I would support long term rental housing like Europe has, but private landlords won’t provide it. Rental returns alone are too low, cut their ability to later achieve decent market price and you’ll kill it. And sorry but there are tenants who cannot be evicted as are not THAT bad but who’s lack of care costs too much in maintenance so landlords must have right to not offer new lease.
Social housing needs to be established, dunno how after so many years of neglect.
Other forms of new housing must be encouraged. Like the housing cooperatives in Waitakare and opening in Dunedin.