A castle was mentioned near the village in 1346, though only the foundations remain. During the Middle Ages, a number of landowners owned part or all of the village, including the Counts of Kyburg and the Lords of Jegistorf and Seedorf. In 1332 the Lords of Seedorf sold land and the village low court to citizens of Bern. Between 1334 and 1361 most of these citizens sold or donated their holdings in the village to the "Niedere Spital" (Lower Hospital) in Bern. The Hospital appointed an administrator to manage the estates in Iffwil. The village of "dorf ze Ober Iffwil" (Upper Iffwil village) was last mentioned in 1356. Sometime after that date, the village was abandoned.