Wood grain, soft light and a wall textile with a faint fade set the tone on the upper floor. The renovation stretches across a master bedroom with ensuite bathroom, two children’s rooms, a laundry room and the landing, bringing these spaces into one sustainable interior that reads as a single project rather than a series of separate rooms. The palette stays close to the material itself: timber, ceramic surfaces, stone-like finishes and muted neutrals that let the details do the talking.

A floor plan shaped by everyday movement

The layout is clear the moment you move through it. The master bedroom opens onto its own bathroom, while the children’s rooms and laundry space sit alongside the landing in a sequence that keeps circulation practical and legible. This sustainable renovation does not rely on showy gestures. Instead, it works through measured proportions, built-in elements and surfaces that hold up to use. The result is a circular interior where function is visible in the way doors, niches and corridors connect.

That same restraint is visible in the material choices. The source describes the entire project as biobased, circular and CO2-neutral, and the interior reflects that direction through natural textures rather than decorative excess. Timber appears in wall finishes and joinery, while ceramic tile and stone-like details bring a cooler counterpoint in the bathroom. The emphasis stays on materials that can be read at a glance, not on effects that need explanation.

Biobased surfaces that stay close to the room

The bedroom carries the project’s most legible material gesture. Behind the bed, a gradient wall textile shifts gradually from one tone to another, echoing transitions found in nature: light to dark, dry to wet. It is a subtle move, but it changes the whole wall. Instead of a flat backdrop, the surface feels in motion, and that motion anchors the nature-inspired interior without pushing it into literal decoration. The fade is quiet, yet it gives the room a clear point of focus.

That choice matters because the project avoids overstatement. The wallpaper-like textile behind the bed does not compete with the timber or the curtains; it sits with them. In a sustainable interior, that kind of restraint is often what makes the space believable. The room keeps its calm through material consistency, not through visual noise. The wall textile becomes a marker of the project’s direction: close to nature, but filtered through a disciplined interior vocabulary.

A gradient wall textile used as a spatial cue

What makes the gradient wall textile stand out is not only the effect itself, but where it sits. Positioned behind the bed, it frames the main sleeping wall and gives depth to a zone that could otherwise flatten out. The transition in the pattern suggests changing light, and that idea carries through the rest of the floor: the landing is open and linear, while the bedrooms and utility space are more enclosed. The surface becomes a quiet signal that this is a carefully composed sustainable renovation.

The bathroom follows the same language in a different register. Ceramic tiles in a grid pattern, a curved glass shower element and wood surfaces around the vanity create a room that feels direct and well resolved. Light catches the tile joints and the edges of the niche, so the material layers stay readable. The bathroom is not treated as a separate spectacle; it is part of the wider circular interior, where each surface has a job to do and a place to sit.

Details that keep the interior grounded

Across the upper floor, the details remain practical and precise. In the landing, built-in storage with timber fronts and open compartments keeps the circulation zone from becoming dead space. In the laundry room, integrated appliances and a wooden worktop turn a utility area into a clear working surface. These are small moves, but they help the sustainable interior feel complete. The rooms are not filled with objects to prove a point; they are organized so the architecture itself can carry the use.

Lighting supports that approach. Recessed spots, niche lighting and narrow light lines highlight the shape of the walls and ceilings rather than overpowering them. In several of the images, the light falls across timber surfaces and curved edges, picking out the grain and the line of a cut-out. That low-key approach suits a biobased interior, where texture is more convincing than gloss. It also keeps attention on the parts of the renovation that matter most: surfaces, transitions and built-in depth.

Bedrooms and utility spaces with the same material discipline

The children’s rooms are part of the same architectural conversation, even if the source text gives fewer room-specific details. Together with the master suite and laundry room, they show how the floor was enlarged and reorganized as a complete upper level. The project’s strength lies in that whole-floor approach. A circular interior works best when the rooms do not feel isolated from one another, and here the timber, muted colours and measured layout keep the sequence coherent without resorting to repetition.

Image details reinforce that reading. One bedroom shows a bed set into a niche with curtains close to the window line, while another view uses a mirror opening and a curved sitting element to widen the room without adding clutter. The bathroom images return to tile, wood and glass; the exterior glimpses show a green roof and vertical timber cladding, but the interior remains the core of the story. Together they point to a project that treats material as structure, not decoration.

There is also a clear awareness of how natural references can be translated into interior language. The gradient wall textile refers to shifts in the landscape without copying them literally, and the earthy colour range keeps the rooms close to the same visual register. That is what gives the sustainable interior its consistency. It does not announce itself through slogans. It is built through timber edges, soft transitions, tactile finishes and a layout that lets each room keep its function while staying part of the same renovation.

Photography: buonq

More interior projects can be found through the interior projects archive, with related examples of sustainable renovation projects, biobased interior inspiration and a wider selection of circular interior references. For the studio profile, see BABBET partner profile.