Drawn by an Architect Just Back from Europe
The Former Sumitomo Besshi Mining Company Foreign Engineers' West Residence (旧住友別子鉱山株式会社外国人技師西社宅) is a two-storey timber house in Western style at Hoshigoecho in Niihama City, Ehime Prefecture, completed in 1930 and entered on the national register as a Registered Tangible Cultural Property on 17 August 2020. Its building footprint is 130 square metres and its total floor area 300 square metres. It stands on the high western edge of the Sumitomo Yamada company housing estate, paired across a road with the East Residence.
The drawings came from Ogawa Yasuichiro, an architect in the building section of Sumitomo Goshi Kaisha in Osaka. Ogawa left the design course at the Kyoto Higher Technical School of Arts and Crafts in 1907 and joined Sumitomo's building department straight away, spending his career there. Around Osaka and Kobe he designed houses for Sumitomo directors and for businessmen, among them the residence of the collector Ikenaga Hajime, now the Kobe City Archives.
The timing repays attention. In 1929 Ogawa was sent to Europe for eight months to study current practice in construction, building services and furnishing. The plans for this house and its eastern twin followed soon after he came home. The builder was Fujiki Komuten of Osaka, a firm whose own history records taking a contract for foreign staff housing in Niihama in 1928 and making the town its base in Shikoku from then on.
A Gabled Roof and a Hipped Sunroom
The two houses are usually spoken of as a pair, but their roofs part company. The main roof of the Former Sumitomo Besshi Mining Company Foreign Engineers' West Residence is gabled, Kirizuma-zukuri, laid with Sangawara-buki pantiles. The gable ends face east and west, so from the road the visitor looks up at a triangle of wall. The eastern house, hipped on all four sides, presents nothing so sharp.
A sunroom projects from the south front under a hipped roof of its own, which puts two different roof forms on one small building. The service wing on the west side is covered by a single pitch falling one way, another point of difference from the low wing attached to the eastern house. The walls of both are Shitami-itabari, painted weatherboard.
The plan follows the eastern house closely: a large corner room with three further rooms turning off it in an L. Everything is simply a size down. Set against 196 square metres of footprint next door, the 130 square metres here is about a third smaller. Sumitomo's housing regulations fixed floor area by an employee's rank, and the difference between two houses by the same architect in the same year is unlikely to be accidental.
The Value of Having Been Left Alone
The house was registered under the criterion for buildings that set a standard of design, with registration number 38-0146. It was announced on 17 August 2020 in the 96th round of registrations, alongside the eastern house at 38-0145 and six other buildings on the estate.
There is a second kind of value here, harder to read off a register entry. After the war the eastern house was turned over to executives posted to Niihama alone and its interior was rebuilt as separate tatami rooms. The western house met the same demand differently: a Japanese annex was added beside it, and the Western block itself was left largely untouched. Niihama City's conservation plan singles it out as the building that best preserves its original condition.
As for why a Japanese copper company needed houses for foreign engineers in 1930, the answer lies in the year before. In 1929 the first phase of a sulphuric acid plant using the process of the German chemist Hugo Petersen came into operation, the long-sought answer to the smelter fumes from Shisakajima island, and Petersen visited the works that August. In November the Sumitomo fertiliser company engaged engineers from the American firm NEC, and an ammonia and ammonium sulphate plant was finished in December 1930. A mining company was moving into chemicals and heavy machinery, and it had to house the specialists it brought in, families included.
The Yamada estate was laid out from 1929 and grew to some 290 houses at its height. People went on living in them for about eighty years, until roughly 2008; then age and revised earthquake standards brought demolition, and by August 2018 only 34 remained. Six of those were chosen for preservation, and this is one of them.
Visiting
The Former Sumitomo Besshi Mining Company Foreign Engineers' West Residence joined Niihama City's limited opening programme in April 2026, bringing the number of houses that can be entered to four. It opens every Sunday from April to November, and on the 2nd and 4th Sundays from December to March, in both seasons from 10:00 a.m. to 12:00 noon. Admission is free and no booking is required. Openings are sometimes altered or suspended as restoration work proceeds.
