The chief executive of the country’s largest property company, Lendlease’s Tony Lombardo, says the government should significantly increase the share of immigrants who are construction workers if it is serious about building more than a million homes over the next five years, as business leaders urged a series of productivity reforms to boost supply.

Mr Lombardo made those comments at a special roundtable hosted by the Business Council of Australia and The Australian Financial Review, which focused on the roadblocks preventing more supply of affordable houses.