Welcome To Subterra

Subterra are experts in the field of geotechnical engineering. Our experienced geotechnical engineers provide advice at the first stages of
commercial and residential land developments.

What we Do

Hazard Analysis

Qualitative and quantitative hazard analysis including slope stability, liquefaction, and rockfall risk

Construction Monitoring

Construction monitoring and validation of earthworks during your project’s construction phase

Design

Design of foundations, retaining walls, and other ground improvement measures

About Us

Established in 2020, Subterra has been involved in geotechnical engineering consulting across New Zealand ever since. We provide geotechnical engineering services in Christchurch and the greater Canterbury area, as well as frequently servicing the West Coast and Nelson areas.

The key elements of Subterra’s success have been:

Quick Delivery

Competitive Pricing

Good Communication

On-Site And Desktop Investigation

With thorough on-site and desktop investigation, Subterra determines the composition and geotechnical properties of the subsoil, as well as the hazards present at the site.

With this information, we provide guidance about suitable foundations, ground improvements, or hazard mitigation measures which might be required for your project, ensuring you comply with regulatory body standards.

 Services

Geotechnical Reports

Geotech reports can be used for many purposes, such as to support a Resource Consent or Building Consent application

Intrusive Investigation

In order to understand the subsoil profile, geotechnical site investigation is undertaken. This involves collecting data

Deep Machine
Testing

In some cases, such as where a site is susceptible to liquefaction damage in a seismic event, deep machine testing and analysis is undertaken

Hazard
Assessment

Each site can pose unique challenges depending on its location, geomorphology, seismic setting, and other factors

Testimonials

  • Liz Keys, Bluff

    I had a fast and dirty job that required a geotechnical report on a residential section in Bluff. Anything to Bluff is an extra hassle for most companies, so I was pleased to hear from Subterra with a reasonable quote for travel, survey and reporting. Harry was able to fit me into his schedule, did a thorough job and produced the required geotechnical report within a week's turnaround. This met my due diligence requirement prior to purchase and council requirements. It was a pleasure to meet a young professional doing what he trained to do and provide services to a novice in homeownership and building. I can recommend Subterra for geotech services that are prompt, accurate, professional and affordable

  • Kerry Oberholzer - Sales Manager, Holloway Builders

    Holloway Builders has worked with Harry Greenfield from Subterra since 2021. We are very happy with the services that Harry at Subterra offers us. Great communication and very efficient. A highlight with this great working relationship is when a commitment is made it is met! We look forward to working with Harry in the future and have also recommended him to others.

  • James Gale - Director, Quadrant Surveyors

    I highly recommend Harry Greenfield of Subterra – we’ve involved Harry on a number of projects and have received nothing but positive feedback as a result of his works/tasks completed.

  • Rebecca Whitehouse - HR Manager, Whitehouse Builders

    I have used Subterra for my personal geotech needs and also our clients at work. I will continue to use Subterra in the future as Harry goes the extra miles for his clients and I can trust him to do a great job for all involved!