As Passive House designers in Australia, we create healthy, high-performance homes that respond to climate, comfort and long-term building performance. The shift toward sustainable architecture is no longer a niche preference but a fundamental requirement for modern living. We specialize in sustainable and healthy building design, using one of the world’s most stringent energy efficient design standards to inform our designs relative to circumstances and budgets. Our belief is that a home should primarily ‘live well’, yet touch the earth lightly and inspire through design. (About Us Sustainable Home)
Why Passive House Design Matters
In a changing world, disrupted by climate change, disease, economic uncertainty and anxiety, the one constant refuge is home. We spend over 90% of our time indoors, and with more work time now at home instead of our workplaces, our well-being, comfort, health and the way we touch the earth at home now take on even greater significance. Understanding that current building methodologies will not survive the changes required to meet the needs of healthy, comfortable, efficient homes demanded by you, the home owner, or meet the global energy targets set by Governments the world over, we asked ourselves what will the ‘new normal’ look like in building thinking in 10 years time. (Passive House Blog Australia)
We researched many models to find global best practice. The design principles needed to allow for individuality and design to remain at the core of the process, but result in the healthy, comfortable, low energy homes our clients were asking for. And, it had to be scientifically verified and tested. Passive House is that global standard bearer for healthy, environmentally conscious homes. The methodologies were designed by academics, improved by architects, scientists and builders, and have been tested and improved upon for over 30 years. (Correa Prefab Home Compact)
The learnings from the science and design thinking developed over the last 30 years can be used to inform the thinking for all buildings. However there is an additional element to take into account, shading for the Australian summer, which the Europeans do not need to think so much about! Our team can help work through how you want your habitat to work for you, guide you through the intricacies of environmentally conscious, low energy building methodologies, and design a habitat that will work for you in the way you want it to.
Core Principles of High-Performance Homes
Passive House design is not just a label; it is a rigorous scientific approach to building physics. Passive House is a rigorous, voluntary energy performance standard for buildings. This standard focuses on reducing the building's ecological footprint while maintaining high indoor comfort levels. The core tenets include extreme insulation, airtight construction, thermal bridge-free detailing, high-performance windows, and mechanical ventilation with heat recovery.
Our team has one of the largest cohorts of Certified Passive House Designers in Australia. The team is a blend of experienced designers and graduates who bring fresh perspectives to the thinking and visualisation of our projects. The combination of experience and unbridled design thinking creates enviable results for our clients. We offer a complete interior and building design service for home improvements and new construction, with a team of award-winning professionals dedicated to your specific climate zone.
By integrating these principles, we ensure that your home maintains stable temperatures year-round. This stability reduces the need for active heating and cooling systems, leading to lower utility bills and a significantly reduced carbon footprint. The result is a home that is not only environmentally responsible but also economically smart over its lifetime.
Net Zero Habitat: Flexible Design Solutions
We’re proud to announce the launch of our pre-designed Net Zero Habitat Homes. Designed as flexible, high-performance spaces, they are ideal for granny flats, secondary dwellings, AirBnB accommodation, or family homes. Developed using Passive House principles and prefabricated construction methods, several designs can achieve a 10-star energy rating across most Australian climate zones. This achievement delivers exceptional comfort while using virtually no energy for heating and cooling.
The Net Zero Habitat range includes a variety of native-inspired designs such as the Wattle, Lilly Pilly, Banksia, Grevillea, Paperbark, Correa, Bottlebrush, Ironbark, Snowgum, Kangaroo Paw, Red Gum, and Forest Red Gum. Each design is optimized for passive solar gain, ensuring that the home works with the Australian sun rather than against it. The flexibility of these designs allows them to be adapted to various site conditions and personal preferences.
These homes are not just about energy efficiency; they are about creating a healthy living environment. The use of natural, low-VOC materials ensures that the indoor air quality remains high, promoting better health for the occupants. The prefabricated nature of these homes also means faster construction times and less waste on site, aligning with our commitment to sustainable building practices.
The KETO Project: Award-Winning Innovation
The KETO Project stands as a testament to what is possible when design innovation meets environmental responsibility. It is the winner of two national awards at the Design Matters National 2026 True Zero Carbon Challenge, securing both the ACT Award and the Best Materials Research Award. This competition asks one demanding question: can a home produce more energy than it uses and pay back the entire embodied carbon of its materials by 2050?
