Former Nishihiro Family Residence (Jirokichi) Warehouse

The South Warehouse: Why a Fishing Family Needed Two Barns, Not One

Fifty-nine square metres. The warehouse beside it covers ninety-five. Two buildings stand on the same raised ground at the eastern edge of the Nishihiro compound, facing the same direction, built to the same scheme, and one is roughly three-fifths the size of the other.

Reading that difference is where the south warehouse gets interesting.

The Agency for Cultural Affairs describes its composition as identical to the north warehouse while noting the smaller scale. A gabled two-storey core, entered on the long side. Lower geya roofs reaching deep around three faces. Timber construction, single storey with partial second floor, tiled roof. The date given is the Keio era, 1865 to 1867, though Chiba Prefecture's phrasing indicates this rests on family tradition rather than documentary evidence.

One Deliberate Difference

Beyond size, the two buildings differ in exactly one respect: where the window goes.

The north warehouse has a window in the south gable at second-floor level. The south warehouse has no gable opening at all and places its window on the ground floor of the south elevation instead. The national database records this distinction explicitly.

It sounds trivial. For a storehouse it is not. Openings determine what a building can hold. A window admits light and air, and with them humidity and ultraviolet degradation. No window in the upper gable means the south warehouse's second floor sat darker and more sealed than its neighbour's. Different contents, different requirements.

What those different contents were, no primary source tells us. The division of labour between the two barns is not documented.

What can be said is that these two buildings, however alike, were not stamped out as a matching pair. Someone thought about each one separately, inside a shared logic, and arrived at slightly different answers.

Where It Sits in the System

The south warehouse entered the register of Tangible Cultural Properties on 27 March 2018 with the number 12-246. The sequence runs cleanly: the main house 12-243, the cannery 12-244, the north warehouse 12-245, this building 12-246, the brick wall 12-247. Five entries assessed and registered together as one compound.

Its criterion is quality of design, shared with the north warehouse and the main house. The cannery and the brick wall came in under a separate clause, contribution to the historical landscape. Even within one family's property, the state applied two different tests.

A word on the system itself, since it confuses most visitors from abroad. Japan runs two parallel tracks. Designation, which produces National Treasures and Important Cultural Properties, requires permission from the Commissioner for Cultural Affairs before an owner may alter anything. Registration, created in 1996, works by notification: alterations affecting up to a quarter of the exterior need no approval at all. It is a far lighter touch, and deliberately so.

The lightness is the point. Designation cannot realistically cover every building worth keeping, particularly modern structures and buildings still in daily use, where heavy controls would simply push owners toward demolition. Registration was built for exactly the case of a working net barn on a working shipowner's property.

What to Look For

Nobody comes to Choshi to see the south warehouse on its own. See it next to its twin instead, because the comparison does the explaining.

From the front, the two silhouettes are geometrically similar. The same pitch on the geya roofs, the same vertical board cladding, the same pantiles. Only the dimensions change, and the window position. The work of one carpenter's team, within one span of years, is a reasonable inference.

Walk round to the south face and find the ground-floor window. That single opening is the only point where this building parts company with its neighbour.

Then step back and consider the plain fact of two barns. Nets are not one thing. Different species, different seasons, different gear; more boats mean more nets. That the Nishihiro family had two net stores on the high ground of their property by the 1860s tells you the scale at which they were already fishing. The main house came a dozen years later. The tools of the trade were housed properly before the family housed itself in style.

Neither warehouse carries a signboard. They stand apart from the main house on their rise, entirely unexplained, which is why the guided open days matter: second and fourth Sunday of each month, 10:00 to 15:00. Confirm with the Choshi City cultural properties office, 0479-21-6662.