Stevenson
Aggregate
Aggregate solutions for commercial, infrastructure and residential use.
Aggregate Products
Roading
Sealing chips, basecourses, sub-basecourses and subgrade aggregates manufactured for use in roads and heavy duty pavements.
Read moreDrainage
Permeable or blended aggregates in fine or coarse specifications for drainage applications.
Read moreSand
Sand and pumice aggregates produced in a range of specifications for use in a variety of applications including manufacturing, sports turf and horticulture.
Read moreConcrete
Concrete aggregates manufactured for strength and binding ability and produced to consistently fine tolerances.
Read moreOur Team
Our aggregates team have been industry forerunners since 1912. We’re not just experts in aggregate extraction, processing and distribution, we’re committed innovators. We are continually working to develop new technologies and processes that will lighten our effect on the environment while delivering the best products possible. Quality and consistency are as important to us as they are to you.
Aggregate
News
Our Stevenson Managers at QuarryNZ 2026
10 August 2026
Our Stevenson managers are proud to be attending QuarryNZ 2026, joining industry leaders from across New Zealand to connect, share insights, and explore the opportunities and challenges shaping the future of quarrying. As representatives of one of New Zealand’s leading aggregates and infrastructure businesses, they look forward to strengthening industry relationships, learning from peers, and […]
Clevedon Quarry Expansion Enters Fast-Track Process
17 August 2026
The proposed expansion of Stevenson Aggregates’ Clevedon Quarry has been accepted for referral under the Government’s Fast-track Approvals Act, moving the project into the next stage of assessment. The project aims to increase the quarry’s aggregate resource from 60 million tonnes to approximately 150 million tonnes, helping meet Auckland’s future demand for construction materials. The […]
Copper Skinks Released at Drury Quarry
09 May 2024
Environmental Compliance Manager and Kaiārahi Tara Edwards-Tusa and Quarry Operator Mike Buckley worked with ecology consultants Bioresearches to locate, catch and release eight endemic Copper Skinks at Drury quarry. The skinks, the smallest of New Zealand’s endemic lizards, were found in the western façade area of the quarry and moved into a covenanted, pest-controlled area […]