A Collaborative, Insight-Driven Approach
We take the time to understand your project’s design intent, performance goals, and compliance needs. Our assessors work closely with you to ensure your NatHERS rating reflects not just numbers—but real-world efficiency and comfort.
From early-stage design reviews to final NatHERS certification, we’re here to support smarter decisions and better outcomes
Cost-effective compliance strategies
We help you achieve energy rating compliance efficiently, meeting standards while ensuring performance within budget
Design flexibility & optimization
We work with your plans to assess and suggest improvements for thermal performance while respecting and maintaining the original design intent.
Clear documentation for approvals
Receive well-structured, regulation-ready reports that streamline your NatHERS certification process.
Achieving Your Vision Starts with Smarter Design
A 7-Star energy rating under NatHERS (Nationwide House Energy Rating Scheme) reflects a home designed to minimize heating and cooling loads, delivering superior thermal comfort, lower energy bills and reduced environmental impact.
Under the current National Construction Code 2022 (NCC 2022), all new dwellings, whether standalone houses or apartments, must meet a minimum 7-Star rating for compliance.
The rating relies on modelling key elements such as building orientation, insulation levels, wall/roof/floor materials, glazing performance, shading and ventilation.
At Torple Enviro, we go beyond simply meeting the minimum. We work with you from early conceptual design to ensure the final home delivers peak thermal efficiency — creating a future-ready, sustainable, high-performance home.
What They Mean for Your Project
Why Energy Ratings Matter
When building or renovating in Australia, energy efficiency is a compliance requirement under the National Construction Code (NCC). One of the most common pathways is through a NatHERS (Nationwide House Energy Rating Scheme) assessment, which models your home’s heating and cooling performance using advanced software.
The outcome is expressed as a star rating from 0 to 10, reflecting how well the home design naturally maintains comfort without heavy reliance on artificial heating and cooling.
From NCC 2022, new residential projects are required to achieve a minimum 7-star NatHERS rating. Homes that meet this benchmark receive a NatHERS Certificate, often essential for council approvals and sustainability reporting (such as BESS Best Practice in Victoria).
If you’re planning extensions, additions, or upgrades, you may also need an updated assessment to remain compliant.
NatHERS Star Ratings Explained
Over 70% of Australian new constructions are assessed through NatHERS. Each star band indicates how energy efficient the home is—and directly impacts energy bills and comfort levels.
Here’s a quick breakdown:
- 0 Stars
Home is quite uncomfortable – too hot in summer and too cold in winter. It will require a lot of energy to heat and cool. - 5 Stars
Similar comfort level to homes commonly built between 2005 and 2011 in Victoria. - 7 Stars
The new minimum compliance standard under NCC 2022. A 7-star rated home uses around 20–25% less energy for heating and cooling compared to a 6-star home. - 10 Stars (Green Standard)
Home is very energy efficient. It will remain comfortable year-round, with limited, or no mechanical cooling or heating.
Which Types of Buildings Need a NatHERS Certificate?
Not every building requires a star rating, but most residential projects do. If you’re lodging plans with council or aiming for compliance, the following building classes may need an energy rating report under NCC 2022:
- Class 1a – Detached or Attached Homes
Examples: standalone houses, townhouses, terrace houses, row houses, villa units. - Class 2 – Multi-Residential Apartments
Buildings with two or more apartments must achieve a 7-star average across the development (each unit must meet at least 6 stars). - Class 4 – Residences Inside a Non-Residential Building
For example, a single apartment within a commercial or mixed-use building.
⚠️ NatHERS does not apply to Class 3 buildings (such as hotels). For more information on building classes, click here.
Why Aim Higher Than Minimum Compliance?
While 7 stars may be the required minimum, aiming for higher ratings means:
Lower energy bills year-round.
Greater indoor comfort without over-reliance on heating/cooling.
Increased property value and market appeal.
Need advice on your project’s compliance? Our team can guide you through the 7 Star Energy Rating certification process and ensure your design meets or exceeds requirements.
Achieving Your Vision Through
NatHERS Integration
Discovering Your Vision
We offer a personalized consultation to understand your goals for sustainable and energy-efficient building design. We’ll introduce how NatHERS (Nationwide House Energy Rating Scheme) can support your vision and outline our collaborative NatHERS assessment process.
Project Insights & Data Gathering
We collect detailed data about your building project—materials, layout, orientation, and climate zone—to perform a thorough NatHERS assessment. This step ensures we capture all elements that influence energy performance.
Tailored Energy Strategy
We craft a customized energy efficiency strategy based on NatHERS ratings. This plan balances compliance with regulatory standards and your personal sustainability goals, offering clear, actionable recommendations for optimal NatHERS star rating outcomes.
Execution & Ongoing Support
We guide you through implementing the strategy and provide continuous support. From documentation to performance tracking, we ensure your project stays aligned with NatHERS benchmarks and your long-term vision.
Have some Questions
How do I start the NatHERS certification process?
Simply book a consultation with our team. We’ll guide you through the steps and help you understand what’s needed for your assessment.
What’s included in the cost of a NatHERS assessment?
Our pricing covers the full assessment, certificate issuance, and expert advice on improving your rating if needed.
What star rating should I aim for?
Under the new National Construction Code (NCC 2022), all newly built homes must achieve a 7-star energy rating. While this requirement is national, each state will roll it out on different timelines.
Your home’s energy rating reflects its natural comfort and the extent of additional heating or cooling needed throughout the year. A higher star rating means a more comfortable, environmentally friendly home with lower energy bills.
What if my current design doesn’t meet the required rating?
No worries! We’ll suggest practical design tweaks to help you meet or exceed the target rating without compromising your vision.
Can I still get a rating if I change my plans mid-way?
Yes, we can reassess your updated plans and provide a revised certificate if needed.
Why does a higher NatHERS rating matter?
Higher ratings mean better thermal comfort, lower energy use, and long-term savings—plus it’s great for the environment.
Is it possible to achieve an 8-star rating?
Absolutely. With the right design strategies and materials, we can help you get there.
Will the rating affect how comfortable my home feels?
Yes! NatHERS ratings are based on how well your home maintains a comfortable temperature year-round, so a higher rating usually means a more pleasant living experience.
How long does the whole process take?
Depending on the size of the home and the documentation available, the timeframe will vary. Please reach out to us to talk about your goals and plans.
Can you help with compliance for BASIX or other local regulations?
Definitely. We ensure your NatHERS rating aligns with broader compliance requirements like BASIX, helping you stay on track with approvals.
Hear From Those We've Partnered With
We take pride in delivering thoughtful, sustainable solutions—and our clients say it best.
“The Torple team has been fantastic over the years in providing detailed energy assessments. Specifically, in being pro-active in providing solutions to star rating shortfalls in an easy manner. I would highly recommend Torple due to their low fuss approach to every project they undertake”
“I have worked with Torple for many years on both residential and commercial projects and they play a valuable role in my business in both design development and the development approval process. They are prompt, efficient and good communicators and provide up-to-date information and advice.”
“Professional, efficient and easy to deal with. The team at Torple constantly deliver accurate reports quickly and provide helpful guidance throughout the process in an ever evolving space. Highly recommend for reliable energy rating assessments”.
“We have been using Torple for 18 Months now and have found them fantastic to deal with. They are solution driven and are always willing to work with us to produce the best outcome for our clients. We look forward to working with Torple for future projects & developments.”
“We love working with Torple to ensure our designs are compliant with NCC requirements for both Residential and Commercial Buildings. We appreciate their in-depth knowledge to help us achieve compliance with Section J requirements. They are highly skilled in their field, easy to work with and a great asset to our company.”
