Ammache ArchitectsAmmache Architects

How To Achieve 6 Star Energy Rating

  • Share This Article

If you are putting up a new house or you are finalising on additions and alterations to an existing property, chances are that you’ve heard about 6 Star Energy Rating. As indicated in the National Construction Code (formerly the Building the Codes of Australia or BCA), all Australian local government authorities require building owners to meet certain energy efficiency regulations before qualifying for a building permit. Here is how to meet the 6 Star Energy Ratings for homes.

  1. Use high rating appliances 

Your home’s water and energy consumption will be affected by the kind of appliances installed in it, for example, shower head, hot water system, lighting, and cooling and heating systems. For this reason, it’s important that you choose only higher-rated appliances. Such devices will avoid a situation where energy or water is wasted.

  1. Consider the location of the home and its orientation

When designing a building, it is important that it takes into account the neighbouring buildings. For instance, if a home is encircled by other buildings, you need to ensure that you adjust the architectural designs to give the property maximum solar exposure. Failure to do this might mean that a house uses too much energy as a result of over-shading from the nearby buildings.


  1. Ensure proper designs of windows


The double glaze is the best since it has improved thermal performances compared to single glazing. Besides, an architect should make an effort of maximising north-facing windows to keep the internal environment warm to reduce heating overload. But if the eastward and westward windows are too big, this might make the home overheat especially in the morning when the sun is raising or lose heat all the heat when the sun sets in the evening.


  1. Insulation of building materials 


Building materials that are insulated often provide better thermal performance. This means you should consider increasing the insulation of the ceiling to R6 and that of external walls to be around R2. 


It is going to be more difficult to attain a nice star rating if you are building a bigger home. This is due to the fact that when a home is bigger, it will require more heating and cooling appliances to offer comfort for larger internal spaces. Therefore, if you are looking to build a bigger home, you need to know that it’s going to be more expensive to achieve 6-star ratings.


Seal doors, windows, vents, and exhaust fans


Sealing doors, windows, exhaust fans, and vents, is sure to increase the property value and at the same time provide a much better thermal performance. This is because it will prevent cooled air or heated air from escaping from the gaps between ceiling vents and also the gaps in the windows.



In most Australian states, the minimum requirement before you get a building permit is a NatHERS 6-star energy rating. The rating is important in helping people to understand the amount of energy their home is using for cooling and heating, so they make smart choices and save on annual energy bills.

Leave a Comment


Do You Need To Hire An Architect For Your Bathroom Renovation?

WeChat Us Now