Healthy buildings that don’t cost the Earth.
Net Zero Design is a Brisbane-based sustainable building design and consulting practice for home renovations and extensions, new homes and community projects across Queensland, New South Wales and beyond. We design healthy buildings that do more with less. We work with you, your builder and key consultants from early design, so your project is practical to build and designed to your budget.
Holistic
approach
Passive solar design, efficient use of space and durable construction, balancing function, cost and impact over the building's whole life.
Healthy
living
Clean air, natural materials and year-round comfort, with a close connection to nature and low risk of mould and condensation.
Modular
design
Flexible and adaptable modular designs to fit your site, budget and future needs. Easy to extend as your life changes.
New homes & retrofits
Sustainability consulting & collaboration
Urban Design / Masterplanning
Christina Renger, Founder / Principal
Dipl.-Ing. Arch. (FH) | M. Arch. | Associate RAIA
Designing more with less
More comfort, health and value from less space, energy use and material - buildings designed to last and work with nature. With 25 years’ industry experience and degrees in architecture and urban design/planning from Australia and Germany, I combine building science and creative design with a deep understanding of local climate, land and community. Technical expertise in healthy construction and long-term environmental impact informs every project, whether you're renovating your home or looking to collaborate on sustainable design.
From pre-purchase advice, plan reviews and fixed-fee design workshops to full building design and sustainability consulting, my services are tailored to your needs. Have a project in mind? Start with a free 30-minute online meeting to talk through your ideas, site and next steps.
What our clients say
“Christina is not just fully informed of all matters to do with green design and building. She is pioneering new ground and highly capable at cooperating with other professionals in this arena. For a client she is very personable and flexible to work with. I fully recommend her as a partner to both clients and others working in this field.”
— Greg, Tallowood Ridge Residence Client
“Net Zero Design articulated what our vision was and made our front facade and deck extension visually tangible. It was also great to have a firm take into considerations our personal hopes for healthy and sustainable considerations.”
— Bryan & Michaela, Aspley Residence Clients
Working with Christina was easy, we felt that we were part of the design team. Christina's communication was always clear, as were her explanations around legislation. She aligned all the materials and contractor meetings around us. We couldn’t have asked for a more passionate person to help us design our dream home.
— Adam & Belinda, Wavell Heights Residence Clients
