Crouch End House Renovation: Brick, Daylight and Preservation

A derelict care home in Crouch End, north London, has been converted into a family house by local practice Formwork Architects. The standout move is a two-storey brick extension that connects to a sunken courtyard, drawing both light and the outdoors into the home. The project holds real lessons for designers here in Hong Kong, especially because what we are usually working with is not a 20-foot-high Victorian terrace, but a standard 8-foot-ceiling Hong Kong flat boxed in by tall surrounding buildings. Getting light into a space like that makes material and detail choices all the more critical.

A Brick Extension: More Than Just Looks

In the London project, the architects deliberately chose red brick as the primary material, both to echo the character of the neighbourhood and to blend the new structure with the old. In Hong Kong, brick walls tend to conjure up a “red brick house” aesthetic, but applying the idea here comes with its own pitfalls.

A Hong Kong Take on the Sunken Courtyard: Raising the Floor Instead of Digging Down

The sunken patio in the London project was excavated outward from the basement, creating a direct connection between the ground floor and the garden. Genuine excavation is rarely feasible in a typical Hong Kong home, since it runs into structural and drainage issues, but we can flip the logic and “raise the floor” instead: raising the rest of the interior floor by about 150 to 200mm so that one zone (say, the section of the living room by the window) sits relatively lower, while raising the outdoor platform to match, can create a space that reads like a sunken zone, bringing your sightline closer to the level of the garden or balcony. There are a couple of things to watch for, though.

Waterproofing and drainage are the biggest challenges. Hong Kong’s rainy season brings heavy downpours, so any low-lying area needs a proper waterproof membrane and drainage gradient, or water will collect there. If the flat is on a high floor, you will also need to consider floor loading capacity and regulatory constraints.

Ventilation matters a lot in this kind of design too. A sunken area tends to trap moisture, so it is worth adding mechanical ventilation or high-level openings in the wall to keep the air moving. Any work affecting floor slabs, walls or structure should be assessed by a qualified professional (such as an Authorised Person or structural engineer), with Buildings Department approval obtained where required.

If you are facing a similar design question, please contact our team to discuss your project. We can help you gain more light and comfort with fewer changes.