The black vertical cladding catches the eye first. It frames a box-like volume that projects toward the water, set against white stucco surfaces and large windows with slim dark frames. The contrast is direct and deliberate, but the real shift in the house is spatial: two new volumes extend the detached home, while a new video / void opens the interior and pulls daylight deeper into the plan.

Two box-like volumes, one sharper street presence

The existing house has been extended with two clean, almost cubic additions. Seen together, they separate the new work from the original volume without breaking the house apart. White rendered walls replace the former grey brick look, so the extension reads as a reset rather than a patch. At the same time, the added mass gives the house a stronger outline from the outside, especially where the new glazing cuts through the white surfaces in long, horizontal bands.

Inside, the change is not only measured in square metres. About 70 m² of extra living space was added, including a bedroom and an atelier room. A new video / void links the levels and gives the plan more breathing room. Instead of adding rooms in a flat sequence, the architects introduced height and a clear pause in the volume, which changes how the house is experienced from one side to the other.

Vertical cladding that sharpens the waterside volume

On the water side, the extension steps forward like a narrow viewing device. The black vertical slats wrap that part of the house and give it a tighter, more graphic edge than the white plaster around it. The profile rhythm is easy to read from a distance: dark lines, narrow joints, and a surface that catches light differently as you move. The material choice keeps the extension visually distinct from the rest of the house while reinforcing its vertical emphasis.

That contrast matters because the volume is not treated as a generic addition. The cladding is detailed so the surface stays as clean as possible, with no visible seams in the main reading of the facade. A deliberate break is introduced around the window zone, where a slim interruption of plaster cuts through the vertical field. It is a small move, but it stops the facade from becoming too smooth and gives the narrow opening its own place in the composition.

A narrow opening that points across the water

The waterside projection is shaped around the view. From the master bedroom, the opening looks across the river rather than out to a flat, neutral landscape. That orientation turns the extension into a frame for the setting, not just an extra room. The window sits within the black vertical cladding like a measured incision, with white plaster above and below. That restrained break in the surface makes the vertical lines feel more pronounced, especially where the cladding meets the lighter wall planes.

The same logic appears in the larger glazed areas elsewhere on the house. Big windows sit within the newly white-painted envelope and bring more light into the interior, while their dark frames tie back to the black cladding on the projecting volume. The result is not a single image repeated everywhere, but a series of related moves: solid white walls, dark vertical accents, and openings that vary in size and depth.

Light, height and a more open plan

The new video / void does more than create volume. It changes how the house connects floor to floor, letting light travel through the extension and making the plan feel less compressed. The extra height also offsets the very box-like additions outside. Instead of only widening the house, the design introduces a vertical pause, so the interior gains depth as well as area. That is where the house extension feels most effective: in the relation between the added rooms and the open space between them.

The original house was also upgraded at the same time. Insulation was added, and a climate installation was introduced, while the old brickwork gave way to white stucco. Those moves are less visible at first glance, but they are part of the same architectural correction. The exterior no longer depends on the old material base; it now reads as a composed set of white planes, black slats, and large openings that work together around the new additions.

Working out the corner in detail

One of the most difficult points was the angled corner at the water side, where the window surround turns inward by 145 degrees. The cladding could not simply continue without interruption, because the fixing system and the inward metalwork conflicted at that point. The solution translated the angle on the drawing into a workable detail within the cladding system, allowing the corner to hold its shape without losing the clean line of the extension. It is the kind of junction that only becomes visible when it is handled well.

That attention to the corner also helps the house read as one composition rather than separate pieces. The white stucco surfaces, the black vertical slats, and the broad glazing all meet with clear edges. Nothing is overloaded. Instead, the building relies on proportion, opening size, and the repetition of vertical lines. The waterside volume gets the strongest expression, while the rest of the extension stays quieter and lets the larger geometry do the work.

Material contrast that carries the whole project

The material palette is narrow, and that is part of its strength. White stucco softens the older structure and gives the main volumes a flat, light-catching surface. Black vertical cladding marks the extension and draws the eye to the areas where the house reaches outward. Between them sit the large windows and the slim dark frames, which help the transitions feel precise rather than busy. Even the slight interruptions around the window zone contribute to that reading, because they keep the surfaces from becoming monotonous.

Seen from the garden or from the water side, the house now has a clearer profile. The new volumes project, the cladding creates rhythm, and the large windows open the interior to the view. What was once a standard detached house has been reworked into a modern home extension with a stronger outline and a more varied interior section. The change is visible in the facade, but it is just as evident in the way the space now moves.