Mandai Family Residence Main House

What the Mandai Family Residence Main House Is

The Mandai Family Residence Main House is a Japanese-Western house built in 1939 in Harimacho, Abeno Ward, Osaka, and was registered as a national Registered Tangible Cultural Property on December 5, 2007.

In Japanese it is Mandai-ke Jūtaku Shuoku (萬代家住宅主屋), written with the older form of the first character. Osaka City refers to the property simply as the Mandai family house. The Agency for Cultural Affairs records it as a two-storey timber house with a tiled roof and a building area of 186 square meters, designed and built by Takahashi Kōmuten, a contracting firm run by Takahashi Keiichi.

Harimacho is one of the residential districts laid out on the edge of the old city as people poured into central Osaka from the late Meiji period onward. The Mandai house stands at the northern tip of land developed by the Hannan land readjustment project in the early Shōwa years. Osaka City notes that the old Osaka Higher School once stood just to the north, giving the neighborhood the character of a school district. The Mandai plot runs long from east to west and is larger than its neighbors.

Why the Mandai Family Residence Main House Was Registered

The house was registered under the criterion that it contributes to the historic landscape of the country, with registration number 27-0432. The registration was published in the official gazette on December 19, 2007.

The Agency for Cultural Affairs describes the Mandai Family Residence Main House as a comparatively large house in a district created by land readjustment. Its main block is planned around a central corridor and finished outside in the Japanese manner, with plastered walls that hide the posts. East of the entrance is a Western-style room clad in stone with rusticated finishing, and a storeroom in the northwest corner serves as the family's kura. The builder's filed construction notice also survives, which means the origin of the house is documented rather than guessed at.

Osaka City adds that pairing a Japanese wing with a Western reception room was a common arrangement around 1939, and that the house is valuable partly because the neighborhood around it has changed so much since.

Reading the Facade

The main house sits back from the road behind two tall boundary walls. To the west is a Japanese-style wall faced with charred cedar boards; to the east, a rendered Western-style wall. The building behind follows the same split: a two-storey Japanese wing stands behind the Japanese wall, and a single-storey Western reception room behind the Western one. The organizers of Open House Osaka describe the house as Japanese on the west and Western on the east in both wall and building, with stone-clad gateposts tying the two halves together. That side-by-side contrast is the first thing to look for from the street.

The Osaka Cultural Properties Navi, run by local architects' groups, points out that the roof mixes Irimoya-zukuri and Kirizuma-zukuri forms. Inside, a central corridor organizes the rooms, the entrance hall has an earthen-level floor laid with small ceramic tiles, and the Western reception room has stone-faced exterior walls and a marble mantelpiece. The same source notes that the house also reflects its wartime moment, when the use of iron and steel in building was restricted.

The 2020 Facade Work

In fiscal 2020 the Mandai Family Residence Main House was refreshed with support from an Osaka City program that helps owners restore historic building frontages. Weathered walls and fittings were repainted in colors close to the originals, the Japanese boundary wall was re-clad in charred cedar matched to the posts, and the Western wall was repaired where it had cracked and repainted to match the house. What you see from the road today is the result.

Visiting the Mandai Family Residence Main House

The Mandai Family Residence Main House is a private home and is normally closed to the public; the Osaka Cultural Properties Navi lists it as not open for visits. The exterior can be seen from the road, but you cannot enter the gate or the grounds.

The interior has been shown only during Open House Osaka (Ikiteru Kenchiku Museum Festival Osaka), the city-wide architecture weekend held in late October. The house joined in 2024. On October 25, 2025, it offered two guided tours led by a specialist, each limited to 10 people chosen by lottery from advance applications; photography inside the building and posting interior photos online were not allowed. As of October 3, 2026, the published program list for Open House Osaka 2026 (October 24 and 25) does not include the Mandai house, so check the festival website each year.

On a map, the house is about 600 meters from Nishitanabe Station on the Osaka Metro Midōsuji Line, in a quiet residential area. No parking is provided. If you go to see the exterior, please be considerate of the people who live here.