Additionally, the first townspeople (residential) zone was designated north of the outside of the Tokiwa-bashi Gate and Nihon-bashi bridge (an area designated for the habitation of merchants and artisans) (It is thought that the course of Hira-kawa River stretching towards Hibiya inlet was diverted to pass through Edo Maejima.)
また、元からあった平地である今の常盤橋門外から日本橋の北に最初の町人地が設定された（この時と時期を同じくして平川の日比谷入江から江戸前島を貫通する流路変更が行われたと思われる）。