New Zealand is a predominantly urban country. Around 84 percent of the population lives in an urban area — a city, town, or suburb. Auckland alone is home to roughly one in three New Zealanders. Wellington and Christchurch between them hold most of the rest of the major urban population.
Where people live, how cities grow, and how housing is built are not just planning questions. They are economic questions — about productivity, land costs, and infrastructure investment. They are social questions — about who can afford to live where, how communities form, and whether people are included or excluded. And they are environmental questions — about how cities expand, what land is used for, and how growth affects natural resources.
New Zealand is in the middle of the most significant reshaping of its planning system in a generation. Understanding what that change involves — and why the old system was seen as the problem — requires understanding how cities grow and why housing has become unaffordable.
How Cities Grow
Cities grow in two directions. They grow up — through taller buildings, apartments, and denser development on existing urban land. And they grow out — extending their footprint into surrounding land that was previously rural or undeveloped.
Both directions have costs and trade-offs.
Growing up — intensification — can be more efficient. It puts more people close to existing infrastructure, transport, jobs, and services. It tends to reduce commuting distances and transport emissions. But it changes the character of existing neighbourhoods, and can face resistance from established residents who prefer low-density surroundings.
Growing out — sprawl — requires new infrastructure at the urban edge: roads, water pipes, schools, and community facilities. Land may be cheaper at the fringe, but the total cost of servicing that land with infrastructure is high. And sprawl tends to create car-dependent communities far from employment centres, making transport more expensive and time-consuming for residents.
New Zealand's cities have historically grown primarily outward — large, relatively low-density urban areas spreading across flat land and hillsides. Auckland covers an enormous area for a city of 1.7 million people. The infrastructure costs of that dispersal, and the transport congestion it creates, are among the most significant challenges urban New Zealand faces.
The Planning System and Why It Mattered
For over 30 years, the Resource Management Act 1991 — the RMA — was the primary law governing how land is used and developed in New Zealand. Councils used the RMA to create district plans — the rulebooks that determined what could be built where.
The RMA was designed to protect the environment and give communities a say in development decisions. It did both — but it also made building new housing slow, expensive, and uncertain.
District plans were often restrictive. Low-density zoning in existing suburbs meant most residential land could only have a single house on it, regardless of its proximity to transport or employment. Height limits stopped apartments from being built in areas where demand was high. Heritage protections, sunlight angles, and character rules added layers of restriction. And the consent process — required for almost anything that departed from the standard rules — was slow, costly, and often unpredictable.
The result was a planning system that made it hard to build enough homes in the places people wanted to live. Supply could not keep pace with demand, and prices rose accordingly. New Zealand has a land mass comparable to the United Kingdom but only five million people. The constraint was not lack of land — it was how the planning system governed what could be done with it.
The RMA Replacement
The RMA was repealed in 2023. It is being replaced with two new pieces of legislation — the Planning Bill and the Natural Environment Bill — both introduced to Parliament in December 2025. The government aims to pass both into law in 2026, with the new system fully operational by 2029.
The Planning Bill governs how land is used and how development happens. The Natural Environment Bill governs the management of natural resources — water, air, biodiversity, and the coast. Splitting the two functions into separate legislation reflects the view that the old RMA tried to do too many things in one law, creating tension between enabling development and protecting the environment.
The new planning system makes several significant changes. It standardizes zoning nationwide — instead of over 1,100 different zones with different rules across the country's councils, standardized zones will apply consistent rules for building height, site coverage, and daylight access. A developer in Christchurch will be able to use the same design as one in Auckland without navigating a completely different set of local rules.
It requires councils to plan for at least 30 years of housing capacity in their district plans, based on high population growth projections. Councils can no longer restrict urban growth through rural-urban boundary lines. And intensification — taller and denser development, particularly around public transport corridors — is to be enabled more broadly than under the old system.
Medium Density and the Townhouse Revolution
Before the new legislation even passes, changes made in recent years have already significantly altered what can be built in New Zealand's cities.
