REA Group’s dominance in the property listings market has drawn the focus of competition regulators after the $24 billion giant scooped up a small firm that manages critical forms about almost every real estate transaction in Australia outside Victoria.

ASX-listed REA, which is 61 per cent owned by News Corp and accounts for more than 60 per cent of its global market capitalisation, extended its lead over second-placed Domain in its most recent results, reporting stronger revenue growth and more property listings on its platform.