Hon Dr MEGAN WOODS: One way in which we will test it is by continually increasing the number of public houses we have. As I have indicated to the member, we are building the most public houses that have been built in a generation, and we'll have built 18,000 of those houses by 2024. That is where people will be paying 25 percent of their income on an Income Related Rent Subsidy. More broadly, we will know that we have been successful when all New Zealanders live in a warm, dry, affordable home, whether they are renting or owning. 