Consultants: Hellier McFarland Pty Ltd
Southern Geotechnical Engineers
Nsient Consulting Engineers
Anthony Middling and Associates
Northern Environmental Design
Photography: Matthew Mallet
The property was under Heritage overlay and close to Monash Freeway. The concept was to link the front and the back garden through a linear walkway, which serves all the private areas and lead to the entertaining ones. The deck in the front is angled towards the front gate so it is more inviting; it continues through the porch and leads you through a nice journey through the back deck. The existing house was renovated to accommodate the private bedroom spaces with their amenities. The new extension focused on the public space without undermining the character of the existing house. As the property is close to the freeway, this arrangement made it suitable to enjoy the outdoors without being affected by the noise.
Even though the new extension had to be erected on a concrete slab for thermal mass, all the external surfaces were kept pervious as using decking, crushed pebbles in driveway and garden beds all around. Deciduous trees were planted to provide shade in summer and allow heat in winter where the evergreen on the perimeter of the property were planted to provide privacy.
A new water tank of 5000 litres was installed underground in the back garden that collects all roof water, to be used for flushing toilets and watering the garden.
The existing and the new house were heavily insulated with roofs reaching R5. Double-glazing was installed on the new extension with low-E glass on the external skin. Hydronic gas heating was installed to provide constant heat in winter. A heat pump was used for water heating instead of solar one as it uses minimum energy and is very effective. All lights are LED and all appliances have minimum 5 stars rating.
A Solar Powered Roof Ventilator was installed in the existing house to extract the heat from the roof in summer. The existing and the new area enjoy direct sunlight that can be protected in summer with the internal blinds and the deciduous trees.