House in Utsunomiya is for parents and their son. They desired a commodious “doma” (dirt floor) and a flow line to their parents’s house neighbored on the south. The site faces the street northerly and is surrounded by four houses in other sides. Light was able to come through from the south side through small void between the other homes.
We arranged the doma at the center of the site and made it pass through the house. The three-storied doma with three large windows brings in natural light into the next four rooms; living room; dining room; master bedroom; and guest room. On the other hand, the doom is the penetrating void connected to the void of the south outside. So the floor of the doma is troweled with the charcoal mixed concrete as well as of outside, and the wall lightness level is brought closer to external wall. Some rooms are connected with the doma, and once the Japanese shoji (sliding paper screens) is opened, all rooms become one. The two stairs in the doma are made of light steel rods and laminated timbers, which prevent the relations between some rooms from disconnected.