Fast-growing councils, including Auckland, will be required to free up land for housing under a policy signed off by the Government today.
Environment Minister Nick Smith said ministers had approved a National Policy Statement (NPS) on urban development, which is designed to ensure local authorities are providing for enough housing supply to match population growth.
Smith said the "root cause" of housing affordability was insufficient land supply, which had driven up section prices by 350 per cent in Auckland since 1990.
"The National Policy Statement ... requires councils to allow for a greater supply of houses, so prices rise more slowly and houses are more affordable," he said.
Councils will have to closely monitor indicators such as housing affordability, prices, rents, and consents relative to population growth on a quarterly basis to ensure their zoning decisions are appropriate.