Gallowhill Farmhouse, Gallowhill Farm, Campbeltown

Gallowhill Farmhouse is an early 19th-century farm comprising a single-storey and attic, T-plan farmhouse with flanking wings and barns projecting at right angles to a rear enclosing courtyard. The farmhouse has harled walls with droved and polished painted ashlar dressings. The cow byre and north barn are constructed in random rubble with stugged sandstone dressings, raised margins and projecting window cills.

The principal southeast elevation of the farmhouse is three bays wide with a gabled wing projecting at the centre. A glazed brick and timber porch projects at ground floor level to the right bay, with a window centred in the gable above. A two-leaf, vertically-boarded timber entrance door sits in the re-entrant angle with a bipartite window to the left. A single-storey and attic, two-bay wing projects to the right at slightly lower height. Harled stone, slate-hung gabled dormer windows break the roof eaves in each bay of the farmhouse, with corniced timber bargeboards and finials. The northwest rear elevation is asymmetrical and four bays wide, featuring a dormered bay at the outer left and a two-storey gabled harled brick projection to the right bay with an intermediate-level window to the outer right bay.

The single-storey, two-bay cow byre and single-storey and attic hayloft form an L-plan wing in random rubble stone adjoining the southwest end of the farmhouse. The cow byre is two bays wide with a sliding timber door at ground floor level. The hayloft and workshop is advanced and gabled with two-leaf sliding doors at ground floor level, and a vertically-boarded timber door and hoist in a stone gabled dormer breaking the roof eaves above. An infilled doorway exists at first floor level in the northwest gable, and a dormered doorway with vertically-boarded timber door breaks the roof eaves in the southwest elevation.

The dairy barn and bothy adjoins the northeast elevation of the farmhouse, constructed in random rubble with part-whitewashed walls. The bothy section projects from the centre of the southwest elevation and has late 20th-century openings with flanking later additions and a lean-to addition to the end wall.

Gallowhill Farm has mixed window designs. The farmhouse predominantly features 14-pane glazing patterns (horizontal lying panes) in timber sash and case frames. The cow byre has six-pane horizontal tilting timber windows. The roof is covered in grey slates, piended at the south corner of the cow byre, with small rooflights and cast iron gutters and downpipes throughout.

At the time of listing in 1996, the farmhouse contained a two-panel inner entrance door with etched glass upper, while the bothy held a wrought-iron range. The workshop and hayloft contain an open timber stair and timber grain shute. The cow byre interior features whitewashed walls, a concrete floor with griep, timber manger, horizontally-boarded trevises with timber tack hooks, slab dividers, piped water supply and troughs, hay hecks (racks) and a timber grain shute.

Boundary walls enclose the southeast side of the farm, featuring a ceramic cope made by John McKnight of Kilmarnock. A pair of squared and stugged ashlar gatepiers with pyramidal caps flank an iron gate.