In Shimada City in Japan, mA Style Architects completes a detached house whose cedar-clad exterior reads as a closed volume while the interior organises around a top-lit courtyard threaded with a living tree.
From the road, the house presents as a long cedar-clad gable with no windows. The surface is tongue-and-groove vertical boarding, honey-toned and uniformly tight, broken only by a concrete plinth and a service unit near the street edge. The roof ridge runs clean to both ends. Nothing in the exterior discloses what is happening inside, and that opacity is the argument.
Inside, the house opens to a courtyard running the full length of the plan, roofed with a glass ridge skylight that follows the pitch of the gable. The structural logic is plain and exposed: a grid of cedar beams and posts supports both the shelving units and the glazed roof, so the elements that hold the house up are also the walls of every room. The cedar grid divides without partitioning, which means the interior reads as a single continuous volume even when it performs as a series of distinct spaces.
The light falls from above and from the courtyard, not from any exterior wall. In the section views, the ridge glazing fills the apex of the gable entirely, making the ceiling the most active surface in the house. Cedar beam flanges cast shadow grids across the polished concrete floor of the courtyard. A tree grows up through that floor, its canopy reaching the middle of the glazed zone; the metal stair rises alongside it, their silhouettes overlapping. The integration feels less like a design decision than like an outcome of the structural system being taken seriously all the way through.
The long desk that runs under the south-facing shelving works because of the diffuse overhead light. Plants are placed on the shelf modules with attention, and the whole thing has the quality of a workshop that happens to be a home: tools and books accessible, no surface finished in a way that makes it feel precious. The kitchen, visible through the courtyard, shares the same material language, stainless steel countertop against cedar frame, concrete against glass.
mA Style have described the house as a study in enclosure and privacy without darkness. The project makes good on that intention by refusing to make privacy a function of thick walls or opaque surfaces. The courtyard is the room. Everything else is partitioning within it.
