On a plot in Aichi in Japan, hemmed by a busy road to the north and two vacant lots slated for building, Ryota Sekiya builds Single Family House in Aichi, a cedar frame that manufactures its own light.
The brief begins with an absence. When Sekiya drew the plans, the lots to the east and south stood empty, waiting on houses whose height and mass no one could yet name. Rather than gamble on borrowed sun that might arrive or might be walled off, he decided to make a daylight the neighbors could not touch. The house shifts south, surrenders the uncertain southeast Light, and turns inward on itself.
At the center sits a low-ceilinged living room, dim and cocoon-like, pressed under a solid slab of ceiling. To its north and south open two voids cut straight to the sky. Together they swallow nearly half the footprint, a startling amount of a small house given over to nothing but air and light. What holds it up is the ceiling itself: three layers of beams crossed into a lattice that distributes load and locks the frame against horizontal drift. Look up in the tall rooms and the structure reads as a woven grid, cedar members lapped and pegged where they meet.
Skylight enters high and strikes this lattice before it ever reaches the floor. The beams catch it, scatter it, throw soft bars of shadow that travel across the day. Sekiya frames the idea plainly. To see light hanging in front of your eyes, he writes, something must reflect and absorb it, the job dust in the air usually does; here that work is enlarged to the scale of the structure and handed to the timber. The lattice runs unbroken from the entrance and the dining-kitchen out toward the front and main gardens, so interior and exterior read as one long field of light and shade.
The material demanded quantity: roughly 60 cubic meters of timber, which after milling losses means over 100 cubic meters of raw log, close to 300 trees. All of it was naturally air-dried, a slow rarity that keeps the Wood's oils while shedding only moisture, leaving a fine luster you can read in the pale cedar walls. Sekiya prepared the stock from the basic design stage with merchants who specialize in air-dried wood, and a carpentry firm that owns its forest and manages everything from planting to felling. The frame is cut by hand, joined without metal fittings.
He offers a term for the discipline behind it: fueki-ryuko, holding to what is essential while staying open to change. Air-dried timber is fading from the trade, too slow and too demanding of storage space to survive a market built on speed. A house like this argues quietly for its return, and for the kind of dim, settled room such wood is still able to make.
