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6 Star Energy Rating

We do everything in-house

A 6 Star Energy Rating is a measurement of the heating and cooling loads of a dwelling to determine how much energy is required per year to keep the occupants comfortable. All of our work is completed by our in-house team located in Melbourne, Victoria.

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Volume Builders

Cost-effective and efficient reports are key when working with the volume builder market. We have optimised our automation to be able to produce fast energy rating report and with the ability to pass the savings back to our clients. Our back end system also keeps clients up to date with where the project is. We currently have the capacity to produce 100 reports a week.

For more complex sites/design, having the CAD files will also help to model critical information.

The Process

passivenergy quote timeline

6 Star Energy Rating Reports For Extensions & Alterations

The size of the extension and the internal works dictate how we achieve compliance.

If the extension and the internal works are over 50%, then the whole building will need to achieve 6 stars. This is because regulation 233 of the building regulations 2018 stipulates that any extension work over the last 3 years that is more than 50% of the original volume, the whole code applies.

So, the whole building must achieve a 6-star energy rating report.

We will treat the existing and alteration works together as a “new” building and provide a 6-star energy rating report.

The client will need to then apply for partial compliance requesting exemption for the existing walls, windows and flooring due to the cost to bring these up to the current 6 star code, the argument being it will cost far more in construction costs to perform these upgrades then the potential in energy savings the owners may receive throughout the life of the home.

If the extension and internal works are under 50%, then a two rating method can be used. This method enables us to perform a 6-star energy rating on the existing dwelling first with all the existing conditions added, with an average result of 1.5-3.5 stars can be expected. Then we perform another 6-star energy rating with the proposed extension also.

The proposed volume needs to be 6 stars, but this is averaged out with the existing dwelling results.

This method is often more cost effective as you only need to concentrate on the proposed extension and the existing roof cavity.


Suite 60, Level 2, UL40, 1341 Dandenong Road, Chadstone VIC 3148

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Telephone: (03) 8769 5619

As a minimum, we need:

  • One overall dimension on each floor

  • North Point

  • All window and door sizes

  • Building materials

  • Construction types

  • Floor coverings

  • Exhaust fan locations

  • Exhaust fan locations

  • Neighbouring information

6 Star Energy Rating Reports Are Mandatory For Victorians With All New Dwellings, Apartments & Extensions

In May 2011, an obligatory 6-star vitality rating was required before any structure grants were issued. Presently, the reason I utilize the words ‘evaluated’ and ‘hypothetical’ in my talks is on the grounds that dissimilar to white merchandise or gadgets that experience a great many long periods of R&D and testing to work out their genuine exhibition and vitality utilizations, homes have a 6-star vitality rating issued preceding the beginning of development. In a perfect world, with an able manufacturer who checks to guarantee protection has been introduced accurately and windows have been coordinated what is expressed in the vitality rating report, you could without a doubt live in an agreeable 6-star home.

As indicated by a report issued by the Department of Environment, Water, Heritage and Arts, warming and cooling represents 40% of the general vitality use in our homes by and large inside Australia. What the 6-star vitality rating plans to accomplish is better techniques for keeping the glow inside amid winter, and keeping it out in summer, with the expectation that this will decrease the dependence on the measure of vitality required to accomplish an agreeable home.

What the 6-star vitality necessity likewise plans to accomplish is better idea in the structure procedure to all the more likely use sunlight based latent structure standards, a strategy named by utilizing that lovely warm winter sun that sits low enough in the sky so it can infiltrate through those north-bound living territories where you invest the vast majority of your time – you don’t pay for the sun – that is free vitality!

Frequently Asked Questions For 6 Star Energy Ratings

We will have all preliminary energy rating report back within 72 hours for single dwellings and dual occupancy. This ensures that your projects progress steadily. We are available to meet urgent deadlines.

The best time to do an energy rating is in the initial design stage once the design is completed. Once the results are calculated, we can analyze the weaknesses of a design, zone by zone and offer recommendations to improve the overall energy rating. Completing a 6 Star Energy Rating at the end of the project gives you limited options to what can be done to get the dwelling up to 6 stars if the house performs poorly.

It is possible to achieve a 6-star energy rating without the need for double glazed windows and upgraded insulation if good passive design principles have been implemented, and doing the energy rating at the design stage can assist with reducing the building costs. Read our passive design consulting page for more information.

A home that has not considered good passive design could have the potential to add significant costs to the build by requiring expensive double glazing windows and doors, and insulation. By considering the orientation of the site, and designing the layout appropriately, with careful consideration to a window location, size and shading, a 6 star home are achievable with minimal additional costs.