About Us.

Our Commitment to Excellence
Sin Qua Non, a Latin phrase translating to 'something that is absolutely necessary,' encapsulates the essence of SQN. At SQN, this commitment to unwavering principles of integrity, impartiality, and innovation forms the cornerstone of our mission.

A Legacy of Safety
For many years, SQN has been dedicated to ensuring the safety of New Zealanders. We protect individuals in worksites, workplaces, and within their homes throughout Aotearoa. Our commitment to asbestos management drives us to provide tailored, real-world solutions for every client and every process.

Setting the Standard
Our objective has always been to deliver 'best-in-class' service across major industries and set a new gold standard in asbestos management, consulting, and training nationwide.

Leadership and Growth
In 2019, Shane Finnegan and Craig Dooley assumed ownership of SQN. Since taking the helm, the company has surged in strength, expanding from the North Island to the South Island. The acquisition of EnviroWise in 2021, has brought Ethan Scott on as the 3rd owner and director. His alignment with our core values and shared commitment to delivering high-quality services to our clients has been a perfect fit.

Expanding Our Services
The newest chapter for SQN is the acquisition of Geosciences. This strategic move allows us to integrate Geosciences expertise and services in the Land Contamination area, further enhancing our ability to provide comprehensive environmental solutions to our clients.

Expanding Our Reach
We now boast an even wider geographic reach and a more expansive portfolio of services, equipping us to meet the diverse demands of clients across the nation, with offices located from top to bottom.

Leaders in Asbestos Training
As part of our commitment to excellence, SQN proudly operates a dedicated Asbestos Training Division. This division ensures that individuals and organisations are well-equipped with the knowledge and skills necessary to manage asbestos safely and effectively. We believe that education is key to safeguarding the well-being of our clients and the wider community, along with enhancing the industry.

Leading the Way to a Safer Future
Our journey continues, and we look forward to creating a safer, healthier, and more sustainable future for all New Zealanders.