West Auckland · Auckland
Geotechnical engineers for West Auckland
Steep bush sections, deep weathering and old volcanic rock in the Waitākere Ranges.
Building in the Waitākere foothills usually means a steep section, mature bush and limited access for drilling rigs. Hand augers, Scala tests and careful mapping of the slope do most of the work, with machine drilling only where the design needs it.
Further down in Henderson, New Lynn and Te Atatū, flooding, soft stream deposits and intensification are the bigger issues.
Ground conditions in West Auckland
Waitākere GroupOld volcanic breccias and sandstones in the Waitākere Ranges, often deeply weathered.
East Coast Bays FormationSandstone and siltstone under the western suburbs.
Tauranga Group alluviumSoft soils along the Henderson and Oratia streams.
What we look out for
- Steep slopes and shallow landslides
- Deep residual soils with variable strength
- Flooding and soft ground near streams
- Tree roots and bush clearance limits on investigation access
Typical projects
- Houses and decks on steep Titirangi sections
- Slip repairs after heavy rain
- Infill and townhouse developments in Henderson and New Lynn
Every site is different. Geology maps and council overlays are a starting point; a site-specific investigation confirms what is actually there.
Start a project
Building in West Auckland? Send us the site address and we'll tell you what geotechnical input you need.
You get a clear, fixed scope and fee up front. Prefer to talk? Call 09 218 6915 or email info@gibbritchie.co.nz.
