Image of a house temperature monitor showing 14 degrees celcius, and the text heading "the true cost of a nathers rating"

When you design and build or renovate a home in Australia you’ll generally need a NatHERS assessment.  Its easy when you’re going through the process to focus on just getting all the pieces of paper you need for approval but your NatHERS assessment has the ability to change how you use and pay for energy in your completed home. 

Undertaking this process early and with experts allows you to make informed decisions about how to build or renovate to ensure your home is comfortable to live in, resilient and cheap to run.

We want you to think differently. A NatHERS rating has the ability to change lives. Yours, if it’s for your own home, or your client’s, if you’re a building or design professional. Although we’re talking about a NatHERS assessment in this article, the same thinking applies no matter your energy efficiency compliance pathway: 6 stars, Deemed-To-Satisfy, Performance Solution, even PassiveHouse. Don’t just think about the piece of paper, combine it with getting great advice.

There are so many decisions to make when designing and building a home, which can change the comfort and cost of your build:

  • Is your design optimal for your block?
  • Should you resize that west window?
  • What’s the optimal construction method for your walls?
  • Will your home be free from mould?
  • How should you heat or cool it?
  • What is the best size solar system?

The Powerhaus team regularly visit newly built homes where the NatHERs rating was just a piece of paper, and the homeowner is cold and confused.

Building a home is a huge investment. You want to get the important things right. If you get a lightshade wrong, that can be changed–the construction of your walls or slab can’t.

Image of the Powerhaus team assessing a cold house, looking at a phone. With a blower door set up in the background.
The Powerhaus team visit a brand-new house in Canberra, to help assess why it was so cold. Although it had a 7 star rating, they didn’t get great advice at the start of their build–just a low-cost certificate. Although we helped make their house more comfortable, we were limited in the changes we could make.

When looking at the cost of a NatHERs rating, it’s not just about the certificate: it’s about getting the best advice for your design to ensure you make the best decisions.

Your NatHERS rating isn’t a cost, it’s an investment

Use your NatHERS rating to ensure your house is comfortable, free from bills and optimised for the future–then sit back and enjoy the benefits.

Australian’s are often confused about why their houses are uncomfortable all the time–but you don’t have to be. Getting good energy efficiency advice about the build of your home is a huge opportunity to invest in your whole life:

  • Certainty that your home is healthy
  • Lower bill stress with zero or low energy bills for life
  • Feel safe during climate extremes
  • Confidence that you have spent your money wisely
  • Know that your main asset is built right, with no hidden moisture

How much does a NatHERS certificate cost?

NatHERS ratings can cost anywhere between $400-$1500, depending on the level of service, the experience of the team and the quality of the advice.

What you get for a lowest cost NatHERS certificate

  • A piece of paper
  • Possibility spending more money on things you may not need or regretting your decisions down the track

When you opt for a lower cost rating, you may get your compliance sorted–but you’re unlikely to get the benefits of working closely with an experienced assessor and the actual energy efficiency data for your home. If you are confident about your design, this might be enough for you.

Image of a sample NatHERS assessment certificate, showing the star rating as 7 and a whole of home score.
A NatHERS certificate won’t help you make great decisions about your home.

What you get when engaging an energy efficiency expert for your NatHERS rating and advice

What you get when paying for expert advice: the opportunity to make your design a truely comfortable home, zero energy bills, climate positive, healthy and prepared for weather extremes.

We’re confident that paying for higher quality advice will have a return on investment of 100%: the cost of getting good advice will result in decisions you make about your home energy efficiency that pay back within one year (or likely, one winter bill cycle!).

We’re also confident that not investing in good advice can lead to regret that lasts a long time.

Working with Powerhaus is an investment in your project. Access our expert advice, our cutting-edge home energy efficiency design app and build a comfortable, light-filled home.

How Powerhaus can help with your NatHERS rating

If you’re looking for a NatHERS assessment that’s more than just a piece of paper, Powerhaus offers a service designed to bring clarity, actionable insights, and real value to your project.

But don’t take our word for it, here’s some recent feedback from our clients:

When you’re ready to elevate your project, get in touch with us. We’re here to help you design comfortable, energy-efficient spaces that exceed expectations.

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