This report presents the results of a historic building recording and archaeological evaluation trenching that were carried out by South West Archaeology Ltd. (SWARCH) for a residential development at Barn at Brightmanshayes, Petrockstowe, Torridge, Devon. The work was carried out in accordance with a Written Scheme of Investigation (Boyd 2022) that was agreed in consultation with Devon County Council Historic Environment Team (DCHET). The barn measures c.15.0m in length by c.5.4m in width and it is approximately 1.5 storeys in height. It formerly had a pitched roof of corrugated fibre sheets, though only the northern end of the roof survives. The walls are of lime and earth bonded stone and they are c.0.48-0.52m in thickness. The build is generally of roughly coursed sub-angular to sub-rounded stone (c.0.20m x c.0.08m), though some squarer stone (c.0.20-0.25m x c.0.25m) is spread throughout the build. The walls are bonded with a light yellow-grey lime and earth mortar, though there is evidence of repointing/rebuilding at the northern end of the barn and there is evidence of cement repointing within the western elevation. A total of three archaeological evaluation trenches were opened, though few features or finds were identified. The historic building recording and the archaeological evaluation trenching demonstrated that the structure was built, and has seemingly always functioned, as a barn. It was originally a part of a small farmstead, though it was later used as an out barn. The northern end of the barn and the northern end of the roof appear to have been rebuilt in the late 19th century or the early 20th century, though the barn likely has early 19th century origins.