Nether Mains Of Aquahorthies, House Of Aquahorthies

The site comprises an early 19th century farm steading situated to the north of the main house. It includes five original farm buildings constructed from squared granite rubble with slated roofs and timber louvered and boarded openings.

Two symmetrical byre ranges enclose a cattle court. These are single-storey structures with single-bay returns to the east. The southern-most range is attached to the north wall of the walled garden. A threshing mill block, apparently an addition from the late 19th century (after an Ordnance Survey map of 1867), is attached at right angles to the north byre range to the west. The slate roof of this block has been replaced with corrugated asbestos sheeting, and it contains a cast-iron water wheel in a wheel-pit, with a threshing machine and cobbled floor inside.

A detached granary block stands to the west, being a single-storey structure with a loft. It is rubble-built with dressed quoins, featuring asymmetrical openings regularly spaced on the south elevation, a door and altered window below, and two loft openings on the east gable. A pitched slated roof tops the structure, with small skylights.

The south stable block is attached to the west wall of the walled garden. Constructed of squared granite rubble, it has pitched slated roofs and skewed gable ends that rise above the wallheads. The block originally had two cells, with a variety of openings. A blocked hayloft opening is on the north gable, flanked by single louvered square loft openings. The west elevation features three doors and one window; originally there were four doors, one of the central doors being altered into a window. A jerkin-headed dormer window is above the centre, and a lean-to extension is attached to the south gable. This lean-to has two small four-paned windows widely spaced at the loft/attic level, and a wider, blocked centre window. A skewputt to the left is inscribed "GH" (likely referring to Bishop George Hay). The interior has a cobbled floor with original wooden trevises and a central drain.

To the southwest is a pair of single-storey farm workers' cottages, known as Nethermains of Aquahorthies, having two and three bays respectively. These are constructed from squared pink granite rubble, with skew and corniced stacks. The east cottage has a slated roof with cant-fronted dormers, while the west cottage's roof was replaced in 1992.

The walled garden dates from 1811 and is built from field rubble with an ashlar cope. A pair of early 19th century gatepiers, topped with ball finials, stand on a track towards the steading at the southwest corner of the walled garden.