Speaking with Fairfax Media after the digital real estate company reported a 20 per cent surge in revenue over the third quarter, Ms Fellows said REA, which is majority-owned by News Corporation, was open to further acquisitions as well as organic growth internationally.

"We're always very open if there's opportunities for acquisitions but we look at it within a lens of what will that add to our base, does meet our internal threshold in terms of rate of returns, so we're pretty rigorous in how we look at those," Ms Fellows said.

"Whenever we look at how we're expanding and growing we look at the opportunity to build, and is this a logical extension of what we do and consistent with some of the skills and capabilities that we have, but we also look at trade off of buy versus build."

In the three months ended March 31, REA said its revenue surged to $147 million from $123 million in the year-earlier period. The results were reported as part of News Corp's third quarter results, reported on Friday morning.

For the nine months ended March 31, REA said its revenue rose a similar 20 per cent to $461 million from $384 million in the year-earlier period.

In November, REA said it would fully acquire rich lister Patrick Grove's iProperty Group. REA previous held a 22.7 per cent stake in the Australian-listed, south-east Asia online property portal, but bought the remainder at $4 per share. The purchase was completed earlier this year.

Ms Fellows said the iProperty business presented a significant opportunity in markets less mature than Australia.

"A big portion of their business is developer projects. I think in most countries it equates to somewhere in the order of 70 per cent of properties for sale are new developments," Ms Fellows said.

"It will take some time before it is as large as the Australian business. As excited as we are, it won't happen in a very immediate sense.

"We're here to build a business for the medium and long-term and will make a positive contribution even in the short-term," she said.