Nishio Family Residence Annex: A Late-Edo Wing on the Old San'in Highway

At the northeast corner of the Nishio family grounds at Oyamagami in Tamba-Sasayama, Hyogo, a low wing runs east to west along the line of the old San'in highway. This is the annex (hanare), a late-Edo building of the late eighteenth to early nineteenth century. It measures five and a half bays by two and a half, a single-storey structure with a gabled tile roof and a lean-to (geya) added along the south face. The western span, about one and a half bays, drops to a lower roofline, a stepped-down form the Japanese call ochimune.

The Nishio were a sake-brewing household, running the Homei brewery that dates its founding to 1797, and the family also served as village headmen. An annex like this was a wing set slightly apart from the main hall, the kind of room used for a guest, for retirement, or for a quieter corner of family life away from the working core of the house.

Part of the entrance garden

The annex does not stand alone. Between its southern end and the northeast corner of the main hall the family set a service gate (tsuyomon), and the annex, that gate and a stretch of wall together shape the front garden that a caller crossed on the way in. The building is listed together with its own service gate and wall.

Why the Annex Was Registered

The annex joined the Registered Tangible Cultural Property list in July 2004, under the criterion for a building that contributes to the historic landscape of the country. This register, created in 1996, is a lighter framework than the designation given to Important Cultural Property (juyo bunkazai) and National Treasure (kokuho), and it is well suited to buildings that earn their place through the setting they help form rather than through singular grandeur.

Reading the roofline

The value here is quiet and worth slowing down for. The main roof holds its gable, then the western span steps down, and the south lean-to reaches out lower still, so the building falls in stages rather than presenting one flat mass. That descending profile keeps the wing from crowding the entrance approach and lets the annex sit in scale with the garden it borders. Along the old highway, this modest, well-proportioned wing is one of the pieces that gives the frontage its rhythm.

What to Look For on a Visit

Trace the roof from east to west. You will see it come down in steps, the lower western span and the south lean-to breaking the line so the eye reads three heights, not one. This is the sort of adjustment a builder made to fit a wing into a tight corner without letting it loom.

Find the service gate at the west end. It sits in the gap between the annex and the main hall, a working entrance rather than a formal one, and it explains how the household moved between the front garden and the inner grounds.

Then stand back at the approach and take in the group. The annex, its gate and wall, and the main hall beyond frame the entrance garden together. Seen from the old highway, the wing is a small but load-bearing part of the view, the human-scaled edge of a compound better known for its tall sake stores.

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Q&A

QWhen was the annex built?
AIn the late Edo period, between the mid-eighteenth and early nineteenth century. It was registered as a Tangible Cultural Property in July 2004.
QWhat is a hanare, or annex?
AA wing set a little apart from the main hall of a Japanese house, often used for a guest, for retirement, or for quieter family rooms away from the busy centre of the household.
QWhat does the stepped roofline mean?
AThe western span drops to a lower roof, a form called ochimune, and a lean-to reaches out along the south. The staggered heights let the wing fit a corner site without overwhelming the entrance garden.
QIs the service gate part of the same listing?
AYes. The annex is registered together with its service gate and a length of wall, since the three shape the front garden as one composition.
QCan I go inside the annex?
AThe annex stands within the Homei brewery grounds, now open as the Horoyoi Jokagura museum. Interior access varies, so check the operator's current hours before visiting.

Basic Information

NameNishio Family Residence Annex (Nishio-ke Jutaku Hanare)
Location699 Oyamagami, Tamba-Sasayama City, Hyogo Prefecture
CategoryRegistered Tangible Cultural Property (Building)
Registration date23 July 2004 (gazetted 17 August 2004)
Registration number28-0183
PeriodLate Edo period (1751–1829)
StructureTimber, single storey; tile roof; floor area 50 sq m; with service gate and wall
Count1 building
Registration criterionContributes to the historic landscape of the nation
OwnershipPrivate (Nishio family / Homei brewery)

References

Agency for Cultural Affairs, National Cultural Properties Database — Nishio Family Residence Annex
https://kunishitei.bunka.go.jp/bsys/maindetails/101/00004281
Cultural Heritage Online — Nishio Family Residence Sake Storehouse
https://bunka.nii.ac.jp/heritages/detail/189010
Tamba-Sasayama City Tourism — Horoyoi Jokagura brewery tour
https://tourism.sasayama.jp/course/course-145/

Last verified: 2026.07.09