Skip to content

Changes to the NCC are here....

by Jeremy Thomason on

As a homeowner, you might be interested to know that the National Construction Code (NCC) in Australia has recently undergone some significant changes. These changes aim to improve the safety, sustainability, and livability of residential buildings, which will directly impact the quality of your home. In this blog post, we'll outline the key changes to the NCC that will affect your home and what they mean for you.

New Waterproofing Requirements

One of the significant changes introduced to the NCC is the revised requirements for waterproofing in residential buildings. From May 2022, all new homes must comply with the updated waterproofing standards, which are designed to prevent water damage in wet areas of the home, such as bathrooms, kitchens, and laundries.

Under the new standards, builders must use waterproofing membranes that meet specific performance requirements, such as durability and compatibility with other building materials. The updated requirements aim to reduce the incidence of water damage, which can cause significant structural damage and create the conditions for the growth of mold and mildew. By improving the waterproofing standards for residential buildings, the NCC aims to create more durable and long-lasting homes.

New Ventilation Requirements

Another significant change to residential construction is the introduction of new ventilation requirements. From May 2022, all new homes must be designed and constructed to meet minimum ventilation standards. The new ventilation standards mandate the provision of adequate ventilation in all habitable rooms and wet areas.

This requirement aims to improve indoor air quality and reduce the risk of respiratory health problems. The updated standards specify the minimum airflow rates that must be achieved, based on the size and use of each room. By ensuring proper ventilation, the NCC aims to create healthier and more comfortable living environments for homeowners.

Higher Energy Efficiency Standards

In addition to the above changes, the NCC has also introduced higher energy efficiency standards for new homes. From May 2022, all new homes must meet a minimum 7-star energy efficiency rating. This means that they must be designed and constructed to reduce energy consumption and greenhouse gas emissions.

The new energy efficiency standards aim to make homes more sustainable and reduce energy bills for homeowners. By reducing the amount of energy required to heat and cool homes, the NCC aims to reduce the environmental impact of residential buildings.


The changes to the NCC will impact all new residential buildings, including your home if you're planning to build or renovate. As a homeowner, it's important to be aware of these changes and ensure that your builder is complying with the new requirements. The new waterproofing and ventilation standards aim to create more durable, healthier, and more comfortable homes, while the higher energy efficiency standards aim to reduce energy bills and the environmental impact of residential buildings. By working together, homeowners and builders can create better homes that benefit everyone.