practical advice and solutions to engineering problems

Our varied skills include:

Designing and managing engineering projects from start to finish, traffic engineering, transportation planning, resource planning, project management, structural engineering, civil design and HSEQ.


Our capability is continually expanding in response to our clients’ needs and we have an impressive track record in many areas.

Civil Engineering and Design

We find civil engineering solutions to a wide range of problems, from investigation through design and construction.

Project Management

Providing project management services to clients who require specialist advice for a wide range of engineering projects.

Streetscape and Urban Design

We have significant experience taking a project from design concept through to completion.

Traffic engineering and transportation planning

Traffic engineering and transportation planning are some of our core skills.

Planning Services

Our multi-disciplinary team has experience in the public and private sectors, so can help clients with a range of planning services.

Structural Engineering

We are experts in highway structures, including vehicle bridges, cycle bridges, over and underpasses and pedestrian structures.


We provide comprehensive Health & Safety, Environmental and Quality support and advice across the project lifecycle.

Our values

Excellent communication is a key ingredient in our project successes.

We have company values that are meaningful and employ staff that demonstrate and commit to them.


Gray Matter staff have excellent working relationships with others in the industry – clients, contractors and other consultants. We put together great teams that deliver what clients need, giving practical engineering advice and following projects through until they are complete.

We currently work with local and regional councils, the New Zealand Transport Agency, other consultancies and developers – and get excellent feedback.

Projects completed
Staff members
GM_Kihikihi 009
I would like to thank Karen and the team at Graymatter, for and outstanding job delivering the new roundabout at Hanlin Road. The project was very high profile, as it was outside the National Velodrome and St Peter’s School in Cambridge. Graymatter were involved from the beginning with project planning, and other activities needed to get funding approval. Graymatter led project and stakeholder workshops, and completed a comprehensive business case for the works. Graymatter also led investigations and completed the design work and contract documentation, and well as project supervision, and MSQA. Throughout the process the Graymatter team acted professionally and ensured tough questions were not avoided, and overall our stakeholders and partners enjoyed the positive collaborative honest and friendly approach taken. The end result is one the community is proud of, and looking at the project I can see many areas, where the inputs led by Karen and the team made a difference and ensured that value was added. Additional cyclepaths and bus access was able to be incorporated into the design. Karen also managed to keep all the parties working towards common agreed goals. The construction also was disrupted by COVID shutdown and Karen kept the project construction moving forward, and ensured that the all parties managed their own risks positively and colaboratively.   I would have no hesitation in recommending the Graymatter team for other works.
Paul Strange Asset Management team leader-Transportation