In Quinta da Marinha, on the Atlantic edge of Cascais, Openbook Architecture has completed a single family house conceived as an architecture of matter. Pigmented exposed concrete carries the character of the building, and a palette of timber, natural stone, mineral stucco and zinc accents holds it in conversation with the coastal landscape around it. Across 1,556 sqm and a strong horizontal composition of overlapping planes, the house asserts its presence on the land without competing with it.
Quinta da Marinha sits on the Cascais coast, west of Lisbon, in a low density residential area shaped by pine woods and the proximity of the Atlantic. Building here involves an early decision: whether to defer to that setting or to answer it. This house takes the second route. Rather than dissolving into the landscape, it establishes a presence that is robust, precise and unmistakably built, and then allows the landscape to work on it, on the lines of shadow in its façades, on the texture of its surfaces, on the light that crosses its terraces over the course of a day.
That is a harder position to hold than it sounds. A house built from heavy, unrelieved mass can read as defensive. The question the project sets itself is how to build with weight and still produce a house that feels open, calm and generous to live in.
An Architecture of Matter
Pigmented exposed concrete defines both structure and character. Poured and left visible, it carries the qualities the project is after: robustness, solidity, permanence and tectonic precision, with the colour worked into the material rather than applied to it. Timber, natural stone and mineral stucco introduce warmth and texture against it, and zinc accents complete the palette. All of it stays within neutral tones, which is what allows the materials to register as matter rather than as finishes.
The decision matters beyond appearance. Exposed concrete leaves no margin for correction: formwork, joints, pour sequences and the position of every tie become permanent parts of the architecture. A house resolved this way is a statement about how it was built, not only about how it looks.
Horizontality, Shadow and the Shape of the Plan
The composition is strongly horizontal, developed across a series of overlapping planes that generate a play of volumes rather than a single mass. Recessed façades draw lines of shadow into the built form, and those shadows do real work in how the house is perceived: they soften the reading of its weight, break the horizontal into rhythm, and give the elevations a depth that changes as the sun moves.
This is where the coastal light becomes a material in its own right. Under the flat, bright conditions of this stretch of the Atlantic, a flush façade tends to read as a plane. A recessed one reads as depth.
The same reasoning governs the plan, which is organised as an L. Towards the street it forms a contained edge, giving the house privacy without resorting to a defensive wall. Towards the southwest it opens broadly onto the garden and pool, taking the best of the afternoon light. The two arms of the L hold the outdoor space between them, so the garden is not a leftover area around the building but a room the building defines.
Opacity, Transparency and the Life Within
The contrast between opacity and transparency is not a formal gesture. It is the organising principle of life within the house. Inside, the programme rests on a clear distinction between the public and the private. The social areas extend naturally towards the exterior through generous glazed openings and covered terraces, fusing interior with garden and with the particular Atlantic light of this coast, while the private rooms turn inwards.
Read against the L shaped plan, the logic becomes clear: opacity where the house meets the street, transparency where it meets its own garden. The project's own brief puts it plainly, describing a closed façade on the side of the public road and an exposed façade on the side of the coast.
Closed, here, does not mean blank. The approach runs between two concrete planes into a timber lined recess, and the courtyards that punctuate this side open to nothing but the sky. Arrival is a sequence of compression and release, so that the opening towards the garden, when it finally comes, reads as a release rather than a given.
The private side of that distinction is resolved differently. The bedroom wing is conceived as a sequence of more introspective spaces. Each room is articulated around a private courtyard that frames fragments of sky and vegetation, securing privacy without giving up natural light. It is a solution that does more work than a window onto a garden would: the courtyard belongs to the room, so the light it brings in is the room's own.
Above, the upper floor accommodates the master suite and a workspace, both connected to a generous covered terrace overlooking the landscape and the green roof below. Below, the basement takes the technical areas, parking and an ample leisure and games zone, daylit through a system of carefully positioned courtyards. Keeping the served and the serving parts of the house cleanly separated leaves the ground floor free to be dedicated to living.
Mediterranean in Spirit, Contemporary in Resolution
Landscape integration was handled in symbiosis with the built volume rather than after it. Existing vegetation was preserved wherever possible, and the planting strategy favours native species, low in maintenance and adapted to the local climate. Gardens, terraces and courtyards are designed as extensions of the architecture rather than as its surroundings, which is consistent with the plan: much of the outdoor space here is architectural space, held between built arms or enclosed by walls.
What holds the project together is the coherence between the material decision and everything that follows from it. Pigmented concrete sets the character, the recessed façades manage its weight, the L shape turns opacity and transparency into a way of living, and the courtyards let a heavy house stay full of light. The result is a contemporary Mediterranean architecture, sensitive to its context, grounded in material authenticity and shaped by the light and landscape of the Cascais coast. Whether a house like this ages into its setting or merely stands in it is a question only time on the Atlantic coast will answer, and exposed concrete is unusually honest about the result.
