people per quarter, which is 50% below the long-term trend.

During this period, the median house price rose by only 2.3% p.a., roughly in line with inflation.

Since 2018, both interstate migration and property prices have increased.

Although Perth isn’t shown on the chart, it’s important to highlight that interstate migration was negative from 2013 to the end of 2020.

However, it has turned significantly positive since early 2021, leading to robust property price growth over the past 18 months.

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Note: A recent trend worth mentioning is that Victoria experienced significant negative net migration during COVID-19, with many people moving to Queensland. However, that trend has now reversed, and Victoria is seeing positive net migration, currently sitting 1,500 people above the long-term trend. While this isn’t a huge number, it indicates that things are moving in the right direction for Victoria.

When it comes to overseas migration, the distribution among states tends to be relatively consistent: 34% go to New South Wales, 31% to Victoria, and 15% to Queensland.

In my view, interstate migration serves as a good proxy for property market sentiment – essentially reflecting how homeowners feel about a particular state.

How much money is flowing into property

In Australia, about 75% to 80% of properties are bought with a mortgage, making access to credit an important driver of housing demand and price growth.

Interest rate settings can impact demand for property.

When rates are lower, borrowing capacity increases and it makes property ownership more affordable.

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