M03 house renovation by BAST contrasts an
old brick base with a new metal extension

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Toulouse architects BAST have renovated a derelict house in the French city by adding a corrugated steel extension that contrasts with the existing masonry (+ slideshow).

M03 house renovation by BAST contrasts old brick base with new metal extension

BAST responded to planning regulations outlawing the demolition of the existing house by designing a vertical extension that will give its inhabitants an additional storey once the interior refurbishment is completed.

M03 house renovation by BAST contrasts old brick base with new metal extension

The metal-clad addition replaces the building's damaged roof and sits on top of existing limewashed stone and brick walls, which echo the construction of other buildings on the street.

M03 house renovation by BAST contrasts old brick base with new metal extension

"We wanted to create a strong contrast between the part retained and the new part - to contrast massiveness of masonry against the abstract extension," architect Laurent Didier told Dezeen.

M03 house renovation by BAST contrasts old brick base with new metal extension

The angular structure features an offset gable and is punctuated by small windows on the south and west sides. The use of the strong but lightweight corrugated material reduces stresses on the lower storey.

M03 house renovation by BAST contrasts old brick base with new metal extension

"The extension allows the metal to not overload the existing foundations and walls," said Didier, adding that the weight of the new structure is equivalent to that of the old roof.

M03 house renovation by BAST contrasts old brick base with new metal extension

A row of roof lights along the north-facing surface brings a soft and consistent natural light into the upper floor of the building.

M03 house renovation by BAST contrasts old brick base with new metal extension

The ground floor will contain an open plan living room and kitchen, with a separate area housing a bedroom, bathroom and storage space.

M03 house renovation by BAST contrasts old brick base with new metal extension

A new framework constructed inside the existing walls will support a first floor containing two bedrooms, a bathroom and a mezzanine office.

Floor plan of M03 house renovation by BAST contrasts old brick base with new metal extension
Floor plan - click for larger image
Exploded view showing process of M03 house renovation by BAST contrasts old brick base with new metal extension
Exploded view showing process - click for larger image
Exploded view two of M03 house renovation by BAST contrasts old brick base with new metal extension
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Exploded view three of M03 house renovation by BAST contrasts old brick base with new metal extension
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Exploded view four of M03 house renovation by BAST contrasts old brick base with new metal extension
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Exploded view five of M03 house renovation by BAST contrasts old brick base with new metal extension
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  • Mr Walnut Grey

    What a fantastic juxtaposition of old and new. Hope to see pics of the interior when it’s finished.