The window faces sideways, not down the street
At Borneo 12, the main window looks along the house rather than out from its ends. MVRDV placed a full-length glass facade on the long side of a 2.5-metre-wide home and turned it toward an alley. The front and back remain closed. The move gives the narrow house a sustained side outlook, but it also makes that outlook face a threshold whose privacy depends on how the alley is used. [1] [2]
- Borneo 12 uses half of a 5-by-16-metre plot for a 2.5-metre-wide house, leaving an equally wide alley. [1] [2]
- The house’s full-length glass facade faces the alley; its front and back are closed. [1] [2]
- The outlook runs the length of the house but crosses only a 2.5-metre slot to the party wall. [1] [2]
- The MoMA catalogue describes the alley as semipublic and open to the street and passersby; its lower, canal-facing portion is somewhat shielded. [2]
The side becomes the outlook
The geometry is unusually direct. The plot measures 5 metres wide by 16 metres deep; the house takes up half its width, leaving a slot of equal width beside it. Instead of treating the short ends as the principal windows, MVRDV opens the house along the length of that slot. The glazing runs the full length and height of the house but looks across a 2.5-metre slot toward the party wall, so the outlook is long in extent and shallow in depth. [1] [2]
What changes when the window turns
In a conventional front-to-back arrangement, rooms are commonly oriented toward the street at one end and a garden or yard at the other. Borneo 12 reverses the emphasis: the narrow ends are closed, and the long side does the work of a frontage. A person looking out faces sideways across the alley toward the party wall a few metres away, not through the house toward the street or the canal. This comparison describes the documented openings, not a measured view cone or a claim about every conventional narrow house. [1] [2]
Privacy moves with the view
Turning the window inward does not make the house more private: the Museum of Modern Art’s 1999 catalogue says the alley opens the house to the street and to passersby, with only the alley’s lower, canal-facing portion somewhat shielded from public scrutiny. MVRDV calls the alley private, while the catalogue describes it as semipublic. The glass gives the interior a broad visual connection to that space, and anyone using the alley may be visible from inside. The arrangement shifts the privacy question from the street facade to the boundary of the alley. [1] [2]
The alley is part room, part outlook
The view is not an empty corridor. The alley contains storage and two closed volumes: one for a guest room and bathroom, and another that locally widens studios on the upper floors. MVRDV describes the latter two volumes as hung on the glass facade, enclosing parts of the exterior zone. The sideways view therefore changes with position: the house looks into a sequence of narrower and wider moments rather than one uninterrupted panorama. [1]
A clear idea with a specific compromise
Borneo 12 makes a strong case for the long side of a narrow house as its main face. It gains a 16-metre run of glass where end windows would be only 2.5 metres wide, though that glass looks onto a narrow slot rather than a distant view. The facade creates a sustained lateral outlook, not depth. Before borrowing the move, check who can enter the side space, what can be seen from each floor, and which opaque volumes interrupt the view. The published project description establishes the facade and layout, but not precise sightlines, so those need a verified plan or on-site study. [1] [2]