The Government or a new independent agency could determine what a reasonable rent increase will be in different parts of Aotearoa each year. They could look at things like general inflation and the cost of living, average wage growth, and borrowing costs. Landlords would not be allowed to raise rents more than this annual limit.
Different limits could be applied in different parts of Aotearoa, or rent increases could only be limited in areas where rents are rising rapidly or already unaffordable.
A larger rent increase could be allowed if the landlord can show that the property has undergone substantial improvements, not just regular maintenance and upkeep.