In the heart of the municipality of Jette, a distinctive silhouette catches the eye of passersby: the Withuis, or “White House.” A masterpiece by Brussels architect Joseph Diongre, this 1927 building symbolizes much more than a simple residence. BlendingArt Deco and Modernism, its Cubist-inspired façade conceals a unique family history. Designed for the man of letters Jef Mennekens, the house has preserved its period furnishings and its soul intact for nearly a century. Betweenthe architectural aesthetics of the “Paquebot style” and the tale of a century-long saga, discover the secrets of this white gem, a true icon of local heritage.
The architectural genius of the Withuis, between Art Deco and Modernism
Built in 1927 on the then-nascent Charles Woeste Avenue, the Withuis is one of Joseph Diongre’s most striking works. Known for his diverse portfolio, ranging from social housing to the famous radio building on Place Flagey, the architect presents here a manifesto of tempered modernism. The building’s very name is a nod to the “Zwart Huis ” (Black House) in Knokke, but it stands out with a more nuanced design, where geometric precision meets the elegance ofArt Deco.

Here we find the hallmarks of the modernist movement typical of Le Corbusier, such as ribbon windows and the rooftop terrace. But the originality of the Withuis lies above all in its cubist volumes and tubular railings. Details that instantly evoke the famous “Paquebot style ” so prized during the interwar period. More than just a building, this unique structure stands as a masterful fusion of avant-garde technicality and artistic creativity.
A total work of art: the incredible story of a poet’s home
Behind its immaculate façade, the Withuis conceals an interior that has remained intact since 1927. For his friend Jef Mennekens, Joseph Diongre was given a true carte blanche, allowing the architect to design a complete work of art. Beyond the blueprints, he designed the interior furnishings and stained-glass windows, as well as the lighting fixtures and ceramics. The tribute to the owner is, in fact, etched in iron through an inkwell and a quill integrated into the ironwork, while the monogram “JM” adorns the front door.

But the human story of the Withuis is just as extraordinary as its walls. The residence, listed as a Historic Monument since 1985, remained in the Mennekens family for over 90 years. Daisy, the poet’s daughter, lived there until she was 102, watching over this light-filled, sixteen-room temple like a guardian. Sold in 2019 to an owner committed to its restoration, Jette’s “White House” continues to stand the test of time, embodying both poetry and elegance.
📍183 Avenue Charles Woeste, 1090 Jette