In the coastal township of Barwon Heads, Australian architecture firm Peter Winkler Architects has completed the Green Velvet House, a family’s solar-powered home that sensitively responds to the landscape in more ways than one. Positioned for passive solar design and to maximize views over the surrounding tree canopy, the sustainable dwelling was engineered to minimize impact on the existing terrain. In addition to walls of glass that let in natural light and ventilation, the home draws power from a rooftop solar array and minimizes its environmental footprint with rainwater collection tanks for irrigation and toilet-flushing.
Nestled into an existing depression in the site, the Green Velvet House rises to a height of two stories with 580 square meters of living space. Its minimalist appearance — a facade of cement sheets and floor-to-ceiling glazing divided by exposed structural timbers — helps to reduce the building’s visual impact on the landscape. “In response to the program, we have minimized the building footprint by efficiently consolidating the form, rather than creating a sprawling building that overtakes the site,” the team explained.
To keep the focus on the outdoors, the solar-powered home is surrounded by walls of glass and terraces that invite the owners outdoors on multiple floors. The outdoor spaces and the interiors are protected from unwanted solar gain by generous eaves and horizontal screens. The main living areas and the guest bedroom are located on the ground floor, while the upper floor is reserved for the more private areas, including the master suite and two children’s bedrooms. Plywood walls and a sealed fiber-cement ceiling reference the exterior materials and lend a sense of warmth to the interiors. Recycled “Grey Ironbark” hardwood columns and beams are also featured throughout the building.
For energy efficiency, the Colorbond tray deck roof is fitted with a 10.26 kW photovoltaic system. The aluminum sliding doors are also outfitted with double glazing, while the double-hung, sashless windows can be opened for natural ventilation. Three 5,000-liter water tanks were installed beneath the north deck to store rainwater for garden use and toilet-flushing, while other stormwater runoff is retained in bioswales. The home is also equipped with hydronic heating, wood-burning fireplaces and a Sanden heat pump with a 315-liter water tank.
Photography by Jack Lovel via Peter Winkler Architects