Mr English yesterday acknowledged Mr Alexander's comments but noted recent reports on the Australian housing market showing a sharp drop in first-home-buyer participation.
Australian media last week reported first-home buyers accounted for just 6.8 per cent of new housing loan commitments in New South Wales in September, well down on the peak of 34 per cent four years ago.
Across Australia, first-home buyers accounted for 12.5 per cent of new housing loans during the month.
"That's in a market that's got a capital gains tax, a restriction on foreign buyers and it doesn't have any LVRs," Mr English said in a comment aimed at parts of the Opposition's answer to rising house prices.
"So the experience there is remarkably similar at a remarkably similar time. I don't quite understand why, but what it tells you is that the real problem for first-home buyers is the affordability of the housing, not the LVR restrictions although they have some impact in the short term, no doubt about that.
"Yes, there is some pressure on first home-buyers from the LVRs but I think the Australian figures show that underlying that is the problem of just housing markets that are very expensive."