Onterris, a global environmental solutions company, has acquired EcOz Environmental Consultants, expanding its consulting capabilities and geographic presence across northern Australia. The acquisition adds an established environmental advisory business with offices in Darwin and Alice Springs in Australia’s Northern Territory.
EcOz provides environmental consulting and advisory services supporting the development, operation, and rehabilitation of commercial and infrastructure projects.
Its services help customers address environmental regulations, operational risks, and stakeholder requirements.
The acquisition will integrate EcOz into Onterris’ consulting division, complementing the company’s existing Australian operations.
Onterris already operates across Queensland, New South Wales, Victoria, and South Australia.
The addition of EcOz strengthens its coverage of the Northern Territory and creates opportunities to support customers across a broader geographic area.
The transaction also expands the company’s access to professionals with local environmental expertise and established relationships throughout northern Australia.
Environmental consulting services are increasingly important for infrastructure development, natural resources projects, and other activities that require regulatory review and ongoing environmental management.
Companies undertaking these projects often rely on specialist advisors to evaluate potential environmental effects, manage compliance requirements, and engage with affected communities.
EcOz has developed a business focused on practical, science-based solutions for these challenges.
Its expertise spans the environmental and advisory requirements associated with responsible project development and ongoing operations.
For Onterris, the acquisition provides additional technical resources and strengthens its presence in a region with distinct environmental and regulatory conditions.
The company intends to combine EcOz’s local expertise with its existing consulting capabilities and international resources.
Onterris provides environmental solutions addressing challenges involving air, water, soil, regulatory compliance, and operational risk.
Its workforce includes scientists, engineers, consultants, and field professionals who help organizations manage complex environmental requirements.
The company has been developing its Australian operations as part of a broader strategy to expand its environmental services platform.
EcOz represents another step in establishing a more comprehensive national consulting network.
The integration is intended to improve the company’s ability to serve customers requiring environmental advisory services across multiple Australian states and territories.
For EcOz, the transaction provides access to a larger organization while preserving the expertise and client relationships developed by its existing team.
Owner and Managing Director Ray Hall emphasized the importance of the company’s local relationships and its commitment to environmental and community outcomes.
The acquisition also creates opportunities to expand services for existing EcOz customers through Onterris’ broader technical capabilities.
Nash Advisory acted as lead financial advisor to EcOz, while Ward Keller served as legal counsel.
Jones Day provided legal advice to Onterris.
The transaction strengthens Onterris’ Australian consulting business while expanding its ability to support complex environmental and regulatory projects.
By integrating EcOz’s Northern Territory operations with its existing national presence, Onterris aims to provide broader environmental advisory coverage and additional resources for clients across Australia.
KEY QUOTES:
“We are excited to welcome EcOz to Onterris and further expand our environmental consulting capabilities across Northern Australia. Since entering the Australian market, we have continued to build a comprehensive environmental solutions platform, and EcOz represents an important next step in that strategy. The team’s strong technical expertise, trusted client relationships, and deep local presence across the Northern Territory make them an excellent fit for Onterris. Together, we will be better positioned to help clients navigate complex environmental and regulatory challenges, deliver sustainable project outcomes, and advance our mission of supporting both planet and progress.”
Vijay Manthripragada, President And CEO Of Onterris
“I’m incredibly proud of what EcOz has built and the legacy of good work our team has delivered across the Northern Territory. That legacy has always been grounded in strong local relationships, trusted expertise and a genuine commitment to the communities and environments we serve. I’m excited about what comes next and the opportunity to build on those strengths as our people, capabilities and impact continue to grow as Onterris.”
Ray Hall, Owner And Managing Director Of EcOz Environmental Consultants

