A Village Officer's House Under a Great Thatched Roof
The family that built this house held the post of kumigashira, a group leader who assisted the headman in running Kaneda village during the Edo period. Their main dwelling, dated by the Agency for Cultural Affairs to somewhere between 1751 and 1829, still stands on its original plot in what is now the Kaneda district of Tsukuba, Ibaraki Prefecture. It sits toward the north-center of the property and faces south onto the road, its long ridge running east to west.
Size alone sets it apart from an ordinary farmhouse. The frontage measures ten and a half ken and the depth six and a half, the ken being the traditional Japanese building module of roughly 1.82 meters. That works out to a footprint of about 222 square meters, all of it under a single hipped roof of thatch. A house of this scale, kept in one piece for more than two centuries, is uncommon in the flat farming country north of Tokyo.
How the Rooms Are Arranged
The plan splits cleanly in two. The western half is a doma, an earthen-floored work space where cooking, threshing, and wet-weather chores were carried out. The eastern half rises onto a raised timber floor divided into four rooms, the layout Japanese architectural historians call yomadori, a four-room grid that became standard for well-off rural households.
One detail marks the house as a product of this particular corner of Ibaraki. Along the south side, in front of the hiroma (the large everyday living room) and the tokonoma (the recessed display alcove of the formal room), runs an irikawa one ken deep. This is a sheltered perimeter aisle, part veranda and part transitional room, set between the interior and the outer edge of the building. The presence of this wide southern aisle is a signature of vernacular houses in the area, and it is one reason the house was singled out for protection.
Stand at the south face on a bright afternoon and the logic of the plan becomes plain. The deep eaves and the aisle keep the summer sun off the rooms while letting low winter light reach far inside. The thatch, close to half a meter thick at the ridge, does the rest, holding warmth in the cold months and keeping the interior cool through the humid Kanto summer.
Why It Carries a Cultural Property Number
The main house was entered in the national register of Tangible Cultural Properties on 12 July 2005, in the forty-sixth round of registrations, under the number 08-0175. Registration is Japan's lighter-touch category of heritage protection, created for buildings that shape the historic character of the landscape rather than for objects of the very highest rank. The stated ground for listing here is exactly that: the house contributes to the historic scenery of its region.
What earns it that status is a combination of age, scale, and regional specificity. The four-room raised floor, the generous doma, and above all the one-ken southern irikawa together preserve a way of building that was once widespread among leading farm families here and has largely disappeared. Because the family's standing as village officers is documented, the house also anchors a wider group of structures on the same plot, three more of which carry their own registrations.
Seeing It as Part of a Whole Compound
The main house does not stand alone. On the same property are three later outbuildings, each separately registered: a rice storehouse and a smaller storehouse from the Meiji era, and a two-story row building from the Taisho years that once served as a workshop and silkworm room. Read together, the four trace how a single farming household expanded and modernized across roughly a century and a half, from the late Edo period into the early twentieth century.
The buildings are privately held, and parts of the compound have been adapted for small-scale commercial use rather than opened as a museum. Anyone hoping to see the exterior should treat the site as private property, keep to publicly accessible viewpoints, and check the current situation locally before making a special trip. For interiors of historic farmhouses in the region that are reliably open to visitors, the folk-house sections of nearby municipal and prefectural heritage facilities are a better bet.
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Q&A
- How old is the main house?
- The Agency for Cultural Affairs dates it to the late Edo period, between 1751 and 1829. An exact construction year is not recorded, so the figure is given as a range rather than a single date.
- What is an irikawa, and why does it matter here?
- An irikawa is a sheltered aisle running along the outer edge of the rooms, between the interior and the eaves. The one-ken-deep aisle along the south front is a recognized feature of local farmhouses and a key reason for the building's listing.
- Can I go inside?
- The residence is privately owned and is not run as a public museum. There is no set admission or visiting schedule for the main house, so any visit depends on the owner and on current local arrangements.
- Is this the same place as Tsukuba Bunka-go?
- No. Tsukuba Bunka-go is a separate site in the Kise district of the city. The Numajiri Family Residence is in Kaneda, at a different address, and the two should not be confused.
Basic Information
| Name | Numajiri Family Residence Main House (Numajiri-ke Jutaku Shuoku) |
|---|---|
| Location | 38-1 Kaneda, Tsukuba, Ibaraki Prefecture |
| Designation | Registered Tangible Cultural Property (building) |
| Registration No. | 08-0175 (46th round) |
| Date registered | 12 July 2005 (gazetted 2 August 2005) |
| Period | Late Edo period (1751-1829) |
| Count | 1 building |
| Structure | Timber, single story, thatched roof; building area approx. 222 m²; hipped roof, four-room raised floor with an earthen-floored doma |
| Access to interior | Privately owned; not operated as a public museum |
References
- National Database of Cultural Properties (Agency for Cultural Affairs) — Numajiri Family Residence Main House
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00004757
- Cultural Heritage Online (National Institutes for Cultural Heritage) — Numajiri Family Residence Main House
- https://bunka.nii.ac.jp/heritages/detail/117837
- Tsukuba City — Protection of Cultural Properties
- https://www.city.tsukuba.lg.jp/soshikikarasagasu/kyoikukyokubunkazaika/gyomuannai/2/1/1001638.html
Last verified: 2026.07.02