Minimalist Urban Courtyard House

A photorealistic render of a minimalist courtyard house on a dense urban infill site in Tokyo's Setagaya ward, built on a 7m x 12m plot. The two-story house is organized around a central courtyard (3m x 4m, open to sky) that provides all natural light and ventilation to the interior rooms in lieu of exterior windows (the external walls are almost entirely blind to the street and neighboring buildings). Street facade: The north street facade is a single plane of matte black cement fiber board (Nichiha product, smooth surface, 3mm joints at 600mm horizontal grid), 7m wide x 6.5m tall (two stories plus parapet), with a single narrow front door (900mm x 2400mm, 20mm thick solid black-stained oak with a single flat recessed bar handle) positioned off-center to the left. No windows visible on the street facade — entirely opaque. The facade plane is set forward to the property line, creating a compressed relationship with the narrow lane. Courtyard interior: All four interior-facing facades of the courtyard are entirely glazed — floor-to-ceiling sliding aluminum glass doors (frameless glass-to-glass silicone joints, 2400mm tall, fully retractable to one side so the rooms open directly to the courtyard). The courtyard floor: a single slab of polished pale gray concrete with a single rectangular slot drain along one edge. A single specimen tree in the courtyard — a multi-stem Amelanchier (juneberry), approximately 4m tall, in a smooth circular concrete planter (1000mm diameter, 600mm height), the leaves at the delicate pale spring green of early growth, casting dappled shadow across the concrete floor. Interior rooms visible: Ground floor: a single open-plan kitchen-dining-living space visible through the glass, polished white concrete floor continuing from the courtyard, white plaster walls, ceiling in pale birch plywood. Kitchen: a single run of matte black steel cabinetry with a white Corian surface. Dining: a 2000mm x 800mm white oak table, four chairs in pale ash with white canvas seats. First floor (visible through upper glazing): the bedroom — a white platform bed (200mm height), a single desk, shoji-inspired translucent polycarbonate partition screens. Light: The courtyard acts as a light well and outdoor room — sky visible above as a rectangle of blue. The spring afternoon sun enters from the south at approximately 60 degrees, reaching the courtyard floor and reflecting into the ground-floor rooms. The tree casts moving shadow patterns on the concrete floor. Camera angle: Eye-level perspective from inside the ground-floor living space looking out through the open glass doors into the courtyard, with the Amelanchier tree centered in the composition. The opposite glazed facade of the first floor is visible above. Focal length equivalent 28mm. Aspect ratio 3:2. Time of day: 2:30 PM, April spring afternoon.