01 / Post town
The top-ranking guest roomwas cut off from the main house.

After the great fire of Kaei 2 (1849), the head of the family, Sato Hikogoro, rebuilt it in Genji 1 (1864). The jodan-no-ma, the guest room of the highest rank it originally had, was cut off from the main house and moved elsewhere in 1893 (Meiji 26). In February 2024 a Tokyo council recommended adding it to the designation.
- Tokyo Metropolitan Historic Site (March 2010)
- Rebuilt in Genji 1 (1864)
- Addition of the jodan-no-ma recommended (February 2024)

