What Is the Former Matsui Family Residence Main House?

The Former Matsui Family Residence Main House is a thatched farmhouse of the late Edo period (1830 to 1867) that once served as a teahouse on the old Sanyō Road, now standing in Kanbayashi, Soja City, Okayama Prefecture, and registered as a Registered Tangible Cultural Property of Japan on October 2, 2007.

In Japanese it is 旧松井家住宅主屋 (Kyū Matsui-ke Jūtaku Shuoku). The Agency for Cultural Affairs reads the last word as shuoku, while Okayama Prefecture's information sheet gives omoya; both simply mean "main house."

The house did not start out in Soja. It was built beside the old Sanyō Road at Numa, in what is now Higashi Ward, Okayama City, as a farmhouse that also sold tea and rest to people on the highway. In 1972 it was taken down and rebuilt on its present site so that it could be preserved. Okayama Prefecture owns it today.

Why the Former Matsui Family Residence Main House Is Registered

The Former Matsui Family Residence Main House is entry 33-0161 in the national register, added in the 56th round of registrations under the criterion of having become a model of design. The agency records a single-storey timber house with a thatched roof and a building area of 60 square meters.

The frame is 5 bays long (Ketayuki) and 3 bays deep (Harima). Above it sits a hipped roof (Yosemune-zukuri) of thatch (Kayabuki), with the entrance on the long side (Hirairi). Narrow tiled eaves (Hisashi) are added along the front and the back, below the thatch.

Inside, the right half as you face the house is an earthen-floored work area (Doma). The left half holds the living rooms, laid out as four rooms whose partitions do not line up, a staggered version of the farmhouse plan known as Yomadori. There is no veranda. The agency's assessment is short: the Former Matsui Family Residence Main House preserves a plain, uncomplicated form of farmhouse building. That plainness is the point. It shows what an ordinary roadside house looked like, rather than the home of a wealthy family.

Soja City points out that the simple plan hides some careful thinking about comfort. Straw and earth laid over the ceiling insulate the rooms below the thatch, and openings around the doma let air move through the house.

What to Look For at the Former Matsui Family Residence Main House

Thatch above, tile below

Stand back and look at the roofline of the Former Matsui Family Residence Main House. The thick thatch rises to a single ridge, and the thin band of tiled eaves at the front and back cuts across its lower edge. The tile was a practical addition: it keeps rain off the walls and doorways where people came and went.

The earthen floor on the right

From the front, the doma is on your right. In a roadside teahouse this would have been where travelers could step in without taking off their sandals, so the layout suits the house's working life as well as its farm life.

A compact house beside a grand one

The Former Yamate Village Office next door makes a useful comparison. Okayama Prefecture lists it at 7.5 by 5 bays with a hip-and-gable roof (Irimoya-zukuri), built for the doctor who became the first village head. The Former Matsui Family Residence Main House, at 5 by 3 bays with a simple hipped roof and no veranda, is the everyday counterpart. Seeing the two side by side shows the range of rural houses in this part of Okayama in the 19th century.

Visiting the Former Matsui Family Residence Main House

The Former Matsui Family Residence Main House stands next to the Former Yamate Village Office, at the foot of the steps below the Soja Kibiji Bunkakan museum. The front of the house, with the doma on the right, is the side to start from; walk around to the back to see the second band of tiled eaves.

Official sources do not say whether visitors may step inside the Former Matsui Family Residence Main House, and no photography policy is published, so follow any notices on site. Viewing hours and directions for both houses are gathered on the page for the Former Yamate Village Office and Former Matsui Family Residence.

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Q&A

QWhen was the Former Matsui Family Residence Main House built and registered?
AIt dates from the late Edo period (1830 to 1867). It was registered as a Registered Tangible Cultural Property on October 2, 2007, as entry 33-0161.
QWhy is the Former Matsui Family Residence Main House in Soja if it was built in Okayama City?
AIt originally stood beside the old Sanyō Road at Numa in present-day Okayama City, where it was used as a teahouse. It was moved to its current site in Kanbayashi, Soja, in 1972 to preserve it.
QCan visitors go inside the Former Matsui Family Residence Main House?
AOfficial sources do not say. The exterior can be seen during the posted viewing hours; follow the notices on site for the interior and for photography.
QHow was the Former Matsui Family Residence Main House kept comfortable?
AAccording to Soja City, straw and earth over the ceiling insulate the rooms, and openings around the earthen-floored doma provide ventilation, despite the very simple plan.
QHow does the Former Matsui Family Residence Main House differ from the Former Yamate Village Office next to it?
AThe Matsui house is a small farmhouse of 5 by 3 bays with a hipped thatched roof and no veranda. The Yamate office, the former home of the first village head, is larger at 7.5 by 5 bays and has a hip-and-gable thatched roof.

Basic Information

NameFormer Matsui Family Residence Main House (旧松井家住宅主屋)
Location1208-2 Kanbayashi, Soja City, Okayama Prefecture
DesignationRegistered Tangible Cultural Property (Building)
Year DesignatedRegistered October 2, 2007
Quantity1 building
DimensionsSingle-storey timber building, thatched roof, 5 bays by 3 bays, building area 60 square meters
OwnerOkayama Prefecture
Public AccessOpen for viewing during posted hours (see Visiting)

References

Database of National Cultural Properties (Agency for Cultural Affairs): Former Matsui Family Residence Main House
https://kunishitei.bunka.go.jp/bsys/maindetails/101/00006412
Okayama Prefecture: Registered Cultural Properties in Okayama Prefecture
https://www.pref.okayama.jp/page/detail-50777.html
Okayama Prefecture: Information Sheet, Former Matsui Family Residence Main House (PDF)
https://www.pref.okayama.jp/uploaded/attachment/261001.pdf
Okayama Prefecture: Information Sheet, Former Yamate Village Office (PDF)
https://www.pref.okayama.jp/uploaded/attachment/261002.pdf
Soja City Cultural Properties Division: Former Matsui Family Residence Main House
https://www.city.soja.okayama.jp/soshiki/26/2958.html

Last verified: 2026.10.03