When should an energy efficiency consultant be involved in home design?

Early, before the design is finalised and before approval documents are lodged. NatHERS states that ratings depend on the home's design, materials, climate and location, so changes to orientation, windows, insulation or materials after the rating can mean it must be reassessed. Ask the designer to involve the assessor at concept stage, and ask the assessor to confirm the requirement for your state, because each state adopts the National Construction Code on its own timetable.

In MyBuildHub: add the energy assessment as a Task before approval lodgement, and re-check it whenever you record a design variation.

Check yourself: NatHERS, ABCB state and territory adoption, and your certifier.

General information only. It is not legal, financial or professional advice and may not apply to your project. Confirm requirements with your regulator, your certifier or a lawyer before acting.