This paper presents the results of the excavation of two dry-stone structures in the abandoned blackhouse village of Bereiro, near to the township of Crowlista, Isle of Lewis. The research was undertaken as part of a wider landscape project investigating human occupation on the Uig peninsula from prehistory to the post-medieval period (the Uig Landscape Project). The excavation aimed to collect dating evidence from the site to determine the date of construction and abandonment of one of the earliest structures in the village, in an attempt to establish the longevity of the blackhouse form in the vernacular architecture of medieval Atlantic Scotland. The results of the dating program are considered alongside historical documents, which record the social history of the village within the context of the long-standing research questions regarding blackhouse villages. These questions include the development of the agricultural field systems and continuity or change in the Hebridean landscape from later-prehistory to medieval times.