New Zealand made 3 homes legal by right, then two big cities walked it back.

The Medium Density Residential Standards let a landowner build up to three homes of up to three storeys on most urban sites in New Zealand’s biggest cities. The key word is "by right": you did not need a resource consent for a build that met the standards. A resource consent is the case-by-case planning approval that used to be needed for extra homes, and it can add cost, time and uncertainty. By making three homes a permitted activity, the MDRS removed that step. The standards also set the shape rules, such as height, setbacks from the boundary, site coverage and outdoor space, so the homes fit the street.

It applied in the "Tier 1" urban areas, the country’s largest and fastest-growing cities. That means Auckland, Hamilton, Tauranga, the Wellington region and Christchurch. These councils were required to write the standards into their district plans from August 2022. The rule did not cover every small town in the country; it targeted the places with the most housing pressure. If your site sat inside one of these urban areas and was zoned residential, the three-home right generally applied to it.

Yes, but not everywhere it started. This is the point people get wrong. The MDRS was never repealed across the whole country. In 2026 it is still mandatory and in force in Hamilton, Tauranga and the Wellington region. Only two councils, Auckland and Christchurch, were given a legal path to drop it, and both used that path in late 2025. So the honest answer is: the three-home right still stands in three of the five original cities, and has been removed in the other two.

No, and this is a common misreading. The 2023 government did say it wanted the MDRS to become optional, but the law it passed in 2025 gave the opt-out to Auckland and Christchurch only. It did not let Hamilton, Tauranga or Wellington remove the standards. The government’s wider plan is to replace the MDRS for all cities in a later, separate law change (called Phase 3 of its resource management reform). Until that happens, "optional for everyone" is not the state of the law. It is only true for the two named cities.

After the 2023 election, a new National-led coalition government took a different view of how to add housing. It launched a programme called "Going for Housing Growth." Its argument was that blanket three-storey rights across whole cities were not the best tool, and that density should be steered toward places with good transport and services, such as near rail stations, busy bus routes and town centres, rather than spread evenly everywhere. It also wanted to hand councils more choice, tied to meeting housing growth targets. That shift in thinking is why the MDRS mandate was loosened rather than kept as-is.

Auckland used its opt-out. On 9 October 2025 the council partially withdrew Plan Change 78, which was the plan change that had put the MDRS into the Auckland Unitary Plan. It then notified a replacement, Plan Change 120 ("Housing Intensification and Resilience"), on 3 November 2025. PC120 does not spread three-storey rights evenly. Instead it concentrates taller, denser housing around rail stations, frequent bus corridors and suburban centres, and it also downzones some hazard-prone land. So Auckland kept a strong intensification plan, but changed its shape from "everywhere" to "near transport."

Christchurch also opted out, but it had to earn it. Under the 2025 law, a council could only withdraw its MDRS plan change if it could show enough housing capacity: roughly 30 years of projected demand plus a 20 percent buffer. Christchurch first approved extra medium-density zoning around its centres (the city centre plus suburbs like Riccarton, Hornby, Merivale and Papanui) so it could meet that test. Once it did, the Minister approved the withdrawal of the remaining parts of Plan Change 14 in November 2025. Total medium-density zoning in the city actually grew under this process, even though the blanket MDRS right was dropped.

Not simply less, but differently placed. Both cities dropped the blanket three-home right, but both kept, and in Christchurch’s case grew, medium-density zoning around their centres and transport routes. The change is where the density sits, not whether density exists. For an owner this matters a lot: on a plain suburban site far from a station, the old automatic three-home right may be gone; on a site near a rail station or busy bus route, the new rules may allow more than three homes.

It was too short-lived, and too recently changed, to have a clean long-run result. What is clear is the design idea: it made three homes a permitted activity across whole cities, which is one of the boldest by-right upzones any country has tried at national scale. The counter-argument the new government made was that even in the older Auckland Unitary Plan, which allowed density before the MDRS, most new homes clustered where the market and transport supported them. That debate, blanket rights versus targeted density, is the heart of why the rule was changed. We avoid quoting a single build-count figure here because the reform period was short and the numbers are still contested.

It is the current government’s housing supply programme, announced in July 2024. It has three parts: free up land for building by removing planning barriers, improve how infrastructure like pipes and roads is funded, and give councils and communities incentives to support growth. Inside this programme, Tier 1 councils are told to allow heights and densities that match how accessible an area is, and to pick out "strategic transport corridors", such as key bus routes, and allow taller buildings around them. It is the policy frame that replaced the blanket MDRS approach with a transport-focused one.

Two laws matter. The first, the Resource Management (Enabling Housing Supply and Other Matters) Amendment Act 2021, created the MDRS and made it mandatory for Tier 1 councils. The second, the Resource Management (Consenting and Other System Changes) Amendment Act 2025, came into force in August 2025 and built the bespoke opt-out path for Auckland and Christchurch, with conditions, such as Auckland enabling tall buildings around named rail stations, and Christchurch proving 30 years of housing capacity. Both are New Zealand government statutes and can be read on the official legislation and Ministry for the Environment sites.

The New Zealand story is the clearest warning about durability. A reform can be strong, national, and even bipartisan (the MDRS was all three) and still be unwound when the government changes. That does not mean the idea failed; the standards still stand in three cities and the two opt-out cities kept density near transport. The real lesson is that durability is something you have to build in, not assume. A rule tied to broad support, clear housing outcomes, and hard-to-reverse legal footing survives a change of government better than one that rests on a single Parliament’s will.