Pushing the limits

Architect Andrew Mulroy explains how this 1930s terrace was transformed without planning permission

See how a 1930s terraced house was extended on two levels without the need for planning permission

This 1930s mid-terraced house in Bounds Green, north London, was in a state of disrepair when its current owners bought it. We were asked to complete an eco-friendly, wholehouse refurbishment that would create extra living and sleeping space, as well as improve links with the garden.

A ground-floor extension, replacing an old lean-to, has transformed the original kitchen into a modern, open-plan kitchenliving-diner, as well as creating space for a new cloakroom. Although the extension could have been larger under current permitted development policy, the chosen design maximises daylight within the original building and minimises the impact on the neighbouring properties.

A fourth bedroom with its own bathroom and dressing room has been created in the new loft extension, making the most of the city views. To help the original first storey blend in with the new additions, floor-to-ceiling windows have been added to the rear bedroom and the exterior walls rendered.

As part of the project, asbestos found in the property was removed and the plumbing and electrics were replaced. The walls, roof and floors were also upgraded using a variety of insulation technologies, and period details reinstated at the front of the property.

Now it’s complete, the owners are thrilled with the results, which they say exceed their expectations. Architects: Mulroy, 020 7267 5123, mulroyarchitects.com

Number of bedrooms: Four

Total project cost: £213,800