The Medium Density Residential Standards — MDRS — allowed three-storey buildings of up to three units on most residential land in the main urban areas without requiring resource consent. This effectively rezoned much of New Zealand's residential suburbs for townhouses and low-rise apartments by default.
The impact has been significant. Townhouse construction has surged in recent years. New dwelling consents are increasingly dominated by multi-unit homes — townhouses, terraced houses, and low-rise apartments — rather than standalone houses. In the year to November 2025, around 36,000 new dwellings were consented, with multi-unit homes leading the growth.
This shift in housing type has been the most visible expression of planning reform in practice. Suburbs that once had only standalone houses are now seeing townhouse developments on sites that were previously single lots. The character of many neighbourhoods is changing — a source of debate between those who welcome more housing choice and lower prices, and those who value the existing character of their community.
Auckland and Christchurch were given bespoke arrangements that allow them to adapt the MDRS to their local circumstances, provided they can demonstrate they are still enabling the required housing capacity.
Infrastructure and Urban Growth
One of the central challenges of urban growth is paying for the infrastructure it requires.
New development at the urban fringe needs roads, water pipes, wastewater systems, schools, and community facilities. That infrastructure costs money. The question of who pays — the developer, the new residents, or the existing ratepayers — is one of the most contested issues in urban planning.
Development contributions are charges levied on new development to fund the infrastructure required to service it. Councils charge them, developers pay them, and the cost is ultimately passed through to the price of new homes. High development contributions are one of the factors that make new homes in New Zealand expensive.
The government's Going for Housing Growth programme includes a second pillar specifically focused on infrastructure funding and financing. Changes to the Infrastructure Funding and Financing Act are being made to allow infrastructure levies to be used in a wider range of circumstances and to make the process of establishing levies easier, particularly for developer-led projects. The intent is to make it easier to finance the infrastructure that growth requires without overloading existing ratepayers or making development financially unviable.
A specific example is the Carrington residential development in Auckland — a large former Kāinga Ora site in Pt Chevalier and Unitec where an urban village of at least 4,000 homes is planned over the next 10 to 15 years. Projects like this — large-scale, brownfield urban developments that make use of existing infrastructure — are a key part of the government's housing growth strategy.
The Urban Growth Agenda
The government's Going for Housing Growth programme — structured around three pillars — is the most comprehensive attempt to increase housing supply through planning reform that New Zealand has undertaken.
The first pillar is freeing up land — removing planning barriers to development, requiring councils to zone for adequate housing capacity, and enabling intensification. The second pillar is improving infrastructure funding and financing so that growth can be supported by the infrastructure it needs without forcing impossible choices on councils or developers. The third pillar is providing incentives for communities and councils to support growth — the recognition that planning reform alone will not work if local communities and councils are actively resistant to new development.
The incentive dimension is important and often underestimated. Local politics in New Zealand have historically been strongly influenced by existing homeowners who benefit from rising prices and prefer low-density surroundings. Councils that approved new development were sometimes punished by their constituents at the ballot box. Creating positive incentives — financial or otherwise — for communities that welcome growth is a relatively new idea in New Zealand urban policy.
Regions and Growth Pressures
Urban growth pressure is not evenly distributed across New Zealand.
Auckland remains the dominant urban center — home to a third of the national population and the economic engine of the country. Its growth pressures are the most acute, its housing shortage the most severe, and its infrastructure challenges the most complex. Auckland is also the most diverse city in the country and home to the largest Polynesian population in the world.
Wellington is the capital and the center of government. It is smaller than Auckland — around 430,000 in the wider metropolitan area — and has seen population growth slow in recent years as public sector contractions reduced employment. Wellington's geographic constraints — hills and harbour on almost every side — make urban expansion physically difficult and expensive.
Christchurch is the South Island's largest city, with around 400,000 people. It is still rebuilding and reshaping itself after the devastating 2010-11 earthquakes, which killed 185 people and destroyed much of the city center. The rebuild has been the largest infrastructure project in New Zealand's history, and Christchurch's urban form — including the city center — continues to evolve.
