New Zealand’s construction sector has a productivity problem that has persisted for decades, and a new report from the New Zealand Chinese Building Industry Association has shone a fresh light on its causes and potential solutions. Building and Construction Minister Chris Penk welcomed the report, noting that productivity improvement in construction is central to the government’s goal of making housing more affordable.
“The construction sector is a crucial part of New Zealand’s economy,” Penk said, “and we want to work with industry to make it easier and more affordable to build.”
How Bad Is the Productivity Gap?
New Zealand’s construction productivity growth has significantly underperformed comparable economies over the past 30 years. While manufacturing and other sectors have seen substantial productivity improvements through technology adoption and process improvement, construction has made relatively modest gains. A house that took two people a certain number of weeks to frame in 1990 often still takes a similar effort today, despite improvements in tools and materials.
This isn’t unique to New Zealand — construction productivity is a global challenge — but the problem is particularly acute here due to the small scale of most NZ construction firms, the fragmented subcontracting model that dominates residential construction, and regulatory settings that add compliance costs without adding value.
What the Report Identifies
The NZCBIA report identifies several major contributors to New Zealand’s construction productivity gap:
- Fragmentation: The typical NZ house is built by a principal contractor coordinating 15 to 20 subcontractors, each optimising for their own schedule and output. This coordination overhead is significant and creates interfaces where quality and timeline issues emerge.
- Low prefabrication adoption: Offsite manufacturing can dramatically reduce on-site labour time and improve quality consistency — but uptake in NZ residential construction remains low compared to countries like Sweden and Japan.
- Regulatory compliance costs: The consenting system, inspection regime, and regulatory complexity add time and cost that don’t translate into better buildings. Reform in this area is underway but slow.
- Skills shortages: Workers who are less skilled or less experienced take longer to complete the same tasks, with lower quality outcomes. Investment in training and apprenticeships is a long-term productivity lever.
The Path Forward
There’s no single fix to construction productivity. The solutions — more prefabrication, better project management, streamlined regulation, more skilled workers — are all necessary and none is sufficient alone. What the report makes clear is that the status quo is costing New Zealand significant economic value, and that the political and industry will to change it is growing.