Why Green

Sustainable Design

Sustainable design includes optimising solar access, minimising energy demands, maximising energy efficiency, conserving water, and choosing environmentally friendly building products.

Heating and cooling accounts for as much as 40%* of Perth household energy consumption. Custom Green’s vision is to design homes that not only are a perfect fit for your lifestyle, but are high performing eco homes ensuring you remain thermally comfortable all year around whilst keeping running costs low.
*Source: Your Home. Australia’s Guide to Environmentally Sustainable Homes.

Custom Green uses design thinking combined with best industry practice, and takes the time to consider the following items when planning your dream sustainable house project:

Elements of Climate Responsive Design

Passive Solar Design

Passive solar design refers to the appropriation of free resources – the sun and wind, to provide heating, cooling, lighting and ventilation. This is not a new concept; our ancestors were far more rigorous in their use of passive design principles than we are today. The advent of building technologies (in particular air-conditioning) brought about a wave of architecture which did away with passive solar design and led to a vastly modified and energy intensive building sector.

At Custom Green, we believe in combining the proven sustainable design approaches of our ancestors with modern day technology to create innovative, low energy solutions.


Nature has been perfecting engineering for billions of years. While modern technology is predicated on the use of high temperatures and pressures to manipulate materials, if we look around we can see amazing forms developing with inputs as simple as sun, wind, water and soil.

In building design, biomimicry is using or imitating models, systems, and elements found in nature. It is an approach used to solve problems such as structural integrity and, more relevantly, harnessing of natural energy.

Seasonal Homes

Seasonal homes are based on natural systems adapting to their surrounding climate. Deciduous trees grow and drop their leaves to provide shade in summer and let sun through to undergrowth in winter. Lakes freeze at the surface to protect aquatic life from the harshest cold temperatures. Houses often have some dynamic elements such as blinds and windows to help modify the internal climate according to the season, however we believe this can be taken further to create homes which operate according to the season. At Custom Green we can work with you to design houses which, through minor adjustments at the start of each season, function optimally all year round without the need for expensive heating or cooling systems.