The KETO Project doesn’t just meet that challenge; it beats it, reaching net zero carbon by 2048, two years ahead of target. This achievement is significant because it demonstrates that high-performance homes can be both aesthetically pleasing and environmentally superior. The project features 8+ NatHERS stars, verified high thermal performance, and net energy positive capabilities.
Key features of the KETO Project include:
- Size: 190 square metres including single garage.
- Layout: 3 bedrooms, 2 bathrooms, plus a powder room.
- Performance: Just 170 tonnes of upfront (embodied) carbon, remarkably low for a whole family home.
- Airtightness: Targeting ≤0.6 air changes per hour, against an NCC maximum of 10.
- Materials: Carbon-storing timber, wood-fibre insulation and a fully circular, recycled and recyclable material palette.
The ground floor is designed for flexibility and longevity, with a private master bedroom, ensuite and its own deck. A separable study / multi-functional room sits apart from the main living area, providing a quiet workspace or guest room. The first floor offers an upstairs retreat and study nook, ensuring that every member of the family has their own space.
Comparing Prefab vs. Traditional Builds
When considering a new home, one of the most critical decisions is the construction method. Prefabricated homes, like those in our Net Zero Habitat range, offer distinct advantages over traditional site-built homes. The table below outlines the key differences.
| Feature | Net Zero Habitat (Prefab) | Traditional Site-Built |
|---|---|---|
| Construction Time | Faster (Factory controlled) | Longer (Weather dependent) |
| Waste Generation | Minimal (Recycled materials) | High (Site debris) |
| Quality Control | High (Precision engineering) | Variable (Skill dependent) |
| Energy Performance | 10-Star Rating Potential | Varies by builder |
| Cost Predictability | Fixed Pricing Models | Subject to variations |
Our approach to prefab construction ensures that every panel is manufactured to the highest standards of precision. This results in a home that is not only more energy efficient but also more durable. The use of triple-glazed uPVC windows with AluClad and fully insulated external and internal wall panels further enhances the thermal performance of these homes.
Key Takeaways
- Passive House design is one of the world’s most stringent energy efficient design standards, ensuring healthy and comfortable living environments.
- reimagined habitat has one of the largest cohorts of Certified Passive House Designers in Australia, providing expert guidance for your project.
- The Net Zero Habitat range offers flexible, high-performance designs suitable for granny flats, secondary dwellings, and family homes.
- The KETO Project won two 2026 True Zero Carbon Challenge Awards, achieving net zero carbon by 2048.
- Prefabricated homes offer faster construction times, less waste, and higher quality control compared to traditional builds.
- Our team works across Melbourne, Sydney, Canberra and the south coast of NSW, delivering homes that respond to local conditions.
- Free 30-minute design consultations are available to help you understand the potential of your site and the benefits of Passive House principles.
Frequently Asked Questions
What is a Passive House?
Passive House is a rigorous, voluntary energy performance standard for buildings that focuses on reducing the building's ecological footprint while maintaining high indoor comfort levels through insulation, airtightness, and heat recovery.
How much does a Net Zero Habitat home cost?
Costs vary depending on the specific design and site conditions. For example, the KETO Project starts from $325,000 + GST. We offer transparent pricing models to help you plan your budget effectively.
Can Passive House principles be applied to renovations?
Yes, we offer a complete interior and building design service for home improvements. Passive House principles can be adapted to existing structures to improve comfort and energy efficiency.
What is the KETO Project?
The KETO Project is an award-winning prefab home design that achieves net zero carbon by 2048. It features 190 square metres of living space, 3 bedrooms, and high thermal performance.
Do you offer free consultations?
Yes, we offer a free 30-minute design consultation. During this session, we discuss your goals, explore options, and identify opportunities to improve comfort and performance.
How does prefabrication improve energy efficiency?
Prefabrication allows for precision manufacturing in a controlled environment, ensuring that insulation and airtightness details are executed perfectly, which is difficult to achieve consistently on site.
What regions do you serve?
With team members based in Melbourne, Sydney, Canberra and the south coast of NSW, we work with clients across the country, delivering homes that respond to local conditions.
Start Your Journey
Are you considering building a new home that is comfortable, healthy, and energy efficient? Turn uncertainty into a clear and confident plan. Register for a free 30-minute design consultation today. We are ready to help you reimagine your habitat.
Contact us now to schedule your session and begin exploring the possibilities for your future home.