A white volume rises from the slope with little fuss, while the new extension settles into the top of the dike and opens wide toward the landscape. The project reads as a modern dike house renovation and extension rather than a simple addition: the old house was renewed, then extended with a new build that disappears into the land on the street side and becomes legible through light, glass, and material contrast on the inside.

A volume shaped by the land

From the street, the added part does not announce itself as a separate house. Its low profile follows the terrain, so the building sits inside the overall composition of the landscape instead of standing apart from it. That sense of being built into the slope is reinforced by the green roof, which carries fruit trees and wildflowers across its surface. The roof line does more than soften the structure: it turns the upper plane into part of the site itself, while the house remains tied to the dike below.

Seen in section, the project is clearly a slope-integrated dwelling. The underground construction is mentioned for its straightforward heat storage, but the more immediate reading is spatial. The house is nested in the earth, then opened again by the glass and the larger rooms in the extension. That shift from solid ground to open view gives the project its strongest move, and it keeps the older part of the house connected to the new one without relying on decorative gestures.

White surfaces against concrete and steel

The renovated exterior remains white, including the roof areas, which makes the newer volume stand out through structure rather than color. Concrete and steel define the extension, and that harder material language changes the tone of the building without breaking the link to the original house. It is a straightforward contrast: white plaster against grey concrete, rigid lines against the softer green roof, a renovated shell beside a more exact, contemporary addition. The result is readable at a glance and clear in detail.

Inside, the palette keeps to wood, concrete, white, and shades of grey. Nothing here depends on ornament. Surfaces do the work instead. The materials carry the transition from old to new, while the rooms remain calm enough for the landscape to stay present through the large openings. In a concrete and steel architecture project like this, the structure could easily feel heavy, but the white and timber elements keep the rooms open and visually measured.

A large glass facade facing the view

The broad glazed elevation is one of the clearest features of the extension. It frames the landscape directly and pulls daylight deep into the living spaces. The glazing is not treated as a showpiece; it is the point where the house connects most visibly to its surroundings. Because the new part is built into the top of the dike, the window wall sits at a level where the terrain and the interior meet naturally. That gives the view a fixed frame and the rooms a strong horizontal line.

This is where the project becomes a large glass facade study as well as a renovation. The open edge, dark framing, and clear spans of glass contrast with the white outer shell and the green roof above. Light enters with little obstruction, but the structure still feels grounded. The house is not floating on the slope; it is embedded in it, and the glazing makes that condition visible from inside as well as outside.

Rooms divided by the extension

The original part of the house contains two simple, bright bedrooms. They remain close to the older fabric of the building and keep that part of the plan quiet and compact. The extension holds the living room, kitchen, and bathroom, so the more open daily spaces move toward the glass and the view. That distribution makes the house easy to read: sleeping rooms in the original body, shared rooms in the addition, all linked by the same restrained palette and by the movement of light through the plan.

The transition between the two parts is handled with plain materials rather than decorative thresholds. Wood softens the hard surfaces, while grey tones keep the newer rooms from feeling visually isolated. In practical terms, the plan is simple; in spatial terms, it is precise. Each room has a clear role, and the change from enclosed bedroom to open living area is felt through the shift in light, height, and material surface.

A white bathroom with just enough texture

The bathroom uses white on the walls, floor, and ceiling, but it does not feel flat. Natural materials interrupt the whiteness, and the large double washbasin gives the room a clear center. The effect is less about display than about proportion: broad white planes, a few grounded objects, and surfaces that catch the light without reflecting too much of it. Wooden accessories and woven baskets add texture where the room needs it most, especially against the harder edges of the sanitary fittings.

Because the room sits within the extension, it benefits from the same strong daylight that shapes the living spaces. The color choice enlarges the room visually, and the repeated white surfaces keep attention on the outline of the fittings and the grain of the accessories. The guest bathroom continues that approach with a compact washbasin and a white toilet, keeping the same stripped-back reading in a smaller footprint. It is a modest space, but one that stays consistent with the rest of the house renovation.

How the roof changes the reading of the house

The green roof is not only a visual gesture. Fruit trees sit on top, and wildflowers run across the sunny slope, so the upper surface reads as planted ground rather than a detached roof plane. That detail matters because it keeps the extension tied to the dike itself. The house does not merely sit near the landscape; part of it becomes landscape. From a distance, the planted roof reduces the volume of the addition. Up close, it adds another layer of texture to a building already defined by white render, concrete, steel, and glass.

What makes the project memorable is the way each element answers another one: the white shell against the darker structure, the closed old bedrooms against the open living spaces, the planted roof against the hard line of the slope, the large glazed surface against the solid earth around it. The result is a house that stays visually legible from the street and from inside, with the landscape always present as a fixed part of the composition. In that sense, this modern dike house renovation and extension is less about addition than about repositioning the house in its site.

The final impression is controlled and direct. Concrete meets wood, steel meets white plaster, and the glass wall keeps the landscape close without overplaying it. Even the smallest rooms stay in step with that approach. Everything serves the same architectural move: a house built into the slope, renewed with restraint, and opened where the view is strongest. The project shows how a slope-integrated dwelling can be altered without losing its relationship to the land that holds it.