One of the items raised was National’s proposal to restore mortgage interest deductibility for landlords. Her policy will encourage more scarce New Zealand investment capital to be locked into residential property. The New Zealand economy can’t grow through some residents being able to sell a pricey residential property to each other. New Zealanders became obsessed with residential property because;its something they understand, (e.g. However, they have stuffed it up by returning interest deductibility to the ‘build to rent’ rent for life business model.