It is a remnant of the buildings of the mostly demolished Boxley Abbey.
The barn is 186 feet (57 m) long, aligned with its long axis roughly east–west, and was built in the late 13th or early 14th century. It is constructed of local ragstone with two storeys and a plan tiled gable roof. Irregularly sized and placed windows and doors punctuate each of its façades. The building was used by the Abbey as its Hospitium and later as a tithe barn.[1]