Since 2002, we've provided consulting services at the senior level to the public sector, private businesses and NGO's in New Zealand, and internationally.

We appreciate that you ask for our assistance because you are under pressure or may need specialist expertise that it doesn’t make sense to retain on your team.  Therefore delivering to your expectations with regard to time, cost and quality is integral to the success of our business.

Our clients tell us that they appreciate the tailored approach we take to each assignment, how easy we are to work with and the high level of professionalism they can count on from our people

Our leadership team is a tight group of Partners and Senior Consultants. Together, they bring substantial senior expertise – a valuable combination of public and private sector management experience coupled with many years consulting. We are very engaged in the challenges our clients are grappling with.

Our wider team includes Associates and Consultants most of whom have at least 10 years’ experience in their field of expertise. Our team of analysts are employed for their intellectual ability and work ethic and work closely with the rest of the team. 

What people have to say

They offer breath taking clarity. They are incredibly intellectual. Their advice is incredibly sound and they provide pinpoint tailoring


They have a stable of highly talented individuals. I know if I couldn’t get the resource I asked for then they would provide me with somebody of equal talent


TB have good solid people who will do the work with you


They are fantastic. Love the way they integrate into our team



Partner Organisations

At Tregaskis Brown, we have a number of other organisations that we can partner with to provide our clients with access to the broadest range of expertise and advice, without making it complicated for them. These partner organisations share our service excellence approach and are easy to work with.

Our partner organisations include:

Allen + Clarke – a leading public policy consultancy
Catalyze – helping organisations make effective decisions in complex situations
TwentyTwo – New Zealand’s leading independent property advisors


Allen + Clarke

Allen + Clarke is New Zealand’s leading public policy consultancy firm.  

With a team of 70, they have completed over 1000 public policy projects since their establishment in 2000. 

Based in Wellington and Melbourne, but working globally, they are trusted advisors to the public sector, businesses, and NGOs. 

Their key service offerings include:

  • Policy and regulatory design
  • Implementation and review
  • Business change
  • Evaluation and research
  • Secretariat and programme support.

For more information on Allen + Clarke, please visit their website.

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The best results are delivered through effective decision-making that engages people and aligns organisations.  Catalyze designs and delivers structured group decision processes and tools. Their methods are people focused, inclusive and transparent with robust and validated decision theory at their core.

Example Applications

  • Helping a global energy company to decide on a decommissioning strategy, taking into account diverse stakeholder perspectives.
  • Optimising a portfolio of R&D investments for a major defence and transportation organisation.
  • Enabling a division of a global corporation to understand their opportunities and constraints, to clear the clutter and to focus, and subsequently delivering substantial growth.
  • Implementing strategy – working with a world-leading business at both corporate and divisional level to prioritise investments in alignment with business objectives.

Catalyze have an established track record of enabling organisations to achieve results. For more information on Catalyze, please visit their website.

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As New Zealand’s leading independent property advisers, TwentyTwo works with leadership teams across a wide range of public sector and private sector organisations who own or lease property and premises to underpin their business operations.

They provide strategic advice and practical implementation support to help make more informed and robust decisions.

Over the last 26 years they've built a sound practice by disrupting the conventional thinking often applied to property and premises, by bringing a management lens to key decisions and an in depth understanding of both the private and public sectors.

Their expertise includes

  • Property Strategy
  • Private sector funding/procurement models (PPP)
  • Workplace Strategy
  • Capital Works Planning
  • Premises procurement, leasing and commercial advice
  • Feasibility Studies
  • Business Case Input
  • Master and Campus Planning
  • Project Reviews/IQA

For more information on Twenty Two, please see visit website.

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We are pleased to provide pro bono support for non profit organisations and those who support the community.

Our current sponsored organisations are;

Victim Support - providing emotional and practical support for victims of crime, trauma and suicide.

The New Zealand Harkness Fellowships Trust - The NZ Harkness Fellowships are intended to enable outstanding mid-career professionals in any field of study or vocation except health policy, to undertake a Fellowship programme which best suits their professional and personal objectives.

PMINZ - We were thrilled to sponsor the Public Sector Project of the Year award at the 2018 annual conference. And our congratulations to the Ministry of Education: Education Sector Logon Upgrade Project, who won the award.


Victim Support

Victim Support is an independent incorporated society that provides a free 24 / 7 community response to help victims of serious crime, trauma and suicide.

Their free service provides emotional and practical support, information, financial assistance, referral to other support services and advocacy for the rights of victims.

Victim Support make bold promises to our communities:

  • they will be there 24 / 7 to help as people deal with or aftermath of crime, trauma and suicide
  • they promise to make a positive difference to shattered lives
  • they promise that in times of trouble they will make sure people get the help they need to be safe, to find healing, and to navigate the justice system.

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PMINZ’s main purpose is advancing the practice, science, and profession of project management in a conscious and proactive manner. 

Specific purposes: 

  • To serve as New Zealand’s national project management association. 
  • To foster professionalism in the management of projects. 
  • To contribute to the quality and scope of project management. 
  • To stimulate appropriate application of project management for the benefit of the public. 
  • To provide a recognised forum for the free exchange of ideas, applications, and solutions to project management issues among members, and others interested and involved in project management. 
  • To identify and promote the fundamentals of project management and advance the body of knowledge for managing projects successfully. 
  • To collaborate with, and provide guidance to universities, other educational institutions and corporate entities on appropriate education, career and professional development at all levels of project management.
  • To provide a guiding influence in academic and industrial research in the field of project management. 
  • To advise other associations and organisations on matters related to project management. 
  • To support the formation and development of local branches and specific interest groups. 
  • To seek and foster domestic and international cooperation and contacts with other organisations, both public and private, which relate to project management and to collaborate in matters of common interest and benefit. 
  • To identify, develop, foster and maintain professional practices, ethical and accreditation standards and principles.

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Harkness Fellowships Trust

The Fellowships seek to reinforce New Zealand-United States’ links by enabling actual or potential leaders and opinion formers in New Zealand to benefit from new ideas, practices and new contacts in the US.

Previous New Zealand Harkness Fellows ( under the ‘old scheme’) have included managers in the public and private sectors, lawyers, policy analysts, economists, academics, journalists, social scientists, educators, artists, and central and local government officers. Many Harkness Fellows have gone on to reach the top of their chosen professions.

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