FCC Arquitectura Expands a Portuguese Granite House with a Board-Marked Concrete Wing

Most house extensions in rural Portugal take one of two routes: they imitate the original, or they ignore it. JV House, completed in 2015 by FCC Arquitectura, takes neither. The brief combined two jobs. The first was to alter an existing residence and clean it up so that its original character could come through again. The second was to expand it to hold a much larger program. The finished house covers 682 m², and the expansion is unmistakably new: a concrete volume cast against timber boards and raised over a carport, set beside a white-rendered house with a tiled roof and a granite base.

What interests us is how the project reads as two acts that depend on each other. By stripping the older house back first, the architects give the concrete a clear partner to answer, so the addition does not have to compete with layers of past alterations. The result is a compound of courtyards, cobbled passages, stairs and a pool. Granite works as the shared ground under both the old and the new, which is a quieter achievement than the concrete but probably the more important one.

A Concrete Volume Beside a White House

The extension lifts its mass above the ground floor, so the carport underneath stays open and the volume above reads as a solid block. The board-marked surface matters here. Timber shuttering leaves a grain on the concrete that softens what could otherwise be a blunt intrusion, and it links the new work to the timber used elsewhere in gates, decks and cladding.

Seen from the garden, the two buildings sit side by side without any connective tissue that tries to blend them. The white house keeps its tiled roof and familiar silhouette, and the concrete stays flat, grey and abstract. Objects in the foreground, a rusted iron wheel on a round stone base and a bare tree stump among the cobbles, suggest that the site's agricultural past has been kept in view rather than tidied away.

Restoring the Original Shell

The clean-up of the existing house is visible in what has been left out. A granite staircase climbs to an arched entrance, a planted stone balcony projects from the white facade, and the walls carry little ornament beyond the junction of render and stone. That restraint lets the masonry base and the whitewashed upper volumes speak plainly, which is exactly what a restoration of this kind should allow.

Where new elements touch the old house, they are kept small and specific: a timber-clad entrance bay, a timber pergola over a terrace. Planted terraces step down to a cobbled forecourt, so the house sits within a series of outdoor levels rather than on a single flat lawn. A pruned dead trunk inside a planted circle is kept as a sculptural marker, a choice that says something about the attitude to the site.

Courtyards and Narrow Passages

Some of the best moments in JV House happen between buildings. A whitewashed courtyard with a lattice chimney and a slatted timber gate feels lived in, with a potted palm and a small dog on the granite paving. Close by, a narrow cobbled passage runs between two board-marked concrete walls, one of them pierced by a dark timber door.

That passage is a strong piece of spatial compression. It takes the language of a village lane, cobbles underfoot and sky in a slot overhead, and builds it out of the new material. You move from the open garden into something tight and shaded, then out again. Moments like this make the concrete feel like part of the place rather than a showpiece placed on it.

Stairs Lit Through Slats

Inside the extension, vertical circulation gets serious attention. One stair runs against a board-marked concrete wall, with timber treads and open risers carried on steel stringers, and it takes light from a louvered glass window. The open risers keep the stair visually light against the heavy wall, and that contrast is the point.

At a wooden landing, a slatted window frames a distant chapel and a bare tree. That view says more about the house's relationship to its context than any facade does. The slats filter the outlook into strips, so the landscape is edited rather than shown in full, and climbing the stair turns into a small act of orientation toward the surrounding territory.

A Pool Set Into the Granite

The pool continues the palette instead of adding a new one. Speckled granite coping meets dark grooved composite decking at a crisp corner, and timber decking runs along the water's edge. The surface reflects trees, the white pavilion and the tiled roof, so the pool doubles as a mirror for the restored architecture around it.

We would argue the detail at the coping is where the project shows its discipline most clearly. Granite, already the base of the old house, is carried into the newest outdoor element, and the decking ties back to the timber in the gates and stairs. Nothing here is decorative for its own sake.

Plans and Drawings

The three site plans show building footprints scattered across an irregular plot, with the pool picked out in pale green and trees spread throughout. Read together with the view of the rectangular pool in front of a single-storey, terracotta-roofed house set among palms and lawn, the drawings confirm that this is a cluster of structures and open spaces rather than a single object. The plot's irregular edges shape the arrangement, and the pool acts as an orthogonal anchor within it.

Why This Project Matters

JV House offers a useful model for the many family properties in Portugal that have grown piece by piece and now need more room. Its sequence is the lesson: restore the original honestly first, then add in a material that does not pretend to be old. The board-marked concrete is frank about its date, but its grain, its scale and its shared granite ground keep it in conversation with the house it serves.

The project also shows that the most convincing moments in a residential expansion are often not the facades but the spaces in between: a cobbled slot between concrete walls, a stair that frames a chapel, a courtyard with a chimney and a dog. For FCC Arquitectura, a practice based in Felgueiras, the house reads as careful regional work, attentive to what already exists and confident about what it adds.

JV House by FCC Arquitectura, Portugal. Area: 682 m². Completed: 2015. Photography: Bruno Barbosa.

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