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
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Technical Question Title | Clarification Type | Tool Version | Month Released | Credit Name | Sub-credit Name | Amendment/Approved Ruling |
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Industrial Warehouses using the standard AS/NZS 4282:2019 | General | DABv1, DABv1.1 | April 2023 | 26 - Light Pollution | Light Pollution to Neighbouring Bodies |
For industrial warehouse projects located within an industrial estate, where the site boundary is shared with an industrial or commercial development, compliance with the Light Pollution to Neighbouring Bodies may be demonstrated by meeting the standard AS/NZS 4282:2019 Control of the obtrusive effects of outdoor lighting. In this circumstance, the credit requirement to meet the above standard at the site boundary does not apply. If the adjacent lot to the project is a residence (house, apartment, hotel, hospital or aged care), an environmentally sensitive area or the zoning is unknown, this approach may not be applied and requirements of the credit for AS/NZS 4282:2019 must be met at the boundary of the site. It is expected that the designers of the outdoor lighting should limit the obtrusive effects as far as practicable whilst meeting the safety requirements of the outdoor working space i.e. ensure that all lights have a high mounting height to provide controlled light distribution in a downward direction (i.e. narrower beam). |
Healthcare Guidance - Clinical Requirements | General | DABv1, DABv1.1 | August 2022 | 11 - Lighting Comfort | Minimum Lighting Comfort |
The Healthcare Guidance does not explicitly allow for specialist medical light fittings to be excluded from this credit. However, the guidance does say that “where a space has a clinical functional requirement, which contradicts the requirements listed in either the Submission Guidelines or the Healthcare Guidance documents, the clinical requirement shall always take precedence. Clinical spaces are considered Not Applicable within most of the Indoor Environment Quality category”. Specialist medical light fittings are part of the clinical requirements, therefore can be excluded from assessment for this credit. |
Credit 17B.4 Active transport points | General | INTv1, DABv1.1, DABv1 | May 2025 | 17 - Sustainable Transport | Active Transport Facilities |
Points for credit 17B.4 can be awarded independantly of each other. There is not a requirement to achieve the point for providing cycling facilities to the building’s regular occupants as a prerequisite for the the point to be awarded for providing cycling facilities to the building’s visitors. |
Text Correction | DABv1.1 | May 2025 | 26 - Light Pollution | Light Pollution to Night Sky |
The second bullet point of specified reduction option ‘26.2B Control of Direct Illuminance’ is amended to read the following:
“0.1Lux to 4.5 metres beyond the site into the night sky…”
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Zero Car Parking Spaces | DABv1.1, DABv1 | May 2025 | 17 - Sustainable Transport | Sustainable Transport Prescriptive Pathway |
The NZGBC recognises that Policy 11 of the National Policy Statement on Urban Development 2020 has eliminated minimum car parking requirements to be set by all local authorities.
With a zero car parking space minimum now being possible, a further reduction in car parking spaces from this new baseline standard would therefore no longer be achievable. Note: this zero park minimum excludes any accessible car parking requirements for a building. Credit 17B.2’s standard has been exceeded and is therefore ‘Not Applicable’ to all submissions.
This TC also retroactively applies to all new submissions made after the NPS UD came into effect on 20 August 2020.
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Enviromark Diamond | Green Star Buildings NZ | May 2025 | 2 - Responsible Construction |
The Enviromark Diamond framework is accepted as a compliant Environmental Management System for projects valued at over $25 million. |
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Prescriptive Definitions for energy and water metering | Green Star Buildings NZ | May 2025 | 3 - Verification and Handover |
There are no prescriptive definitions for common uses, major uses and major sources for energy and water metering defined in Green Star Buildings. Project teams should justify their definition in the submission.
The following guidance, adapted from Green Star - Design and As Built is provided to help project teams identify these uses and sources.
Metering is to be provided to allow for monitoring of the relevant areas or functions of the project. In most cases floor-by-floor metering will suffice if the entire floor has a single use. If a floor has multiple uses, the different uses shall be metered e.g. in a floor be composed of office space and a seminar room, both spaces shall be separately sub-metered. If a floor has multiple tenants or owners, each tenancy or property shall also be separately sub-metered.
Where an energy load for a single item exceeds 5% of the total energy use for the building, or 100kW, it should be independently metered. Supplementary equipment can also be installed on the same measured circuit as the major use item. However, the total combined energy use of any systems connected to the major use item should not contribute more than 10kVA to the overall energy use.
Where a common water use consumes 10% of the project’s water use, these should be independently metered.
The following examples are provided as guidance:
Project teams may install metering above and beyond the examples given above.
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Decorative Lighting | Green Star Buildings NZ, DABv1, DABv1.1 | May 2025 | 11 - Lighting Comfort | General Illuminance and Glare Reduction, Minimum Lighting Comfort |
Projects may exclude decorative lighting from the following criteria where the decorative lighting is not the primary source of lighting in the room, and each regularly occupied area is supplied with a primary light source (e.g. downlights) that meets all criteria requirements:
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Location of Changing Facilities | Green Star Buildings NZ | May 2025 | 27 - Movement and Place |
Changing Facilities (end of trip) may be provided on a different floor from bike storage if they are easily accessible and meet all other requirements.
End-of-trip facilities, including changing rooms, showers, and lockers, must be provided in a dedicated facility within easy access of the bike storage. This is to meet the credit intent to encourage occupants and users to use active, low carbon and public transport options instead of private vehicles.
Some examples of what can and can't be accepted:
Acceptable
Not Acceptable
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Diverse Lead Teams | Green Star Buildings NZ | May 2025 | 31 - Inclusive Construction Practices |
NZGBC clarifies that the intent of the requirement, 'empower a diverse lead team to manage these policies on-site' in the Inclusive Construction Practices credit in Green Star Buildings is to ensure that the on-site lead team are equipped to implement the discrimination, racism, and bullying policies appropriately.
Therefore, to demonstrate this, projects may show that the site leadership team is proactively implementing these policies on site. The make-up of the site leadership team is not required to be demonstrated to be diverse themselves but are shown to be able to enforce the policies appropriately.
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