Barton Farm Barton Grange Farm, six buildings grouped around a courtyard, is considered to be one of the best surviving examples of a medieval farm in existence in the country. English Heritage owns the Tithe Barn, but the Bradford on Avon Preservation Trust bought the rest of the site (excluding the privately-owned farmhouse) in 2000. The Trust won a double silver Green Apple award in 2005 for its renovation of Barton Grange Farm.