Groups of 5 or more should reserve at least 2 weeks ahead, by telephone or email, with the city's Besshi Copper Mine Cultural Heritage Division on 0897-65-1236. Rules on indoor photography vary from house to house, so check with the staff when you arrive.
The address is 19-2 Hoshigoecho, Niihama City, given in the national register under the older land description as 1900 Hoshigoecho. Niihama Station on the JR Yosan Line lies about 2 kilometres to the east, roughly a 30-minute walk, and there is free parking. The eastern house is directly opposite, and the superintendent's residence and the Sumitomo Chemical executive house open on the same days. Seeing all four in one morning is the best way to read the differences in roof form and plan.
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Q&A
- Can you visit the Former Sumitomo Besshi Mining Company Foreign Engineers' West Residence, and what does it cost?
- Yes, since April 2026. Opening is every Sunday between April and November, and the 2nd and 4th Sundays between December and March, in each case from 10:00 a.m. to 12:00 noon. There is no charge. Dates may shift while restoration work continues.
- How do you get to the Foreign Engineers' West Residence in Niihama?
- The address is 19-2 Hoshigoecho, Niihama City. It is about 2 kilometres west of Niihama Station on the JR Yosan Line, roughly a 30-minute walk, and free parking is available on site.
- Who designed the Foreign Engineers' West Residence?
- Ogawa Yasuichiro of the building section at Sumitomo Goshi Kaisha in Osaka. He graduated from the Kyoto Higher Technical School of Arts and Crafts in 1907, joined Sumitomo immediately, and spent eight months studying in Europe in 1929. Fujiki Komuten of Osaka carried out the construction.
- How does the Foreign Engineers' West Residence differ from the eastern house?
- Its main roof is gabled rather than hipped, its service wing has a single-pitch roof, and it is smaller: a footprint of 130 square metres against 196 square metres. It also received fewer postwar alterations, so the Western-style block survives much as it was built.
- Do groups need to book the Foreign Engineers' West Residence in advance?
- Groups of 5 or more must book at least 2 weeks beforehand by telephone or email with the Besshi Copper Mine Cultural Heritage Division on 0897-65-1236. Smaller parties need no reservation.
Basic Information
| Name | Former Sumitomo Besshi Mining Company Foreign Engineers' West Residence |
|---|---|
| Location | 1900 Hoshigoecho, Niihama City, Ehime Prefecture |
| Designation | Registered Tangible Cultural Property (Structure) |
| Year Designated | Registered on 17 August 2020 (Reiwa 2) |
| Quantity | 1 building |
| Dimensions | Building footprint 130 square metres; total floor area 300 square metres; timber, 2 storeys, partly single-storey |
| Owner | Niihama City |
| Public Access | Limited opening (mainly Sundays, 10:00 a.m. to 12:00 noon). Admission free. See the text for the full schedule |
References
- Agency for Cultural Affairs, National Cultural Properties Database
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00013462
- Niihama City, Limited opening of four Sumitomo Yamada company houses
- https://www.city.niihama.lg.jp/soshiki/dozan/sumitomoyamadashatakunitouwogenteikoukai.html
- Niihama City, Sumitomo Yamada Company Housing Conservation and Utilisation Plan
- https://www.city.niihama.lg.jp/soshiki/dozan/sumitomoyamadasyataku.html
- Niihama City, The historical significance of the Sumitomo Yamada company housing (PDF)
- https://www.city.niihama.lg.jp/uploaded/attachment/37220.pdf
- Ehime Prefecture, Cultural Properties of Ehime
- https://www.pref.ehime.jp/ehimenotakara/138842.html
- Niihama City, Besshi Copper Mine Cultural Heritage Division
- https://www.city.niihama.lg.jp/soshiki/dozan/
Last verified: 2026.09.04