What the Main House Is
The Iwane Family Residence Main House (岩根家住宅主屋, Iwane-ke Jūtaku Shuoku) in Gokenya 2-chome, Tondabayashi City, Osaka Prefecture, is a two-storey timber farmhouse built in the late Edo period (1830 to 1867) and registered as a Tangible Cultural Property on April 18, 2008. It covers 180 square meters under a hip-and-gable roof (Irimoya-zukuri) laid with pantiles (Sangawara-buki).
It stands near the center of the estate, facing south, and everything else on the site grew outward from it. When the inner drawing room was added on its west side in the early Taisho period (1912 to 1925), the main house was altered too.
Tondabayashi City gives its footprint as 9 bays by 4, with a 1-bay lean-to (Geya) along the north side.
A Big Farmhouse Plan
Inside, the Iwane main house divides cleanly into two halves. The east half is an earth-floored work and kitchen area (Doma), and a large old cooking range still stands there. The west half is raised on floorboards and split into five rooms, with a pair of formal rooms in a row along the south.
The Agency for Cultural Affairs believes the house began with a wide doma and a regular four-room plan (Yomadori), the rooms arranged like the character 田. That layout was typical of well-off farming households in the Edo period. A fifth room came later.
Tondabayashi City notes that despite the alterations, the 8-mat formal room and the kamaya, the cooking quarter, keep much of their original form. This is the frame of the family's life as farmers, before sake brewing became the business.
A Taisho Facelift
The roof you would see today on the Iwane Family Residence Main House is the product of a Taisho-era remodeling. According to the city, the second floor was rebuilt with a pantiled hip-and-gable roof at the same time as the inner drawing room went up on the west side.
Those were prosperous years for the brewery. The family built a new wing for receiving guests and brought the old house into line with it, keeping the farmhouse plan inside while giving the exterior a more formal face.
The Agency values the building for preserving the character of a large early modern farmhouse. It was registered under the historic landscape criterion, as register no. 27-0462.
Seeing the Main House
The Iwane Family Residence Main House sits in the middle of the compound, screened by storehouses and walls, so it cannot really be seen from the public road, and the interior is not open. There is at present no opportunity to see the cooking range or the four-room core.
What can be seen from outside are the south storehouse, the gatehouse, the kangobei fence and the gable of the sake brewery. Viewing conditions and directions for the estate are on the Iwane Family Residence group page.
Q&A
- When was the Iwane Family Residence Main House built?
- The Agency for Cultural Affairs dates it to the late Edo period (1830 to 1867), with enlargement and alterations in the early Taisho period (1912 to 1925). Tondabayashi City describes it as believed to date from the late Edo period.
- What is the floor plan of the Iwane Family Residence Main House?
- The east half is an earth-floored doma with a large cooking range; the west half is a raised five-room living area with formal rooms along the south. The original plan is thought to have been a regular four-room layout with a wide doma.
- Why does the Iwane Family Residence Main House have a hip-and-gable roof?
- Tondabayashi City says the second floor was rebuilt with a pantiled hip-and-gable roof in the early Taisho period, when the inner drawing room was added on the west side.
- How large is the Iwane Family Residence Main House?
- It is a two-storey timber building of 180 square meters. The city gives it as 9 bays by 4, with a 1-bay lean-to on the north.
- Can visitors see the Iwane Family Residence Main House?
- No. The Iwane Family Residence is a private home and is not open to the public, and the main house stands in the middle of the grounds, largely hidden from the road.
Basic Information
| Name | Iwane Family Residence Main House (岩根家住宅主屋) |
|---|---|
| Location | 2-1525-1 Gokenya, Tondabayashi City, Osaka Prefecture |
| Designation | Registered Tangible Cultural Property (Building), register no. 27-0462 |
| Year Designated | Registered April 18, 2008 |
| Quantity | 1 building |
| Dimensions | 2-storey wooden building, tiled roof, building area 180 square meters |
| Owner | Private owner |
| Public Access | Not open to the public. Barely visible from the road |
References
- Database of National Cultural Properties: Iwane Family Residence Main House (Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/heritage/detail/101/00007087
- Cultural Heritage Online: Iwane Family Residence Main House
- https://online.bunka.go.jp/heritages/detail/198079
- Registered Cultural Property: Iwane Family Residence (Tondabayashi City, in Japanese)
- https://www.city.tondabayashi.lg.jp/site/bunkazai/2558.html
- Iwane Family Residence Main House, Inner Drawing Room and Sake Brewery (Tondabayashi City, in Japanese)
- https://www.city.tondabayashi.lg.jp/site/bunkazai/2496.html
Last verified: 2026.09.26
