Brighton Beach Luxury Home
A high-end residential project in Brighton Beach, NSW, demonstrating how smart, whole-of-building design strategies can achieve a 7-Star NatHERS rating — without relying on costly glazing upgrades.
Project Details
- Location: Brighton Beach, NSW
- Project Type: Custom residential dwelling
- Floor Area: 400m²+
- Services: BASIX Certification + NatHERS Assessment
- Rating Achieved: 7-Star NatHERS
Project Overview
This high-end residential project in Brighton Beach, NSW showcases how expert energy consulting can align with ambitious architectural design. The home was designed around natural light, openness, and seamless indoor-outdoor living, with extensive glazing and contemporary architectural features throughout.
While visually striking, large expanses of glass often create real challenges when it comes to meeting Australian energy compliance standards such as BASIX and NatHERS. Ecomaxhomes was engaged to certify the design and find a compliance pathway that protected the architect’s vision.
The Challenge
The brief was clear from the outset:
- Maintain the architect’s vision of large windows and open-plan living
- Achieve a 7-Star NatHERS rating
- Avoid reliance on expensive solutions like double glazing or thermally broken window frames
In many Sydney and NSW projects, high glazing ratios significantly increase heat gain in summer and heat loss in winter, making compliance difficult without costly glazing upgrades. The client wanted a smarter, more cost-effective solution that didn’t compromise on design.
What Does a 7-Star NatHERS Rating Actually Mean?
The Nationwide House Energy Rating Scheme (NatHERS) rates a home’s thermal performance on a scale of 0 to 10 stars, based on how much heating and cooling energy it’s likely to need to stay comfortable year-round. Since October 2023, new homes across most of Australia — including NSW — must meet a minimum 7-Star NatHERS rating under the National Construction Code (NCC 2022), alongside a new whole-of-home energy budget.
A 7-Star rating means:
- The home requires substantially less energy for heating and cooling than a 6-star equivalent
- The building envelope (walls, roof, floor, glazing) is doing the bulk of the work to keep the home comfortable, reducing reliance on mechanical heating and cooling
- Lower ongoing energy bills for the homeowner
- A genuinely more comfortable home across all four seasons, not just a compliance number
For architecturally ambitious homes with large glazed areas — like this Brighton Beach project — reaching 7 stars is harder than on a standard project, because glazing is typically the weakest thermal element in a building envelope. That’s exactly why the strategy below focused on the whole building system rather than the glazing alone.
Our Approach
Rather than defaulting to expensive glazing upgrades, the Ecomaxhomes team implemented a performance-driven, whole-of-building strategy that improved the overall thermal envelope.
01.
Enhanced Thermal Insulation
Insulation was upgraded across all major building elements:
- External walls
- Roof and ceiling
- Flooring systems
This significantly reduced unwanted heat transfer and improved indoor thermal stability throughout the year, cutting the load that the glazing would otherwise place on the rating.
02.
Alpha Flooring System Implementation
An advanced Alpha flooring system was incorporated to further control heat transfer through the slab. Benefits included:
- Reduced heat loss through the floor
- Improved thermal comfort underfoot and throughout living spaces
- Better overall energy performance, contributing meaningfully to the final star rating
03.
External Shading Design
Strategic external shading was introduced to control solar heat gain, particularly during Sydney’s hot summers, including:
- Carefully positioned eaves and overhangs
- Shading elements aligned to each window’s specific orientation
This let natural light in while blocking the excess summer heat gain that large glazing typically causes.
04.
Skylight Diffusers
To maintain brightness without overheating interior spaces, skylight diffusers were installed. These helped:
- Minimise direct solar heat gain through the roof
- Maintain soft, even daylight distribution through the home
- Enhance occupant comfort in the rooms below
05.
Optimised Internal Zoning
Internal layout zoning was improved to maximise thermal efficiency:
- Separation of conditioned and non-conditioned areas
- Better airflow management throughout the plan
- Reduced energy load on HVAC systems as a result
The Result
- Achieved 7-Star NatHERS compliance
- Preserved the original architectural design in full
- Eliminated the need for costly double glazing
- Delivered a cost-effective, high-performance outcome for the client
This project demonstrates that energy efficiency doesn’t have to come at the expense of design — or budget.
Key Features
Even homes with large glazing areas can achieve high NatHERS ratings through:
- Smart insulation strategies
- Effective, orientation-specific shading design
- Careful material and system selection (like the Alpha flooring system)
By focusing on the entire building system rather than a single element, better outcomes are achievable — both technically and financially.
Frequently Asked Questions
Can a home with lots of glazing still achieve 7 stars?
Yes. As this Brighton Beach project shows, large glazed areas can be offset with a stronger overall building envelope — insulation, shading, flooring systems, and zoning — without resorting to expensive double glazing.
Is double glazing always required for 7-Star NatHERS compliance?
No. Double glazing is one option, but it isn’t always the most cost-effective. A whole-of-building approach can often achieve the same star rating at a lower cost.
What's the difference between NatHERS and BASIX?
NatHERS rates a home’s thermal (heating/cooling) performance on a 0–10 star scale. BASIX is the NSW planning requirement that also considers water and overall energy use for development approval. Most NSW homes need to satisfy both.
Do I need a 7-Star rating for my project?
Since October 2023, new homes in most of NSW require a minimum 7-Star NatHERS rating under NCC 2022, plus a whole-of-home energy budget. Requirements can vary by council and project type — get a free quote and we’ll confirm what applies to your project.
Why Choose EcoMaxHomes?
- Deep expertise in BASIX and NatHERS compliance across NSW
- Proven ability to balance architectural design and energy performance
- Cost-effective solutions tailored to each project
- Fast turnaround times for approvals
Ready to Start Your Project?
If you’re planning a custom home in Sydney or NSW and want to achieve high energy performance without unnecessary costs, Ecomaxhomes can help.
Our team will help you meet compliance requirements while preserving your design vision.