Hamilton and Tauranga in the upper North Island are among the fastest-growing centres in the country, driven by both natural population growth and migration from Auckland. They are key nodes in the Golden Triangle — Auckland, Hamilton, Tauranga — which is home to more than half the national population and much of New Zealand's economic activity.
Many provincial towns and rural areas face the opposite challenge — population decline as people move to cities for work and services. Maintaining services and infrastructure in communities that are slowly shrinking is a persistent challenge for local government in many parts of the country.
Who Gets Left Behind
Urban growth does not benefit everyone equally. Rising land values in cities enrich those who own property and exclude those who do not. The people most affected by housing unaffordability — renters, younger people, Māori, Pacific peoples, and lower-income households — are also the people with the least influence over planning decisions.
Māori in particular face layers of disadvantage in housing and urban growth. Historical land confiscations significantly reduced the land base available to Māori communities. Urbanization from the 1950s onwards brought Māori to cities but often into overcrowded or poor-quality housing. Today Māori are more likely to rent, less likely to own their homes, and more likely to be in housing stress than non-Māori New Zealanders.
Urban planning decisions also affect communities in ways that go beyond individual housing costs. Where transport infrastructure is built shapes who can access employment. Where affordable housing is located affects which schools children attend, which health services are accessible, and what community life looks like. Planning for urban growth that works for everyone — not just those who already own property in the right suburbs — is one of the enduring challenges of New Zealand's cities.
Quick Q&A
What is the Resource Management Act and why is it being replaced? The RMA was New Zealand's main planning law from 1991 until 2023. It governed land use and development across the country. It is being replaced because, while it protected the environment and gave communities a voice, it also made building new housing extremely slow, expensive, and uncertain — contributing to New Zealand's housing crisis.
What are the Medium Density Residential Standards? Rules introduced in recent years that allow three-storey, three-unit buildings on most residential land in major urban areas without needing resource consent. They enabled a significant increase in townhouse and low-rise apartment construction in existing suburbs.
What is the Going for Housing Growth programme? The government's three-pillar strategy to increase housing supply: freeing up land through planning reform, improving infrastructure funding and financing to support growth, and creating incentives for communities and councils to welcome new development.
Why is Auckland's housing so expensive? A combination of high demand driven by population growth and migration, land and planning constraints that have historically restricted supply, high infrastructure costs, and a property market that has seen prices grow far faster than incomes for decades. Planning reforms are intended to address the supply side of this problem over time.
What does intensification mean? Building more homes on existing urban land — taller buildings, townhouses, and apartments rather than single standalone houses. Intensification uses existing infrastructure more efficiently than expanding the city outward and is particularly important around public transport corridors where people can live without needing a car.
Key Takeaway
How New Zealand's cities grow — where housing is built, how dense it is, how it connects to transport and infrastructure — shapes the quality of life of everyone who lives in them. For decades, a planning system that was too restrictive in the wrong places contributed to a housing crisis that has excluded growing numbers of New Zealanders from home ownership and pushed rents to unaffordable levels. The reforms underway — new planning legislation, medium density standards, the Going for Housing Growth programme — represent the most ambitious attempt in a generation to fix the supply-side problems at the root of that crisis. Whether they succeed in creating cities that are affordable, livable, and inclusive for all New Zealanders remains the defining urban challenge of the coming decade.
Sources
Ministry of Housing and Urban Development — Going for Housing Growth Programme
Beehive — Saying Yes to Housing Growth, June 2025; Planning Reform to Unlock Housing Growth, December 2025
Ministry for the Environment — Planning Bill and Natural Environment Bill, December 2025; New Planning System Factsheets
Stats NZ — Subnational Population Estimates at 30 June 2025; Urban-Rural Profile
The Environmental Lawyers — RMA Reform Updates, August 2025
Taituarā — Resource Management Reform Updates 2025-2026
Anderson Lloyd — Government Seeks Views on Housing Growth in New Resource Management System
Wikipedia — Demographics of New Zealand