Prior to a proposed programme of renovation work on two barns at Wallthwaite, Threlkeld, Cumbria, Greenlane Archaeology was commissioned to carry out an archaeological building recording. The buildings comprise a small isolated barn some distance from the main farm (the 'field barn') and a larger barn forming a courtyard of associated structures immediately adjacent to the original farmhouse (the 'farm barn'). Wallthwaite is recorded from at least the 14th century, the place-name indicating an association with a walk mill. Documentary records are relatively sparse, but early maps show both barns had reached their current form by the early 19th century and census returns and other sources show that the Bennett family were farming there throughout the 19th and into the 20th century. The building recording identified four phases of development within each barn. The field barn originally comprising a small building evidently intended to house animals and probably of at least 17th or 18th century date. It was later left roofless for some time before being reroofed in the late 19th century and notably had a substantial dividing wall constructed from massive pieces of slate and incorporating a door inscribed with graffiti. The farm barn has a datestone of 1839 and was clearly built as a single substantial structure comprising a large barn on one side facing a courtyard with a range of smaller ancillary buildings around it. It later saw a range of modifications reflecting the change in use of such buildings, in keeping with developments in agriculture during the 19th and 20th centuries. Both buildings are interesting and significant in their own right and represent unusual examples of their type. Renovation and reuse of them would be of considerable benefit.