As the largest voluntary and truly holistic rating system for buildings, fitouts and communities in New Zealand, Green Star is regularly reviewed and challenged to give our members and their clients the confidence that they are working to the highest possible standards for sustainability.

As a not for profit established by the building and construction industry, we draw on the experience and expertise of our members who have been been selected to form a governance framework to:

  • Provide specialist technical advice related to Green Star or other matters
  • Assist with the development and review of thought leadership papers in line with our vision and strategy
  • Evaluate the views of stakeholders as submitted through the stakeholder consultation process

Central to this work is our focus on carbon and decarbonising the built environment. Our advisors will consider the impact of carbon at each stage of the building lifecycle including operational carbon, embodied carbon, energy reduction and the role of transport, e-vehicles, waste reduction, and the circular economy in supporting resilient communities.

How their reporting lines work with NZGBC and our Board is best outlined as: 

The role of the Green Star Advisory Committee

Chaired by Simon Wilson of RDT Pacific, the Green Star Advisory Committee members are sustainability leaders with experience in rating systems and the role of independent certification in driving change. They hold senior positions and have an understanding of the economic, social and environmental drivers that affect the adoption of sustainable building practices.

The Green Star Advisory Committee (GSAC) works across the Expert Reference Panels (ERPs) to consolidate recommendations for the NZGBC Leadership Team and Board on all matters relating to the development of Green Star. In doing so, they are committed to ensuring that the Green Star rating system remains rigorous, market relevant, and valued by industry.

The GSAC committee members are:

Kirk Archibald

Auckland Council

Nick Aslop

Green Building Council of Australia

Saatyesh Bhana

Argosy Property

Jason Happy

Kiwi Property Group

Paul Jurasovich


Mark Sinclair

Cooper and Company

Phil Smith

Collingridge & Smith Architects (UK) Limited

Kristen Webster

Eke Panuku Development Auckland

Simon Wilson

RDT Pacific

Debbie Wilson

Ministry of Health

Tanya SyddallUniversity of Otago


The role of Expert Reference Panels

Expert Reference Panels assist with a defined topic of engagement. Panellists are invited by NZGBC but may also be nominated by themselves or via other members.

Expert Reference Panel – Energy and Carbon in Operations

Ben Masters

BECA Limited

Patrick Arnold

eCubed Ltd

Anthony Calderone

Mott MacDonald New Zealand Ltd

Jason Quinn

COR Associates Ltd

Expert Reference Panel – Health & Wellbeing

Hayley Koerbin

Norman Disney & Young

Tricia Love

Tricia Love Consultants Ltd

Ella Osborne

eCubed Limited

Scott Smith

BECA Limited

Warner Brunton

Mott MacDonald New Zealand Ltd

Expert Reference Panel – Products & Materials and Embodied Carbon

Ralf Kessel

Concrete NZ Inc

Alex Reiche

EnviroSpec Ltd

Jeff Vickers


Steve Aschebrok


Nick Carman

Mott MacDonald New Zealand Ltd

Nick Collins

Metals New Zealand

Alec Couchman

Brewer Davidson Ltd

David Dowdell

BRANZ Limited

Expert Refrence Panel – Ecology & Emissions

Andrea Jarvis

Holmes Consulting LP

Cameron McDonald

Morphum Environmental Ltd

Tessa Meyer

Ministry for Primary Industries

Robin Mitchell

The Biodiversity Consultancy

Darren Tiddy


Navin Weeraratne

Awa Environmental

Caleb Clarke

Morphum Environmental Ltd

For more information on the governance structure, or to discuss your expression of interest, please contact Brad Crowley at