The extension of a house in Brussels combines wood and transparency

In studio hé’s renovation, the extension breathes new life into the small backyard of a courtyard house. Triple heights, details, and materials create a new domestic landscape.

Belgian firm hé architectuur in Brussels signs a residential project that reinvents the house as an evolving organism, capable of adapting over time to the needs of the family living in it.
The project aims in fact to introduce more flexible, bright spaces closely connected to the outdoors.

Following the demolition of the non-original rear extension, hé! decides to replace it with a compact, tall structure permeable to light. The new wooden structure, assembled with removable bolted joints, stands out for its lightness and reversibility in contrast with the rough brick surfaces painted in white. It opens up to the garden, establishing a continuous dialogue between interior and exterior, and preserves the existing wisteria on the rear facade, a natural element the studio wished to retain.

Hé architectuur, Kasteel, Ganshoren, Belgium, 2024. Photo Tim Van de Velde

The light wood frame of the new extension and the lightweight metallic balustrades and handrails blend with the chromatic and material choices of the furnishings, creating a harmony of soft colors that enhances the tiled, wooden, and granular floors across different levels.
The intervention harmonizes with the rhythm of the house's historic staircase: the first floor of the new extension becomes an intermediate level between the kitchen on the ground floor and the living room on the noble floor. The double height illuminated by the large glass panel connects the three levels, bringing light and air deep inside.

The street-facing facade is also reconsidered: between the main facade and a new internal glass wall, a service space is created for bicycles, strollers, and clothes—a sort of urban filter between city life and domesticity.
A slight elevation of the facade also provides additional volume for two children's rooms on the upper floor, offering a privileged view of the Atomium.

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