These were wooden buildings with tiled roofs (Many being in the yosemune-zukuri style and irimoya-zukuri style. Crucifixes were mounted on the tops of the roofs) and they contained tatami mats, sliding doors, sliding panels and engawa verandas.
すなわち木造瓦屋根（多くは寄棟造または入母屋造。屋根の頂上には十字架が乗せられた）の建物で、畳、襖、障子、縁側が用いられた。