New Zealand’s infrastructure challenge is not a lack of ambition, nor is it necessarily a lack of investment. Despite ranking among the top 10% of OECD countries for infrastructure spend, New Zealand sits in the bottom 10% for infrastructure efficiency. Closing that gap will require more than additional funding. It will depend on how projects are selected, scoped, designed and delivered, and whether the wider infrastructure system can provide the certainty needed to build long-term capability.
Building Nations 2026 highlighted a sector that appears increasingly aligned on where the challenges lie. Across discussions spanning transport, water, digital infrastructure and artificial intelligence, five themes consistently emerged that may help define infrastructure success over the next decade.
Cost vs Value
For years, increasing project costs have often been associated with declining productivity. However, evidence presented at the conference suggested the reality is far more nuanced. Over the past two decades, infrastructure projects have been expected to deliver much more than they once did. Regulatory changes, legislative requirements, resilience standards and evolving community expectations have fundamentally changed what infrastructure is required to achieve.
A striking example was the cost of ground improvements. Prior to the Christchurch earthquakes, NZTA spent approximately $8,000 per lane kilometre on ground improvements for state highway projects. Today, that figure is closer to $1.4 million per lane kilometre.
The increase reflects legitimate improvements in resilience and safety standards, but it also highlights a broader challenge. Every additional requirement may improve an individual project, yet collectively those requirements can reduce the number of projects that can be delivered within finite budgets.
The next decade will require more deliberate conversations about value. Not whether resilience matters, but where increased investment delivers meaningful outcomes and where complexity may be outweighing benefit. Infrastructure success will increasingly depend on striking the right balance between performance, resilience and affordability.
Decision Quality
If one theme united speakers from across the political and infrastructure spectrum, it was the importance of decisions made before construction begins.
Infrastructure Commission analysis of 143 business cases revealed only one where costs were weighted at 50 percent within the assessment process. In most cases, costs accounted for between 10 and 20 percent of the overall weighting. Jeff Cooper compared this to going into a car shop: you weight the costs at 10%, you walk out with the Ferrari and then you talk about a funding problem to your partner.
At first glance this may seem a technical detail. In reality, it goes to the heart of how investment decisions are made. If affordability is not rigorously tested during project development, it often resurfaces later as budget pressure, scope reduction, redesign or delay.
The lesson is not that benefits should be undervalued. Rather, successful projects require a realistic understanding of both value and cost from the outset.
“Projects don’t go bad, they start bad. And we are taking the time to get this right.” Chris Bishop, Minister for Infrastructure
Spending more time understanding problems, testing options and resolving risks upfront is often the fastest path to successful delivery.
Continuity
For decades, New Zealand’s infrastructure sector has operated within cyclical patterns of announcement, review, delay and cancellation.
The consequences extend well beyond individual projects. Uncertainty affects investment decisions, workforce capability, supply chains and long-term productivity. It discourages organisations from investing in the people, technology and systems required to improve delivery performance.
One of the more encouraging observations from Building Nations 2026 was the apparent shift towards greater alignment on this issue.
Both major political parties signalled the importance of maintaining momentum on nationally significant infrastructure investment and improving confidence in the project pipeline. While differences remain around priorities and delivery methods, there appears to be growing recognition that repeatedly changing direction comes at a cost.
The proposed introduction of mandatory asset registers and long-term capital planning for central government signals a move towards a more mature infrastructure system, one where investment decisions are informed by evidence, long-term needs and a clear understanding of asset performance.
Infrastructure pipelines are only as credible as the systems supporting them. The next decade will be defined not by how many projects are announced, but by how consistently New Zealand can progress projects through planning, funding and delivery.
Digital Infrastructure
Transport, water and energy have traditionally dominated infrastructure discussions. Increasingly, digital infrastructure belongs in the same conversation.
One of the conference’s strongest themes was the growing importance of data centres and the role they play in supporting modern economies. As artificial intelligence, cloud computing and digital services continue to expand, demand for computing capacity is accelerating rapidly.
Data centres are no longer niche technology assets. They are becoming critical national infrastructure.
Despite international attention on water consumption, New Zealand’s temperate climate means many facilities can rely on air-cooled or closed-loop systems. The bigger challenge is energy.
As Fraser Whineray noted “The issue is not water. The issue is ensuring we have enough renewable energy to support the next generation of digital infrastructure.”
For New Zealand, this presents both a challenge and an opportunity.
The country is well positioned due to its renewable energy profile, political stability and climate advantages. However, realising that opportunity will require coordinated planning around power generation, transmission capacity, fibre connectivity, land availability and consenting pathways.
The discussion also highlighted the strategic importance of data sovereignty. Much of New Zealand’s data is currently processed and stored overseas, creating risks around national resilience and control of critical information. Ensuring computing capacity exists within New Zealand’s borders was presented as an increasingly important economic and security consideration, particularly for essential services and public sector systems.
Just as previous generations invested in transport and utility networks to enable growth, the next generation will need to ensure New Zealand’s digital infrastructure keeps pace with economic and technological change.
Foundations First
While discussions around AI and water reform may appear unrelated, both highlighted the same underlying lesson: success depends on the strength of the foundations underneath.
Artificial intelligence continues to generate significant interest across planning, design and asset management. Yet one of the strongest messages from the conference was that organisations cannot shortcut the fundamentals.
Many infrastructure owners are data rich but information poor. Decades of asset information, reports, drawings and records often sit across multiple systems, making it difficult to generate meaningful insights.
As Eric Peissel observed, the least glamorous part of AI may also be the most important: cleaning, organising and governing data.
The same principle applies to water reform.
The move towards programme-based delivery models and new regional water organisations is intended to improve efficiency and support long-term investment. However, structural reform alone will not deliver better outcomes. Success will still depend on governance, planning, asset information and effective execution.
Whether discussing AI, water networks or transport assets, the message was remarkably consistent. Technology, new delivery models and organisational change can create opportunities, but they cannot compensate for weak foundations.
Looking Ahead
Building Nations 2026 highlighted a sector that increasingly understands the challenges it faces.
Affordability matters. Front-end decisions matter. Pipeline continuity matters. Digital infrastructure matters. Strong foundations matter.
None of these themes are particularly new. What feels different is the growing alignment around them. The next decade is unlikely to be defined by a lack of ideas. It will be defined by New Zealand’s ability to consistently apply the lessons it already knows. Better project selection, better planning, stronger institutions and more disciplined investment decisions may ultimately do more to improve infrastructure outcomes than any single policy, technology or funding announcement.
Success will not be measured by how much New Zealand spends. It will be measured by how effectively that investment is translated into long term value. In a world of constrained budgets and rising expectations, the ability to clearly articulate that value may become one of the infrastructure sector’s most important capabilities.
