Omotani Family Household Tool Storehouse

Omotani Family Residence Tool Storehouse: The Gable That Guards the Gate

Most of the storehouses in a Japanese merchant's compound stand behind the house, out of sight. This one does not. The Omotani family's tool storehouse sits immediately north of the shop and main building in Hanamachi, Sakaiminato, and it turns its gable end squarely to the road. That single decision is why it matters.

A gable end is the narrow face of a building, the triangle under the roof. Presenting it to the street means the storehouse takes up almost no frontage, yet it closes the composition: the long horizontal roof of the main house to the south, then this compact vertical block, and the property's face to the road is complete. The Agency for Cultural Affairs makes exactly that point in its record, noting that the storehouse and the main building together form the front of the estate.

It was built in the early Meiji period, between 1868 and 1882, the same span as the main house. Two storeys, dozo construction, tiled roof, 54 square metres on the ground.

What a Dozo Actually Is

The word dozo gets translated as storehouse, which is accurate and tells you nothing. The construction is the point.

A dozo is a timber frame packed out with thick earthen walls and then finished in lime plaster, built to a depth that ordinary walls never reach. The mass does two jobs at once. It holds temperature and humidity steady, which is why storehouses were where you put anything that mattered. It also does not burn. In a port town of closely packed wooden buildings, where a single spark could clear a block, the dozo was the one structure a family expected to survive. Everything worth keeping went into it.

The doorway here faces the main house rather than the street, and it is fitted with double iron doors. Iron, not wood. The point of a fireproof box is lost if its opening is combustible, and the doors on a dozo were typically the most carefully made component of the whole building.

The roof is gabled and laid in sangawara pantiles, matching the main house.

The Puzzle of the Boarded Wall

Here is something worth stopping for. If a dozo is fireproof because it is plastered earth, why is the bottom half of this one clad in wood?

The west front, the face toward the road, carries sasarako shitami itabari up to waist height, with plaster above and three small windows cut into it. The other faces are boarded vertically. So the fireproof building has flammable material on its outside.

The answer is rain. Lime plaster is tough but not indestructible, and driving rain, which a coastal town on the Sea of Japan gets a great deal of, will erode a plastered wall from the ground up over years. The boarding is a screen. It takes the weather so the plaster does not, and it is designed to be replaceable in a way that the wall behind it is not. Builders accepted a small fire risk at the base in exchange for a wall that would still be standing in fifty years.

Sasarako refers to the vertical battens that hold the horizontal boards, notched along their length so each board seats into them. It is a considered detail, more work than a plain batten, and it produces a crisp shadow line across the wall. Look for it at street level on the west face. The three small windows above are placed for light and ventilation, kept deliberately few and deliberately small, because every opening in a dozo is a weakness.

Registration and What It Protects

The storehouse was entered on the national register on 25 April 2014, number 31-0189, in the seventy-seventh round. The criterion was contribution to the historic character of the national landscape.

Registered Tangible Cultural Property is a lighter category than Important Cultural Property, and the distinction is deliberate. The system arrived with a 1996 amendment to the Law for the Protection of Cultural Properties, aimed at buildings that the designation system, with its small numbers and strict controls, was never going to reach: privately held Meiji and Taisho fabric, still in everyday use, at risk less from disaster than from a quiet decision to clear the site. Owners retain practical control and report substantial changes instead of seeking prior approval.

For a building like this, the landscape criterion is close to literal. Take the storehouse away and the main house would still be there, but the street would read differently. What is registered is not just 54 square metres of earthen wall. It is the shape of a block.

Visiting

The Omotani buildings belong to Omotani Gomei Kaisha and are not open to visitors. The exterior is what the registration is about, and the exterior is what you can see, from the road at Hanamachi 8. Do not enter the grounds.

Come at a low sun if you can. Raking light is what brings out the notched battens and the joint between board and plaster; under a flat midday sky the wall reads as a single grey plane and the detail disappears.

Sakai Daiba Park is two doors along at Hanamachi 10, with the earthworks of the Sakai battery, a national Historic Site, built in 1863 as the largest of the Tottori domain's eight coastal gun emplacements. Adjacent to it, the Sea and Life Museum occupies a converted Meiji sake warehouse, which is the nearest you will get to standing inside a Sakaiminato brewing building of this era.