Domain and REA Group Both File Legal Claims Over Rivals' Marketing Brags

July 2, 2026

Australia's two biggest portals have entered a legal dispute over their respective marketing claims.

Domain has filed a claim against REA Group to the Federal Court, alleging misleading advertising, namely that realestate.com.au finds buyers for nine out of 10 properties listed on its flagship portal, realestate.com.au.

Earlier this year, REA Group released findings from its Buyer Impact Model, built on proprietary data, that "realestate.com.au attracts and engages the buyer on 9 in 10 properties listed on the platform that go on to sell. "Realestate.com.au helps 9 in 10 buyers find the One."

The company detailed how its AI-powered model, powered by PropTrack, analyses billions of consumer interactions with listings and property pages on realestate.com.au and property.com.au. This data is overlaid with national property sales data to confirm which properties have sold. REA Group excluded around 20% of properties that sold without appearing on a major property portal, and viewing activity on third-party marketplaces and platforms, including Domain. REA added that the findings were independently validated by Deloitte.

At the time, Chief Commercial and Marketing Officer, Kul Singh, added: “For the first time, agents have measurable evidence to demonstrate to vendors that the sale of their home can be directly linked back to the impact of their realestate.com.au advertising campaign."

But rival portal operator Domain alleges "market dominance representation" that is "misleading or deceptive or likely to mislead or deceive”—and if REA's claims are true, then Domain must only be capable of providing up to one in ten sales in Australia.

Domain argues that it is “likely to suffer loss from a diminution in business” should REA continue to share these claims. The CoStar Group-owned portal demanded corrective advertising messages requiring REA Group to publicly withdraw its previous claims.

REA defended itself and shot back with its own counterclaim, suggesting that Domain has misled the market about the success of its own platform.

A spokesperson said:

"We help nine-in-10 buyers find the one across homes listed and sold on realestate.com.au. The claims are based on analysis of 1 million sales over 28 months, including sales of over two hundred thousand properties claimed and tracked by owners, and over 10 billion consumer data points.”

"[Meanwhile] Domain has represented that listings with its Matterport Suite product will receive 5.5 times more listing views and 4.2 times more buyer enquiries than comparable listings without Matterport Suite.

“These claims are based on a tiny sample of listings that were given disproportionate national exposure across the Domain homepage earlier this year.”

July 2, 2026
Harvey is an accidental real estate journalist and professional copywriter. He has written about the property industry since 2015, starting at The Property Franchise Group in the UK, before moving to Spain to work for Spotahome. He has worked as a freelance copywriter since 2021, with a special focus on startups real estate. Harvey joined Online Marketplaces as a News Editor in 2022, writing over 2000 news stories and interviewing dozens of high profile industry leaders both in-person and as a co-host of the PPW Podcast.

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