Coarse concrete walls contrast transparent glazing in this extension designed by Paul Archer Design to create a light-filled kitchen and dining room for a north London house.
London-based Paul Archer Design added the 15-square-metre addition to the rear of Tibur House to create a bright, open-planned kitchen, dining area and lounge at ground level.

The architects removed a side wall at the rear of the property to form the extension, and used a cast in-situ concrete structure with a board-marked surface to support the opening left behind.
"This strip of yard that runs alongside the rear wing between the neighbouring garden wall is often overshadowed and under utilised," said the architects.
"It provides an obvious area to extend the kitchen, dining and living spaces into, to suit the needs of the owners," they continued.
Glazing slots into the gap between the house and a neighbouring garden wall to enclose the space, while a concrete planter filled with greenery cantilevers out at the rear beside a concrete wall.
On the other side of this wall, large sliding glass doors open the living areas to the garden.

"The board-marked surface of this in-situ concrete side-return extension presents a bold expression of the structural changes to Tibur House," explained the architects, who wanted to highlight rather than disguise their structural work.

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