About Sub-Zone
A tight crew, under the surface
New Zealand-owned civil contractors, specialising in directional drilling and utility installation across Auckland.
Who we are
Who we are
Sub-Zone Networks Ltd is a New Zealand-owned civil contractor specialising in directional drilling and utility installations. Backed by over 20 years of directional drilling experience and a crew with extensive hands-on civil expertise, we deliver clean, precise installs, even in tight, high-risk environments. We are known for being easy to work with, responsive when it counts, and delivering high-quality installs the first time. We back our work, our people, and our partners.
Our values
Our core values
The standards our crew holds itself to, on every site, every day.
Own It
We take responsibility for our work and see things through. If something needs sorting, we handle it, no passing the buck.
Safety First
Safety is non-negotiable. We plan our work, follow our systems, and look out for each other, so everyone goes home to their families safe.
Get It Done Right
Accuracy is paramount. We do not cut corners. From drilling to reinstatement, we do it properly, so it is done once, and done right.
Back the Crew
We back each other on and off site. There is genuine trust in our crew, and it shows in how we work: like clockwork, taking pride in a job well done.
Respect the Site
We work clean, stay organised, and treat every site with respect, leaving it tidy, safe, and ready for what is next.
Bring the Right Attitude
We show up ready, stay solution-focused, and get stuck in, working well alongside clients and other crews to keep the job moving.
Safety & compliance
Safety and compliance
Safety is at the heart of our collaborative culture. We maintain rigorous compliance with NZ health and safety regulations, every team member trained in risk mitigation and underground utility protection. We operate to Tier 1 contractor standards with a Sitewise Gold rating and an ISO-compliant HSE system, and are progressing through Totika prequalification. As an Amotai Registered Business we are committed to supplier diversity and a sustainable, inclusive infrastructure sector.
