Gwanas Farmhouse including attached Byre Range

Gwanas Farmhouse, built in the 19th century, is a large two-storey building made of rubble with a medium-pitched slate roof featuring deep verges and overhanging eaves. It has fine panelled end chimneys with moulded upper sections, string-courses, and weather-coursing. The front is symmetrical with three bays and a gabled central entrance bay, adorned with later 19th-century decorative bargeboards and a wooden spear-finial. Inside the gable, there is a framed slate lozenge displaying the date 1838 in raised figures, and below this is a moulded eaves band. The windows are plain, recessed later 19th-century sash windows with slate lintels, incised voussoirs, and raised keystones. The entrance features a contemporary boarded door with a diamond lattice fanlight, and there are additional sash windows at the rear, including an original horned sash, with the southern gable end hung with slate.

The porch is constructed from large rough-dressed stone blocks and has a deep chamfered plinth. It features slit-lights on the flanking walls that are splayed inwardly with Tudor-arched heads. The later 19th-century roof is slated and has bargeboards and a finial similar to those on the house. The entrance arch is supported by a segmental timber tie-beam with struts.

Adjoining the farmhouse to the northeast is an earlier range that is one-and-a-half piles in construction, matching the farmhouse. The northern part is the oldest and has an end chimney to the west, indicating it once served a domestic purpose before being converted into a stable/byre range, with openings dating from the 19th century. The entrance is located on the northern side, flanked by modern windows, with an additional window above and a boarded door to the right. There is a modern rubble outshut to the far right and a 19th-century external stepped access leading to the upper entrance at the eastern gable. The rear pile has modern entrances and windows.