Northcote Flexible House

The ceiling shape allows heat to collect and be removed via louver windows. This shape also bounces light into adjacent living spaces.

There was a focus on sustainably sourced and re-used materials. Much of the existing structure was retained, demolished materials were re-used on and off site, and appliances were re-used.

The engineering design minimized the use of steel. Sustainably sourced, radially-sawn timber decking, flooring and fencing reduced waste, and natural 'lino', carpets and underlays, low emission paints, and ply wood cabinetry all contributed to reduce off-gassing.

Rainwater harvesting and grey water recycling have been fully incorporated, minimizing storm water run-off and use of mains water.

In addition, all outdoor areas are permeable, to assist in watering the garden, and further reduce run-off.

Water-efficient showerheads and appliances further reduce waste. Existing vegetation assists to retain water on site, and landscaping incorporates indigenous and drought tolerant plants.

Large doors slide back to link the family room, or close to make the space private. A built in bed folds down to convert the space into a guest bedroom.

Living spaces are oriented to the north, thermal mass naturally heats and cools the building, and double-glazing and high levels of insulation reduce heat transfer.

The high ceiling uses a 'stack effect' to collect and remove heat via clerestory windows, and openable windows throughout facilitate cross ventilation.

Sun penetration to west windows is controlled with external blinds, operable shutters, and a shade sail, and north windows are shaded in summer months via eaves and fixed louvers.

The ceiling form bounces light into a living space through an internal window that would not otherwise have received natural afternoon light.

In addition, the building form allowed for retention of solar access to adjacent properties.

To achieve maximum impact, the clients were educated on how to operate the building to best utilize passive heating and cooling and reduce water use.

On site composting, worm farm, clothes line, secure bike storage, solar hot water with gas boost for hydronic space heating, zoning for heating, and ceiling fans all act to further reduce energy consumption and waste.

Credits

• Text by Shae Parker, Courtesy of Zen Architects
• Photographs by Emma Cross, Courtesy of Zen Architects
• Compiled and Edited by Varun M Ajani

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