John, the cynic in me suggests that pensioners who have paid of their mortgages and are living in houses that exceed their basic physical needs, should be squeezed out of them by a variety of means, in order to free up housing for families....Perhaps a window tax or somesuch...? After all heating those oversized houses is just plain wasteful. Of course pension reductions seem to have potential to add to the downsizing pressures..and apparently any such measures applied may reduce the housing shortage by also encouraging those soon to retire to think of downsizing before they are left to depend upon pensions...?