A Tale of Two Cities — Property Market Metrics: Why the Same Suburb Can Tell Two Different Stories

If you’ve ever searched property prices online, you’ve probably noticed something strange: two respected real estate property platforms can give you completely different figures for the same suburb. One says the median house price is up; the other says it’s down. One says the median is $870,000, another says $840,000. Who’s right?

This article unpacks why Realestate.com.au (REA) and Your Investment Property magazine (YIP) often report very different median house prices and growth trends for the same suburb. We’ll explore the data sources, methodologies, and motivations behind each platform, helping both everyday buyers and sophisticated investors make sense of the numbers.

Here at NP Property Group we use a mixture of public and private information to assess the market including direct from the selling agent, developers and our own data sets built up over 30 years, as well as monitor online platforms for potentially misleading inconsistencies.

The Snapshot: One Suburb, Two Stories

Let’s take Edge Hill, a suburb in Cairns, Queensland, as an example.

• REA (via PropTrack) reports the median house price at $870,000 with a 12-month growth rate of 14.3%, based on 56 house sales.
• YIP (via RP Data/Cotality) gives a median of $840,000, with growth at 15.82%, based on 76 sales in the past 12 months.

That’s a $30,000 difference in the median price and nearly 1.5 percentage points of growth variation — despite covering the same suburb, in the same country, over roughly the same period.

Who Are the Data Providers?

Realestate.com.au is powered by PropTrack, REA’s in-house analytics firm. It focuses on live listings, vendor sentiment, and buyer engagement. Think of PropTrack as the engine behind the consumer-facing graphs and medians you see on REA.

Your Investment Property (YIP) is powered by RP Data, trading as CoreLogic Australia (rebranded globally as Cotality in March 2025). It’s Australia’s leading property data firm, used by banks, property valuers, governments, and large investors.

Methodology Matters

The most important reason these numbers differ is how “median price” is defined and calculated.

REA / PropTrack uses a simple median of recent settled sale prices, often filtered or trimmed. They may exclude unusual or incomplete sales. The result is a cleaner, simpler number for everyday buyers.

YIP / Cotality uses a Hedonic Median Value — based on all settled sales, then adjusted using statistical models (hedonic regression) that control for variables like bedrooms, land size, and quality. This helps investors understand underlying value movement rather than shifts driven by occasional high-end or low-end sales.

What “Hedonic” Means

Instead of just taking the middle sale price (which can be skewed by what types of homes sold), hedonic regression estimates the value of a property based on its features. It avoids compositional bias — for example, if only luxury homes sold one month, the standard median would spike even if prices didn’t actually rise.

Two Audiences, Two Realities

REA is tailored for home buyers and sellers — visual, quick-access price estimates emphasizing current market sentiment. Their medians lean optimistic, particularly in hot markets. That’s not deception; it’s marketing.

YIP is tailored for investors, bankers, and analysts — long-term trend analysis showing true value growth over time. Their medians better reflect how much people actually pay, not what vendors hope to achieve.

Why REA Medians Are Often Higher

Listing influence, sale filtering, smaller sample sizes, and recency weighting all play a role. These aren’t errors — they’re design choices. REA is a portal business that thrives when people are actively selling.

Final Tips for Buyers and Investors

• Always check the sales volume behind the median. A 10-sale sample is less reliable than 100.
• Understand the methodology. Listing price medians are not the same as sale price medians.
• Use both REA and YIP to your advantage: REA shows the mood and momentum; YIP shows the deeper trend reflecting the value underneath.

At NP Property and National Pacific Valuers, we know that every data point tells a story — but not always the whole story. That’s why our team combines deep local experience, on-the-ground intelligence, and independent valuation methodologies to interpret the numbers others simply publish.

Whether you’re buying your first home, selling a family asset, or analysing an entire portfolio, we’ll help you cut through the noise and act with confidence.

Contact us today to discuss how we can support your next move — whether you need a market appraisal, pre-sale strategy, or independent valuation advice that holds up under scrutiny.