When should I involve a geotechnical engineer?

As early as possible, ideally before you buy or fix the lot layout. Early advice can avoid costly redesign later.

Can you work with my civil engineer and surveyor?

Yes. We coordinate directly with your project team so the geotechnical input fits the scheme.

What is a geotechnical completion report?

It confirms that earthworks were done as specified and sets out any foundation conditions for each lot. Council usually needs it for 224c.

Do you test fill during earthworks?

Yes. Our team carries out compaction testing and inspections as the earthworks progress.

SUBDIVISION & LAND DEVELOPMENT

Ground advice that keeps your development on track

Ground conditions can make or break a subdivision. Early geotechnical input shows you what the land can support, where the risks are and what they will cost, before you commit to a scheme.

We work with developers, surveyors, planners and civil engineers from feasibility through to 224c. You get one geotechnical team for the whole project.

When you need us

Before you buy: feasibility and due diligence on a site
Scheme design: building platforms, lot layout and roading on sloping or difficult ground
Resource consent: geotechnical reports to support your application
Earthworks: specifications, monitoring and testing during construction
224c sign-off: completion reports and certification for council

What's included

Desk study and site walkover
Geotechnical investigation scoped to the development
Slope stability and liquefaction assessment where needed
Building platform and foundation recommendations for each lot
Earthworks and retaining recommendations
Responses to council requests for information
Earthworks observation and testing
Geotechnical completion report for 224c

How it works

Send us your plans and the site address.
Desk study. We review geology maps, the NZ Geotechnical Database, council records and historic aerials.
Proposal. You get a clear scope, fee and programme.
Site work. Our team carries out the fieldwork or inspections with minimal disruption to your site.
Report. Clear findings and practical recommendations.
Ongoing support. We answer council RFIs and support you through design and construction.

Why Gibb Ritchie

Principal-led. A director is involved in every project, from scope to sign-off.
Chartered professionals. Work led by Chartered Professional Engineers (CPEng).
Local experience. We know Auckland's ground, from North Shore clays and Waitematā rock to volcanic and reclaimed land.
Practical advice. Solutions that are technically robust, commercially realistic and fit your project.
Responsive. We know geotechnical input is often on the critical path for design, consent and construction.
With you to the end. The same team supports you through consent and construction.

FAQs

Planning a subdivision? Send us the site address and your scheme plan, and we'll tell you what geotechnical input you'll need.

GIBB RITCHIE GEOTECHNICAL ENGINEERS