This term indicates a nagaya in which the dwelling units, each occupying a space of Kyu(9)shaku (approx. 2.7 m) in frontage by ni(2)ken (approx. 3.6 m) in depth, were placed in a row.
間口が9尺（約2.7m）、奥行きが2間（約3.6m）の住戸を連ねた長屋を九尺二間の長屋と言う。