House prices have suffered their biggest falls in a string of Liberal-held seats across Melbourne with parts of Treasurer Josh Frydenberg's electorate suffering drops of almost 20 per cent over the past year amid concerns they will continue to tumble.

An analysis by The Age of house prices by electorate - derived from CoreLogic data - shows the seven worst performing seats in Melbourne are all held by the Liberal Party which is facing a battle to retain the seats at the coming May election.

Melbourne house prices climbed 70 per cent between 2011 and 2017. Over the past year, they have fallen by 11.5 per cent with the CoreLogic data showing some parts of the city doing far worse.

In Kooyong, where Mr Frydenberg is facing a concerted campaign from independents and the Greens, house prices have dropped by 13.7 per cent. The suburb of Balwyn North, which recorded a 95 per cent lift in prices between 2012 and 2017, has suffered the city's second largest drop with prices down by 17.5 per cent.

Other parts of Mr Frydenberg's blue-ribbon seat to suffer large price falls include Kew (by 16.1 per cent), Hawthorn (14.1 per cent) and Camberwell (15.8 per cent).