Hunua Quarry Fast Track approval secures approximately 225 million tonnes of greywacke
Fletcher Building welcomed the Expert Panel’s decision, issued on 15 October 2026 under the Fast Track Approvals Act, approving the development of Winstone Aggregates’ Hunua Quarry.
The decision enables the expansion and deepening of the existing quarry, providing access to approximately 225 million tonnes of high-quality greywacke. According to the company, this materially increases the available and consented resource and supports future quarry operations at Hunua for more than 50 years.
The announcement does not quantify the financial impact of the approval.
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What the approvals package covers
The approvals package includes the principal consents and authorisations required for the development of the quarry, along with related conditions. The source does not list those conditions individually.
Key elements of the decision
- Principal consents and authorisations required for the development of the quarry
- Related conditions attached to the approvals
- Access to approximately 225 million tonnes of high-quality greywacke
- Support for future operations at Hunua for more than 50 years
| Item | Detail | Why it matters |
|---|---|---|
| Decision | Expert Panel approval under the Fast Track Approvals Act, issued 15 October 2026 | Approves the development of Hunua Quarry |
| Resource | Approximately 225 million tonnes of high-quality greywacke | Materially increases the available and consented resource |
| Operating life | More than 50 years of future quarry operations | Supports continued operations at Hunua |
The release does not disclose capital expenditure, the timing of expansion works or current annual production.
Why aggregate matters to Auckland’s growth
Aggregate is crushed rock used in infrastructure, housing and commercial construction. Greywacke is a hard rock type that is quarried for this purpose.
A consented resource matters because a quarry needs the relevant consents and authorisations to operate. Securing them in the approvals package is what allows the development of Hunua to proceed.
The Fast Track Approvals Act provided the pathway for this decision, with an Expert Panel issuing the approval.
Fletcher Building’s Managing Director and Chief Executive Officer noted that Hunua has supplied aggregate to the Auckland region for around a century. The company said the approvals will help ensure the continued availability of locally sourced materials close to key markets.
Domestic supply security has drawn official attention elsewhere in Fletcher Building’s portfolio too, with a government grant for Golden Bay Cement aimed at keeping New Zealand’s only domestic cement plant operating until at least 2040.
Management commentary and next steps
Andrew Reding, Managing Director and Chief Executive Officer
“This decision secures a significant long-term source of aggregate for Auckland…”
Reding said the approvals include a comprehensive set of conditions. He stated the company is committed to meeting these requirements and will continue to engage constructively with mana whenua, neighbouring landowners and the local community as the project progresses.
For investors, a long-dated, consented resource is relevant to Fletcher Building’s aggregates position, although the release does not quantify any financial benefits.
Updates on compliance with the conditions and on project progress will be the items to watch.
For investors wanting to see how this approval sits within the group’s wider financial position, our full explainer on Fletcher Building’s FY26 profit recovery walks through the earnings swing, the reduction in net debt and management’s outlook for volumes into 2027.
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