Skip to content

 Green Star Technical Clarification Rulings

Technical Clarifications for Green Star represent our answers to Technical Questions submitted by projects, and provide further guidance and reference to others. The list is regularly updated.

There are two types of Technical Clarifications listed in the table below:

General Clarifications

These are extensions to the guidance provided in the Submission Guidelines. They clarify and sometimes supersede the original Credit Criteria or 
Compliance Requirements. General Clarifications set precedent for future project teams to follow. Should a project team wish to apply a general clarification to its project, there is no requirement for further Technical Questions to be submitted. NZGBC Assessors will also use them as precedents to assess submissions.

Project Specific Clarifications

These are published as references for other projects but, unlike General Clarifications, they do not set precedent. They often relate to special 
situations where multiple prerequisites exist for a particular project and are less likely to reoccur to another project. Therefore, rulings set for Project Specific Clarifications are often conditional and will likely vary for other projects. Each project still needs to submit its own Technical Questions and provides evidence relating to its own building in order to have a similar ruling approved for that specific building. 

Should you wish to apply any Technical Clarification for legacy rating tools to your projects, please submit a Technical Question to the NZGBC to 
explain why and how it applies. You can download the Technical Question form here

Technical Question Title Clarification Type Tool Version Month Released Credit Name Sub-credit Name Amendment/Approved Ruling
CarboNZero for Building Operations General DABv1 September 2021 5 - Commitment to Performance Environmental Building Performance

Given that the CarboNZero for Building Operations certification for buildings requires energy and water efficiency intrinsically through buildings’ performance stages, it is acceptable for project teams to show commitment to the CarboNZero for Building Operations instead of a Green Star Performance rating to achieve the point for 5.1 Environmental Building Performance. This pathway may only be used for projects that have been registered for a CarboNZero certification or have shown formal commitment through formal agreements or policies.

Ductwork Components General DABv1, DABv1.1 August 2024 9 - Indoor Air Quality Ventilation System Attributes

All ductwork components (plenums etc.) are to be treated the same as ductwork, and therefore do not need to be cleaned if sealed throughout construction.

Fitout Logbook vs Facilities Mgmt System General DABv1, DABv1.1 May 2022 4 - Building Information Building Information
Retained Elements can be included in Credit 19 Life Cycle Impacts and Credit 21 Sustainable Products. General DABv1 October 2023 19 - Life Cycle Assessment/Impacts, 21 - Sustainable Products Sustainable Products, Life Cycle Impacts
Alternative Compliance Criteria General DABv1 July 2021 12 - Visual Comfort Views
REBRI Standard to Undertake Volume to Weight Conversion General DABv1 December 2020 22 - Construction and Demolition Waste Construction and Demolition Waste
All Products and Materials include in Sustainable Product Credit General DABv1 June 2021 21 - Sustainable Products Sustainable Products

The credit of Sustainable Products takes account of all the products and materials including buildings’ mechanical, hydraulic, transportation and electrical systems. Responsible and sustainable systems that meet transparency and sustainability requirements in the credit can contribute to achieved points.  

High Quality Staff Support General DABv1 October 2019 7 - Responsible Construction Practices High Quality Staff Support
Occupant Engagement Innovation Challenge General DABv1 April 2020 29 - Innovation Innovation Challenge
Relocation/remodelling of Existing Carpark (Credit 22) Project Specific DABv1 November 2020 22 - Construction and Demolition Waste Construction and Demolition Waste

The Assessor believe the relocation/ remodelling of the existing carpark arrangements is an integral part of the development approval for the project. Whilst the Assessor accepts the carpark relocation works may be undertaken as a separate ‘enabling works’ contract, these works are part of the campus redevelopment/ re-organisation and a key component of the project, as evidenced by the fact the design team is common to both the ‘enabling works’ and the proposed building project. The assessor therefore believes the Credits relating to contract works (Credits 7.1, 7.2, 7.3 Responsible Construction Practices and Credits 22.1, 22.2 Construction Waste) should apply to the enabling works contract as well as the main contract works.