Stop work orders
Public sector build costs appear of out control to this government
Several high-profile projects have experienced huge cost over runs². This is nothing new³. But the scale and breadth of overruns across many sectors, is shocking, including to the new government.
To understand drivers of cost increases, government has paused many projects.
Across the economy construction costs have outstripped other sectors (see Figure 2), reflecting not just post-covid inflation, but also public procurement practices not grounded in value-for-money. Costs in the sector are 27 percent higher than immediately before COVID.
Figure 2: Cost rises in construction have outstripped the rest of the economy
Producers Price Index - construction (Dec 2010 = 1000)

Source: Statistics New Zealand
Some projects, like the Interislander ferry upgrades and school rebuilds, are halted for purely financial reasons. Other projects, like blowouts on public transport projects, have competing priorities.
Our assessment
Strategic fit
Stop work orders bring a sharp shock to the system. A harsh approach may be costly, but it may be the quickest route to restoring fiscal discipline within public sector procurement. It is a classic principal-agent problem – the government cannot directly manage procurement. It relies on public sector procurers and project managers to work towards value-for-money.
Cost
This approach may impose a high upfront cost to both the public sector and the construction sector. Halting in-progress work may incur expensive contract-break fees and expensive remediation work if/when work continues. The disruption in the midst of a recession creates uncertainty within the sector, deterring investment in capabilities we need.
Efficiency
A sharp shock may impose discipline quickly, but it is also likely to create costly disruption. In contrast, a more gradual approach to reintroducing value-for-money would bake-in existing cost blowouts and may lose momentum and get bogged down.
Incrementalism may also compromise the strength of the signal. Public sector procurement may doubt government commitment to ensuring value-for-money, further lengthening the time it takes to get costs under control.
Effectiveness
Work pauses alone will not deliver results. Sustained leadership is needed to clearly signal to the public sector that value-for-money must be a priority, now and into the future.
Focussing on lowest cost will not deliver value-for-money. The focus must be on whole-of-life costs, including delivering lower operating and maintenance costs higher upfront build cost.
Ongoing value
Combined with sustained leadership setting clear expectations of value-for-money, this approach has the potential to set public procurement on the right track. Ministers must be clear and consistent in their expectations of value-for-money as long as they are in office.
² See for example, “How did the cost of moving two schools blow out to more than $400m?”, “Wellington’s $1.2m bus stops costing more than a home”
³ Bent Flyvbjerg and others document suggest “Underestimating costs in public works projects: error or lie”, Journal of the American Planning Association, 68(3), pages 279—295.