A Hidden Addition - Unfurled House by Christopher Polly Architect
Petersham, NSW, Australia

Photography Brett Boardman
Words Liz Barrett

Hidden by a heritage Federation façade, a modernist two-storey addition by Christopher Polly Architect, carefully stitched to the primary dwelling, waits to be discovered. Deliberately preserving the original frontage, the new extension sits as a contrasting form, bold in its design and captivating in its execution.

The brief was to create a new addition while retaining the existing lawn and established garden areas. Christopher explains that the remarkable design was delivered “in a highly creative manner within a modest footprint.” Working with, rather than against, the existing site, Christopher utilised the incline to the rear to create a sectional split-level extension to the home. On the northern wall, bridging the old and new, a central courtyard marks a point of connection between the two.

The connection point between old and new.
The new addition is flooded with light from the second-storey voids.
The living area sits harmoniously in the centre of the northern and rear courtyards.

Working with, rather than against, the existing site, Christopher utilised the incline to the rear to create a sectional split-level extension to the home.

The view from above: the ground floor from the second storey.
The monochrome colour scheme is carried right throughout the home.

Inside the home, an astonishing central vaulted roof emanates from the old house up to the new two-storey addition. This not only provides a glazed circulation link for ventilation but allows natural light to flood the interior. The home unfolds in three dimensions and like a flowering bud in bloom, it appears to unfurl into a series of connected interior spaces. The difference between the original dwelling and the new extension is not just in the architecture alone. The interior is dominated by geometric shapes, sharp lines and angles with a material selection that is subdued, a stark contrast to the traditional heritage residence. Christopher says, “the interior palette is restrained. The monochrome colour scheme provides a distinctive counterpoint to the conserved Federation details, materials and colour palette of the original residence.”

The home is enveloped by the surrounding environment.
The combination of curved walls and natural light soften the space.

Inside the home, an astonishing central vaulted roof emanates from the old house up to the new two-storey addition.

Geometric shapes and sharp lines dominate throughout the new addition.
The use of playful geometric patterns reflected in the bathroom.

The impressive carved voids expand the space and encourage a spatial interplay between levels, enabling multiple sightlines across the interior spaces and out into its surroundings. Christopher comments, “the site receives generous eastern light at the rear, however, light from the north was compromised due to the northern neighbour. These voids on either side of a first-floor bridge assist in capturing oblique northern light from the courtyard and the rear.”

The second storey is exposed to its surroundings.
There are multiple viewpoints from every part of the home.

The precise fenestration placement within the new addition harnesses natural light, forcing it to penetrate throughout the interior, while promoting passive ventilation. Projecting hoods and external blinds temper solar infiltration. Acoustic reduction measures have been incorporated, not only as an alternative air ventilation and insulation, but to assist in alleviating latent aircraft noise.

At the rear, three protruding “wedges”, which double as a day bed, reading space and outdoor storage, further connect the home to its external environment. “These elements established the geometry of the project and make strong connections to its setting without impacting the neighbouring homes or dominating the garden areas,” Christopher adds.

Through a context-driven approach to form, what was once an ordinary Federation home has now been transformed into a blooming contemporary residence. The heritage face that the original home presents to the world has been respectfully preserved, but this historic façade belies the new addition that brings the home into the present, providing its inhabitants with astute flexibility and significant room for a growing family.

The home appears to unfurl in a series of connected spaces.
Cleverly designed “wedges” provide storage and seating solutions.
Sharply defined lines and geometric shapes continue from outside to in.

Through a context-driven approach to form, what was once an ordinary Federation home has now been transformed into a blooming contemporary residence.

Where the original residence meets the new addition.
Wedges” protrude from the building, this one doubles as a window seat.
Northern courtyard that connects the past with present.
Published 22 September, 2019
Photography  Brett Boardman
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