The internal height of the house meets the current interior height requirements and the dimensions of the tatami mats measure, in the former shakkanho system (old Japanese measuring system), 6 shaku 3 sun (190.89 centimeters) long and 3 shaku 1 sun 5 bu (95.445 centimeters) wide being equivalent of that for Kyoma tatami used today.
内方高さが現行内方高さに合っており、畳寸法についても旧尺貫法で長さ6尺3寸、巾3尺1寸5分の現行京間の畳が使われている。