How to read PropTrack's monthly Home Price Index without overreacting

Around the first of each month, PropTrack publishes the Home Price Index. It is a free public release covering the nation, the eight capital cities, combined regional, and each rest-of-state regional aggregate, with house-versus-unit splits. PropTrack is owned by REA Group, which gives the series a structural advantage on the listings side of the market, and the REA Group Insights team accompanies each release with commentary in PropTrack Market Insight.

Most readers stop at the headline national figure. The more useful reading is the gap between PropTrack and the CoreLogic Home Value Index, which lands in the same week on the same calendar month. Treated as a pair they cover the leading and lagging edges of the market; treated in isolation either one is half a story.

What the PropTrack HPI actually measures

The HPI is a hedonic monthly index. PropTrack feeds property characteristics (bedrooms, bathrooms, land size, year built, location) and observed market evidence into a regression model that estimates the value of every dwelling in the index universe. The headline change is the modelled month-on-month movement in that universe, with the property mix held constant. A daily index also feeds the methodology, but the monthly summary is the read most analysts cite.

The wrinkle that separates PropTrack from its closest peer is the input data. CoreLogic anchors its model on settled sales drawn from state Land Registry feeds. PropTrack anchors on a blended input: listings data from realestate.com.au (asking prices, listing volumes, time-on-market) combined with recent sales evidence. Because asking prices update before settlements record, PropTrack picks up turning points slightly earlier in fast-moving markets, at the cost of more sensitivity to listing-side mix.

What sits in the monthly release

The standard monthly publication runs through the same sections each release:

1. National headline HPI with month-on-month, rolling three-month, rolling twelve-month, and five-year annualised changes.
2. Capital city table with the same four series for each of the eight capitals.
3. House versus unit split by capital and combined regional.
4. Capital versus regional split, plus the regional rest-of-state aggregates.
5. Auction clearance rate snapshot covering the preliminary and final reads for the major auction markets.
6. Days-on-market estimate as a median number of days from listing to sale.

The release is short enough to read in ten minutes if you know where to look, and the REA Group Insights commentary usually anchors on whichever of those six lines moved most in the print.

How PropTrack and CoreLogic differ in practice

Both series use hedonic methods, both publish monthly, and both arrive at a similar directional read in most months. The differences are at the edges:

• Data weighting. PropTrack leans on realestate.com.au listings flow; CoreLogic leans on settled-sale records. The gap between the two on a capital-city monthly change is typically a few tenths of a percentage point in normal markets.
• Cadence of revision. CoreLogic publishes a daily HVI alongside the monthly summary, with frequent minor revisions as Land Registry data flows in. PropTrack also runs a daily series, but the monthly summary is the canonical read.
• Where they tend to diverge most. Regional markets with smaller sample sizes, the high-end stratum where individual sales move the mix, and post-listing-boom periods where listings data updates faster than sales settle. In those windows the two series can sit 0.3-0.4 percentage points apart on a single month before reconverging the next quarter.

What each one is sharper at

Because PropTrack carries the largest live listings dataset in the country through REA Group, it is the cleaner read on the leading edge of the market: listed-property mix, new-listing volumes, asking-price changes, time-on-market. Those series turn before settled sales do. CoreLogic, with the deeper Land Registry feed, is the cleaner read on the lagging edge: validated sale prices, completed transaction counts, daily-resolution settlement flow, and broader regional coverage where listing volumes thin out.

The practical rule is to use PropTrack for where the market is heading and CoreLogic for where it has actually settled. When the two converge in a release week the read is consensus; when they diverge by more than half a percentage point the market is changing direction faster than one of the methods can absorb. Read alongside the CoreLogic Monthly Housing Chart Pack explainer and the CoreLogic HVI explainer, the divergence is usually the most interesting line in the release.

Reading the auction clearance line

PropTrack reports two clearance figures in the monthly release: the preliminary rate, gathered on Saturday and Sunday after the weekend's auctions, and the final rate, revised through the following Tuesday or Wednesday as outstanding results come in. The preliminary number is the one that lands in the news cycle on Sunday morning; the final number is the one to actually use.

Preliminary rates routinely drop five to ten percentage points when revised, because unreported results skew toward passed-in and withdrawn properties. Anyone drawing a market conclusion from a Sunday-morning headline clearance rate is reading a number that has not finished settling. The final rate, three days later, is the one the REA Group Insights team uses in commentary.

Reading the days-on-market line

Median days-on-market is the underrated line in the release. It moves before headline prices do. A capital printing days-on-market falling from the mid-thirties to the high-twenties over a single quarter, alongside vendor discounts compressing, is telling you the market is tightening faster than the headline monthly price change implies. The reverse pattern, days-on-market rising with vendor discounts widening, is a cooling signal that usually shows up in price prints a month or two later.

A worked example

Suppose a capital city prints a PropTrack monthly change of around 0.4%, a rolling three-month near 1.0% (annualised approximately 4.0%), and a rolling twelve-month near 5.5%. The three-month annualised sitting a touch below the twelve-month tells you trend is stable rather than accelerating. Days-on-market reads 28, down from 35 three months earlier. Final auction clearance prints 65%, up from 58% over the same window.

Three series, same direction, consensus uptrend. Now cross-check against the CoreLogic HVI for the same month. If CoreLogic prints +0.5% on the same capital, the two series agree and the read is firm. If CoreLogic prints +0.1%, the gap is interesting: PropTrack's listings signal is running ahead of CoreLogic's settled sales, and the next month's CoreLogic print will either catch up or PropTrack will pull back. Either way, the information sits in the divergence, not in the headline.

What to ignore

Single-month surprises in isolation. The monthly print is noisy enough that a single 0.2-percentage-point move can reflect listings mix rather than market direction. Always check the rolling three-month before drawing a conclusion.

Preliminary auction clearance rates quoted as if they were final. The Sunday-morning headline is provisional; Wednesday's revised figure is the one to use, and the gap between them is typically five to ten percentage points to the downside.

Headline twelve-month figures stripped of the three-month context. The annual line includes a stale tail that can obscure whether the market is currently accelerating, flat, or rolling over.

How to pair the HPI with other releases

The HPI is the demand-side read. It needs context from the supply, lending, and rental sides to land:

• The SQM Research vacancy explainer sets the rental-tightness backdrop. Rising prices on falling vacancy is a structural read; rising prices on stable vacancy is a credit read.
• The ABS Lending Indicators explainer covers the new-commitments series that leads HPI changes by roughly one to three months.
• The RBA Statement on Monetary Policy explainer gives the macro context that ultimately drives most synchronised capital-city moves in either series.

For property-level numbers, the index is a tide indicator, not a valuation. The mortgage repayment calculator is the right place to run a specific purchase price and loan size through current rates rather than reading capital-city averages onto your own deal.

How to actually use it

Read the PropTrack HPI release on the morning it lands. Note the headline national change, the capital-city table, the house-versus-unit gap, and the rolling three-month for each capital you care about. Note final auction clearance and the days-on-market trajectory. Write your own read down before you open the commentary.

Then read the CoreLogic monthly summary in the same week and compare. Convergence between the two confirms the trend; divergence flags a market in transition. On Burbfinder, the direction signals from both releases sit next to local medians, rents, and approvals on every suburb and region page, so the monthly print becomes a national sanity check on a view you already have rather than a verdict from a release you read once a month.