DCP 2012 3.6.1 -8:
“Applications for developments involving alterations, additions and refurbishments to existing office premises where the estimated cost of works is over $5 million, & contains a net lettable area of 1,000sqm or more, are to be submitted with documentation confirming that the building will be capable of supporting a Base Building National Australian Built Environment Rating System (NABERS) Energy Commitment Agreement of 5 stars with the NSW Office and Environment Heritage. Such an agreement is to be entered into prior to any construction certificate being issued for the approved development. Notwithstanding, a Base Building National Australian Built Environment Rating System (NABERS) Energy Commitment Agreement of 5 stars is not required where the consent authority is satisfied that: the upgrade works would negatively impact on significant heritage fabric or the heritage significance of a listed heritage item, or the costs associated with the energy efficiency upgrade works are unreasonable when compared to the overall estimated cost of works for the alterations, additions and refurbishment.”
For any other commercial buildings (other than office), there are no mandatory minimum NABERS star rating requirements. However, other provisions under Section 3.6 of DCP 2012 may still apply.