Green Star FAQs

Yes, a maximum of 5% of the energy or water consumption data may be estimated in the total 12 months of continuous data submitted, where there are gaps or bills missing for the 12 months of energy and/or water consumption provided in the submission.  The data for the unrecorded or missing consumption is to calculated by interpolating between adjacent bills or...

Yes. Green Star Accredited Professionals (GSAPs) who have a valid accreditation under the Green Star Performance v2 GSAP program may use this certification when targeting Credit 1 - Green Star Accredited Professional for the Green Star - Performance v1.2 rating tool. 

The relevant certification period is from the date the project was initially certified until the date the recertification submission was lodged. The GBCA recommends a Technical Question be submitted should the GSAP accreditation period not align with the above dates.

No, all apartments are not required to be tested for air-tightness in Green Star. Project teams may test a minimum of 10 dwelling units or 10% of the total number of dwelling units, whichever is greater as sample units to satisfy the Testing Area Requirements. The sample units selected must include: A representative of the lower-most, upper-most, and intermediate floors; A representative of the...

The GBCA clarifies that a project's total contract value refers to the cost to complete the works for the entire project including site works. Demolition works, consultant fees and works outside the scope of the Green Star project boundary are to be excluded.