Teaching Kiwi homeowners the Building Act isn’t optional — it’s a social responsibility

For most New Zealanders, a home is the biggest investment they will ever make, yet very few understand how that home is actually built, regulated, or protected under the law. In a country where homeowners are often directly involved in renovations and construction decisions, this gap in knowledge is not just a personal risk — it’s a systemic one, with consequences that have already cost the nation billions.

New Zealand has always been a country of homeowners. Most of us share the same dream — owning a standalone house, a small section, something that is yours, something you can shape, extend, improve over time. While the urban landscape is undeniably changing, and cities like Auckland are seeing a steady rise in apartments and multi-unit developments, the reality remains that most people still live in houses, townhouses, or units. Data from Stats NZ shows a clear increase in attached dwellings over the past decade, particularly townhouses, yet standalone homes and low-density living still dominate how New Zealanders experience housing.

And with that comes something we don’t talk about enough — responsibility. Not in an abstract sense, but in a very real, practical way. In New Zealand, homeowners are often directly involved in maintaining, altering, and renovating their homes, making decisions that affect not only comfort and aesthetics, but the safety and performance of the building itself. And yet, most people are doing this without any real understanding of how a building works, what the Building Act requires, or how the consent process actually works.

So when the time comes to renovate, extend, or build, people do what feels natural — they trust. They trust the builder, they trust the process, and they assume that if something is being built, it must be done correctly. That assumption, however, is not new, and it has already cost this country more than most people realise.

The book Rottenomics by Peter Dyer carefully documents how New Zealand’s leaky buildings crisis was not just the result of technical mistakes or poor materials, but a combination of systemic failures — deregulation, shifting responsibilities, design changes that didn’t suit the local climate, and a construction industry that, at the time, was not equipped to manage those changes. But within that system, there was another layer that often goes unspoken — homeowners who simply didn’t have the knowledge to question what was happening.

People were building and buying homes without understanding the basics of weather-tightness, without knowing what to look for, and without realising how critical certain stages of construction were. They relied on professionals, often without any framework to challenge or verify what they were being told. The outcome is well known: tens of thousands of homes affected (or maybe hundreds?), costs reaching into the tens of billions of dollars, and consequences that are still being dealt with today, both financially and emotionally. It was not only a failure of policy or industry — it was, at least in part, a failure of shared understanding.

And what is perhaps more uncomfortable is that this is not something that belongs to the past. Unfortunately, the same patterns continue to appear, just in quieter, less visible ways. Recently, I was approached by a homeowner who was struggling to obtain a Code Compliance Certificate for a building consent issued in 2021. On the surface, it sounded like a documentation issue, something relatively common. But when I visited the site, it became clear that the problem ran much deeper.

The owner had trusted the builder to manage the process entirely. Inspections that should have been carried out during construction — foundations, framing, cavity — had simply not happened. Construction, however, has already been completed. When the owner showed me photos taken during the construction stage, it was immediately obvious that the issues were not minor or cosmetic. What had been done was not just poorly executed, it was fundamentally incorrect, in ways that would inevitably lead to failure and potentially cause damage to other parts and structures over time.

And yet, from the homeowner’s perspective, everything had seemed fine. The builder was licensed, the work was progressing, and there was no reason, from their point of view, to question what was happening. This is where the real issue sits, in my opinion, not in bad intent, but in misplaced trust.

There is a common belief that a licensed builder guarantees a correct outcome. In reality, licensing confirms a level of qualification, but it does not replace oversight, nor does it remove the homeowner’s role in understanding what is happening on their own property. In a system like New Zealand’s, where a large portion of building work happens in small-scale residential settings, that gap in understanding becomes critical.

What makes this even more striking is how differently we approach other assets. Most people, even without technical training, understand the basics of owning a car. They know when it needs servicing, what fuel to use, what warning signs to look out for, and how to respond when something goes wrong. Yet when it comes to houses (often the most valuable asset a person will ever own) that same baseline knowledge simply isn’t there. People live in their homes for years, sometimes decades, without ever learning how water moves through a wall, why inspections happen at specific stages, or what compliance with the Building Act actually means.

And this lack of knowledge is not just about theory, it leads to real-life consequences. because when something goes wrong, it is not the system that carries the long-term impact. It is the homeowner or future buyer, it is their time, their finances, their stress, health and their sense of security.

If there is one lesson to take from the leaky homes crisis, and from the cases that continue to emerge today, it is that basic building literacy should not be optional. Not at a professional level, and not to replace the role of builders, architects, or councils, but at a level that allows people to ask questions, to understand the process, and to recognise when something doesn’t feel right.

Because the system, on its own, is not enough and as we know now, it never has been.

And perhaps that is where the conversation needs to shift — away from seeing building knowledge as something reserved for industry professionals, and towards recognising it as something that should be shared more openly with the people who are most affected by it. Teaching homeowners the basics of the Building Act, consent processes, and construction is not just helpful guidance. It is, in many ways, a form of protection.

And more than that — it is a social responsibility for our kids.