Iwakura type is the characteristic plan type among many types in the farm houses in the Edo period. Iwakura type is consisted of four chambers. Each chambers are called Nanndo(bed room), Daidoko (living and dining), and tsuzuki-Zasiki(parlors). Iwakura type is featured by the plan arranged Nanndo in front of dirty floor. This study aims to investigate the existence of Iwakura type from the Iwakura village archives in the Edo period. As the result. It is clarified the existence of another Iwakura type which have Oue (usual parlor) instead of Daidoko and Shougi(dining table) on dirty floor after 19^<th>.
