Professor Michelle Norris:

In terms of doubling the supply of social and cost-rental housing, depending on whether we deliver them over 20 or ten years, it would require 8,000 to 10,000 units per year over 20 years and twice that over ten years. It is a substantial and ambitious programme. We felt this would have the potential to take significant numbers of households out of the private rental market. There are about 55,000 HAP recipients at the moment.