The Okamoto family residence was built in the Arita, Wakasa-cho district (in the southern part of Fukui Prefecture) Okamoto was a village headman in the Edo period. The house of the Okamotos is believed to have been built around the early 18th century, based on writings from 1784 and specific details about the veranda. It has a hip-and-gable and thatched roof construction. Unlike the Reihoku region (northern part of Fukui Prefecture), the outline of the entire roof is straight, and the way the roof is thatched is different from what was normally done in the Reihoku region. The layout of the residence is divided in half. Aligned next to each other are a stable; an earthen floor; and a kitchen/sink with another earthen floor located to the front. Aligned towards the back of the house are a sitting room, inner room, storage room, and closet. In addition, houses in the Wakasa area did not have the traditional Buddhist altar room found in homes in the Reihoku region, but there is an alcove in the sitting room that serves as a space for the Buddhist altar.