A Curving Rammed Earth Addition Expands a Family Bungalow in Melbourne
When clients in possession of a 1930s, 1,291-square-foot bungalow on a small city lot in Melbourne approached Steffen Welsch Architects, their primary need was to create enough space for their growing family. They also wanted to be able to host guests and family for extended visits. "We added low-cost operation, current and future functionality, evolving privacy needs, and future accessibility to the brief," said Welsch.
The design plan prioritizes sustainability and flexible interior spaces via the addition of a rammed earth wing that sweeps off the back of the house and curves along the edge of the lot.
"The original Californian bungalow was advertised as ‘quiet at the end of a cul-de-sac.’ We wanted to change that," said Welsch. The new home is divided into four zones, with the existing bungalow now dedicated to children and guests with two bedrooms, a playroom, and bathrooms. "Every zone has its own outdoor space," said Welsch; the front room opens onto the front yard.
A 1,259-square-foot rammed earth addition now arcs off the back of the original house. A transitional corridor connects the bedrooms, including the parents’ new master suite, with the shared living areas. A plethora of glass doors overlook the communal courtyard created by the unique shape of the addition.
"A well-performing house extension facing south on a small inner-city block built in rammed earth is not easy to achieve," said Welsch. "However, in this challenge was our opportunity: We decided that our extension will curl around to capture the sun, creating a communal courtyard and allowing the occupants to look at their own house rather than a paling fence."
"To be sustainable, a building needs to minimize embodied and operational energy over its lifetime," said Welsch. To that end, the design prioritized passive solar principles through the orientation of the building, the installation of high-performance windows and doors, and the use of rammed earth, which has a low embodied energy, said Welsch.
"The addition is oriented towards the sun and faces the original Californian bungalow, allowing you to look at the heritage house from the new part and vice versa," said Welsch. "It combines two unlikely architectural expressions—the casualness and generosity of a lightweight timber-clad building with the heaviness of earth construction."
Related Reading:
Ingenious New Building Method Replaces Concrete Block with Rammed Earth
A Rammed Earth Home Rises on a Breathtaking Site in New Zealand’s Southern Alps
Project Credits:
Architect of Record: Steffen Welsch Architects / @steffenwelscharchitects
Builder: Renovation One
Structural and Civil Engineer: Maurice Farrugia & Associates
Landscape Design: Peachy Green
Lighting and Interior Design: Steffen Welsch Architects
Cabinetry Design and Installation: MTR Cabinets
Rammed Earth: Olnee Rammed Earth
Other Companies: Clearview Sun Control
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