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How to Use Property Data to Make Better Investment Decisions in Australia

June 24, 2026

The difference between a good property investor and a great one is almost always data. Investors who rely on gut feel, suburb reputation and agent recommendations consistently underperform those who use a structured data framework to identify, assess and time their purchases.

What Are the Most Important Data Points for Property Investment?

Data Point What It Tells You Source
Median sale price (12-month) Current price level and recent trend CoreLogic, Domain, REIV
Gross rental yield Income return as a percentage of purchase price SQM Research, CoreLogic
Vacancy rate Proportion of rental properties empty — below 2% is tight, above 3% is oversupplied SQM Research
Days on market How long properties take to sell — falling = strengthening market CoreLogic, REA
Auction clearance rate Percentage of auctions that result in a sale — above 70% is a seller’s market REIV, Domain
Vendor discounting rate Average gap between asking price and sale price — falling = less negotiating room CoreLogic
Population growth Long-term demand driver — higher growth = more buyers and renters over time ABS Census
Infrastructure pipeline New train stations, schools, hospitals drive long-term capital growth State government, Infrastructure Australia

How Do I Combine These Data Points Into an Investment Decision?

The most robust investment framework combines at least 5 of these data points into a composite score. A suburb with a rising median price, vacancy rate below 2%, clearance rate above 65%, days on market falling and a major infrastructure project within 2 kilometres scores highly across all dimensions — these are the suburbs that consistently outperform over a 7 to 10 year hold period.

What Is the GeeVee Investment Score?

GeeVee aggregates all of the above data points plus ABS demographics, SEIFA socioeconomic index, school quality scores, walkability, public transport access and distance to CBD into a single 0 to 100 investment score for every suburb in Australia. The score updates monthly and gives investors an instant ranking of which suburbs are the strongest buy opportunities at any point in time.

Frequently Asked Questions

Where can I access free property data in Australia?
Domain and realestate.com.au publish median prices and recent sales. SQM Research publishes vacancy rates. The ABS publishes demographics. GeeVee aggregates all of these into one dashboard for Collings portal members.
How do I know if a suburb’s data is reliable?
Use data from multiple sources and look for consistency. If median prices, yields and vacancy rates all point in the same direction, the signal is reliable. If they conflict, dig deeper before committing.
Can data predict property price growth?
Data cannot predict the future, but it dramatically improves the probability of a good outcome. Suburbs that score highly on a multi-factor investment model have historically outperformed low-scoring suburbs over 7 to 10 year periods.

Whether you’re buying your first investment property, building a portfolio, or exploring SMSF property investment, the Collings Property Platform gives you access to off-market opportunities, portfolio tracking, investment tools, and property insights powered by GeeVee AI. Join free today and start building your property future. collings.com.au/portal

Find your next property with Collings

Track suburbs, get matched to on-market and off-market listings, and manage your whole property search in one place. Access the Collings property portal.

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