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.

Hazard Analysis

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

Construction Monitoring

Construction monitoring ensures the successful execution of geotechnical and structural designs during building projects.

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.

Fast Turnaround Times

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

A geotechnical report evaluates a site’s subsurface conditions to guide safe construction. These reports can be used to support a Resource Consent or Building Consent application.

Environmental Assessment

Where there is a risk of contaminated soils at a site, Subterra can provide an assessment in the form of a Preliminary Site Investigation (PSI) or Detailed Site Investigation (DSI).

HAZARD ASSESSMENT

Subterra can undertake a qualitative or quantitative assessment of existing or potential land damage and provide remediation or mitigation options.

Construction Monitoring

Construction monitoring ensures the successful execution of geotechnical and structural designs during building projects, such as residential dwellings.

  • 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!

  • Tim Anderson, Cashmere

    Thanks again for undertaking this report so promptly.
    Your work on site and the report preparation is simply fantastic. 
    Well done and all the best for your business.