Casa Meco sits on a triangular 13,850-square-meter plot near the village of Meco, on Portugal's Setúbal coast. The house itself occupies a 21-meter square footprint, one story high, organized as a centralized plan around a large living room at its core. From this central space, all other areas of the house derive.

The plan is composed of 4 bedroom clusters, one at each corner of the square footprint. Each cluster contains an entrance and dressing area, a bathroom, and the bedroom. Between these corner volumes, 3 terraces open toward the east, south, and west, serving as transition zones between the garden and the interior. The north facade handles the technical program: wash closet, cloakroom, pantry, and utility room. The kitchen is part of the living area, with a cooking station and a large preparation island. The entrance is on the north facade and opens directly into the central living room, which then opens outward through large windows on 3 sides.

The building's structural logic follows from its spatial organization. A large roof is supported at its 4 corners by the volumes that contain the private rooms, leaving the common areas between them open to the landscape without internal columns. Exterior terraces cut into the quadrangular footprint and are shaded, creating intermediate zones between inside and out. A 15-by-5-meter swimming pool sits in a clearing to the south.

The diagonal path through the house reveals a graduated sequence of intimacy. From the garden, movement passes through the semi-private terrace into a bedroom vestibule, then opens into the large central living room, before inverting again as one crosses to the opposite corner. The areas are not divided by walls; the landscape itself serves as the boundary.