Comparing suburbs for property investment is one of the most important and most poorly done parts of the property research process. Most investors compare median prices and stop there. The investors who build wealth compare the right metrics — yield, vacancy, growth drivers, infrastructure, demographics, and supply constraints. Here is how to do it properly.
The 7 Metrics That Actually Matter
- Gross rental yield — annual rent divided by purchase price. Anything above 4% in Melbourne inner suburbs is strong. Above 5.5% is excellent nationally.
- Vacancy rate — SQM Research tracks this by suburb. Below 2% means strong rental demand. Above 3% means oversupply risk.
- 10-year median price growth — not recent spikes but sustained compounding. Inner Melbourne suburbs have averaged 6-9% per annum over 20 years.
- Population growth and demographic shift — young professional in-migration drives both rent and price growth.
- Infrastructure investment — train stations, schools, hospitals and retail precincts drive 8-15% price premiums within 400m of completion.
- Supply constraints — heritage overlays, green wedge zones and established streetscapes limit new supply and protect price growth.
- Days on market — how quickly properties sell. Under 30 days signals strong demand. Over 60 days signals softness.
Suburb Comparison Framework
| Metric | What to Look For | Where to Find It |
|---|---|---|
| Gross yield | Above 4% (Melbourne), 5%+ (regional) | Domain, REA, GeeVee |
| Vacancy rate | Below 2% | SQM Research |
| 10yr growth | Above 6% per annum | CoreLogic, Domain |
| Infrastructure | Confirmed projects, not proposals | Council, state government |
| Days on market | Under 30 days | REA, Domain data |
How a Collings Property Advisor Helps
A Collings Property Advisor runs a full GeeVee investment score comparison across your shortlisted suburbs — scoring each against 40 data points including yield, growth, vacancy, infrastructure, demographics and supply constraints. Fixed fee $4,500 + GST.
Frequently Asked Questions
Is median price a reliable comparison metric?
Median price tells you what the market is, not where it is going. Use it as a starting point — then layer in yield, vacancy, growth history and infrastructure to understand the investment case.
How many suburbs should I compare before buying?
Most experienced investors shortlist 3 to 5 suburbs and do deep analysis on each before selecting one. A Collings Property Advisor can do this analysis for you as part of your advisory engagement.
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. 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.
