Inkyojo Retirement House of the Shono Residence

A House Built for Someone Who Had Already Retired

The Inkyojo retirement house of the Shono Residence (庄野家住宅隠居所, Shōno-ke Jūtaku Inkyojo) is a single-storey timber building in Honjo-machi, Saga City, Saga Prefecture, dating from the early Showa period between 1926 and 1945, and listed as a Registered Tangible Cultural Property on 31 October 2022.

The name states its purpose. An inkyojo is a retirement house: when the head of a landholding family handed the household over to his successor, he did not leave. He moved a short distance, into a separate small building on the same grounds, and lived out his years there with his own entrance, his own hearth, and a good room for receiving guests. The main house kept working. The old man kept his standing.

Sixty square metres was enough for that. The plan puts an eight-mat zashiki, the formal reception room, at the east end, fitted with a tokonoma alcove and staggered display shelving. West of it lies a six-mat second room. Verandas run along the north and south sides, and both are closed with sliding glass doors rather than solid rain shutters alone.

The roof is irimoya, a hipped-and-gabled form, laid in sangawara pantiles, and a secondary eave is carried around all four sides of the building. That continuous eave is the reason the glass works. It shades the verandas in summer and keeps rain off the glazing, so the rooms can be bright without being exposed.

Why an Ordinary Showa House Ends Up on a National Register

Nothing here was built for an emperor or a shogun. It was built for a farmer's grandfather. That is precisely the sort of building Japan's registration system was created to catch.

Two systems run in parallel. Designation (shitei) produces National Treasures and Important Cultural Properties, covers a small number of buildings of the highest value, and requires government permission before alterations. Registration (toroku), added in 1996, is a notification system for buildings generally over fifty years old that contribute to the character of the country's landscape. It was designed for houses, shops, warehouses, and schools that are still in daily use, where a strict permit regime would push owners toward demolition rather than repair.

The retirement house holds register number 41-0129 and was accepted under the criterion "a model of design" (造形の規範となっているもの). The Agency for Cultural Affairs closes its assessment by calling it a modern Japanese-style shoin, placing it in the lineage of formal reception architecture that runs from medieval warrior residences through Edo-period temple and merchant halls into the twentieth century.

The building was moved to its present site in 1970, the same year the neighbouring storehouse arrived. The two were registered together in October 2022, along with a stone school gate in Kanzaki City, in the 103rd round of registrations.

Reading the Joinery

The Agency's assessment singles out one thing above all others, and it is not the roof or the plan. It is the kumiko: fine wooden latticework assembled from strips a few millimetres thick, fitted without nails or glue into geometric patterns.

Three places carry it. The shoji screens between the rooms and the verandas are of the gakuiri type, with a framed panel set into the paper field. The ranma transoms above the sliding doors, which ventilate and pass light between rooms, are worked as open lattice. And the shoji of the tsukeshoin, the built-in writing alcove beside the tokonoma that survives as a formal feature long after anyone wrote there, carry the finest work of the three.

Look at kumiko in raking light and the pattern doubles: the lattice itself, and its shadow thrown onto the paper behind. That interaction is the point of the technique. It also explains why this house needed its glass doors and its wraparound eaves. Sunlight arriving direct would flatten the effect; sunlight arriving soft, filtered through glass under a deep eave, makes the joinery legible from across the room.

The setting matters too. The grounds are ringed by water channels, part of the irrigation network that laces the Saga Plain, and the retirement house sits at the northern end with the storehouse to its east.

Visiting: read this before you plan a trip

The retirement house stands on private land owned by the Shono Historical Museum Foundation. No opening hours, admission fee, or visitor route has been published, and there is no sign that the site takes casual visitors. Please do not enter the grounds or photograph over the boundary into a residence.

For accessible architecture of a comparable spirit, stay in the Shironouchi district of central Saga, about fifteen minutes by city bus from Saga Station. The Saga Castle Honmaru History Museum there is a timber reconstruction of part of the castle's main hall, with formal rooms in the shoin tradition; it opens 9:30 to 18:00, closes 29 December to 1 January, and takes donations instead of admission. The Okada Saburosuke Atelier, a timber studio moved from Tokyo and attached to the Saga Prefectural Museum and Art Museum, is also in Shironouchi and is itself a Registered Tangible Cultural Property.