The IKEA Auckland development is New Zealand’s first IKEA retail store, located within the Sylvia Park precinct in Mount Wellington. The large format facility comprises approximately 34,000 m² of retail space across a multi-level building, integrating showroom, warehouse, food and beverage, and customer areas within a single destination. The development forms part of a major metropolitan retail hub, requiring integration with existing transport infrastructure, pedestrian connections, and surrounding commercial development.
The project includes a complex building footprint supported by a huge number of deep piled foundations to accommodate significant structural and operational loading demands. Subsurface conditions required detailed investigation to confirm founding levels, including variability in basalt depth across the site.
ENGEO provided geotechnical engineering services throughout the project lifecycle, including due diligence, detailed investigation, design support, and construction monitoring.
Our work included extensive site testing to develop a robust ground model to support the design phase. Detailed pile analysis was carried out in coordination with the structural engineers to optimise the number and depth of piles.
Prior to construction, extensive proof drilling was carried out across the building footprint to confirm basalt depth and inform pile embedment for building, crane, and pedestrian bridge foundations.
Construction phase services included monitoring of deep piles, ground beams, and pavement areas, with close collaboration across the project team to respond to site conditions and support delivery. We also carried out subgrade inspections for foundation construction and stormwater systems and provided ongoing recommendations during earthworks and construction activities.
A key challenge for the project was the combination of Christchurch ground conditions and the historical use of the site. Geotechnical risks such as liquefaction and variable subsurface conditions required careful characterisation and integration into foundation design. By developing a robust ground model and working closely with the design team, ENGEO helped identify appropriate foundation solutions early, reducing uncertainty and supporting efficient design development.
Environmental constraints associated with historical market gardening and fuel storage activities introduced potential contamination risks, particularly within shallow soils. Investigations identified localised exceedances of human health and ecological criteria, primarily limited to near-surface materials, while deeper soils were generally suitable for reuse.
ENGEO addressed these challenges through a targeted and practical approach that integrated environmental management with construction activities. This included supporting resource consenting under the NESCS, developing a Site Management Plan, and advising on the handling, reuse, and disposal of soils during earthworks. The coordinated geotechnical and environmental strategy enabled risks to be managed efficiently while maintaining programme certainty.
