Whole of Home Assessments

What is a Whole of Home Report?

Whole of Home Reports are a relatively new requirement that has been introduced by the 2022 National Construction Code(2022 NCC) and will be required for residential projects designed after 1st May 2024. The 2022 NCC introduces a household energy budget which aims to limit the amount of energy that is taken from the electricity grid by a new home. The Whole of Home assessment considers the following:

Type of Heating and Cooling Equipment
Type of hot water system
Lighting
Swimming pools and spas
Onsite renewable energy sources (solar PV systems)

Following the assessment, a score of 60 out of 100 is required to be achieved with a score of 100 out of 100 a theoretical carbon neutral design.

If a design has relatively high energy use such as low efficiency heating and cooling, large pools and the use of less efficient hot water systems it is unlikely that a score of 60 out of 100 will be achieved. In this instance, the use of more efficient appliances and solar PV systems can be used to increase the score.

Why and when do I need a Whole of Home Report

Whole of Home Reports are a requirement of the 2022 National Construction Code and will be required for all residential projects designed after 1st May 2024 in all states except for NSW (in NSW, Basix replaces the Whole of Home).

What else can a Whole of Home Report be called

Whole of Home Reports can go by a variety of names such as:

How do I get a Whole of Home Report completed

Once the building permit drawings have been prepared and shared, the Green Rate Team will review and provide a detailed quotation. Once approved, the Green Rate Team will begin the assessment utilizing the following steps:

Review of provided plans
Model the design using Home Energy Rating Software (WoH application)
Preliminary Whole of Home report issued to the client for review and comment
Report finalisation

Why does getting a good quality Whole of Home Report matter

Obtaining a good quality Whole of Home Report will ensure that the solutions selected are practical, cost effective and locally available.