REA Group grew from realestate.com.au, Australia's largest property website with 4.4 million unique browsers each month.

[6] REA bought 20% of US company Move, inc. in 2014,[9] which runs the United States real estate listings website Realtor.com.

[19] The company announced on 11 September, 2007, that it had made its first acquisition in Asia, with the purchase of Hong Kong's largest English-language property magazine, SquareFoot.

[6] Daniel Aragao, former lead architect at REA Group said of the collaboration in 2020, "The ThoughtWorks Technology Radar[21] allows us to compare our expectations with someone who's a thought leader in the industry and has an unbiased opinion.

[24] In May 2021, REA Group merged their Southeast Asian assets with PropertyGuru, after years of battling with rivals for market dominance.

The property sites concerned are situated in Malaysia and Thailand and will be transferred in exchange for an 18% stake in the company and a seat on the board.

Investments include supporting Launch Housing's social enterprise HomeGround Real Estate, to providing skilled volunteers, to building Ikea furniture for families in need via the REA employee induction program.