Therefore, the style of houses were uniformed, but the dimensions of tatami were different depending upon the regions of Kinai, Chukyo (countries around Nagoya) and Kanto, which led to the difference of the width of a room depending on the regions as the ratio of 'Chukyo-ma' (the room in the Chukyo Region) was 0.9 and the one of 'inaka-ma or edo-ma' was 0.85 against the 6 jo width of 'Kyo-ma.'
このため、住宅は画一化された様式となり、また畿内、中京、関東地方でそれぞれ畳の寸法が異なり、「京間」の六畳に対して、「中京間」は約0.9「田舎間、江戸間」は0.85の広さと、地方によって部屋の広さが異なるようになっていった。